STM32CubeF1/Projects/STM3210C_EVAL/Applications/IAP/IAP_Main/Src/main.c

/**
  ******************************************************************************
  * @file    IAP_Main/Src/main.c 
  * @author  MCD Application Team
  * @brief   Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2016 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */

/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "menu.h"

/** @addtogroup STM32F1xx_IAP_Main
  * @{
  */

/* Exported variables --------------------------------------------------------*/
/* UART handler declaration */
UART_HandleTypeDef UartHandle;


/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
extern pFunction JumpToApplication;
extern uint32_t JumpAddress;

/* Private function prototypes -----------------------------------------------*/
static void IAP_Init(void);
void SystemClock_Config(void);

/**
  * @brief  Main program
  * @param  None
  * @retval None
  */
int main(void)
{
  /* STM32F107xC HAL library initialization:
       - Configure the Flash prefetch
       - Systick timer is configured by default as source of time base, but user 
         can eventually implement his proper time base source (a general purpose 
         timer for example or other time source), keeping in mind that Time base 
         duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and 
         handled in milliseconds basis.
       - Set NVIC Group Priority to 4
       - Low Level Initialization
     */
  HAL_Init();

  /* Configure the system clock to 72 MHz */
  SystemClock_Config();

  /* Initialize Key Button mounted on STM3210C-EVAL RevC board */
  BSP_PB_Init(BUTTON_KEY, BUTTON_MODE_GPIO);

  /* Test if Key push-button on STM3210C-EVAL RevC Board is pressed */
  if (BSP_PB_GetState(BUTTON_KEY) == GPIO_PIN_RESET)
  { 
    /* Initialise Flash */
    FLASH_If_Init();
    /* Execute the IAP driver in order to reprogram the Flash */
    IAP_Init();
    /* Display main menu */
    Main_Menu ();
  }
  /* Keep the user application running */
  else
  {
    /* Test if user code is programmed starting from address "APPLICATION_ADDRESS" */
    if (((*(__IO uint32_t*)APPLICATION_ADDRESS) & 0x2FFE0000 ) == 0x20000000)
    {
      /* Jump to user application */
      JumpAddress = *(__IO uint32_t*) (APPLICATION_ADDRESS + 4);
      JumpToApplication = (pFunction) JumpAddress;
      /* Initialize user application's Stack Pointer */
      __set_MSP(*(__IO uint32_t*) APPLICATION_ADDRESS);
      JumpToApplication();
    }
  }

  while (1)
  {}
}

/**
  * @brief  System Clock Configuration
  *         The system Clock is configured as follow : 
  *            System Clock source            = PLL (HSE)
  *            SYSCLK(Hz)                     = 72000000
  *            HCLK(Hz)                       = 72000000
  *            AHB Prescaler                  = 1
  *            APB1 Prescaler                 = 2
  *            APB2 Prescaler                 = 1
  *            HSE Frequency(Hz)              = 25000000
  *            HSE PREDIV1                    = 5
  *            HSE PREDIV2                    = 5
  *            PLL2MUL                        = 8
  *            Flash Latency(WS)              = 2
  * @param  None
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_ClkInitTypeDef clkinitstruct = {0};
  RCC_OscInitTypeDef oscinitstruct = {0};
  
  /* Configure PLLs ------------------------------------------------------*/
  /* PLL2 configuration: PLL2CLK = (HSE / HSEPrediv2Value) * PLL2MUL = (25 / 5) * 8 = 40 MHz */
  /* PREDIV1 configuration: PREDIV1CLK = PLL2CLK / HSEPredivValue = 40 / 5 = 8 MHz */
  /* PLL configuration: PLLCLK = PREDIV1CLK * PLLMUL = 8 * 9 = 72 MHz */ 

  /* Enable HSE Oscillator and activate PLL with HSE as source */
  oscinitstruct.OscillatorType        = RCC_OSCILLATORTYPE_HSE;
  oscinitstruct.HSEState              = RCC_HSE_ON;
  oscinitstruct.HSEPredivValue        = RCC_HSE_PREDIV_DIV5;
  oscinitstruct.Prediv1Source         = RCC_PREDIV1_SOURCE_PLL2;
  oscinitstruct.PLL.PLLState          = RCC_PLL_ON;
  oscinitstruct.PLL.PLLSource         = RCC_PLLSOURCE_HSE;
  oscinitstruct.PLL.PLLMUL            = RCC_PLL_MUL9;
  oscinitstruct.PLL2.PLL2State        = RCC_PLL2_ON;
  oscinitstruct.PLL2.PLL2MUL          = RCC_PLL2_MUL8;
  oscinitstruct.PLL2.HSEPrediv2Value  = RCC_HSE_PREDIV2_DIV5;
  if (HAL_RCC_OscConfig(&oscinitstruct)!= HAL_OK)
  {
    /* Initialization Error */
    while(1);
  }

  /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2 
     clocks dividers */
  clkinitstruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
  clkinitstruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  clkinitstruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  clkinitstruct.APB2CLKDivider = RCC_HCLK_DIV1;
  clkinitstruct.APB1CLKDivider = RCC_HCLK_DIV2;  
  if (HAL_RCC_ClockConfig(&clkinitstruct, FLASH_LATENCY_2)!= HAL_OK)
  {
    /* Initialization Error */
    while(1); 
  }
}


/**
  * @brief  Initialize the IAP: Configure USART.
  * @param  None
  * @retval None
  */
void IAP_Init(void)
{
  /* USART resources configuration (Clock, GPIO pins and USART registers) ----*/
  /* USART configured as follow:
        - BaudRate = 115200 baud  
        - Word Length = 8 Bits
        - One Stop Bit
        - No parity
        - Hardware flow control disabled (RTS and CTS signals)
        - Receive and transmit enabled
  */
  UartHandle.Init.BaudRate = 115200;
  UartHandle.Init.WordLength = UART_WORDLENGTH_8B;
  UartHandle.Init.StopBits = UART_STOPBITS_1;
  UartHandle.Init.Parity = UART_PARITY_NONE;
  UartHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE;
  UartHandle.Init.Mode = UART_MODE_RX | UART_MODE_TX;

  BSP_COM_Init(COM1, &UartHandle);

}

#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 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) */

  /* Infinite loop */
  while (1)
  {}
}
#endif

/**
  * @}
  */