/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  ** This notice applies to any and all portions of this file
  * that are not between comment pairs USER CODE BEGIN and
  * USER CODE END. Other portions of this file, whether 
  * inserted by the user or by software development tools
  * are owned by their respective copyright owners.
  *
  * COPYRIGHT(c) 2018 STMicroelectronics
  *
  * 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 "main.h"
#include "stm32f0xx_hal.h"

/* USER CODE BEGIN Includes */
#include "Globaldef.h"
#include "debug.h"
#include "Functions.h"
#include "string.h"
#include "BSP.h"

/* USER CODE END Includes */

/* Private variables ---------------------------------------------------------*/

/* USER CODE BEGIN PV */
/* Private variables ---------------------------------------------------------*/

unsigned char SlowFlicker=0;
unsigned char FastFlicker=0;


uint32_t us1,us2,us3,us4,us5,us6;

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/


/* USER CODE BEGIN PFP */
/* Private function prototypes -----------------------------------------------*/

/* USER CODE END PFP */

/* USER CODE BEGIN 0 */

void HAL_SYSTICK_Callback(void)
{
static int Count=0;
	Count++;
	if (Count>=10000) 
	{
		Count=0; 
	}

	return;
}

#define  ApplicationAddress  0x08001000  //应用程序首地址定义
#define  NewAppInfoBlockAddress 0x08020000				// 存储的新应用程序信息块的地址
#define  NewAppAddress 0x08021000				// 存储的新应用程序的地址
#define  FLASH_PAGESIZE (0x00000400)						//Page Size = 1K


typedef struct tagNewAppInfoBlock
{
	unsigned short Sign;
	unsigned short Version;
	unsigned int Length;
	unsigned int nCRC;
	
}stNewAppInfoBlock,*pNewAppInfoBlock;


typedef void (*pFunction)(void);     //定义跳转函数指针类型

/*跳转到应用程序处理函数*/
static void JumpToApplication(void)
{
  uint32_t StackAddr;           //应用程序栈地址
  uint32_t ResetVector;         //应用程序中断向量表的地址
 
  pFunction JumpToApp;          //定义跳转函数指针
 
  __set_PRIMASK(1);    //关闭全局中断
 
  StackAddr = *(__IO uint32_t*)ApplicationAddress;              //0x08001000;
  ResetVector = *(__IO uint32_t*)(ApplicationAddress + 4);      //0x08001004;
 
  if((StackAddr&0x2FFC0000)==0x20000000)        //检查栈顶地址是否合法.
  {
		__disable_irq();
		memcpy((void *)0x20000000,(void *)ApplicationAddress,0xc0);
		
		__set_MSP(StackAddr);                       //初始化应用程序栈指针
		LL_APB1_GRP2_EnableClock(LL_APB1_GRP2_PERIPH_SYSCFG);
		LL_SYSCFG_SetRemapMemory(LL_SYSCFG_REMAP_SRAM);
//		SYSCFG
    JumpToApp = (pFunction)ResetVector;           
    JumpToApp();
  }
}

int EraseFlashMem(void * pAddrFlash, unsigned int Pages)
{
	HAL_StatusTypeDef res;
	res = HAL_FLASH_Unlock();
	uint32_t ErrNo;	
	FLASH_EraseInitTypeDef erase1;
	erase1.NbPages=Pages;
	erase1.PageAddress=(unsigned int)pAddrFlash;
	erase1.TypeErase=FLASH_TYPEERASE_PAGES;
	res = HAL_FLASHEx_Erase(&erase1,&ErrNo);
	res = HAL_FLASH_Lock();
	return res;
}

int EraseAndWriteToFlashMem(void * pBuf, void * pAddrFlash, unsigned int nByteSize)
{
	
	HAL_StatusTypeDef res;
	res = HAL_FLASH_Unlock();
	uint32_t ErrNo;	
	FLASH_EraseInitTypeDef erase1;
	erase1.NbPages= (nByteSize-1) / FLASH_PAGESIZE + 1;
	erase1.PageAddress=(unsigned int)pAddrFlash;
	erase1.TypeErase=FLASH_TYPEERASE_PAGES;
	res = HAL_FLASHEx_Erase(&erase1,&ErrNo);
	
	
	for (int i=0;i<nByteSize/2;i++)
	{
		res = HAL_FLASH_Program(FLASH_TYPEPROGRAM_HALFWORD, (uint32_t)pAddrFlash + i*2, ((uint16_t *)pBuf)[i]);
	}

	res = HAL_FLASH_Lock();
	
	return res;
}

/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  *
  * @retval None
  */
int main(void)
{
  /* USER CODE BEGIN 1 */

//	InitUartstat(&Uart1Stat,Uart1RxBuf,sizeof(Uart1RxBuf),Uart1TxBuf,sizeof(Uart1TxBuf));
//	InitUartstat(&Uart2Stat,Uart2RxBuf,sizeof(Uart2RxBuf),Uart2TxBuf,sizeof(Uart2TxBuf));
  /* USER CODE END 1 */

  /* MCU Configuration----------------------------------------------------------*/

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
//  HAL_Init();

  /* USER CODE BEGIN Init */
	
  /* USER CODE END Init */

  /* Configure the system clock */

  /* USER CODE BEGIN SysInit */
 // HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/TickFreq);	//重新定义SysTick的频率
 LL_Init1msTick(8000000);
	MX_GPIO_Init();
	
  /* USER CODE END SysInit */

	
  /* USER CODE BEGIN 2 */

	//LL_USART_EnableIT_TXE(USART1);
  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */

	SetRunLed(1);				//Turn On Run Led
	SetErrLed(0);				//Turn Off Err Led
// check for app update
///*
	pNewAppInfoBlock ptheNewAppInfoBlock = (pNewAppInfoBlock) NewAppInfoBlockAddress;
	if (ptheNewAppInfoBlock->Sign == 0x55AA)
	{
		//check length and CRC;
		int length = ptheNewAppInfoBlock->Length;
		// int nCRC = CalCRC((void *)NewAppAddress,length);
		// if (nCRC == ptheNewAppInfoBlock->nCRC) 
		{
			// copy program
			EraseAndWriteToFlashMem((void*)ApplicationAddress,(void *)NewAppAddress,length);
			
			// verify copyed program
			//int nCRC2 = CalCRC((void *)NewAppAddress,length);
			
			
			//erease infoBlock
			EraseFlashMem((void *)NewAppInfoBlockAddress,1);
		}
	}
// */	 
int nCount=0;
  while (1)
  {

		SlowFlicker=0;
		FastFlicker=1;		
		us1=GetuS();
		LL_mDelay(100);
		
//		ToggleRunLed();
		ToggleErrLed();
		ToggleErr2Led();
		
//	 LL_IWDG_ReloadCounter(IWDG);
		nCount++;
		if (nCount>2) {JumpToApplication(); LL_mDelay(1000);}
		
  }	//while (1) ;
  /* USER CODE END WHILE */

  /* USER CODE BEGIN 3 */

  /* USER CODE END 3 */
}
/* USER CODE BEGIN 4 */

/* USER CODE END 4 */

/**
  * @brief  This function is executed in case of error occurrence.
  * @param  file: The file name as string.
  * @param  line: The line in file as a number.
  * @retval None
  */
void _Error_Handler(char *file, int line)
{
  /* USER CODE BEGIN Error_Handler_Debug */
  /* User can add his own implementation to report the HAL error return state */
  while(1)
  {
  }
  /* USER CODE END Error_Handler_Debug */
}

#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,
     tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */

/**
  * @}
  */

/**
  * @}
  */

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