Serial debugging for TM4C123gh6pm

main.c

#include <stdint.h>
#include <stdbool.h>
#include <string.h>
#include "driverlib/uart.h"
#include "driverlib/gpio.h"
#include "inc/hw_ints.h"
#include "inc/hw_memmap.h"
#include "inc/hw_types.h"
#include "inc/hw_gpio.h"
#include "driverlib/interrupt.h"
#include "LCDDriver.h"


char Character[6] = {0};//定义 Character 为全局变量
void UART0_Int_Handler(void)

{
	//中断标志的读取、处理和清除
	unsigned long ulStatus;
	IntMasterDisable();//使能全局中断
	ulStatus = UARTIntStatus(UART0_BASE, true);
	UARTIntClear(UART0_BASE, ulStatus);

	//根据中断标志处理相关事件
	if(ulStatus & UART_INT_RX)
	{
		int k,i;
		for(k = 0; k < 6; k++)
		{
			Character[k] = UARTCharGet(UART0_BASE);
		}
		LCD_Draw_String(Character, ENUM_LINE_EIGHT, 3, LCD_DRAW_NORMAL);
		for(i = 12;i < 18;i++)
		{
		    LCD_Draw_Char_8x8('#', ENUM_LINE_EIGHT, i, LCD_DRAW_NORMAL);
		}
	}
	IntMasterEnable();//使能全局中断
}

void Int_GPIO_C_Handler(void)
{
	IntMasterDisable();//使能全局中断
	// 读取中断状态
	unsigned long ulStatus;
	ulStatus = GPIOIntStatus(GPIO_PORTC_BASE, true);
	// 清除中断状态
	GPIOIntClear(GPIO_PORTC_BASE, ulStatus);
	// 如果KEY的中断状态有效
	if (ulStatus & GPIO_PIN_7)													//PC7  s1
	{
		// 延时约10ms，消除按键抖动
		SysCtlDelay(20 * (SysCtlClockGet() / 3000));
		// 等待KEY抬起
		while (GPIOPinRead(GPIO_PORTC_BASE, GPIO_PIN_7) == 0x00);
		// 延时约10ms，消除松键抖动
		SysCtlDelay(20 * (SysCtlClockGet()  / 3000));

		int j;
		for(j=3;j<21;j++)
		{
		    LCD_Draw_Char_8x8('-', ENUM_LINE_EIGHT, j, LCD_DRAW_NORMAL);
		}

	}
	IntMasterEnable();//使能全局中断
}


//按键 PD6 中断处理
void Int_GPIO_D_Handler(void)
{
	IntMasterDisable();//使能全局中断
	unsigned char newchar = '$';
	unsigned long ulStatus;
	// 读取中断状态
	ulStatus = GPIOIntStatus(GPIO_PORTD_BASE, true);
	// 清除中断状态
	GPIOIntClear(GPIO_PORTD_BASE, ulStatus);
	// 如果KEY的中断状态有效
	if (ulStatus & GPIO_PIN_6)												//PD6  s2
	{
		// 延时约10ms，消除按键抖动
		SysCtlDelay(20 * (SysCtlClockGet() / 3000));
		// 等待KEY抬起
		while (GPIOPinRead(GPIO_PORTD_BASE, GPIO_PIN_6) == 0x00);
		// 延时约10ms，消除松键抖动
		SysCtlDelay(20 * (SysCtlClockGet()  / 3000));

		//发送新字符
		UARTCharPut(UART0_BASE, newchar);
	}
	IntMasterEnable();//使能全局中断

	if(ulStatus & GPIO_PIN_7)												//PD7  s3
	{
		// 延时约10ms，消除按键抖动
		SysCtlDelay(20 * (SysCtlClockGet() / 3000));
		// 等待KEY抬起
		while (GPIOPinRead(GPIO_PORTD_BASE, GPIO_PIN_7) == 0x00);
		// 延时约10ms，消除松键抖动
		SysCtlDelay(20 * (SysCtlClockGet()  / 3000));
		//显示一个字符*
		UARTCharPut(UART0_BASE, '*');
		//改变波特率
		UARTConfigSetExpClk(UART0_BASE, SysCtlClockGet(), 115200,
				UART_CONFIG_WLEN_8 | UART_CONFIG_PAR_NONE | UART_CONFIG_STOP_ONE);

	}
	IntMasterEnable();//使能全局中断
}

//初始化LCD
void Init_LCD(void)
{
	LCD_Enable();
	LCD_Init();
	LCD_ScreenClr();
}

//初始化 UART 模块
void Init_UART(void)
{
	//初始化和配置 UART 模块,PA0/PA1
	SysCtlPeripheralEnable(SYSCTL_PERIPH_UART0);
	SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOA);
	GPIOPinTypeUART(GPIO_PORTA_BASE, GPIO_PIN_0 | GPIO_PIN_1);
	UARTConfigSetExpClk(UART0_BASE, SysCtlClockGet(), 9600, UART_CONFIG_WLEN_8 | UART_CONFIG_PAR_NONE | UART_CONFIG_STOP_ONE);

	//UART 中断配置
	UARTFIFOLevelSet(UART0_BASE, UART_FIFO_TX7_8, UART_FIFO_RX1_8);
	UARTIntRegister(UART0_BASE, UART0_Int_Handler);

	UARTIntEnable(UART0_BASE, UART_INT_RX);
	//使UART传输数据使能
	UARTIntEnable(UART0_BASE, UART_INT_TX);
}

//初始化按键 PC7和PD6
void Init_Key(void) //同时初始化PC7和PD7|PD7
{
	//PC|PD按键解锁等等
	HWREG(GPIO_PORTC_BASE | GPIO_PORTD_BASE + GPIO_O_LOCK)  |= GPIO_LOCK_KEY;
	HWREG(GPIO_PORTC_BASE | GPIO_PORTD_BASE + GPIO_O_CR)   |= (1<<7);
	HWREG(GPIO_PORTC_BASE | GPIO_PORTD_BASE + GPIO_O_DEN)  &=(~(1<<7));
	HWREG(GPIO_PORTC_BASE | GPIO_PORTD_BASE + GPIO_O_PDR)  &= (~(1<<7));
	HWREG(GPIO_PORTC_BASE | GPIO_PORTD_BASE + GPIO_O_PUR)  &= (~(1<<7));
	HWREG(GPIO_PORTC_BASE | GPIO_PORTD_BASE + GPIO_O_AFSEL) &=(~(1<<7));



	//PC7 和PD6|PD7按键配置
	SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOC | SYSCTL_PERIPH_GPIOD);

	GPIODirModeSet(GPIO_PORTC_BASE , GPIO_PIN_7, GPIO_DIR_MODE_IN);
	GPIOPadConfigSet(GPIO_PORTC_BASE , GPIO_PIN_7, GPIO_STRENGTH_2MA, GPIO_PIN_TYPE_STD_WPU);

	GPIODirModeSet( GPIO_PORTD_BASE, GPIO_PIN_6|GPIO_PIN_7, GPIO_DIR_MODE_IN);
	GPIOPadConfigSet( GPIO_PORTD_BASE, GPIO_PIN_6|GPIO_PIN_7, GPIO_STRENGTH_2MA, GPIO_PIN_TYPE_STD_WPU);

	//PC7和PD6|PD7中断配置
	GPIOIntTypeSet(GPIO_PORTC_BASE , GPIO_PIN_7, GPIO_LOW_LEVEL);
	GPIOIntTypeSet( GPIO_PORTD_BASE, GPIO_PIN_6|GPIO_PIN_7, GPIO_LOW_LEVEL);
	GPIOIntRegister(GPIO_PORTC_BASE, Int_GPIO_C_Handler);
	GPIOIntRegister(GPIO_PORTD_BASE, Int_GPIO_D_Handler);

	GPIOIntEnable(GPIO_PORTC_BASE , GPIO_PIN_7);
	GPIOIntClear( GPIO_PORTC_BASE, GPIO_PIN_7);

	GPIOIntEnable( GPIO_PORTD_BASE, GPIO_PIN_6|GPIO_PIN_7);
	GPIOIntClear( GPIO_PORTD_BASE, GPIO_PIN_6|GPIO_PIN_7);

	IntEnable(INT_UART0_TM4C123);
	IntMasterEnable();//使能全局中断
}

int main(void)
{

	SysCtlClockSet(SYSCTL_SYSDIV_1 | SYSCTL_USE_PLL | SYSCTL_OSC_MAIN | SYSCTL_XTAL_16MHZ);

	Init_LCD();//初始化 LCD
	Init_UART();//初始化 UART
	Init_Key();//初始化按键 PC7和PD6|PD7

	//屏幕上固定显示通信参数
	LCD_Draw_String("UART0_Test...     ", ENUM_LINE_ONE, 0, LCD_DRAW_NORMAL);
	LCD_Draw_String("BaudRate:     9600", ENUM_LINE_THREE, 0, LCD_DRAW_NORMAL);   //波特率
	LCD_Draw_String("BaudRate*:  115200", ENUM_LINE_FOUR, 0, LCD_DRAW_NORMAL);   //波特率
	LCD_Draw_String("WordLength:      8", ENUM_LINE_FIVE, 0, LCD_DRAW_NORMAL);
	LCD_Draw_String("Parity:       None", ENUM_LINE_SIX, 0, LCD_DRAW_NORMAL);
	LCD_Draw_String("Stop:            1", ENUM_LINE_SEVEN, 0, LCD_DRAW_NORMAL);
	LCD_Draw_String("Re:               ", ENUM_LINE_EIGHT, 0, LCD_DRAW_NORMAL);

	while(1)
	{
		SysCtlDelay(SysCtlClockGet() / 12);
	}
}

tm4c123gh6pm_startup_ccs.c

//*****************************************************************************
//
// Startup code for use with TI's Code Composer Studio.
//
// Copyright (c) 2011-2013 Texas Instruments Incorporated.  All rights reserved.
// Software License Agreement
// 
// Software License Agreement
//
// Texas Instruments (TI) is supplying this software for use solely and
// exclusively on TI's microcontroller products. The software is owned by
// TI and/or its suppliers, and is protected under applicable copyright
// laws. You may not combine this software with "viral" open-source
// software in order to form a larger program.
//
// THIS SOFTWARE IS PROVIDED "AS IS" AND WITH ALL FAULTS.
// NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT
// NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. TI SHALL NOT, UNDER ANY
// CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
// DAMAGES, FOR ANY REASON WHATSOEVER.
//
//*****************************************************************************

#include <stdint.h>

//*****************************************************************************
//
// Forward declaration of the default fault handlers.
//
//*****************************************************************************
void ResetISR(void);
static void NmiSR(void);
static void FaultISR(void);
static void IntDefaultHandler(void);

void UART0_Int_Handler(void);
void Int_GPIO_C_Handler(void);
void Int_GPIO_D_Handler(void);
//*****************************************************************************
//
// External declaration for the reset handler that is to be called when the
// processor is started
//
//*****************************************************************************
extern void _c_int00(void);

//*****************************************************************************
//
// Linker variable that marks the top of the stack.
//
//*****************************************************************************
extern uint32_t __STACK_TOP;

//*****************************************************************************
//
// External declarations for the interrupt handlers used by the application.
//
//*****************************************************************************
// To be added by user

//*****************************************************************************
//
// The vector table.  Note that the proper constructs must be placed on this to
// ensure that it ends up at physical address 0x0000.0000 or at the start of
// the program if located at a start address other than 0.
//
//*****************************************************************************
#pragma DATA_SECTION(g_pfnVectors, ".intvecs")
void (* const g_pfnVectors[])(void) =
{
    (void (*)(void))((uint32_t)&__STACK_TOP),
                                            // The initial stack pointer
    ResetISR,                               // The reset handler
    NmiSR,                                  // The NMI handler
    FaultISR,                               // The hard fault handler
    IntDefaultHandler,                      // The MPU fault handler
    IntDefaultHandler,                      // The bus fault handler
    IntDefaultHandler,                      // The usage fault handler
    0,                                      // Reserved
    0,                                      // Reserved
    0,                                      // Reserved
    0,                                      // Reserved
    IntDefaultHandler,                      // SVCall handler
    IntDefaultHandler,                      // Debug monitor handler
    0,                                      // Reserved
    IntDefaultHandler,                      // The PendSV handler
    IntDefaultHandler,                      // The SysTick handler
    IntDefaultHandler,                      // GPIO Port A
    IntDefaultHandler,                      // GPIO Port B
    Int_GPIO_C_Handler, 					// GPIO Port C
    Int_GPIO_D_Handler,                     // GPIO Port D
    IntDefaultHandler,                      // GPIO Port E
    UART0_Int_Handler,                      // UART0 Rx and Tx
    IntDefaultHandler,                      // UART1 Rx and Tx
    IntDefaultHandler,                      // SSI0 Rx and Tx
    IntDefaultHandler,                      // I2C0 Master and Slave
    IntDefaultHandler,                      // PWM Fault
    IntDefaultHandler,                      // PWM Generator 0
    IntDefaultHandler,                      // PWM Generator 1
    IntDefaultHandler,                      // PWM Generator 2
    IntDefaultHandler,                      // Quadrature Encoder 0
    IntDefaultHandler,                      // ADC Sequence 0
    IntDefaultHandler,                      // ADC Sequence 1
    IntDefaultHandler,                      // ADC Sequence 2
    IntDefaultHandler,                      // ADC Sequence 3
    IntDefaultHandler,                      // Watchdog timer
    IntDefaultHandler,                      // Timer 0 subtimer A
    IntDefaultHandler,                      // Timer 0 subtimer B
    IntDefaultHandler,                      // Timer 1 subtimer A
    IntDefaultHandler,                      // Timer 1 subtimer B
    IntDefaultHandler,                      // Timer 2 subtimer A
    IntDefaultHandler,                      // Timer 2 subtimer B
    IntDefaultHandler,                      // Analog Comparator 0
    IntDefaultHandler,                      // Analog Comparator 1
    IntDefaultHandler,                      // Analog Comparator 2
    IntDefaultHandler,                      // System Control (PLL, OSC, BO)
    IntDefaultHandler,                      // FLASH Control
    IntDefaultHandler,                      // GPIO Port F
    IntDefaultHandler,                      // GPIO Port G
    IntDefaultHandler,                      // GPIO Port H
    IntDefaultHandler,                      // UART2 Rx and Tx
    IntDefaultHandler,                      // SSI1 Rx and Tx
    IntDefaultHandler,                      // Timer 3 subtimer A
    IntDefaultHandler,                      // Timer 3 subtimer B
    IntDefaultHandler,                      // I2C1 Master and Slave
    IntDefaultHandler,                      // Quadrature Encoder 1
    IntDefaultHandler,                      // CAN0
    IntDefaultHandler,                      // CAN1
    IntDefaultHandler,                      // CAN2
    0,                                      // Reserved
    IntDefaultHandler,                      // Hibernate
    IntDefaultHandler,                      // USB0
    IntDefaultHandler,                      // PWM Generator 3
    IntDefaultHandler,                      // uDMA Software Transfer
    IntDefaultHandler,                      // uDMA Error
    IntDefaultHandler,                      // ADC1 Sequence 0
    IntDefaultHandler,                      // ADC1 Sequence 1
    IntDefaultHandler,                      // ADC1 Sequence 2
    IntDefaultHandler,                      // ADC1 Sequence 3
    0,                                      // Reserved
    0,                                      // Reserved
    IntDefaultHandler,                      // GPIO Port J
    IntDefaultHandler,                      // GPIO Port K
    IntDefaultHandler,                      // GPIO Port L
    IntDefaultHandler,                      // SSI2 Rx and Tx
    IntDefaultHandler,                      // SSI3 Rx and Tx
    IntDefaultHandler,                      // UART3 Rx and Tx
    IntDefaultHandler,                      // UART4 Rx and Tx
    IntDefaultHandler,                      // UART5 Rx and Tx
    IntDefaultHandler,                      // UART6 Rx and Tx
    IntDefaultHandler,                      // UART7 Rx and Tx
    0,                                      // Reserved
    0,                                      // Reserved
    0,                                      // Reserved
    0,                                      // Reserved
    IntDefaultHandler,                      // I2C2 Master and Slave
    IntDefaultHandler,                      // I2C3 Master and Slave
    IntDefaultHandler,                      // Timer 4 subtimer A
    IntDefaultHandler,                      // Timer 4 subtimer B
    0,                                      // Reserved
    0,                                      // Reserved
    0,                                      // Reserved
    0,                                      // Reserved
    0,                                      // Reserved
    0,                                      // Reserved
    0,                                      // Reserved
    0,                                      // Reserved
    0,                                      // Reserved
    0,                                      // Reserved
    0,                                      // Reserved
    0,                                      // Reserved
    0,                                      // Reserved
    0,                                      // Reserved
    0,                                      // Reserved
    0,                                      // Reserved
    0,                                      // Reserved
    0,                                      // Reserved
    0,                                      // Reserved
    0,                                      // Reserved
    IntDefaultHandler,                      // Timer 5 subtimer A
    IntDefaultHandler,                      // Timer 5 subtimer B
    IntDefaultHandler,                      // Wide Timer 0 subtimer A
    IntDefaultHandler,                      // Wide Timer 0 subtimer B
    IntDefaultHandler,                      // Wide Timer 1 subtimer A
    IntDefaultHandler,                      // Wide Timer 1 subtimer B
    IntDefaultHandler,                      // Wide Timer 2 subtimer A
    IntDefaultHandler,                      // Wide Timer 2 subtimer B
    IntDefaultHandler,                      // Wide Timer 3 subtimer A
    IntDefaultHandler,                      // Wide Timer 3 subtimer B
    IntDefaultHandler,                      // Wide Timer 4 subtimer A
    IntDefaultHandler,                      // Wide Timer 4 subtimer B
    IntDefaultHandler,                      // Wide Timer 5 subtimer A
    IntDefaultHandler,                      // Wide Timer 5 subtimer B
    IntDefaultHandler,                      // FPU
    0,                                      // Reserved
    0,                                      // Reserved
    IntDefaultHandler,                      // I2C4 Master and Slave
    IntDefaultHandler,                      // I2C5 Master and Slave
    IntDefaultHandler,                      // GPIO Port M
    IntDefaultHandler,                      // GPIO Port N
    IntDefaultHandler,                      // Quadrature Encoder 2
    0,                                      // Reserved
    0,                                      // Reserved
    IntDefaultHandler,                      // GPIO Port P (Summary or P0)
    IntDefaultHandler,                      // GPIO Port P1
    IntDefaultHandler,                      // GPIO Port P2
    IntDefaultHandler,                      // GPIO Port P3
    IntDefaultHandler,                      // GPIO Port P4
    IntDefaultHandler,                      // GPIO Port P5
    IntDefaultHandler,                      // GPIO Port P6
    IntDefaultHandler,                      // GPIO Port P7
    IntDefaultHandler,                      // GPIO Port Q (Summary or Q0)
    IntDefaultHandler,                      // GPIO Port Q1
    IntDefaultHandler,                      // GPIO Port Q2
    IntDefaultHandler,                      // GPIO Port Q3
    IntDefaultHandler,                      // GPIO Port Q4
    IntDefaultHandler,                      // GPIO Port Q5
    IntDefaultHandler,                      // GPIO Port Q6
    IntDefaultHandler,                      // GPIO Port Q7
    IntDefaultHandler,                      // GPIO Port R
    IntDefaultHandler,                      // GPIO Port S
    IntDefaultHandler,                      // PWM 1 Generator 0
    IntDefaultHandler,                      // PWM 1 Generator 1
    IntDefaultHandler,                      // PWM 1 Generator 2
    IntDefaultHandler,                      // PWM 1 Generator 3
    IntDefaultHandler                       // PWM 1 Fault
};

//*****************************************************************************
//
// This is the code that gets called when the processor first starts execution
// following a reset event.  Only the absolutely necessary set is performed,
// after which the application supplied entry() routine is called.  Any fancy
// actions (such as making decisions based on the reset cause register, and
// resetting the bits in that register) are left solely in the hands of the
// application.
//
//*****************************************************************************
void
ResetISR(void)
{
    //
    // Jump to the CCS C initialization routine.  This will enable the
    // floating-point unit as well, so that does not need to be done here.
    //
    __asm("    .global _c_int00\n"
          "    b.w     _c_int00");
}

//*****************************************************************************
//
// This is the code that gets called when the processor receives a NMI.  This
// simply enters an infinite loop, preserving the system state for examination
// by a debugger.
//
//*****************************************************************************
static void
NmiSR(void)
{
    //
    // Enter an infinite loop.
    //
    while(1)
    {
    }
}

//*****************************************************************************
//
// This is the code that gets called when the processor receives a fault
// interrupt.  This simply enters an infinite loop, preserving the system state
// for examination by a debugger.
//
//*****************************************************************************
static void
FaultISR(void)
{
    //
    // Enter an infinite loop.
    //
    while(1)
    {
    }
}

//*****************************************************************************
//
// This is the code that gets called when the processor receives an unexpected
// interrupt.  This simply enters an infinite loop, preserving the system state
// for examination by a debugger.
//
//*****************************************************************************
static void
IntDefaultHandler(void)
{
    //
    // Go into an infinite loop.
    //
    while(1)
    {
    }
}