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Uart driver
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stm32f0xx_hal_uart.c
/**
******************************************************************************
* @file stm32f0xx_hal_uart.c
* @author MCD Application Team
* @version V1.0.1
* @date 18-June-2014
* @brief UART HAL module driver.
*
* This file provides firmware functions to manage the following
* functionalities of the UART peripheral:
* + Initialization/de-initialization function
* + I/O operation function
* + Peripheral Control function
* + Peripheral State function
*
@verbatim
===============================================================================
##### How to use this driver #####
================================================================================
[..]
The UART HAL driver can be used as follows:
(#) Declare a UART_HandleTypeDef handle structure.
(#) Initialize the UART low level resources by implementing the HAL_UART_MspInit ()API:
(##) Enable the USARTx interface clock.
(##) UART pins configuration:
(+) Enable the clock for the UART GPIOs.
(+) Configure these UART pins as alternate function pull-up.
(##) NVIC configuration if you need to use interrupt process (HAL_UART_Transmit_IT()
and HAL_UART_Receive_IT() APIs):
(+) Configure the USARTx interrupt priority.
(+) Enable the NVIC USART IRQ handle.
(@) The specific UART interrupts (Transmission complete interrupt,
RXNE interrupt and Error Interrupts) will be managed using the macros
__HAL_UART_ENABLE_IT() and __HAL_UART_DISABLE_IT() inside the transmit and receive process.
(##) DMA Configuration if you need to use DMA process (HAL_UART_Transmit_DMA()
and HAL_UART_Receive_DMA() APIs):
(+) Declare a DMA handle structure for the Tx/Rx stream.
(+) Enable the DMAx interface clock.
(+) Configure the declared DMA handle structure with the required Tx/Rx parameters.
(+) Configure the DMA Tx/Rx Stream.
(+) Associate the initilalized DMA handle to the UART DMA Tx/Rx handle.
(+) Configure the priority and enable the NVIC for the transfer complete interrupt on the DMA Tx/Rx Stream.
(#) Program the Baud Rate, Word Length , Stop Bit, Parity, Hardware
flow control and Mode(Receiver/Transmitter) in the huart Init structure.
(#) If required, program UART advanced features (TX/RX pins swap, auto Baud rate detection,...)
in the huart AdvancedInit structure.
(#) For the UART asynchronous mode, initialize the UART registers by calling
the HAL_UART_Init() API.
(#) For the UART Half duplex mode, initialize the UART registers by calling
the HAL_HalfDuplex_Init() API.
(#) For the UART Multiprocessor mode, initialize the UART registers
by calling the HAL_MultiProcessor_Init() API.
(#) For the UART RS485 Driver Enabled mode, initialize the UART registers
by calling the HAL_RS485Ex_Init() API.
(@) These API's(HAL_UART_Init(), HAL_HalfDuplex_Init(), HAL_MultiProcessor_Init(),
also configure also the low level Hardware GPIO, CLOCK, CORTEX...etc) by
calling the customized HAL_UART_MspInit() API.
@endverbatim
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32f0xx_hal.h"
/** @addtogroup STM32F0xx_HAL_Driver
* @{
*/
/** @defgroup UART
* @brief HAL UART module driver
* @{
*/
#ifdef HAL_UART_MODULE_ENABLED
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define HAL_UART_TXDMA_TIMEOUTVALUE 22000
#define UART_CR1_FIELDS ((uint32_t)(USART_CR1_M | USART_CR1_PCE | USART_CR1_PS | \
USART_CR1_TE | USART_CR1_RE | USART_CR1_OVER8))
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
static void UART_DMATransmitCplt(DMA_HandleTypeDef *hdma);
static void UART_DMAReceiveCplt(DMA_HandleTypeDef *hdma);
static void UART_DMARxHalfCplt(DMA_HandleTypeDef *hdma);
static void UART_DMATxHalfCplt(DMA_HandleTypeDef *hdma);
static void UART_DMAError(DMA_HandleTypeDef *hdma);
/* Private functions ---------------------------------------------------------*/
/** @defgroup UART_Private_Functions
* @{
*/
/** @defgroup HAL_UART_Group1 Initialization/de-initialization functions
* @brief Initialization and Configuration functions
*
@verbatim
===============================================================================
##### Initialization and Configuration functions #####
===============================================================================
[..]
This subsection provides a set of functions allowing to initialize the USARTx or the UARTy
in asynchronous mode.
(+) For the asynchronous mode only these parameters can be configured:
(++) Baud Rate
(++) Word Length
(++) Stop Bit
(++) Parity: If the parity is enabled, then the MSB bit of the data written
in the data register is transmitted but is changed by the parity bit.
Depending on the frame length defined by the M bit (8-bits or 9-bits),
the possible UART frame formats are as listed in the following table:
|-----------|-----------|---------------------------------------|
| M1M0 bits | PCE bit | UART frame |
|-----------------------|---------------------------------------|
| 00 | 0 | | SB | 8-bit data | STB | |
|-----------|-----------|---------------------------------------|
| 00 | 1 | | SB | 7-bit data | PB | STB | |
|-----------|-----------|---------------------------------------|
| 01 | 0 | | SB | 9-bit data | STB | |
|-----------|-----------|---------------------------------------|
| 01 | 1 | | SB | 8-bit data | PB | STB | |
+---------------------------------------------------------------+
| 10 | 0 | | SB | 7-bit data | STB | |
|-----------|-----------|---------------------------------------|
| 10 | 1 | | SB | 6-bit data | PB | STB | |
+---------------------------------------------------------------+
(++) Hardware flow control
(++) Receiver/transmitter modes
(++) Over Sampling Method
(++) One-Bit Sampling Method
(+) For the asynchronous mode, the following advanced features can be configured as well:
(++) TX and/or RX pin level inversion
(++) data logical level inversion
(++) RX and TX pins swap
(++) RX overrun detection disabling
(++) DMA disabling on RX error
(++) MSB first on communication line
(++) auto Baud rate detection
[..]
The HAL_UART_Init(), HAL_HalfDuplex_Init() and HAL_MultiProcessor_Init()
API follow respectively the UART asynchronous, UART Half duplex and multiprocessor
configuration procedures (details for the procedures are available in reference manual).
@endverbatim
* @{
*/
/**
* @brief Initializes the UART mode according to the specified
* parameters in the UART_InitTypeDef and creates the associated handle .
* @param huart: uart handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_UART_Init(UART_HandleTypeDef *huart)
{
/* Check the UART handle allocation */
if(huart == NULL)
{
return HAL_ERROR;
}
/* Check the parameters */
assert_param(IS_UART_INSTANCE(huart->Instance));
if(huart->Init.HwFlowCtl != UART_HWCONTROL_NONE)
{
/* Check the parameters */
assert_param(IS_UART_HWFLOW_INSTANCE(huart->Instance));
}
if(huart->State == HAL_UART_STATE_RESET)
{
/* Init the low level hardware : GPIO, CLOCK */
HAL_UART_MspInit(huart);
}
huart->State = HAL_UART_STATE_BUSY;
/* Disable the Peripheral */
__HAL_UART_DISABLE(huart);
/* Set the UART Communication parameters */
if (UART_SetConfig(huart) == HAL_ERROR)
{
return HAL_ERROR;
}
if (huart->AdvancedInit.AdvFeatureInit != UART_ADVFEATURE_NO_INIT)
{
UART_AdvFeatureConfig(huart);
}
/* In asynchronous mode, the following bits must be kept cleared:
- LINEN and CLKEN bits in the USART_CR2 register,
- SCEN, HDSEL and IREN bits in the USART_CR3 register.*/
huart->Instance->CR2 &= ~(USART_CR2_LINEN | USART_CR2_CLKEN);
huart->Instance->CR3 &= ~(USART_CR3_SCEN | USART_CR3_HDSEL | USART_CR3_IREN);
/* Enable the Peripheral */
__HAL_UART_ENABLE(huart);
/* TEACK and/or REACK to check before moving huart->State to Ready */
return (UART_CheckIdleState(huart));
}
/**
* @brief Initializes the half-duplex mode according to the specified
* parameters in the UART_InitTypeDef and creates the associated handle .
* @param huart: uart handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_HalfDuplex_Init(UART_HandleTypeDef *huart)
{
/* Check the UART handle allocation */
if(huart == NULL)
{
return HAL_ERROR;
}
/* Check UART instance */
assert_param(IS_UART_HALFDUPLEX_INSTANCE(huart->Instance));
if(huart->State == HAL_UART_STATE_RESET)
{
/* Init the low level hardware : GPIO, CLOCK */
HAL_UART_MspInit(huart);
}
huart->State = HAL_UART_STATE_BUSY;
/* Disable the Peripheral */
__HAL_UART_DISABLE(huart);
/* Set the UART Communication parameters */
if (UART_SetConfig(huart) == HAL_ERROR)
{
return HAL_ERROR;
}
if (huart->AdvancedInit.AdvFeatureInit != UART_ADVFEATURE_NO_INIT)
{
UART_AdvFeatureConfig(huart);
}
/* In half-duplex mode, the following bits must be kept cleared:
- LINEN and CLKEN bits in the USART_CR2 register,
- SCEN and IREN bits in the USART_CR3 register.*/
huart->Instance->CR2 &= ~(USART_CR2_LINEN | USART_CR2_CLKEN);
huart->Instance->CR3 &= ~(USART_CR3_IREN | USART_CR3_SCEN);
/* Enable the Half-Duplex mode by setting the HDSEL bit in the CR3 register */
huart->Instance->CR3 |= USART_CR3_HDSEL;
/* Enable the Peripheral */
__HAL_UART_ENABLE(huart);
/* TEACK and/or REACK to check before moving huart->State to Ready */
return (UART_CheckIdleState(huart));
}
/**
* @brief Initializes the multiprocessor mode according to the specified
* parameters in the UART_InitTypeDef and creates the associated handle.
* @param huart: UART handle
* @param Address: UART node address (4-, 6-, 7- or 8-bit long)
* @param WakeUpMethod: specifies the UART wakeup method.
* This parameter can be one of the following values:
* @arg UART_WAKEUPMETHOD_IDLELINE: WakeUp by an idle line detection
* @arg UART_WAKEUPMETHOD_ADDRESSMARK: WakeUp by an address mark
* @note If the user resorts to idle line detection wake up, the Address parameter
* is useless and ignored by the initialization function.
* @note If the user resorts to address mark wake up, the address length detection
* is configured by default to 4 bits only. For the UART to be able to
* manage 6-, 7- or 8-bit long addresses detection, the API
* HAL_MultiProcessorEx_AddressLength_Set() must be called after
* HAL_MultiProcessor_Init().
* @retval HAL status
*/
HAL_StatusTypeDef HAL_MultiProcessor_Init(UART_HandleTypeDef *huart, uint8_t Address, uint32_t WakeUpMethod)
{
/* Check the UART handle allocation */
if(huart == NULL)
{
return HAL_ERROR;
}
/* Check the wake up method parameter */
assert_param(IS_UART_WAKEUPMETHOD(WakeUpMethod));
if(huart->State == HAL_UART_STATE_RESET)
{
/* Init the low level hardware : GPIO, CLOCK */
HAL_UART_MspInit(huart);
}
huart->State = HAL_UART_STATE_BUSY;
/* Disable the Peripheral */
__HAL_UART_DISABLE(huart);
/* Set the UART Communication parameters */
if (UART_SetConfig(huart) == HAL_ERROR)
{
return HAL_ERROR;
}
if (huart->AdvancedInit.AdvFeatureInit != UART_ADVFEATURE_NO_INIT)
{
UART_AdvFeatureConfig(huart);
}
/* In multiprocessor mode, the following bits must be kept cleared:
- LINEN and CLKEN bits in the USART_CR2 register,
- SCEN, HDSEL and IREN bits in the USART_CR3 register. */
huart->Instance->CR2 &= ~(USART_CR2_LINEN | USART_CR2_CLKEN);
huart->Instance->CR3 &= ~(USART_CR3_SCEN | USART_CR3_HDSEL | USART_CR3_IREN);
if (WakeUpMethod == UART_WAKEUPMETHOD_ADDRESSMARK)
{
/* If address mark wake up method is chosen, set the USART address node */
MODIFY_REG(huart->Instance->CR2, USART_CR2_ADD, ((uint32_t)Address << UART_CR2_ADDRESS_LSB_POS));
}
/* Set the wake up method by setting the WAKE bit in the CR1 register */
MODIFY_REG(huart->Instance->CR1, USART_CR1_WAKE, WakeUpMethod);
/* Enable the Peripheral */
__HAL_UART_ENABLE(huart);
/* TEACK and/or REACK to check before moving huart->State to Ready */
return (UART_CheckIdleState(huart));
}
/**
* @brief DeInitializes the UART peripheral
* @param huart: uart handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_UART_DeInit(UART_HandleTypeDef *huart)
{
/* Check the UART handle allocation */
if(huart == NULL)
{
return HAL_ERROR;
}
/* Check the parameters */
assert_param(IS_UART_INSTANCE(huart->Instance));
huart->State = HAL_UART_STATE_BUSY;
/* Disable the Peripheral */
__HAL_UART_DISABLE(huart);
huart->Instance->CR1 = 0x0;
huart->Instance->CR2 = 0x0;
huart->Instance->CR3 = 0x0;
/* DeInit the low level hardware */
HAL_UART_MspDeInit(huart);
huart->ErrorCode = HAL_UART_ERROR_NONE;
huart->State = HAL_UART_STATE_RESET;
/* Process Unlock */
__HAL_UNLOCK(huart);
return HAL_OK;
}
/**
* @brief UART MSP Init
* @param huart: uart handle
* @retval None
*/
__weak void HAL_UART_MspInit(UART_HandleTypeDef *huart)
{
/* NOTE : This function should not be modified, when the callback is needed,
the HAL_UART_MspInit can be implemented in the user file
*/
}
/**
* @brief UART MSP DeInit
* @param huart: uart handle
* @retval None
*/
__weak void HAL_UART_MspDeInit(UART_HandleTypeDef *huart)
{
/* NOTE : This function should not be modified, when the callback is needed,
the HAL_UART_MspDeInit can be implemented in the user file
*/
}
/**
* @}
*/
/** @defgroup HAL_UART_Group2 IO operation functions
* @brief UART Transmit/Receive functions
*
@verbatim
===============================================================================
##### I/O operation functions #####
===============================================================================
This subsection provides a set of functions allowing to manage the UART asynchronous
and Half duplex data transfers.
(#) There are two mode of transfer:
(+) Blocking mode: The communication is performed in polling mode.
The HAL status of all data processing is returned by the same function
after finishing transfer.
(+) No-Blocking mode: The communication is performed using Interrupts
or DMA, These API's return the HAL status.
The end of the data processing will be indicated through the
dedicated UART IRQ when using Interrupt mode or the DMA IRQ when
using DMA mode.
The HAL_UART_TxCpltCallback(), HAL_UART_RxCpltCallback() user callbacks
will be executed respectivelly at the end of the transmit or Receive process
The HAL_UART_ErrorCallback()user callback will be executed when a communication error is detected
(#) Blocking mode API's are :
(+) HAL_UART_Transmit()
(+) HAL_UART_Receive()
(#) Non-Blocking mode API's with Interrupt are :
(+) HAL_UART_Transmit_IT()
(+) HAL_UART_Receive_IT()
(+) HAL_UART_IRQHandler()
(+) UART_Transmit_IT()
(+) UART_Receive_IT()
(#) No-Blocking mode API's with DMA are :
(+) HAL_UART_Transmit_DMA()
(+) HAL_UART_Receive_DMA()
(+) HAL_UART_DMAPause()
(+) HAL_UART_DMAResume()
(+) HAL_UART_DMAStop()
(#) A set of Transfer Complete Callbacks are provided in No_Blocking mode:
(+) HAL_UART_TxHalfCpltCallback()
(+) HAL_UART_TxCpltCallback()
(+) HAL_UART_RxHalfCpltCallback()
(+) HAL_UART_RxCpltCallback()
(+) HAL_UART_ErrorCallback()
-@- In the Half duplex communication, it is forbidden to run the transmit
and receive process in parallel, the UART state HAL_UART_STATE_BUSY_TX_RX can't be useful.
@endverbatim
* @{
*/
/**
* @brief Send an amount of data in blocking mode
* @param huart: uart handle
* @param pData: pointer to data buffer
* @param Size: amount of data to be sent
* @param Timeout : Timeout duration
* @retval HAL status
*/
HAL_StatusTypeDef HAL_UART_Transmit(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size, uint32_t Timeout)
{
uint16_t* tmp;
if((huart->State == HAL_UART_STATE_READY) || (huart->State == HAL_UART_STATE_BUSY_RX))
{
if((pData == NULL ) || (Size == 0))
{
return HAL_ERROR;
}
/* Process Locked */
__HAL_LOCK(huart);
huart->ErrorCode = HAL_UART_ERROR_NONE;
/* Check if a non-blocking receive process is ongoing or not */
if(huart->State == HAL_UART_STATE_BUSY_RX)
{
huart->State = HAL_UART_STATE_BUSY_TX_RX;
}
else
{
huart->State = HAL_UART_STATE_BUSY_TX;
}
huart->TxXferSize = Size;
huart->TxXferCount = Size;
while(huart->TxXferCount > 0)
{
huart->TxXferCount--;
if(UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_TXE, RESET, Timeout) != HAL_OK)
{
return HAL_TIMEOUT;
}
if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
{
tmp = (uint16_t*) pData;
huart->Instance->TDR = (*tmp & (uint16_t)0x01FF);
pData += 2;
}
else
{
huart->Instance->TDR = (*pData++ & (uint8_t)0xFF);
}
}
if(UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_TC, RESET, Timeout) != HAL_OK)
{
return HAL_TIMEOUT;
}
/* Check if a non-blocking receive Process is ongoing or not */
if(huart->State == HAL_UART_STATE_BUSY_TX_RX)
{
huart->State = HAL_UART_STATE_BUSY_RX;
}
else
{
huart->State = HAL_UART_STATE_READY;
}
/* Process Unlocked */
__HAL_UNLOCK(huart);
return HAL_OK;
}
else
{
return HAL_BUSY;
}
}
/**
* @brief Receive an amount of data in blocking mode
* @param huart: uart handle
* @param pData: pointer to data buffer
* @param Size: amount of data to be received
* @param Timeout : Timeout duration
* @retval HAL status
*/
HAL_StatusTypeDef HAL_UART_Receive(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size, uint32_t Timeout)
{
uint16_t* tmp;
uint16_t uhMask;
if((huart->State == HAL_UART_STATE_READY) || (huart->State == HAL_UART_STATE_BUSY_TX))
{
if((pData == NULL ) || (Size == 0))
{
return HAL_ERROR;
}
/* Process Locked */
__HAL_LOCK(huart);
huart->ErrorCode = HAL_UART_ERROR_NONE;
/* Check if a non-blocking transmit process is ongoing or not */
if(huart->State == HAL_UART_STATE_BUSY_TX)
{
huart->State = HAL_UART_STATE_BUSY_TX_RX;
}
else
{
huart->State = HAL_UART_STATE_BUSY_RX;
}
huart->RxXferSize = Size;
huart->RxXferCount = Size;
/* Computation of UART mask to apply to RDR register */
__HAL_UART_MASK_COMPUTATION(huart);
uhMask = huart->Mask;
/* as long as data have to be received */
while(huart->RxXferCount > 0)
{
huart->RxXferCount--;
if(UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_RXNE, RESET, Timeout) != HAL_OK)
{
return HAL_TIMEOUT;
}
if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
{
tmp = (uint16_t*) pData ;
*tmp = (uint16_t)(huart->Instance->RDR & uhMask);
pData +=2;
}
else
{
*pData++ = (uint8_t)(huart->Instance->RDR & (uint8_t)uhMask);
}
}
/* Check if a non-blocking transmit Process is ongoing or not */
if(huart->State == HAL_UART_STATE_BUSY_TX_RX)
{
huart->State = HAL_UART_STATE_BUSY_TX;
}
else
{
huart->State = HAL_UART_STATE_READY;
}
/* Process Unlocked */
__HAL_UNLOCK(huart);
return HAL_OK;
}
else
{
return HAL_BUSY;
}
}
/**
* @brief Send an amount of data in interrupt mode
* @param huart: uart handle
* @param pData: pointer to data buffer
* @param Size: amount of data to be sent
* @retval HAL status
*/
HAL_StatusTypeDef HAL_UART_Transmit_IT(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
{
if((huart->State == HAL_UART_STATE_READY) || (huart->State == HAL_UART_STATE_BUSY_RX))
{
if((pData == NULL ) || (Size == 0))
{
return HAL_ERROR;
}
/* Process Locked */
__HAL_LOCK(huart);
huart->pTxBuffPtr = pData;
huart->TxXferSize = Size;
huart->TxXferCount = Size;
huart->ErrorCode = HAL_UART_ERROR_NONE;
/* Check if a receive process is ongoing or not */
if(huart->State == HAL_UART_STATE_BUSY_RX)
{
huart->State = HAL_UART_STATE_BUSY_TX_RX;
}
else
{
huart->State = HAL_UART_STATE_BUSY_TX;
}
/* Enable the UART Error Interrupt: (Frame error, noise error, overrun error) */
__HAL_UART_ENABLE_IT(huart, UART_IT_ERR);
/* Process Unlocked */
__HAL_UNLOCK(huart);
/* Enable the UART Transmit Data Register Empty Interrupt */
__HAL_UART_ENABLE_IT(huart, UART_IT_TXE);
return HAL_OK;
}
else
{
return HAL_BUSY;
}
}
/**
* @brief Receive an amount of data in interrupt mode
* @param huart: uart handle
* @param pData: pointer to data buffer
* @param Size: amount of data to be received
* @retval HAL status
*/
HAL_StatusTypeDef HAL_UART_Receive_IT(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
{
if((huart->State == HAL_UART_STATE_READY) || (huart->State == HAL_UART_STATE_BUSY_TX))
{
if((pData == NULL ) || (Size == 0))
{
return HAL_ERROR;
}
/* Process Locked */
__HAL_LOCK(huart);
huart->pRxBuffPtr = pData;
huart->RxXferSize = Size;
huart->RxXferCount = Size;
/* Computation of UART mask to apply to RDR register */
__HAL_UART_MASK_COMPUTATION(huart);
huart->ErrorCode = HAL_UART_ERROR_NONE;
/* Check if a transmit process is ongoing or not */
if(huart->State == HAL_UART_STATE_BUSY_TX)
{
huart->State = HAL_UART_STATE_BUSY_TX_RX;
}
else
{
huart->State = HAL_UART_STATE_BUSY_RX;
}
/* Enable the UART Parity Error Interrupt */
__HAL_UART_ENABLE_IT(huart, UART_IT_PE);
/* Enable the UART Error Interrupt: (Frame error, noise error, overrun error) */
__HAL_UART_ENABLE_IT(huart, UART_IT_ERR);
/* Process Unlocked */
__HAL_UNLOCK(huart);
/* Enable the UART Data Register not empty Interrupt */
__HAL_UART_ENABLE_IT(huart, UART_IT_RXNE);
return HAL_OK;
}
else
{
return HAL_BUSY;
}
}
/**
* @brief Send an amount of data in DMA mode
* @param huart: uart handle
* @param pData: pointer to data buffer
* @param Size: amount of data to be sent
* @retval HAL status
*/
HAL_StatusTypeDef HAL_UART_Transmit_DMA(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
{
uint32_t *tmp;
if((huart->State == HAL_UART_STATE_READY) || (huart->State == HAL_UART_STATE_BUSY_RX))
{
if((pData == NULL ) || (Size == 0))
{
return HAL_ERROR;
}
/* Process Locked */
__HAL_LOCK(huart);
huart->pTxBuffPtr = pData;
huart->TxXferSize = Size;
huart->TxXferCount = Size;
huart->ErrorCode = HAL_UART_ERROR_NONE;
/* Check if a receive process is ongoing or not */
if(huart->State == HAL_UART_STATE_BUSY_RX)
{
huart->State = HAL_UART_STATE_BUSY_TX_RX;
}
else
{
huart->State = HAL_UART_STATE_BUSY_TX;
}
/* Set the UART DMA transfer complete callback */
huart->hdmatx->XferCpltCallback = UART_DMATransmitCplt;
/* Set the UART DMA Half transfer complete callback */
huart->hdmatx->XferHalfCpltCallback = UART_DMATxHalfCplt;
/* Set the DMA error callback */
huart->hdmatx->XferErrorCallback = UART_DMAError;
/* Enable the UART transmit DMA channel */
tmp = (uint32_t*)&pData;
HAL_DMA_Start_IT(huart->hdmatx, *(uint32_t*)tmp, (uint32_t)&huart->Instance->TDR, Size);
/* Enable the DMA transfer for transmit request by setting the DMAT bit
in the UART CR3 register */
huart->Instance->CR3 |= USART_CR3_DMAT;
/* Process Unlocked */
__HAL_UNLOCK(huart);
return HAL_OK;
}
else
{
return HAL_BUSY;
}
}
/**
* @brief Receive an amount of data in DMA mode
* @param huart: uart handle
* @param pData: pointer to data buffer
* @param Size: amount of data to be received
* @note When the UART parity is enabled (PCE = 1), the received data contain
* the parity bit (MSB position)
* @retval HAL status
*/
HAL_StatusTypeDef HAL_UART_Receive_DMA(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size)
{
uint32_t *tmp;
if((huart->State == HAL_UART_STATE_READY) || (huart->State == HAL_UART_STATE_BUSY_TX))
{
if((pData == NULL ) || (Size == 0))
{
return HAL_ERROR;
}
/* Process Locked */
__HAL_LOCK(huart);
huart->pRxBuffPtr = pData;
huart->RxXferSize = Size;
huart->ErrorCode = HAL_UART_ERROR_NONE;
/* Check if a transmit process is ongoing or not */
if(huart->State == HAL_UART_STATE_BUSY_TX)
{
huart->State = HAL_UART_STATE_BUSY_TX_RX;
}
else
{
huart->State = HAL_UART_STATE_BUSY_RX;
}
/* Set the UART DMA transfer complete callback */
huart->hdmarx->XferCpltCallback = UART_DMAReceiveCplt;
/* Set the UART DMA Half transfer complete callback */
huart->hdmarx->XferHalfCpltCallback = UART_DMARxHalfCplt;
/* Set the DMA error callback */
huart->hdmarx->XferErrorCallback = UART_DMAError;
/* Enable the DMA channel */
tmp = (uint32_t*)&pData;
HAL_DMA_Start_IT(huart->hdmarx, (uint32_t)&huart->Instance->RDR, *(uint32_t*)tmp, Size);
/* Enable the DMA transfer for the receiver request by setting the DMAR bit
in the UART CR3 register */
huart->Instance->CR3 |= USART_CR3_DMAR;
/* Process Unlocked */
__HAL_UNLOCK(huart);
return HAL_OK;
}
else
{
return HAL_BUSY;
}
}
/**
* @brief Pauses the DMA Transfer.
* @param huart: UART handle
* @retval None
*/
HAL_StatusTypeDef HAL_UART_DMAPause(UART_HandleTypeDef *huart)
{
/* Process Locked */
__HAL_LOCK(huart);
if(huart->State == HAL_UART_STATE_BUSY_TX)
{
/* Disable the UART DMA Tx request */
huart->Instance->CR3 &= (uint32_t)(~USART_CR3_DMAT);
}
else if(huart->State == HAL_UART_STATE_BUSY_RX)
{
/* Disable the UART DMA Rx request */
huart->Instance->CR3 &= (uint32_t)(~USART_CR3_DMAR);
}
else if(huart->State == HAL_UART_STATE_BUSY_TX_RX)
{
/* Disable the UART DMA Tx request */
huart->Instance->CR3 &= (uint32_t)(~USART_CR3_DMAT);
/* Disable the UART DMA Rx request */
huart->Instance->CR3 &= (uint32_t)(~USART_CR3_DMAR);
}
/* Process Unlocked */
__HAL_UNLOCK(huart);
return HAL_OK;
}
/**
* @brief Resumes the DMA Transfer.
* @param huart: UART handle
* @retval None
*/
HAL_StatusTypeDef HAL_UART_DMAResume(UART_HandleTypeDef *huart)
{
/* Process Locked */
__HAL_LOCK(huart);
if(huart->State == HAL_UART_STATE_BUSY_TX)
{
/* Enable the UART DMA Tx request */
huart->Instance->CR3 |= USART_CR3_DMAT;
}
else if(huart->State == HAL_UART_STATE_BUSY_RX)
{
/* Enable the UART DMA Rx request */
huart->Instance->CR3 |= USART_CR3_DMAR;
}
else if(huart->State == HAL_UART_STATE_BUSY_TX_RX)
{
/* Enable the UART DMA Rx request before the DMA Tx request */
huart->Instance->CR3 |= USART_CR3_DMAR;
/* Enable the UART DMA Tx request */
huart->Instance->CR3 |= USART_CR3_DMAT;
}
/* If the UART peripheral is still not enabled, enable it */
if ((huart->Instance->CR1 & USART_CR1_UE) == 0)
{
/* Enable UART peripheral */
__HAL_UART_ENABLE(huart);
}
/* TEACK and/or REACK to check before moving huart->State to Ready */
return (UART_CheckIdleState(huart));
}
/**
* @brief Stops the DMA Transfer.
* @param huart: UART handle
* @retval None
*/
HAL_StatusTypeDef HAL_UART_DMAStop(UART_HandleTypeDef *huart)
{
/* Process Locked */
__HAL_LOCK(huart);
/* Disable the UART Tx/Rx DMA requests */
huart->Instance->CR3 &= ~USART_CR3_DMAT;
huart->Instance->CR3 &= ~USART_CR3_DMAR;
/* Abort the UART DMA tx channel */
if(huart->hdmatx != NULL)
{
HAL_DMA_Abort(huart->hdmatx);
}
/* Abort the UART DMA rx channel */
if(huart->hdmarx != NULL)
{
HAL_DMA_Abort(huart->hdmarx);
}
/* Disable UART peripheral */
__HAL_UART_DISABLE(huart);
huart->State = HAL_UART_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(huart);
return HAL_OK;
}
/**
* @brief This function handles UART Communication Timeout.
* @param huart: UART handle
* @param Flag: specifies the UART flag to check.
* @param Status: The new Flag status (SET or RESET).
* @param Timeout: Timeout duration
* @retval HAL status
*/
HAL_StatusTypeDef UART_WaitOnFlagUntilTimeout(UART_HandleTypeDef *huart, uint32_t Flag, FlagStatus Status, uint32_t Timeout)
{
uint32_t tickstart = HAL_GetTick();
/* Wait until flag is set */
if(Status == RESET)
{
while(__HAL_UART_GET_FLAG(huart, Flag) == RESET)
{
/* Check for the Timeout */
if(Timeout != HAL_MAX_DELAY)
{
if((Timeout == 0) || ((HAL_GetTick() - tickstart) > Timeout))
{
/* Disable TXE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts for the interrupt process */
__HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
__HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
__HAL_UART_DISABLE_IT(huart, UART_IT_PE);
__HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
huart->State = HAL_UART_STATE_TIMEOUT;
/* Process Unlocked */
__HAL_UNLOCK(huart);
return HAL_TIMEOUT;
}
}
}
}
else
{
while(__HAL_UART_GET_FLAG(huart, Flag) != RESET)
{
/* Check for the Timeout */
if(Timeout != HAL_MAX_DELAY)
{
if((Timeout == 0) || ((HAL_GetTick() - tickstart) > Timeout))
{
/* Disable TXE, RXNE, PE and ERR (Frame error, noise error, overrun error) interrupts for the interrupt process */
__HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
__HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
__HAL_UART_DISABLE_IT(huart, UART_IT_PE);
__HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
huart->State = HAL_UART_STATE_TIMEOUT;
/* Process Unlocked */
__HAL_UNLOCK(huart);
return HAL_TIMEOUT;
}
}
}
}
return HAL_OK;
}
/**
* @brief DMA UART transmit process complete callback
* @param hdma: DMA handle
* @retval None
*/
static void UART_DMATransmitCplt(DMA_HandleTypeDef *hdma)
{
UART_HandleTypeDef* huart = ( UART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
huart->TxXferCount = 0;
/* Disable the DMA transfer for transmit request by setting the DMAT bit
in the UART CR3 register */
huart->Instance->CR3 &= (uint32_t)~((uint32_t)USART_CR3_DMAT);
/* Wait for UART TC Flag */
if(UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_TC, RESET, HAL_UART_TXDMA_TIMEOUTVALUE) != HAL_OK)
{
/* Timeout Occured */
huart->State = HAL_UART_STATE_TIMEOUT;
HAL_UART_ErrorCallback(huart);
}
else
{
/* No Timeout */
/* Check if a receive process is ongoing or not */
if(huart->State == HAL_UART_STATE_BUSY_TX_RX)
{
huart->State = HAL_UART_STATE_BUSY_RX;
}
else
{
huart->State = HAL_UART_STATE_READY;
}
HAL_UART_TxCpltCallback(huart);
}
}
/**
* @brief DMA UART transmit process half complete callback
* @param hdma : DMA handle
* @retval None
*/
static void UART_DMATxHalfCplt(DMA_HandleTypeDef *hdma)
{
UART_HandleTypeDef* huart = (UART_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;
HAL_UART_TxHalfCpltCallback(huart);
}
/**
* @brief DMA UART receive process complete callback
* @param hdma: DMA handle
* @retval None
*/
static void UART_DMAReceiveCplt(DMA_HandleTypeDef *hdma)
{
UART_HandleTypeDef* huart = ( UART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
huart->RxXferCount = 0;
/* Disable the DMA transfer for the receiver request by setting the DMAR bit
in the UART CR3 register */
huart->Instance->CR3 &= (uint32_t)~((uint32_t)USART_CR3_DMAR);
/* Check if a transmit Process is ongoing or not */
if(huart->State == HAL_UART_STATE_BUSY_TX_RX)
{
huart->State = HAL_UART_STATE_BUSY_TX;
}
else
{
huart->State = HAL_UART_STATE_READY;
}
HAL_UART_RxCpltCallback(huart);
}
/**
* @brief DMA UART receive process half complete callback
* @param hdma : DMA handle
* @retval None
*/
static void UART_DMARxHalfCplt(DMA_HandleTypeDef *hdma)
{
UART_HandleTypeDef* huart = (UART_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;
HAL_UART_RxHalfCpltCallback(huart);
}
/**
* @brief DMA UART communication error callback
* @param hdma: DMA handle
* @retval None
*/
static void UART_DMAError(DMA_HandleTypeDef *hdma)
{
UART_HandleTypeDef* huart = ( UART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent;
huart->RxXferCount = 0;
huart->TxXferCount = 0;
huart->State= HAL_UART_STATE_READY;
huart->ErrorCode |= HAL_UART_ERROR_DMA;
HAL_UART_ErrorCallback(huart);
}
/**
* @brief Tx Transfer completed callbacks
* @param huart: uart handle
* @retval None
*/
__weak void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart)
{
/* NOTE : This function should not be modified, when the callback is needed,
the HAL_UART_TxCpltCallback can be implemented in the user file
*/
}
/**
* @brief Tx Half Transfer completed callbacks.
* @param huart: UART handle
* @retval None
*/
__weak void HAL_UART_TxHalfCpltCallback(UART_HandleTypeDef *huart)
{
/* NOTE: This function should not be modified, when the callback is needed,
the HAL_UART_TxHalfCpltCallback can be implemented in the user file
*/
}
/**
* @brief Rx Transfer completed callbacks
* @param huart: uart handle
* @retval None
*/
__weak void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
{
/* NOTE : This function should not be modified, when the callback is needed,
the HAL_UART_RxCpltCallback can be implemented in the user file
*/
}
/**
* @brief Rx Half Transfer completed callbacks.
* @param huart: UART handle
* @retval None
*/
__weak void HAL_UART_RxHalfCpltCallback(UART_HandleTypeDef *huart)
{
/* NOTE: This function should not be modified, when the callback is needed,
the HAL_UART_RxHalfCpltCallback can be implemented in the user file
*/
}
/**
* @brief UART error callbacks
* @param huart: uart handle
* @retval None
*/
__weak void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart)
{
/* NOTE : This function should not be modified, when the callback is needed,
the HAL_UART_ErrorCallback can be implemented in the user file
*/
}
/**
* @brief Send an amount of data in interrupt mode
* Function called under interruption only, once
* interruptions have been enabled by HAL_UART_Transmit_IT()
* @param huart: UART handle
* @retval HAL status
*/
HAL_StatusTypeDef UART_Transmit_IT(UART_HandleTypeDef *huart)
{
uint16_t* tmp;
if ((huart->State == HAL_UART_STATE_BUSY_TX) || (huart->State == HAL_UART_STATE_BUSY_TX_RX))
{
if(huart->TxXferCount == 0)
{
/* Disable the UART Transmit Data Register Empty Interrupt */
__HAL_UART_DISABLE_IT(huart, UART_IT_TXE);
/* Check if a receive Process is ongoing or not */
if(huart->State == HAL_UART_STATE_BUSY_TX_RX)
{
huart->State = HAL_UART_STATE_BUSY_RX;
}
else
{
/* Disable the UART Error Interrupt: (Frame error, noise error, overrun error) */
__HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
huart->State = HAL_UART_STATE_READY;
}
/* Wait on TC flag to be able to start a second transfer */
if(UART_WaitOnFlagUntilTimeout(huart, UART_FLAG_TC, RESET, HAL_UART_TIMEOUT_VALUE) != HAL_OK)
{
return HAL_TIMEOUT;
}
HAL_UART_TxCpltCallback(huart);
return HAL_OK;
}
else
{
if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
{
tmp = (uint16_t*) huart->pTxBuffPtr;
huart->Instance->TDR = (*tmp & (uint16_t)0x01FF);
huart->pTxBuffPtr += 2;
}
else
{
huart->Instance->TDR = (uint8_t)(*huart->pTxBuffPtr++ & (uint8_t)0xFF);
}
huart->TxXferCount--;
return HAL_OK;
}
}
else
{
return HAL_BUSY;
}
}
/**
* @brief Receive an amount of data in interrupt mode
* Function called under interruption only, once
* interruptions have been enabled by HAL_UART_Receive_IT()
* @param huart: UART handle
* @retval HAL status
*/
HAL_StatusTypeDef UART_Receive_IT(UART_HandleTypeDef *huart)
{
uint16_t* tmp;
uint16_t uhMask = huart->Mask;
if((huart->State == HAL_UART_STATE_BUSY_RX) || (huart->State == HAL_UART_STATE_BUSY_TX_RX))
{
if ((huart->Init.WordLength == UART_WORDLENGTH_9B) && (huart->Init.Parity == UART_PARITY_NONE))
{
tmp = (uint16_t*) huart->pRxBuffPtr ;
*tmp = (uint16_t)(huart->Instance->RDR & uhMask);
huart->pRxBuffPtr +=2;
}
else
{
*huart->pRxBuffPtr++ = (uint8_t)(huart->Instance->RDR & (uint8_t)uhMask);
}
if(--huart->RxXferCount == 0)
{
__HAL_UART_DISABLE_IT(huart, UART_IT_RXNE);
/* Check if a transmit Process is ongoing or not */
if(huart->State == HAL_UART_STATE_BUSY_TX_RX)
{
huart->State = HAL_UART_STATE_BUSY_TX;
}
else
{
/* Disable the UART Parity Error Interrupt */
__HAL_UART_DISABLE_IT(huart, UART_IT_PE);
/* Disable the UART Error Interrupt: (Frame error, noise error, overrun error) */
__HAL_UART_DISABLE_IT(huart, UART_IT_ERR);
huart->State = HAL_UART_STATE_READY;
}
HAL_UART_RxCpltCallback(huart);
return HAL_OK;
}
return HAL_OK;
}
else
{
return HAL_BUSY;
}
}
/**
* @}
*/
/** @defgroup HAL_UART_Group3 Peripheral Control functions
* @brief UART control functions
*
@verbatim
===============================================================================
##### Peripheral Control functions #####
===============================================================================
[..]
This subsection provides a set of functions allowing to control the UART.
(+) HAL_UART_GetState() API is helpful to check in run-time the state of the UART peripheral.
(+) HAL_MultiProcessor_EnableMuteMode() API enables mute mode
(+) HAL_MultiProcessor_DisableMuteMode() API disables mute mode
(+) HAL_MultiProcessor_EnterMuteMode() API enters mute mode
(+) HAL_MultiProcessor_EnableMuteMode() API enables mute mode
(+) HAL_UART_EnableStopMode() API enables the UART to wake up the MCU from stop mode
(+) HAL_UART_DisableStopMode() API disables the above functionality
(+) UART_SetConfig() API configures the UART peripheral
(+) UART_AdvFeatureConfig() API optionally configures the UART advanced features
(+) UART_CheckIdleState() API ensures that TEACK and/or REACK are set after initialization
(+) UART_Wakeup_AddressConfig() API configures the wake-up from stop mode parameters
(+) HAL_HalfDuplex_EnableTransmitter() API disables receiver and enables transmitter
(+) HAL_HalfDuplex_EnableReceiver() API disables transmitter and enables receiver
@endverbatim
* @{
*/
/**
* @brief Enable UART in mute mode (doesn't mean UART enters mute mode;
* to enter mute mode, HAL_MultiProcessor_EnterMuteMode() API must be called)
* @param huart: UART handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_MultiProcessor_EnableMuteMode(UART_HandleTypeDef *huart)
{
/* Process Locked */
__HAL_LOCK(huart);
huart->State = HAL_UART_STATE_BUSY;
/* Enable USART mute mode by setting the MME bit in the CR1 register */
huart->Instance->CR1 |= USART_CR1_MME;
huart->State = HAL_UART_STATE_READY;
return (UART_CheckIdleState(huart));
}
/**
* @brief Disable UART mute mode (doesn't mean it actually wakes up the software,
* as it may not have been in mute mode at this very moment).
* @param huart: uart handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_MultiProcessor_DisableMuteMode(UART_HandleTypeDef *huart)
{
/* Process Locked */
__HAL_LOCK(huart);
huart->State = HAL_UART_STATE_BUSY;
/* Disable USART mute mode by clearing the MME bit in the CR1 register */
huart->Instance->CR1 &= ~(USART_CR1_MME);
huart->State = HAL_UART_STATE_READY;
return (UART_CheckIdleState(huart));
}
/**
* @brief Enter UART mute mode (means UART actually enters mute mode).
* To exit from mute mode, HAL_MultiProcessor_DisableMuteMode() API must be called.
* @param huart: uart handle
* @retval HAL status
*/
void HAL_MultiProcessor_EnterMuteMode(UART_HandleTypeDef *huart)
{
__HAL_UART_SEND_REQ(huart, UART_MUTE_MODE_REQUEST);
}
/**
* @brief return the UART state
* @param huart: uart handle
* @retval HAL state
*/
HAL_UART_StateTypeDef HAL_UART_GetState(UART_HandleTypeDef *huart)
{
return huart->State;
}
/**
* @brief Return the UART error code
* @param huart : pointer to a UART_HandleTypeDef structure that contains
* the configuration information for the specified UART.
* @retval UART Error Code
*/
uint32_t HAL_UART_GetError(UART_HandleTypeDef *huart)
{
return huart->ErrorCode;
}
/**
* @brief Configure the UART peripheral
* @param huart: uart handle
* @retval None
*/
HAL_StatusTypeDef UART_SetConfig(UART_HandleTypeDef *huart)
{
uint32_t tmpreg = 0x00000000;
UART_ClockSourceTypeDef clocksource = UART_CLOCKSOURCE_UNDEFINED;
uint16_t brrtemp = 0x0000;
uint16_t usartdiv = 0x0000;
HAL_StatusTypeDef ret = HAL_OK;
/* Check the parameters */
assert_param(IS_UART_BAUDRATE(huart->Init.BaudRate));
assert_param(IS_UART_WORD_LENGTH(huart->Init.WordLength));
assert_param(IS_UART_STOPBITS(huart->Init.StopBits));
assert_param(IS_UART_PARITY(huart->Init.Parity));
assert_param(IS_UART_MODE(huart->Init.Mode));
assert_param(IS_UART_HARDWARE_FLOW_CONTROL(huart->Init.HwFlowCtl));
assert_param(IS_UART_ONEBIT_SAMPLING(huart->Init.OneBitSampling));
/*-------------------------- USART CR1 Configuration -----------------------*/
/* Clear M, PCE, PS, TE, RE and OVER8 bits and configure
* the UART Word Length, Parity, Mode and oversampling:
* set the M bits according to huart->Init.WordLength value
* set PCE and PS bits according to huart->Init.Parity value
* set TE and RE bits according to huart->Init.Mode value
* set OVER8 bit according to huart->Init.OverSampling value */
tmpreg = (uint32_t)huart->Init.WordLength | huart->Init.Parity | huart->Init.Mode | huart->Init.OverSampling ;
MODIFY_REG(huart->Instance->CR1, UART_CR1_FIELDS, tmpreg);
/*-------------------------- USART CR2 Configuration -----------------------*/
/* Configure the UART Stop Bits: Set STOP[13:12] bits according
* to huart->Init.StopBits value */
MODIFY_REG(huart->Instance->CR2, USART_CR2_STOP, huart->Init.StopBits);
/*-------------------------- USART CR3 Configuration -----------------------*/
/* Configure
* - UART HardWare Flow Control: set CTSE and RTSE bits according
* to huart->Init.HwFlowCtl value
* - one-bit sampling method versus three samples' majority rule according
* to huart->Init.OneBitSampling */
tmpreg = (uint32_t)huart->Init.HwFlowCtl | huart->Init.OneBitSampling ;
MODIFY_REG(huart->Instance->CR3, (USART_CR3_RTSE | USART_CR3_CTSE | USART_CR3_ONEBIT), tmpreg);
/*-------------------------- USART BRR Configuration -----------------------*/
__HAL_UART_GETCLOCKSOURCE(huart, clocksource);
/* Check the Over Sampling to set Baud Rate Register */
if (huart->Init.OverSampling == UART_OVERSAMPLING_8)
{
switch (clocksource)
{
case UART_CLOCKSOURCE_PCLK1:
usartdiv = (uint16_t)(__DIV_SAMPLING8(HAL_RCC_GetPCLK1Freq(), huart->Init.BaudRate));
break;
case UART_CLOCKSOURCE_HSI:
usartdiv = (uint16_t)(__DIV_SAMPLING8(HSI_VALUE, huart->Init.BaudRate));
break;
case UART_CLOCKSOURCE_SYSCLK:
usartdiv = (uint16_t)(__DIV_SAMPLING8(HAL_RCC_GetSysClockFreq(), huart->Init.BaudRate));
break;
case UART_CLOCKSOURCE_LSE:
usartdiv = (uint16_t)(__DIV_SAMPLING8(LSE_VALUE, huart->Init.BaudRate));
break;
case UART_CLOCKSOURCE_UNDEFINED:
default:
ret = HAL_ERROR;
break;
}
brrtemp = usartdiv & 0xFFF0;
brrtemp |= ((usartdiv & 0x000F) >> 1U);
huart->Instance->BRR = brrtemp;
}
else
{
switch (clocksource)
{
case UART_CLOCKSOURCE_PCLK1:
huart->Instance->BRR = (uint16_t)(__DIV_SAMPLING16(HAL_RCC_GetPCLK1Freq(), huart->Init.BaudRate));
break;
case UART_CLOCKSOURCE_HSI:
huart->Instance->BRR = (uint16_t)(__DIV_SAMPLING16(HSI_VALUE, huart->Init.BaudRate));
break;
case UART_CLOCKSOURCE_SYSCLK:
huart->Instance->BRR = (uint16_t)(__DIV_SAMPLING16(HAL_RCC_GetSysClockFreq(), huart->Init.BaudRate));
break;
case UART_CLOCKSOURCE_LSE:
huart->Instance->BRR = (uint16_t)(__DIV_SAMPLING16(LSE_VALUE, huart->Init.BaudRate));
break;
case UART_CLOCKSOURCE_UNDEFINED:
default:
ret = HAL_ERROR;
break;
}
}
return ret;
}
/**
* @brief Configure the UART peripheral advanced feautures
* @param huart: uart handle
* @retval None
*/
void UART_AdvFeatureConfig(UART_HandleTypeDef *huart)
{
/* Check whether the set of advanced features to configure is properly set */
assert_param(IS_UART_ADVFEATURE_INIT(huart->AdvancedInit.AdvFeatureInit));
/* if required, configure TX pin active level inversion */
if (HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_TXINVERT_INIT))
{
assert_param(IS_UART_ADVFEATURE_TXINV(huart->AdvancedInit.TxPinLevelInvert));
MODIFY_REG(huart->Instance->CR2, USART_CR2_TXINV, huart->AdvancedInit.TxPinLevelInvert);
}
/* if required, configure RX pin active level inversion */
if (HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_RXINVERT_INIT))
{
assert_param(IS_UART_ADVFEATURE_RXINV(huart->AdvancedInit.RxPinLevelInvert));
MODIFY_REG(huart->Instance->CR2, USART_CR2_RXINV, huart->AdvancedInit.RxPinLevelInvert);
}
/* if required, configure data inversion */
if (HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_DATAINVERT_INIT))
{
assert_param(IS_UART_ADVFEATURE_DATAINV(huart->AdvancedInit.DataInvert));
MODIFY_REG(huart->Instance->CR2, USART_CR2_DATAINV, huart->AdvancedInit.DataInvert);
}
/* if required, configure RX/TX pins swap */
if (HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_SWAP_INIT))
{
assert_param(IS_UART_ADVFEATURE_SWAP(huart->AdvancedInit.Swap));
MODIFY_REG(huart->Instance->CR2, USART_CR2_SWAP, huart->AdvancedInit.Swap);
}
/* if required, configure RX overrun detection disabling */
if (HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_RXOVERRUNDISABLE_INIT))
{
assert_param(IS_UART_OVERRUN(huart->AdvancedInit.OverrunDisable));
MODIFY_REG(huart->Instance->CR3, USART_CR3_OVRDIS, huart->AdvancedInit.OverrunDisable);
}
/* if required, configure DMA disabling on reception error */
if (HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_DMADISABLEONERROR_INIT))
{
assert_param(IS_UART_ADVFEATURE_DMAONRXERROR(huart->AdvancedInit.DMADisableonRxError));
MODIFY_REG(huart->Instance->CR3, USART_CR3_DDRE, huart->AdvancedInit.DMADisableonRxError);
}
/* if required, configure auto Baud rate detection scheme */
if (HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_AUTOBAUDRATE_INIT))
{
assert_param(IS_USART_AUTOBAUDRATE_DETECTION_INSTANCE(huart->Instance));
assert_param(IS_UART_ADVFEATURE_AUTOBAUDRATE(huart->AdvancedInit.AutoBaudRateEnable));
MODIFY_REG(huart->Instance->CR2, USART_CR2_ABREN, huart->AdvancedInit.AutoBaudRateEnable);
/* set auto Baudrate detection parameters if detection is enabled */
if (huart->AdvancedInit.AutoBaudRateEnable == UART_ADVFEATURE_AUTOBAUDRATE_ENABLE)
{
assert_param(IS_UART_ADVFEATURE_AUTOBAUDRATEMODE(huart->AdvancedInit.AutoBaudRateMode));
MODIFY_REG(huart->Instance->CR2, USART_CR2_ABRMODE, huart->AdvancedInit.AutoBaudRateMode);
}
}
/* if required, configure MSB first on communication line */
if (HAL_IS_BIT_SET(huart->AdvancedInit.AdvFeatureInit, UART_ADVFEATURE_MSBFIRST_INIT))
{
assert_param(IS_UART_ADVFEATURE_MSBFIRST(huart->AdvancedInit.MSBFirst));
MODIFY_REG(huart->Instance->CR2, USART_CR2_MSBFIRST, huart->AdvancedInit.MSBFirst);
}
}
/**
* @brief Check the UART Idle State
* @param huart: uart handle
* @retval HAL status
*/
HAL_StatusTypeDef UART_CheckIdleState(UART_HandleTypeDef *huart)
{
/* Initialize the UART ErrorCode */
huart->ErrorCode = HAL_UART_ERROR_NONE;
/* Check if the Transmitter is enabled */
if((huart->Instance->CR1 & USART_CR1_TE) == USART_CR1_TE)
{
/* Wait until TEACK flag is set */
if(UART_WaitOnFlagUntilTimeout(huart, USART_ISR_TEACK, RESET, HAL_UART_TIMEOUT_VALUE) != HAL_OK)
{
/* Timeout Occured */
return HAL_TIMEOUT;
}
}
/* Check if the Receiver is enabled */
if((huart->Instance->CR1 & USART_CR1_RE) == USART_CR1_RE)
{
/* Wait until REACK flag is set */
if(UART_WaitOnFlagUntilTimeout(huart, USART_ISR_REACK, RESET, HAL_UART_TIMEOUT_VALUE) != HAL_OK)
{
/* Timeout Occured */
return HAL_TIMEOUT;
}
}
/* Initialize the UART State */
huart->State= HAL_UART_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(huart);
return HAL_OK;
}
/**
* @brief Enables the UART transmitter and disables the UART receiver.
* @param huart: UART handle
* @retval HAL status
* @retval None
*/
HAL_StatusTypeDef HAL_HalfDuplex_EnableTransmitter(UART_HandleTypeDef *huart)
{
/* Process Locked */
__HAL_LOCK(huart);
huart->State = HAL_UART_STATE_BUSY;
/* Clear TE and RE bits */
CLEAR_BIT(huart->Instance->CR1, (USART_CR1_TE | USART_CR1_RE));
/* Enable the USART's transmit interface by setting the TE bit in the USART CR1 register */
SET_BIT(huart->Instance->CR1, USART_CR1_TE);
huart->State = HAL_UART_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(huart);
return HAL_OK;
}
/**
* @brief Enables the UART receiver and disables the UART transmitter.
* @param huart: UART handle
* @retval HAL status
*/
HAL_StatusTypeDef HAL_HalfDuplex_EnableReceiver(UART_HandleTypeDef *huart)
{
/* Process Locked */
__HAL_LOCK(huart);
huart->State = HAL_UART_STATE_BUSY;
/* Clear TE and RE bits */
CLEAR_BIT(huart->Instance->CR1, (USART_CR1_TE | USART_CR1_RE));
/* Enable the USART's receive interface by setting the RE bit in the USART CR1 register */
SET_BIT(huart->Instance->CR1, USART_CR1_RE);
huart->State = HAL_UART_STATE_READY;
/* Process Unlocked */
__HAL_UNLOCK(huart);
return HAL_OK;
}
/**
* @}
*/
/**
* @}
*/
#endif /* HAL_UART_MODULE_ENABLED */
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
Raw
stm32f0xx_hal_uart.h
/**
******************************************************************************
* @file stm32f0xx_hal_uart.h
* @author MCD Application Team
* @version V1.0.1
* @date 18-June-2014
* @brief Header file of UART HAL module.
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __STM32F0xx_HAL_UART_H
#define __STM32F0xx_HAL_UART_H
#ifdef __cplusplus
extern "C" {
#endif
/* Includes ------------------------------------------------------------------*/
#include "stm32f0xx_hal_def.h"
/** @addtogroup STM32F0xx_HAL_Driver
* @{
*/
/** @addtogroup UART
* @{
*/
/* Exported types ------------------------------------------------------------*/
/**
* @brief UART Init Structure definition
*/
typedef struct
{
uint32_t BaudRate; /*!< This member configures the UART communication baud rate.
The baud rate register is computed using the following formula:
- If oversampling is 16 or in LIN mode (LIN mode not available on F030xx devices),
Baud Rate Register = ((PCLKx) / ((huart->Init.BaudRate)))
- If oversampling is 8,
Baud Rate Register[15:4] = ((2 * PCLKx) / ((huart->Init.BaudRate)))[15:4]
Baud Rate Register[3] = 0
Baud Rate Register[2:0] = (((2 * PCLKx) / ((huart->Init.BaudRate)))[3:0]) >> 1 */
uint32_t WordLength; /*!< Specifies the number of data bits transmitted or received in a frame.
This parameter can be a value of @ref UARTEx_Word_Length */
uint32_t StopBits; /*!< Specifies the number of stop bits transmitted.
This parameter can be a value of @ref UART_Stop_Bits */
uint32_t Parity; /*!< Specifies the parity mode.
This parameter can be a value of @ref UART_Parity
@note When parity is enabled, the computed parity is inserted
at the MSB position of the transmitted data (9th bit when
the word length is set to 9 data bits; 8th bit when the
word length is set to 8 data bits). */
uint32_t Mode; /*!< Specifies wether the Receive or Transmit mode is enabled or disabled.
This parameter can be a value of @ref UART_Mode */
uint32_t HwFlowCtl; /*!< Specifies wether the hardware flow control mode is enabled
or disabled.
This parameter can be a value of @ref UART_Hardware_Flow_Control */
uint32_t OverSampling; /*!< Specifies wether the Over sampling 8 is enabled or disabled, to achieve higher speed (up to fPCLK/8).
This parameter can be a value of @ref UART_Over_Sampling */
uint32_t OneBitSampling; /*!< Specifies wether a single sample or three samples' majority vote is selected.
Selecting the single sample method increases the receiver tolerance to clock
deviations. This parameter can be a value of @ref UART_OneBit_Sampling. */
}UART_InitTypeDef;
/**
* @brief UART Advanced Features initalization structure definition
*/
typedef struct
{
uint32_t AdvFeatureInit; /*!< Specifies which advanced UART features is initialized. Several
Advanced Features may be initialized at the same time .
This parameter can be a value of @ref UART_Advanced_Features_Initialization_Type */
uint32_t TxPinLevelInvert; /*!< Specifies whether the TX pin active level is inverted.
This parameter can be a value of @ref UART_Tx_Inv */
uint32_t RxPinLevelInvert; /*!< Specifies whether the RX pin active level is inverted.
This parameter can be a value of @ref UART_Rx_Inv */
uint32_t DataInvert; /*!< Specifies whether data are inverted (positive/direct logic
vs negative/inverted logic).
This parameter can be a value of @ref UART_Data_Inv */
uint32_t Swap; /*!< Specifies whether TX and RX pins are swapped.
This parameter can be a value of @ref UART_Rx_Tx_Swap */
uint32_t OverrunDisable; /*!< Specifies whether the reception overrun detection is disabled.
This parameter can be a value of @ref UART_Overrun_Disable */
uint32_t DMADisableonRxError; /*!< Specifies whether the DMA is disabled in case of reception error.
This parameter can be a value of @ref UART_DMA_Disable_on_Rx_Error */
uint32_t AutoBaudRateEnable; /*!< Specifies whether auto Baud rate detection is enabled.
This parameter can be a value of @ref UART_AutoBaudRate_Enable */
uint32_t AutoBaudRateMode; /*!< If auto Baud rate detection is enabled, specifies how the rate
detection is carried out.
This parameter can be a value of @ref UARTEx_AutoBaud_Rate_Mode */
uint32_t MSBFirst; /*!< Specifies whether MSB is sent first on UART line.
This parameter can be a value of @ref UART_MSB_First */
} UART_AdvFeatureInitTypeDef;
/**
* @brief UART wake up from stop mode parameters
*/
typedef struct
{
uint32_t WakeUpEvent; /*!< Specifies which event will activat the Wakeup from Stop mode flag (WUF).
This parameter can be a value of @ref UART_WakeUp_from_Stop_Selection.
If set to UART_WAKEUP_ON_ADDRESS, the two other fields below must
be filled up. */
uint16_t AddressLength; /*!< Specifies whether the address is 4 or 7-bit long.
This parameter can be a value of @ref UART_WakeUp_Address_Length */
uint8_t Address; /*!< UART/USART node address (7-bit long max) */
} UART_WakeUpTypeDef;
/**
* @brief HAL UART State structures definition
*/
typedef enum
{
HAL_UART_STATE_RESET = 0x00, /*!< Peripheral is not initialized */
HAL_UART_STATE_READY = 0x01, /*!< Peripheral Initialized and ready for use */
HAL_UART_STATE_BUSY = 0x02, /*!< an internal process is ongoing */
HAL_UART_STATE_BUSY_TX = 0x12, /*!< Data Transmission process is ongoing */
HAL_UART_STATE_BUSY_RX = 0x22, /*!< Data Reception process is ongoing */
HAL_UART_STATE_BUSY_TX_RX = 0x32, /*!< Data Transmission and Reception process is ongoing */
HAL_UART_STATE_TIMEOUT = 0x03, /*!< Timeout state */
HAL_UART_STATE_ERROR = 0x04 /*!< Error */
}HAL_UART_StateTypeDef;
/**
* @brief HAL UART Error Code structure definition
*/
typedef enum
{
HAL_UART_ERROR_NONE = 0x00, /*!< No error */
HAL_UART_ERROR_PE = 0x01, /*!< Parity error */
HAL_UART_ERROR_NE = 0x02, /*!< Noise error */
HAL_UART_ERROR_FE = 0x04, /*!< frame error */
HAL_UART_ERROR_ORE = 0x08, /*!< Overrun error */
HAL_UART_ERROR_DMA = 0x10 /*!< DMA transfer error */
}HAL_UART_ErrorTypeDef;
/**
* @brief UART clock sources definition
*/
typedef enum
{
UART_CLOCKSOURCE_PCLK1 = 0x00, /*!< PCLK1 clock source */
UART_CLOCKSOURCE_HSI = 0x02, /*!< HSI clock source */
UART_CLOCKSOURCE_SYSCLK = 0x04, /*!< SYSCLK clock source */
UART_CLOCKSOURCE_LSE = 0x08, /*!< LSE clock source */
UART_CLOCKSOURCE_UNDEFINED = 0x10 /*!< undefined clock source */
}UART_ClockSourceTypeDef;
/**
* @brief UART handle Structure definition
*/
typedef struct
{
USART_TypeDef *Instance; /* UART registers base address */
UART_InitTypeDef Init; /* UART communication parameters */
UART_AdvFeatureInitTypeDef AdvancedInit; /* UART Advanced Features initialization parameters */
uint8_t *pTxBuffPtr; /* Pointer to UART Tx transfer Buffer */
uint16_t TxXferSize; /* UART Tx Transfer size */
uint16_t TxXferCount; /* UART Tx Transfer Counter */
uint8_t *pRxBuffPtr; /* Pointer to UART Rx transfer Buffer */
uint16_t RxXferSize; /* UART Rx Transfer size */
uint16_t RxXferCount; /* UART Rx Transfer Counter */
uint16_t Mask; /* UART Rx RDR register mask */
DMA_HandleTypeDef *hdmatx; /* UART Tx DMA Handle parameters */
DMA_HandleTypeDef *hdmarx; /* UART Rx DMA Handle parameters */
HAL_LockTypeDef Lock; /* Locking object */
HAL_UART_StateTypeDef State; /* UART communication state */
HAL_UART_ErrorTypeDef ErrorCode; /* UART Error code */
}UART_HandleTypeDef;
/* Exported constants --------------------------------------------------------*/
/** @defgroup UART_Exported_Constants
* @{
*/
/** @defgroup UART_Stop_Bits UART Number of Stop Bits
* @{
*/
#define UART_STOPBITS_1 ((uint32_t)0x0000)
#define UART_STOPBITS_2 ((uint32_t)USART_CR2_STOP_1)
#define IS_UART_STOPBITS(STOPBITS) (((STOPBITS) == UART_STOPBITS_1) || \
((STOPBITS) == UART_STOPBITS_2))
/**
* @}
*/
/** @defgroup UART_Parity UART Parity
* @{
*/
#define UART_PARITY_NONE ((uint32_t)0x0000)
#define UART_PARITY_EVEN ((uint32_t)USART_CR1_PCE)
#define UART_PARITY_ODD ((uint32_t)(USART_CR1_PCE | USART_CR1_PS))
#define IS_UART_PARITY(PARITY) (((PARITY) == UART_PARITY_NONE) || \
((PARITY) == UART_PARITY_EVEN) || \
((PARITY) == UART_PARITY_ODD))
/**
* @}
*/
/** @defgroup UART_Hardware_Flow_Control UART Hardware Flow Control
* @{
*/
#define UART_HWCONTROL_NONE ((uint32_t)0x0000)
#define UART_HWCONTROL_RTS ((uint32_t)USART_CR3_RTSE)
#define UART_HWCONTROL_CTS ((uint32_t)USART_CR3_CTSE)
#define UART_HWCONTROL_RTS_CTS ((uint32_t)(USART_CR3_RTSE | USART_CR3_CTSE))
#define IS_UART_HARDWARE_FLOW_CONTROL(CONTROL)\
(((CONTROL) == UART_HWCONTROL_NONE) || \
((CONTROL) == UART_HWCONTROL_RTS) || \
((CONTROL) == UART_HWCONTROL_CTS) || \
((CONTROL) == UART_HWCONTROL_RTS_CTS))
/**
* @}
*/
/** @defgroup UART_Mode UART Transfer Mode
* @{
*/
#define UART_MODE_RX ((uint32_t)USART_CR1_RE)
#define UART_MODE_TX ((uint32_t)USART_CR1_TE)
#define UART_MODE_TX_RX ((uint32_t)(USART_CR1_TE |USART_CR1_RE))
#define IS_UART_MODE(MODE) ((((MODE) & (~((uint32_t)(UART_MODE_TX_RX)))) == (uint32_t)0x00) && ((MODE) != (uint32_t)0x00))
/**
* @}
*/
/** @defgroup UART_State UART State
* @{
*/
#define UART_STATE_DISABLE ((uint32_t)0x0000)
#define UART_STATE_ENABLE ((uint32_t)USART_CR1_UE)
#define IS_UART_STATE(STATE) (((STATE) == UART_STATE_DISABLE) || \
((STATE) == UART_STATE_ENABLE))
/**
* @}
*/
/** @defgroup UART_Over_Sampling UART Over Sampling
* @{
*/
#define UART_OVERSAMPLING_16 ((uint32_t)0x0000)
#define UART_OVERSAMPLING_8 ((uint32_t)USART_CR1_OVER8)
#define IS_UART_OVERSAMPLING(SAMPLING) (((SAMPLING) == UART_OVERSAMPLING_16) || \
((SAMPLING) == UART_OVERSAMPLING_8))
/**
* @}
*/
/** @defgroup UART_OneBit_Sampling UART One Bit Sampling Method
* @{
*/
#define UART_ONEBIT_SAMPLING_DISABLED ((uint32_t)0x0000)
#define UART_ONEBIT_SAMPLING_ENABLED ((uint32_t)USART_CR3_ONEBIT)
#define IS_UART_ONEBIT_SAMPLING(ONEBIT) (((ONEBIT) == UART_ONEBIT_SAMPLING_DISABLED) || \
((ONEBIT) == UART_ONEBIT_SAMPLING_ENABLED))
/**
* @}
*/
/** @defgroup UART_Receiver_TimeOut UART Receiver TimeOut
* @{
*/
#define UART_RECEIVER_TIMEOUT_DISABLE ((uint32_t)0x00000000)
#define UART_RECEIVER_TIMEOUT_ENABLE ((uint32_t)USART_CR2_RTOEN)
#define IS_UART_RECEIVER_TIMEOUT(TIMEOUT) (((TIMEOUT) == UART_RECEIVER_TIMEOUT_DISABLE) || \
((TIMEOUT) == UART_RECEIVER_TIMEOUT_ENABLE))
/**
* @}
*/
/** @defgroup UART_One_Bit UART One Bit sampling
* @{
*/
#define UART_ONE_BIT_SAMPLE_DISABLED ((uint32_t)0x00000000)
#define UART_ONE_BIT_SAMPLE_ENABLED ((uint32_t)USART_CR3_ONEBIT)
#define IS_UART_ONEBIT_SAMPLE(ONEBIT) (((ONEBIT) == UART_ONE_BIT_SAMPLE_DISABLED) || \
((ONEBIT) == UART_ONE_BIT_SAMPLE_ENABLED))
/**
* @}
*/
/** @defgroup UART_DMA_Tx UART DMA Tx
* @{
*/
#define UART_DMA_TX_DISABLE ((uint32_t)0x00000000)
#define UART_DMA_TX_ENABLE ((uint32_t)USART_CR3_DMAT)
#define IS_UART_DMA_TX(DMATX) (((DMATX) == UART_DMA_TX_DISABLE) || \
((DMATX) == UART_DMA_TX_ENABLE))
/**
* @}
*/
/** @defgroup UART_DMA_Rx UART DMA Rx
* @{
*/
#define UART_DMA_RX_DISABLE ((uint32_t)0x0000)
#define UART_DMA_RX_ENABLE ((uint32_t)USART_CR3_DMAR)
#define IS_UART_DMA_RX(DMARX) (((DMARX) == UART_DMA_RX_DISABLE) || \
((DMARX) == UART_DMA_RX_ENABLE))
/**
* @}
*/
/** @defgroup UART_Half_Duplex_Selection UART Half Duplex Selection
* @{
*/
#define UART_HALF_DUPLEX_DISABLE ((uint32_t)0x0000)
#define UART_HALF_DUPLEX_ENABLE ((uint32_t)USART_CR3_HDSEL)
#define IS_UART_HALF_DUPLEX(HDSEL) (((HDSEL) == UART_HALF_DUPLEX_DISABLE) || \
((HDSEL) == UART_HALF_DUPLEX_ENABLE))
/**
* @}
*/
/** @defgroup UART_WakeUp_Address_Length UART WakeUp Address Length
* @{
*/
#define UART_ADDRESS_DETECT_4B ((uint32_t)0x00000000)
#define UART_ADDRESS_DETECT_7B ((uint32_t)USART_CR2_ADDM7)
#define IS_UART_ADDRESSLENGTH_DETECT(ADDRESS) (((ADDRESS) == UART_ADDRESS_DETECT_4B) || \
((ADDRESS) == UART_ADDRESS_DETECT_7B))
/**
* @}
*/
/** @defgroup UART_WakeUp_Methods UART WakeUp Methods
* @{
*/
#define UART_WAKEUPMETHOD_IDLELINE ((uint32_t)0x00000000)
#define UART_WAKEUPMETHOD_ADDRESSMARK ((uint32_t)USART_CR1_WAKE)
#define IS_UART_WAKEUPMETHOD(WAKEUP) (((WAKEUP) == UART_WAKEUPMETHOD_IDLELINE) || \
((WAKEUP) == UART_WAKEUPMETHOD_ADDRESSMARK))
/**
* @}
*/
/** Elements values convention: 000000000XXYYYYYb
* - YYYYY : Interrupt source position in the XX register (5bits)
* - XX : Interrupt source register (2bits)
* - 01: CR1 register
* - 10: CR2 register
* - 11: CR3 register
*/
#define UART_IT_ERR ((uint16_t)0x0060)
/** Elements values convention: 0000ZZZZ00000000b
* - ZZZZ : Flag position in the ISR register(4bits)
*/
#define UART_IT_ORE ((uint16_t)0x0300)
#define UART_IT_NE ((uint16_t)0x0200)
#define UART_IT_FE ((uint16_t)0x0100)
/** @defgroup UART_Advanced_Features_Initialization_Type UART Advanced Feature Initialization Type
* @{
*/
#define UART_ADVFEATURE_NO_INIT ((uint32_t)0x00000000)
#define UART_ADVFEATURE_TXINVERT_INIT ((uint32_t)0x00000001)
#define UART_ADVFEATURE_RXINVERT_INIT ((uint32_t)0x00000002)
#define UART_ADVFEATURE_DATAINVERT_INIT ((uint32_t)0x00000004)
#define UART_ADVFEATURE_SWAP_INIT ((uint32_t)0x00000008)
#define UART_ADVFEATURE_RXOVERRUNDISABLE_INIT ((uint32_t)0x00000010)
#define UART_ADVFEATURE_DMADISABLEONERROR_INIT ((uint32_t)0x00000020)
#define UART_ADVFEATURE_AUTOBAUDRATE_INIT ((uint32_t)0x00000040)
#define UART_ADVFEATURE_MSBFIRST_INIT ((uint32_t)0x00000080)
#define IS_UART_ADVFEATURE_INIT(INIT) ((INIT) <= (UART_ADVFEATURE_NO_INIT | \
UART_ADVFEATURE_TXINVERT_INIT | \
UART_ADVFEATURE_RXINVERT_INIT | \
UART_ADVFEATURE_DATAINVERT_INIT | \
UART_ADVFEATURE_SWAP_INIT | \
UART_ADVFEATURE_RXOVERRUNDISABLE_INIT | \
UART_ADVFEATURE_DMADISABLEONERROR_INIT | \
UART_ADVFEATURE_AUTOBAUDRATE_INIT | \
UART_ADVFEATURE_MSBFIRST_INIT))
/**
* @}
*/
/** @defgroup UART_Tx_Inv UART Advanced Feature TX Pin Active Level Inversion
* @{
*/
#define UART_ADVFEATURE_TXINV_DISABLE ((uint32_t)0x00000000)
#define UART_ADVFEATURE_TXINV_ENABLE ((uint32_t)USART_CR2_TXINV)
#define IS_UART_ADVFEATURE_TXINV(TXINV) (((TXINV) == UART_ADVFEATURE_TXINV_DISABLE) || \
((TXINV) == UART_ADVFEATURE_TXINV_ENABLE))
/**
* @}
*/
/** @defgroup UART_Rx_Inv UART Advanced Feature RX Pin Active Level Inversion
* @{
*/
#define UART_ADVFEATURE_RXINV_DISABLE ((uint32_t)0x00000000)
#define UART_ADVFEATURE_RXINV_ENABLE ((uint32_t)USART_CR2_RXINV)
#define IS_UART_ADVFEATURE_RXINV(RXINV) (((RXINV) == UART_ADVFEATURE_RXINV_DISABLE) || \
((RXINV) == UART_ADVFEATURE_RXINV_ENABLE))
/**
* @}
*/
/** @defgroup UART_Data_Inv UART Advanced Feature Binary Data Inversion
* @{
*/
#define UART_ADVFEATURE_DATAINV_DISABLE ((uint32_t)0x00000000)
#define UART_ADVFEATURE_DATAINV_ENABLE ((uint32_t)USART_CR2_DATAINV)
#define IS_UART_ADVFEATURE_DATAINV(DATAINV) (((DATAINV) == UART_ADVFEATURE_DATAINV_DISABLE) || \
((DATAINV) == UART_ADVFEATURE_DATAINV_ENABLE))
/**
* @}
*/
/** @defgroup UART_Rx_Tx_Swap UART Advanced Feature RX TX Pins Swap
* @{
*/
#define UART_ADVFEATURE_SWAP_DISABLE ((uint32_t)0x00000000)
#define UART_ADVFEATURE_SWAP_ENABLE ((uint32_t)USART_CR2_SWAP)
#define IS_UART_ADVFEATURE_SWAP(SWAP) (((SWAP) == UART_ADVFEATURE_SWAP_DISABLE) || \
((SWAP) == UART_ADVFEATURE_SWAP_ENABLE))
/**
* @}
*/
/** @defgroup UART_Overrun_Disable UART Advanced Feature Overrun Disable
* @{
*/
#define UART_ADVFEATURE_OVERRUN_ENABLE ((uint32_t)0x00000000)
#define UART_ADVFEATURE_OVERRUN_DISABLE ((uint32_t)USART_CR3_OVRDIS)
#define IS_UART_OVERRUN(OVERRUN) (((OVERRUN) == UART_ADVFEATURE_OVERRUN_ENABLE) || \
((OVERRUN) == UART_ADVFEATURE_OVERRUN_DISABLE))
/**
* @}
*/
/** @defgroup UART_AutoBaudRate_Enable UART Advanced Feature Auto BaudRate Enable
* @{
*/
#define UART_ADVFEATURE_AUTOBAUDRATE_DISABLE ((uint32_t)0x00000000)
#define UART_ADVFEATURE_AUTOBAUDRATE_ENABLE ((uint32_t)USART_CR2_ABREN)
#define IS_UART_ADVFEATURE_AUTOBAUDRATE(AUTOBAUDRATE) (((AUTOBAUDRATE) == UART_ADVFEATURE_AUTOBAUDRATE_DISABLE) || \
((AUTOBAUDRATE) == UART_ADVFEATURE_AUTOBAUDRATE_ENABLE))
/**
* @}
*/
/** @defgroup UART_DMA_Disable_on_Rx_Error UART Advanced Feature DMA Disable On Rx Error
* @{
*/
#define UART_ADVFEATURE_DMA_ENABLEONRXERROR ((uint32_t)0x00000000)
#define UART_ADVFEATURE_DMA_DISABLEONRXERROR ((uint32_t)USART_CR3_DDRE)
#define IS_UART_ADVFEATURE_DMAONRXERROR(DMA) (((DMA) == UART_ADVFEATURE_DMA_ENABLEONRXERROR) || \
((DMA) == UART_ADVFEATURE_DMA_DISABLEONRXERROR))
/**
* @}
*/
/** @defgroup UART_MSB_First UART Advanced Feature MSB First
* @{
*/
#define UART_ADVFEATURE_MSBFIRST_DISABLE ((uint32_t)0x00000000)
#define UART_ADVFEATURE_MSBFIRST_ENABLE ((uint32_t)USART_CR2_MSBFIRST)
#define IS_UART_ADVFEATURE_MSBFIRST(MSBFIRST) (((MSBFIRST) == UART_ADVFEATURE_MSBFIRST_DISABLE) || \
((MSBFIRST) == UART_ADVFEATURE_MSBFIRST_ENABLE))
/**
* @}
*/
/** @defgroup UART_Mute_Mode UART Advanced Feature Mute Mode Enable
* @{
*/
#define UART_ADVFEATURE_MUTEMODE_DISABLE ((uint32_t)0x00000000)
#define UART_ADVFEATURE_MUTEMODE_ENABLE ((uint32_t)USART_CR1_MME)
#define IS_UART_MUTE_MODE(MUTE) (((MUTE) == UART_ADVFEATURE_MUTEMODE_DISABLE) || \
((MUTE) == UART_ADVFEATURE_MUTEMODE_ENABLE))
/**
* @}
*/
/** @defgroup UART_CR2_ADDRESS_LSB_POS UART Address-matching LSB Position In CR2 Register
* @{
*/
#define UART_CR2_ADDRESS_LSB_POS ((uint32_t) 24)
/**
* @}
*/
/** @defgroup UART_DriverEnable_Polarity UART DriverEnable Polarity
* @{
*/
#define UART_DE_POLARITY_HIGH ((uint32_t)0x00000000)
#define UART_DE_POLARITY_LOW ((uint32_t)USART_CR3_DEP)
#define IS_UART_DE_POLARITY(POLARITY) (((POLARITY) == UART_DE_POLARITY_HIGH) || \
((POLARITY) == UART_DE_POLARITY_LOW))
/**
* @}
*/
/** @defgroup UART_CR1_DEAT_ADDRESS_LSB_POS UART Driver Enable Assertion Time LSB Position In CR1 Register
* @{
*/
#define UART_CR1_DEAT_ADDRESS_LSB_POS ((uint32_t) 21)
/**
* @}
*/
/** @defgroup UART_CR1_DEDT_ADDRESS_LSB_POS UART Driver Enable DeAssertion Time LSB Position In CR1 Register
* @{
*/
#define UART_CR1_DEDT_ADDRESS_LSB_POS ((uint32_t) 16)
/**
* @}
*/
/** @defgroup UART_Interruption_Mask UART Interruptions Flag Mask
* @{
*/
#define UART_IT_MASK ((uint32_t)0x001F)
/**
* @}
*/
/** @defgroup UART_TimeOut_Value UART polling-based communications time-out value
* @{
*/
#define HAL_UART_TIMEOUT_VALUE 0x1FFFFFF
/**
* @}
*/
/**
* @}
*/
/* Exported macros -----------------------------------------------------------*/
/** @defgroup UART_Exported_Macros
* @{
*/
/** @brief Reset UART handle state
* @param __HANDLE__: UART handle.
* @retval None
*/
#define __HAL_UART_RESET_HANDLE_STATE(__HANDLE__) ((__HANDLE__)->State = HAL_UART_STATE_RESET)
/** @brief Checks whether the specified UART flag is set or not.
* @param __HANDLE__: specifies the UART Handle.
* This parameter can be UARTx where x: 1, 2, 3 or 4 to select the USART or
* UART peripheral (datasheet: up to four USART/UARTs)
* @param __FLAG__: specifies the flag to check.
* This parameter can be one of the following values:
* @arg UART_FLAG_REACK: Receive enable ackowledge flag
* @arg UART_FLAG_TEACK: Transmit enable ackowledge flag
* @arg UART_FLAG_WUF: Wake up from stop mode flag (not available on F030xx devices)
* @arg UART_FLAG_RWU: Receiver wake up flag (not available on F030xx devices)
* @arg UART_FLAG_SBKF: Send Break flag
* @arg UART_FLAG_CMF: Character match flag
* @arg UART_FLAG_BUSY: Busy flag
* @arg UART_FLAG_ABRF: Auto Baud rate detection flag
* @arg UART_FLAG_ABRE: Auto Baud rate detection error flag
* @arg UART_FLAG_EOBF: End of block flag (not available on F030xx devices)
* @arg UART_FLAG_RTOF: Receiver timeout flag
* @arg UART_FLAG_CTS: CTS Change flag
* @arg UART_FLAG_LBD: LIN Break detection flag (not available on F030xx devices)
* @arg UART_FLAG_TXE: Transmit data register empty flag
* @arg UART_FLAG_TC: Transmission Complete flag
* @arg UART_FLAG_RXNE: Receive data register not empty flag
* @arg UART_FLAG_IDLE: Idle Line detection flag
* @arg UART_FLAG_ORE: OverRun Error flag
* @arg UART_FLAG_NE: Noise Error flag
* @arg UART_FLAG_FE: Framing Error flag
* @arg UART_FLAG_PE: Parity Error flag
* @retval The new state of __FLAG__ (TRUE or FALSE).
*/
#define __HAL_UART_GET_FLAG(__HANDLE__, __FLAG__) (((__HANDLE__)->Instance->ISR & (__FLAG__)) == (__FLAG__))
/** @brief Enables the specified UART interrupt.
* @param __HANDLE__: specifies the UART Handle.
* This parameter can be UARTx where x: 1, 2, 3 or 4 to select the USART or
* UART peripheral. (datasheet: up to four USART/UARTs)
* @param __INTERRUPT__: specifies the UART interrupt source to enable.
* This parameter can be one of the following values:
* @arg UART_IT_WUF: Wakeup from stop mode interrupt (not available on F030xx devices)
* @arg UART_IT_CM: Character match interrupt
* @arg UART_IT_CTS: CTS change interrupt
* @arg UART_IT_LBD: LIN Break detection interrupt (not available on F030xx devices)
* @arg UART_IT_TXE: Transmit Data Register empty interrupt
* @arg UART_IT_TC: Transmission complete interrupt
* @arg UART_IT_RXNE: Receive Data register not empty interrupt
* @arg UART_IT_IDLE: Idle line detection interrupt
* @arg UART_IT_PE: Parity Error interrupt
* @arg UART_IT_ERR: Error interrupt(Frame error, noise error, overrun error)
* @retval None
*/
#define __HAL_UART_ENABLE_IT(__HANDLE__, __INTERRUPT__) (((((uint8_t)(__INTERRUPT__)) >> 5U) == 1)? ((__HANDLE__)->Instance->CR1 |= (1U << ((__INTERRUPT__) & UART_IT_MASK))): \
((((uint8_t)(__INTERRUPT__)) >> 5U) == 2)? ((__HANDLE__)->Instance->CR2 |= (1U << ((__INTERRUPT__) & UART_IT_MASK))): \
((__HANDLE__)->Instance->CR3 |= (1U << ((__INTERRUPT__) & UART_IT_MASK))))
/** @brief Disables the specified UART interrupt.
* @param __HANDLE__: specifies the UART Handle.
* This parameter can be UARTx where x: 1, 2, 3 or 4 to select the USART or
* UART peripheral. (datasheet: up to four USART/UARTs)
* @param __INTERRUPT__: specifies the UART interrupt source to disable.
* This parameter can be one of the following values:
* @arg UART_IT_WUF: Wakeup from stop mode interrupt (not available on F030xx devices)
* @arg UART_IT_CM: Character match interrupt
* @arg UART_IT_CTS: CTS change interrupt
* @arg UART_IT_LBD: LIN Break detection interrupt (not available on F030xx devices)
* @arg UART_IT_TXE: Transmit Data Register empty interrupt
* @arg UART_IT_TC: Transmission complete interrupt
* @arg UART_IT_RXNE: Receive Data register not empty interrupt
* @arg UART_IT_IDLE: Idle line detection interrupt
* @arg UART_IT_PE: Parity Error interrupt
* @arg UART_IT_ERR: Error interrupt(Frame error, noise error, overrun error)
* @retval None
*/
#define __HAL_UART_DISABLE_IT(__HANDLE__, __INTERRUPT__) (((((uint8_t)(__INTERRUPT__)) >> 5U) == 1)? ((__HANDLE__)->Instance->CR1 &= ~ (1U << ((__INTERRUPT__) & UART_IT_MASK))): \
((((uint8_t)(__INTERRUPT__)) >> 5U) == 2)? ((__HANDLE__)->Instance->CR2 &= ~ (1U << ((__INTERRUPT__) & UART_IT_MASK))): \
((__HANDLE__)->Instance->CR3 &= ~ (1U << ((__INTERRUPT__) & UART_IT_MASK))))
/** @brief Checks whether the specified UART interrupt has occurred or not.
* @param __HANDLE__: specifies the UART Handle.
* This parameter can be UARTx where x: 1, 2, 3 or 4 to select the USART or
* UART peripheral. (datasheet: up to four USART/UARTs)
* @param __IT__: specifies the UART interrupt to check.
* This parameter can be one of the following values:
* @arg UART_IT_WUF: Wakeup from stop mode interrupt (not available on F030xx devices)
* @arg UART_IT_CM: Character match interrupt
* @arg UART_IT_CTS: CTS change interrupt
* @arg UART_IT_LBD: LIN Break detection interrupt (not available on F030xx devices)
* @arg UART_IT_TXE: Transmit Data Register empty interrupt
* @arg UART_IT_TC: Transmission complete interrupt
* @arg UART_IT_RXNE: Receive Data register not empty interrupt
* @arg UART_IT_IDLE: Idle line detection interrupt
* @arg UART_IT_ORE: OverRun Error interrupt
* @arg UART_IT_NE: Noise Error interrupt
* @arg UART_IT_FE: Framing Error interrupt
* @arg UART_IT_PE: Parity Error interrupt
* @retval The new state of __IT__ (TRUE or FALSE).
*/
#define __HAL_UART_GET_IT(__HANDLE__, __IT__) ((__HANDLE__)->Instance->ISR & ((uint32_t)1 << ((__IT__)>> 0x08)))
/** @brief Checks whether the specified UART interrupt source is enabled.
* @param __HANDLE__: specifies the UART Handle.
* This parameter can be UARTx where x: 1, 2, 3 or 4 to select the USART or
* UART peripheral. (datasheet: up to four USART/UARTs)
* @param __IT__: specifies the UART interrupt source to check.
* This parameter can be one of the following values:
* @arg UART_IT_WUF: Wakeup from stop mode interrupt (not available on F030xx devices)
* @arg UART_IT_CM: Character match interrupt
* @arg UART_IT_CTS: CTS change interrupt
* @arg UART_IT_LBD: LIN Break detection interrupt (not available on F030xx devices)
* @arg UART_IT_TXE: Transmit Data Register empty interrupt
* @arg UART_IT_TC: Transmission complete interrupt
* @arg UART_IT_RXNE: Receive Data register not empty interrupt
* @arg UART_IT_IDLE: Idle line detection interrupt
* @arg UART_IT_ORE: OverRun Error interrupt
* @arg UART_IT_NE: Noise Error interrupt
* @arg UART_IT_FE: Framing Error interrupt
* @arg UART_IT_PE: Parity Error interrupt
* @retval The new state of __IT__ (TRUE or FALSE).
*/
#define __HAL_UART_GET_IT_SOURCE(__HANDLE__, __IT__) ((((((uint8_t)(__IT__)) >> 5U) == 1)? (__HANDLE__)->Instance->CR1:(((((uint8_t)(__IT__)) >> 5U) == 2)? \
(__HANDLE__)->Instance->CR2 : (__HANDLE__)->Instance->CR3)) & ((uint32_t)1 << (((uint16_t)(__IT__)) & UART_IT_MASK)))
/** @brief Clears the specified UART ISR flag, in setting the proper ICR register flag.
* @param __HANDLE__: specifies the UART Handle.
* This parameter can be UARTx where x: 1, 2, 3 or 4 to select the USART or
* UART peripheral. (datasheet: up to four USART/UARTs)
* @param __IT_CLEAR__: specifies the interrupt clear register flag that needs to be set
* to clear the corresponding interrupt
* This parameter can be one of the following values:
* @arg UART_CLEAR_PEF: Parity Error Clear Flag
* @arg UART_CLEAR_FEF: Framing Error Clear Flag
* @arg UART_CLEAR_NEF: Noise detected Clear Flag
* @arg UART_CLEAR_OREF: OverRun Error Clear Flag
* @arg UART_CLEAR_IDLEF: IDLE line detected Clear Flag
* @arg UART_CLEAR_TCF: Transmission Complete Clear Flag
* @arg UART_CLEAR_LBDF: LIN Break Detection Clear Flag (not available on F030xx devices)
* @arg UART_CLEAR_CTSF: CTS Interrupt Clear Flag
* @arg UART_CLEAR_RTOF: Receiver Time Out Clear Flag
* @arg UART_CLEAR_EOBF: End Of Block Clear Flag (not available on F030xx devices)
* @arg UART_CLEAR_CMF: Character Match Clear Flag
* @arg UART_CLEAR_WUF: Wake Up from stop mode Clear Flag (not available on F030xx devices)
* @retval None
*/
#define __HAL_UART_CLEAR_IT(__HANDLE__, __IT_CLEAR__) ((__HANDLE__)->Instance->ICR = (uint32_t)(__IT_CLEAR__))
/** @brief Set a specific UART request flag.
* @param __HANDLE__: specifies the UART Handle.
* This parameter can be UARTx where x: 1, 2, 3 or 4 to select the USART or
* UART peripheral. (datasheet: up to four USART/UARTs)
* @param __REQ__: specifies the request flag to set
* This parameter can be one of the following values:
* @arg UART_AUTOBAUD_REQUEST: Auto-Baud Rate Request
* @arg UART_SENDBREAK_REQUEST: Send Break Request
* @arg UART_MUTE_MODE_REQUEST: Mute Mode Request
* @arg UART_RXDATA_FLUSH_REQUEST: Receive Data flush Request
* @arg UART_TXDATA_FLUSH_REQUEST: Transmit data flush Request (not available on F030xx devices)
* @retval None
*/
#define __HAL_UART_SEND_REQ(__HANDLE__, __REQ__) ((__HANDLE__)->Instance->RQR |= (uint32_t)(__REQ__))
/** @brief Enable UART
* @param __HANDLE__: specifies the UART Handle.
* The Handle Instance can be UARTx where x: 1, 2, 3, 4 or 5 to select the UART peripheral
* @retval None
*/
#define __HAL_UART_ENABLE(__HANDLE__) ((__HANDLE__)->Instance->CR1 |= USART_CR1_UE)
/** @brief Disable UART
* @param __HANDLE__: specifies the UART Handle.
* The Handle Instance can be UARTx where x: 1, 2, 3, 4 or 5 to select the UART peripheral
* @retval None
*/
#define __HAL_UART_DISABLE(__HANDLE__) ((__HANDLE__)->Instance->CR1 &= ~USART_CR1_UE)
/** @brief BRR division operation to set BRR register in 8-bit oversampling mode
* @param _PCLK_: UART clock
* @param _BAUD_: Baud rate set by the user
* @retval Division result
*/
#define __DIV_SAMPLING8(_PCLK_, _BAUD_) (((_PCLK_)*2)/((_BAUD_)))
/** @brief BRR division operation to set BRR register in 16-bit oversampling mode
* @param _PCLK_: UART clock
* @param _BAUD_: Baud rate set by the user
* @retval Division result
*/
#define __DIV_SAMPLING16(_PCLK_, _BAUD_) (((_PCLK_))/((_BAUD_)))
/** @brief Check UART Baud rate
* @param BAUDRATE: Baudrate specified by the user
* The maximum Baud Rate is derived from the maximum clock on F0 (i.e. 48 MHz)
* divided by the smallest oversampling used on the USART (i.e. 8)
* @retval Test result (TRUE or FALSE).
*/
#define IS_UART_BAUDRATE(BAUDRATE) ((BAUDRATE) < 9000001)
/** @brief Check UART assertion time
* @param TIME: 5-bit value assertion time
* @retval Test result (TRUE or FALSE).
*/
#define IS_UART_ASSERTIONTIME(TIME) ((TIME) <= 0x1F)
/** @brief Check UART deassertion time
* @param TIME: 5-bit value deassertion time
* @retval Test result (TRUE or FALSE).
*/
#define IS_UART_DEASSERTIONTIME(TIME) ((TIME) <= 0x1F)
/**
* @}
*/
/* Include UART HAL Extension module */
#include "stm32f0xx_hal_uart_ex.h"
/* Exported functions --------------------------------------------------------*/
/* Initialization and de-initialization functions ****************************/
HAL_StatusTypeDef UART_SetConfig(UART_HandleTypeDef *huart);
void UART_AdvFeatureConfig(UART_HandleTypeDef *huart);
HAL_StatusTypeDef UART_CheckIdleState(UART_HandleTypeDef *huart);
HAL_StatusTypeDef HAL_UART_Init(UART_HandleTypeDef *huart);
HAL_StatusTypeDef HAL_HalfDuplex_Init(UART_HandleTypeDef *huart);
HAL_StatusTypeDef HAL_MultiProcessor_Init(UART_HandleTypeDef *huart, uint8_t Address, uint32_t WakeUpMethod);
HAL_StatusTypeDef HAL_UART_DeInit (UART_HandleTypeDef *huart);
void HAL_UART_MspInit(UART_HandleTypeDef *huart);
void HAL_UART_MspDeInit(UART_HandleTypeDef *huart);
HAL_StatusTypeDef HAL_MultiProcessor_EnableMuteMode(UART_HandleTypeDef *huart);
HAL_StatusTypeDef HAL_MultiProcessor_DisableMuteMode(UART_HandleTypeDef *huart);
void HAL_MultiProcessor_EnterMuteMode(UART_HandleTypeDef *huart);
HAL_StatusTypeDef HAL_HalfDuplex_EnableTransmitter(UART_HandleTypeDef *huart);
HAL_StatusTypeDef HAL_HalfDuplex_EnableReceiver(UART_HandleTypeDef *huart);
HAL_StatusTypeDef UART_WaitOnFlagUntilTimeout(UART_HandleTypeDef *huart, uint32_t Flag, FlagStatus Status, uint32_t Timeout);
/* IO operation functions *****************************************************/
HAL_StatusTypeDef HAL_UART_Transmit(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size, uint32_t Timeout);
HAL_StatusTypeDef HAL_UART_Receive(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size, uint32_t Timeout);
HAL_StatusTypeDef HAL_UART_Transmit_IT(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size);
HAL_StatusTypeDef HAL_UART_Receive_IT(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size);
HAL_StatusTypeDef HAL_UART_Transmit_DMA(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size);
HAL_StatusTypeDef HAL_UART_Receive_DMA(UART_HandleTypeDef *huart, uint8_t *pData, uint16_t Size);
HAL_StatusTypeDef HAL_UART_DMAPause(UART_HandleTypeDef *huart);
HAL_StatusTypeDef HAL_UART_DMAResume(UART_HandleTypeDef *huart);
HAL_StatusTypeDef HAL_UART_DMAStop(UART_HandleTypeDef *huart);
void HAL_UART_TxHalfCpltCallback(UART_HandleTypeDef *huart);
void HAL_UART_TxCpltCallback(UART_HandleTypeDef *huart);
void HAL_UART_RxHalfCpltCallback(UART_HandleTypeDef *huart);
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart);
void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart);
HAL_StatusTypeDef UART_Transmit_IT(UART_HandleTypeDef *huart);
HAL_StatusTypeDef UART_Receive_IT(UART_HandleTypeDef *huart);
/* Peripheral Control functions ***********************************************/
/* Peripheral State and Error functions ***************************************/
HAL_UART_StateTypeDef HAL_UART_GetState(UART_HandleTypeDef *huart);
uint32_t HAL_UART_GetError(UART_HandleTypeDef *huart);
/**
* @}
*/
/**
* @}
*/
#ifdef __cplusplus
}
#endif
#endif /* __STM32F0xx_HAL_UART_H */
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
Raw
stm32f0xx_hal_uart_ex.c
/**
******************************************************************************
* @file stm32f0xx_hal_uart_ex.c
* @author MCD Application Team
* @version V1.0.1
* @date 18-June-2014
* @brief Extended UART HAL module driver.
*
* This file provides firmware functions to manage the following extended
* functionalities of the Universal Asynchronous Receiver Transmitter Peripheral (UART).
* + Initialization and de-initialization functions
* + Peripheral Control functions
*
*
@verbatim
===============================================================================
##### How to use this driver #####
===============================================================================
[..]
The UART HAL driver can be used as follows:
(#) Declare a UART_HandleTypeDef handle structure.
(#) For the UART RS485 Driver Enabled mode, initialize the UART registers
by calling the HAL_RS485Ex_Init() API.
@endverbatim
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32f0xx_hal.h"
/** @addtogroup STM32F0xx_HAL_Driver
* @{
*/
#ifdef HAL_UART_MODULE_ENABLED
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
#if !defined(STM32F030x6) && !defined(STM32F030x8)
static void UART_Wakeup_AddressConfig(UART_HandleTypeDef *huart, UART_WakeUpTypeDef WakeUpSelection);
#endif /* !defined(STM32F030x6) && !defined(STM32F030x8) */
/* Private functions ---------------------------------------------------------*/
/** @addtogroup UART
* @brief UART HAL module driver
* @{
*/
/** @addtogroup UART_Private_Functions
* @{
*/
/** @defgroup UART_Group4 Extended IO operation function
* @brief UART Interrupt handling function
*
@verbatim
===============================================================================
##### I/O operation function #####
===============================================================================
This subsection provides functions allowing to manage the UART interrupts
and to handle Wake up interrupt call-back.
(#) Non-Blocking mode API with Interrupt is :
(+) HAL_UART_IRQHandler()
(#) Callback provided in No_Blocking mode:
(+) HAL_UART_WakeupCallback()
@endverbatim
* @{
*/
/**
* @brief This function handles UART interrupt request.
* @param huart: uart handle
* @retval None
*/
void HAL_UART_IRQHandler(UART_HandleTypeDef *huart)
{
/* UART parity error interrupt occurred -------------------------------------*/
if((__HAL_UART_GET_IT(huart, UART_IT_PE) != RESET) && (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_PE) != RESET))
{
__HAL_UART_CLEAR_IT(huart, UART_CLEAR_PEF);
huart->ErrorCode |= HAL_UART_ERROR_PE;
/* Set the UART state ready to be able to start again the process */
huart->State = HAL_UART_STATE_READY;
}
/* UART frame error interrupt occured --------------------------------------*/
if((__HAL_UART_GET_IT(huart, UART_IT_FE) != RESET) && (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_ERR) != RESET))
{
__HAL_UART_CLEAR_IT(huart, UART_CLEAR_FEF);
huart->ErrorCode |= HAL_UART_ERROR_FE;
/* Set the UART state ready to be able to start again the process */
huart->State = HAL_UART_STATE_READY;
}
/* UART noise error interrupt occured --------------------------------------*/
if((__HAL_UART_GET_IT(huart, UART_IT_NE) != RESET) && (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_ERR) != RESET))
{
__HAL_UART_CLEAR_IT(huart, UART_CLEAR_NEF);
huart->ErrorCode |= HAL_UART_ERROR_NE;
/* Set the UART state ready to be able to start again the process */
huart->State = HAL_UART_STATE_READY;
}
/* UART Over-Run interrupt occured -----------------------------------------*/
if((__HAL_UART_GET_IT(huart, UART_IT_ORE) != RESET) && (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_ERR) != RESET))
{
__HAL_UART_CLEAR_IT(huart, UART_CLEAR_OREF);
huart->ErrorCode |= HAL_UART_ERROR_ORE;
/* Set the UART state ready to be able to start again the process */
huart->State = HAL_UART_STATE_READY;
}
/* Call UART Error Call back function if need be --------------------------*/
if(huart->ErrorCode != HAL_UART_ERROR_NONE)
{
HAL_UART_ErrorCallback(huart);
}
#if !defined(STM32F030x6) && !defined(STM32F030x8)
/* UART wakeup from Stop mode interrupt occurred -------------------------------------*/
if((__HAL_UART_GET_IT(huart, UART_IT_WUF) != RESET) && (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_WUF) != RESET))
{
__HAL_UART_CLEAR_IT(huart, UART_CLEAR_WUF);
/* Set the UART state ready to be able to start again the process */
huart->State = HAL_UART_STATE_READY;
HAL_UART_WakeupCallback(huart);
}
#endif /* !defined(STM32F030x6) && !defined(STM32F030x8) */
/* UART in mode Receiver ---------------------------------------------------*/
if((__HAL_UART_GET_IT(huart, UART_IT_RXNE) != RESET) && (__HAL_UART_GET_IT_SOURCE(huart, UART_IT_RXNE) != RESET))
{
UART_Receive_IT(huart);
/* Clear RXNE interrupt flag */
__HAL_UART_SEND_REQ(huart, UART_RXDATA_FLUSH_REQUEST);
}
/* UART in mode Transmitter ------------------------------------------------*/
if((__HAL_UART_GET_IT(huart, UART_IT_TXE) != RESET) &&(__HAL_UART_GET_IT_SOURCE(huart, UART_IT_TXE) != RESET))
{
UART_Transmit_IT(huart);
}
}
#if !defined(STM32F030x6) && !defined(STM32F030x8)
/**
* @brief UART wakeup from Stop mode callback
* @param huart: uart handle
* @retval None
*/
__weak void HAL_UART_WakeupCallback(UART_HandleTypeDef *huart)
{
/* NOTE : This function should not be modified, when the callback is needed,
the HAL_UART_WakeupCallback can be implemented in the user file
*/
}
#endif /*!defined(STM32F030x6) && !defined(STM32F030x8)*/
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/** @defgroup UARTEx
* @brief UART Extended HAL module driver
* @{
*/
/** @defgroup UARTEx_Private_Functions
* @{
*/
/** @defgroup UARTEx_Group1 Extended Initialization/de-initialization functions
* @brief Extended Initialization and Configuration Functions
*
@verbatim
===============================================================================
##### Initialization and Configuration functions #####
===============================================================================
[..]
This subsection provides a set of functions allowing to initialize the USARTx or the UARTy
in asynchronous mode.
(+) For the asynchronous mode only these parameters can be configured:
(++) Baud Rate
(++) Word Length
(++) Stop Bit
(++) Parity: If the parity is enabled, then the MSB bit of the data written
in the data register is transmitted but is changed by the parity bit.
Depending on the frame length defined by the M bit (8-bits or 9-bits),
the possible UART frame formats are as listed in the following table:
|-----------|-----------|---------------------------------------|
| M1M0 bits | PCE bit | UART frame |
|-----------------------|---------------------------------------|
| 00 | 0 | | SB | 8-bit data | STB | |
|-----------|-----------|---------------------------------------|
| 00 | 1 | | SB | 7-bit data | PB | STB | |
|-----------|-----------|---------------------------------------|
| 01 | 0 | | SB | 9-bit data | STB | |
|-----------|-----------|---------------------------------------|
| 01 | 1 | | SB | 8-bit data | PB | STB | |
+---------------------------------------------------------------+
| 10 | 0 | | SB | 7-bit data | STB | |
|-----------|-----------|---------------------------------------|
| 10 | 1 | | SB | 6-bit data | PB | STB | |
+---------------------------------------------------------------+
(++) Hardware flow control
(++) Receiver/transmitter modes
(++) Over Sampling Method
(++) One-Bit Sampling Method
(+) For the asynchronous mode, the following advanced features can be configured as well:
(++) TX and/or RX pin level inversion
(++) data logical level inversion
(++) RX and TX pins swap
(++) RX overrun detection disabling
(++) DMA disabling on RX error
(++) MSB first on communication line
(++) auto Baud rate detection
[..]
The HAL_LIN_Init() and HAL_RS485Ex_Init() APIs follows respectively the LIN and
the UART RS485 mode configuration procedures (details for the procedures are
available in reference manual).
@endverbatim
* @{
*/
/**
* @brief Initializes the RS485 Driver enable feature according to the specified
* parameters in the UART_InitTypeDef and creates the associated handle .
* @param huart: uart handle
* @param UART_DEPolarity: select the driver enable polarity
* This parameter can be one of the following values:
* @arg UART_DE_POLARITY_HIGH: DE signal is active high
* @arg UART_DE_POLARITY_LOW: DE signal is active low
* @param UART_DEAssertionTime: Driver Enable assertion time
* 5-bit value defining the time between the activation of the DE (Driver Enable)
* signal and the beginning of the start bit. It is expressed in sample time
* units (1/8 or 1/16 bit time, depending on the oversampling rate)
* @param UART_DEDeassertionTime: Driver Enable deassertion time
* 5-bit value defining the time between the end of the last stop bit, in a
* transmitted message, and the de-activation of the DE (Driver Enable) signal.
* It is expressed in sample time units (1/8 or 1/16 bit time, depending on the
* oversampling rate).
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RS485Ex_Init(UART_HandleTypeDef *huart, uint32_t UART_DEPolarity, uint32_t UART_DEAssertionTime, uint32_t UART_DEDeassertionTime)
{
uint32_t temp = 0x0;
/* Check the UART handle allocation */
if(huart == NULL)
{
return HAL_ERROR;
}
/* Check the Driver Enable UART instance */
assert_param(IS_UART_DRIVER_ENABLE_INSTANCE(huart->Instance));
/* Check the Driver Enable polarity */
assert_param(IS_UART_DE_POLARITY(UART_DEPolarity));
/* Check the Driver Enable assertion time */
assert_param(IS_UART_ASSERTIONTIME(UART_DEAssertionTime));
/* Check the Driver Enable deassertion time */
assert_param(IS_UART_DEASSERTIONTIME(UART_DEDeassertionTime));
if(huart->State == HAL_UART_STATE_RESET)
{
/* Init the low level hardware : GPIO, CLOCK */
HAL_UART_MspInit(huart);
}
huart->State = HAL_UART_STATE_BUSY;
/* Disable the Peripheral */
__HAL_UART_DISABLE(huart);
/* Set the UART Communication parameters */
if (UART_SetConfig(huart) == HAL_ERROR)
{
return HAL_ERROR;
}
if (huart->AdvancedInit.AdvFeatureInit != UART_ADVFEATURE_NO_INIT)
{
UART_AdvFeatureConfig(huart);
}
/* Enable the Driver Enable mode by setting the DEM bit in the CR3 register */
huart->Instance->CR3 |= USART_CR3_DEM;
/* Set the Driver Enable polarity */
MODIFY_REG(huart->Instance->CR3, USART_CR3_DEP, UART_DEPolarity);
/* Set the Driver Enable assertion and deassertion times */
temp = (UART_DEAssertionTime << UART_CR1_DEAT_ADDRESS_LSB_POS);
temp |= (UART_DEDeassertionTime << UART_CR1_DEDT_ADDRESS_LSB_POS);
MODIFY_REG(huart->Instance->CR1, (USART_CR1_DEDT|USART_CR1_DEAT), temp);
/* Enable the Peripheral */
__HAL_UART_ENABLE(huart);
/* TEACK and/or REACK to check before moving huart->State to Ready */
return (UART_CheckIdleState(huart));
}
#if !defined(STM32F030x6) && !defined(STM32F030x8)
/**
* @brief Initializes the LIN mode according to the specified
* parameters in the UART_InitTypeDef and creates the associated handle .
* @param huart: uart handle
* @param BreakDetectLength: specifies the LIN break detection length.
* This parameter can be one of the following values:
* @arg UART_LINBREAKDETECTLENGTH_10B: 10-bit break detection
* @arg UART_LINBREAKDETECTLENGTH_11B: 11-bit break detection
* @retval HAL status
*/
HAL_StatusTypeDef HAL_LIN_Init(UART_HandleTypeDef *huart, uint32_t BreakDetectLength)
{
/* Check the UART handle allocation */
if(huart == NULL)
{
return HAL_ERROR;
}
/* Check the parameters */
assert_param(IS_UART_LIN_INSTANCE(huart->Instance));
assert_param(IS_UART_LIN_BREAK_DETECT_LENGTH(BreakDetectLength));
/* LIN mode limited to 16-bit oversampling only */
if(huart->Init.OverSampling == UART_OVERSAMPLING_8)
{
return HAL_ERROR;
}
/* Init the low level hardware : GPIO, CLOCK, CORTEX */
HAL_UART_MspInit(huart);
/* Disable the Peripheral */
__HAL_UART_DISABLE(huart);
/* Set the UART Communication parameters */
if (UART_SetConfig(huart) == HAL_ERROR)
{
return HAL_ERROR;
}
if (huart->AdvancedInit.AdvFeatureInit != UART_ADVFEATURE_NO_INIT)
{
UART_AdvFeatureConfig(huart);
}
/* In LIN mode, the following bits must be kept cleared:
- LINEN and CLKEN bits in the USART_CR2 register,
- SCEN and IREN bits in the USART_CR3 register.*/
huart->Instance->CR2 &= ~(USART_CR2_CLKEN);
huart->Instance->CR3 &= ~(USART_CR3_HDSEL | USART_CR3_IREN | USART_CR3_SCEN);
/* Enable the LIN mode by setting the LINEN bit in the CR2 register */
huart->Instance->CR2 |= USART_CR2_LINEN;
/* Set the USART LIN Break detection length. */
MODIFY_REG(huart->Instance->CR2, USART_CR2_LBDL, BreakDetectLength);
/* Enable the Peripheral */
__HAL_UART_ENABLE(huart);
/* TEACK and/or REACK to check before moving huart->State to Ready */
return (UART_CheckIdleState(huart));
}
#endif /* !defined(STM32F030x6) && !defined(STM32F030x8) */
/**
* @}
*/
/** @defgroup UARTEx_Group3 Extended Peripheral Control functions
* @brief Extended Peripheral Control functions
*
@verbatim
===============================================================================
##### Peripheral Control function #####
===============================================================================
[..]
This subsection provides extended functions allowing to control the UART.
(+) HAL_MultiProcessorEx_AddressLength_Set() API optionally sets the UART node address
detection length to more than 4 bits for multiprocessor address mark wake up.
(+) HAL_UART_EnableStopMode() API allows the UART to wake up the MCU from Stop mode as
long as UART clock is HSI or LSE
(+) HAL_UART_DisableStopMode() API disables the above feature
(+) HAL_MultiProcessorEx_AddressLength_Set() API configures the address length when the
wake-up event is the address match feature
(+) UART_Wakeup_AddressConfig() API sets the reference address used when address
match feature is carried out
@endverbatim
* @{
*/
#if !defined(STM32F030x6) && !defined(STM32F030x8)
/**
* @brief Set Wakeup from Stop mode interrupt flag selection
* @param huart: uart handle,
* @param WakeUpSelection: address match, Start Bit detection or RXNE bit status.
* This parameter can be one of the following values:
* @arg UART_WAKEUP_ON_ADDRESS
* @arg UART_WAKEUP_ON_STARTBIT
* @arg UART_WAKEUP_ON_READDATA_NONEMPTY
* @retval HAL status
*/
HAL_StatusTypeDef HAL_UARTEx_StopModeWakeUpSourceConfig(UART_HandleTypeDef *huart, UART_WakeUpTypeDef WakeUpSelection)
{
/* Check parameters */
assert_param(IS_UART_WAKEUP_INSTANCE(huart->Instance));
assert_param(IS_UART_WAKEUP_SELECTION(WakeUpSelection.WakeUpEvent));
/* Process Locked */
__HAL_LOCK(huart);
huart->State = HAL_UART_STATE_BUSY;
/* Disable the Peripheral */