main.c
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/**************************************************************************
* STM32F407ZET6芯片有512K的FLASH,有192K的RAM（128K SRAM和64K CCM）
*
* Bootloader功能介绍：
* 在芯片上电之后，首先运行的是Bootloader，Bootloader引导程序根据Flash上Flag段
* 的数据选择将哪一部分的固件加载到运行区间。
*
* BootLoader预留空间为16K
****************************************************************************/
#include "delay.h"
#include "usart.h"
#include "iap.h"
#include "flash.h"
#include "timer.h"
#include "fsmc.h"
int main(void)
{
uint32_t handle;
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_4);//设置系统中断优先级分组4
Delay_init();
USART1_Config(115200); //debug
UART5_Config(115200); //IAP
TIM3_Config(2048,2048); //Fram control
FSMC_SRAM_Init(); //EXT SRAM
printf("\r\n**********BootLoader**********\r\n");
memset(UART_RX_BUF,0,USART_REC_LEN);
Detection_Update(); //本地升级
handle = STMFLASH_ReadWord(FLAG_BASE_ADDR);
switch(handle) //选择加载那一部分的固件
{
case BOOTLOADER_RUN: //运行段
printf("\r\n**********Runing Firmware **********\r\n");
Tick_Delay_ms(20);
Run_Flash_App(APP_RUN_ADDR);
break;
case BOOTLOADER_LOAD: //升级段
printf("\r\n**********Loading Firmware **********\r\n");
#if 0
handle = APP_RUN_ADDR;
STMFLASH_Write(APP_BACK_ADDR,(uint32_t *)handle,128*1024);
Tick_Delay_ms(10);
#endif
handle = APP_LOAD_ADDR;
STMFLASH_Write(APP_RUN_ADDR,(uint32_t *)handle,128*1024);
Tick_Delay_ms(10);
handle = BOOTLOADER_RUN;
STMFLASH_Write(FLAG_BASE_ADDR,(uint32_t *)&handle,4);
Run_Flash_App(APP_RUN_ADDR);
break;
#if 0
case BOOTLOADER_BACK: //回滚段
printf("\r\n**********Backup Firmware **********\r\n");
handle = APP_BACK_ADDR;
STMFLASH_Write(APP_RUN_ADDR,(uint32_t *)handle,128*1024);
Tick_Delay_ms(10);
handle = BOOTLOADER_RUN;
STMFLASH_Write(FLAG_BASE_ADDR,(uint32_t *)&handle,4);
Tick_Delay_ms(10);
Run_Flash_App(APP_RUN_ADDR);
break;
#endif
case BOOTLOADER_DEFAULT: //利于出厂（默认加载这一段）
printf("\r\n**********Default Firmware **********\r\n");
handle = BOOTLOADER_RUN;
STMFLASH_Write(FLAG_BASE_ADDR,(uint32_t *)&handle,4);
Run_Flash_App(APP_RUN_ADDR);
break;
default :
printf("\r\n**********Don^t Having Firmware **********\r\n");
break;
}
while(1) //预留通过网口升级的接口（CH395Q）
{
printf("\r\n********IDLE********\r\n");
Tick_Delay_ms(5000);
}
}