STM32-IAP项目代码使用中

ID:523845 · 发表于 2019-4-28 17:57

项目中正在使用的 STM32系列单片机的远程IAP使用方式，从此刷机不用再拆机！

单片机源程序如下:

/*******************************************************************************
** 功能: 远程烧写程序的启动文件
*******************************************************************************/
#include "stm32boot.h"
#include "EEPROM.h"
/* 类型声明 -----------------------------------------------------------------*/
typedef void (*pFunction)(void);
/* 变量 ----------------------------------------------------------------------*/
pFunction Jump_To_Application ;
uint32_t JumpAddress;
#define ApplicationAddress 0x8003000
void NVIC_Configuration(void);
/*******************************************************************************
* @函数名称 main
* @函数说明主函数
* @输入参数无
* @输出参数无
* @返回参数无
*******************************************************************************/
extern __IO unsigned long time32_incr;
unsigned long portGetTickCnt(void)
{
// time32_incr = SysTick->VAL;
return time32_incr;
}
void Sleep(unsigned int time_ms)
{
unsigned long end = portGetTickCnt() + time_ms;
while ((signed long)(portGetTickCnt() - end) <= 0)
;
}
void CloseIrq(void)
{
SysTick->CTRL&=~SysTick_CTRL_ENABLE_Msk;//关闭SYSTICK中断
DMA_ITConfig(DMA1_Channel7, DMA_IT_TC, DISABLE); //使能DMA通道4传输完成中断
DMA_ITConfig(DMA1_Channel7, DMA_IT_TE, DISABLE);
USART_ITConfig(USART2, USART_IT_IDLE, DISABLE);
USART_DeInit(USART2);
DMA_DeInit(DMA1_Channel7);
DMA_DeInit(DMA1_Channel6);
}
int main(void)
{
int i=1200;
u16 FLAG = 0;
/* Enable PWR and BKP clocks */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);
/* Allow access to BKP Domain */
PWR_BackupAccessCmd(ENABLE);
FLASH_Unlock();
UART2_Configuration();
SysTick_Init();
NVIC_Configuration();
Sleep(20);
printf("bootv2.0-20181210\r\n");
while (i--)
{
Communication();
Sleep(20);
}
eeprom_read_block(&FLAG, PROGRAMS_ADDR, 2);
if (FLAG == 0xE0E0)
{
// DevAddr = 1;
// NVIC_Configuration();
// FLASH_Unlock() ;
// //串口初始化
// UART2_Configuration();0
// //系统时基启动
// // SysTick_Init();
//
// led_on();
while (1)
{
Communication();
}
}
//否则执行用户程序
else
{
//判断用户是否已经下载程序，因为正常情况下此地址是栈地址。
//若没有这一句的话，即使没有下载程序也会进入而导致跑飞。
FLASH_Lock();
if (((*(__IO uint32_t*)ApplicationAddress) & 0x2FFE0000 ) == 0x20000000)
{
JumpAddress = *(__IO uint32_t*) (ApplicationAddress + 4);
Jump_To_Application = (pFunction) JumpAddress;
//初始化用户程序的堆栈指针
__set_MSP(*(__IO uint32_t*) ApplicationAddress);
printf("jump to app\r\n");
CloseIrq();
Jump_To_Application();
}
else
{
u16 data = 0xE0E0;
eeprom_write_block(&data, PROGRAMS_ADDR, 2);
printf("no app wait program\r\n");
SoftReset();
}
}
while (1)
{
}
}
#define Set_NVIC(Channel,Preemption,Sub,Cmd) { NVIC_InitStructure.NVIC_IRQChannel = Channel; \
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = Preemption; \
NVIC_InitStructure.NVIC_IRQChannelSubPriority = Sub; \
NVIC_InitStructure.NVIC_IRQChannelCmd = Cmd; \
NVIC_Init(&NVIC_InitStructure); }
//************************************************************************************************
//**名称：NVIC_Init
//**说明：中断优先级初始化
//**形参：无
//**返回值：无
//************************************************************************************************
void NVIC_Configuration (void)
{
NVIC_InitTypeDef NVIC_InitStructure;
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); //4个抢占优先级，4个从优先级
/* Configure the SysTick handler priority */
NVIC_SetPriority(SysTick_IRQn, 0);//SysTick中断优先级设置 //非实时任务优先级最低 3,0
Set_NVIC(USART2_IRQn , 2, 0,ENABLE) ;
}
/*******************************文件结束***************************************/