Microcontroller Projects

led-bar-with-stm32-microcontroller.c

/********************************************************************************
Property off: www.microcontroller-project.com
Written by  : Usman Ali Butt
Date        : 21-June-2018
******************************************************************************/
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "stm32f1xx_hal.h"

void SystemClock_Config(void);
void Error_Handler(void);
static void MX_GPIO_Init(void);


int main(void)
{

  /* MCU Configuration----------------------------------------------------------*/
  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();
  /* Configure the system clock */
  SystemClock_Config();
  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
		GPIOA->ODR = 0x0001;
		HAL_Delay(250);     //Quater second delay
		GPIOA->ODR = 0x0003;
		HAL_Delay(250);     //Quater second delay
		GPIOA->ODR = 0x0007;
		HAL_Delay(250);     //Quater second delay
		GPIOA->ODR = 0x000F;
		HAL_Delay(250);     //Quater second delay
		GPIOA->ODR = 0x001F;
		HAL_Delay(250);     //Quater second delay
		GPIOA->ODR = 0x003F;
		HAL_Delay(250);     //Quater second delay
		GPIOA->ODR = 0x007F;
		HAL_Delay(250);     //Quater second delay
		GPIOA->ODR = 0x00FF;
		
		HAL_Delay(1000);     //1 second delay
		GPIOA->ODR = 0x0000; //Reset all Leds
  }
  /* USER CODE END 3 */
}

void SystemClock_Config(void)
{

  RCC_OscInitTypeDef RCC_OscInitStruct;
  RCC_ClkInitTypeDef RCC_ClkInitStruct;

    /**Initializes the CPU, AHB and APB busses clocks 
    */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.HSICalibrationValue = 16;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }

    /**Initializes the CPU, AHB and APB busses clocks 
    */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
  {
    Error_Handler();
  }
  HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);

    /**Configure the Systick 
    */
  HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);

  /* SysTick_IRQn interrupt configuration */
  HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
}

static void MX_GPIO_Init(void)
{
  GPIO_InitTypeDef GPIO_InitStruct;

  /* GPIO Ports Clock Enable */
  __HAL_RCC_GPIOA_CLK_ENABLE();

  /*Configure GPIO pin Output Level */
  HAL_GPIO_WritePin(GPIOA, PA0_Pin|PA1_Pin|PA2_Pin|PA3_Pin 
                          |PA4_Pin|PA5_Pin|PA6_Pin|PA7_Pin, GPIO_PIN_RESET);

  /*Configure GPIO pins : PA0_Pin PA1_Pin PA2_Pin PA3_Pin 
                           PA4_Pin PA5_Pin PA6_Pin PA7_Pin */
  GPIO_InitStruct.Pin = PA0_Pin|PA1_Pin|PA2_Pin|PA3_Pin 
                          |PA4_Pin|PA5_Pin|PA6_Pin|PA7_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

}

void Error_Handler(void)
{
  while(1) 
  {
  }
}

#ifdef USE_FULL_ASSERT

void assert_failed(uint8_t* file, uint32_t line)
{
}

#endif