/nucleo-f401RE/src/ch5/main-ex1.c

/**

 ******************************************************************************

 * File Name          : main.c

 * Description        : Main program body

 ******************************************************************************

 *

 * COPYRIGHT(c) 2015 Carmine Noviello

 *

 * 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 "stm32f4xx_hal.h"

#include "diag/Trace.h"



void SystemClock_Config(void);

static void MX_GPIO_Init(void);



int main(void)

{

	char msg[] = "Hello STM32 lovers!\n";



	HAL_Init();

	SystemClock_Config();

	MX_GPIO_Init();



	trace_printf(msg);



	while(1) {

		HAL_GPIO_TogglePin(GPIOA, GPIO_PIN_5);

		HAL_Delay(500);

	}

}



/** System Clock Configuration

 */

void SystemClock_Config(void)

{



	RCC_OscInitTypeDef RCC_OscInitStruct;

	RCC_ClkInitTypeDef RCC_ClkInitStruct;



	__PWR_CLK_ENABLE();



	__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);



	RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;

	RCC_OscInitStruct.HSIState = RCC_HSI_ON;

	RCC_OscInitStruct.HSICalibrationValue = 16;

	RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;

	RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;

	RCC_OscInitStruct.PLL.PLLM = 16;

	RCC_OscInitStruct.PLL.PLLN = 336;

	RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4;

	RCC_OscInitStruct.PLL.PLLQ = 7;

	HAL_RCC_OscConfig(&RCC_OscInitStruct);



	RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_SYSCLK|RCC_CLOCKTYPE_PCLK1;

	RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;

	RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;

	RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;

	RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

	HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2);



	HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);



	HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);



}



/** Configure pins as 

 * Analog

 * Input

 * Output

 * EVENT_OUT

 * EXTI

     PA2   ------> USART2_TX

     PA3   ------> USART2_RX

 */

void MX_GPIO_Init(void)

{



	GPIO_InitTypeDef GPIO_InitStruct;



	/* GPIO Ports Clock Enable */

	__GPIOC_CLK_ENABLE();

	__GPIOH_CLK_ENABLE();

	__GPIOA_CLK_ENABLE();

	__GPIOB_CLK_ENABLE();



	/*Configure GPIO pin : PC13 */

	GPIO_InitStruct.Pin = GPIO_PIN_13;

	GPIO_InitStruct.Mode = GPIO_MODE_EVT_RISING;

	GPIO_InitStruct.Pull = GPIO_NOPULL;

	HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);



	/*Configure GPIO pins : PA2 PA3 */

	GPIO_InitStruct.Pin = GPIO_PIN_2|GPIO_PIN_3;

	GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;

	GPIO_InitStruct.Pull = GPIO_NOPULL;

	GPIO_InitStruct.Speed = GPIO_SPEED_LOW;

	GPIO_InitStruct.Alternate = GPIO_AF7_USART2;

	HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);



	/*Configure GPIO pin : PA5 */

	GPIO_InitStruct.Pin = GPIO_PIN_5;

	GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;

	GPIO_InitStruct.Pull = GPIO_NOPULL;

	GPIO_InitStruct.Speed = GPIO_SPEED_LOW;

	HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);



}



/* USER CODE BEGIN 4 */



/* USER CODE END 4 */



#ifdef USE_FULL_ASSERT



/**

 * @brief Reports the name of the source file and the source line number

 * where the assert_param error has occurred.

 * @param file: pointer to the source file name

 * @param line: assert_param error line source number

 * @retval None

 */

void assert_failed(uint8_t* file, uint32_t line)

{

	/* USER CODE BEGIN 6 */

	/* User can add his own implementation to report the file name and line number,

    ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */

	/* USER CODE END 6 */



}



#endif



/**

 * @}

 */



/**

 * @}

 */



/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/