STM32单片机每个一定时间通过串口向上位机发送固定命令求程序代码

密耳 · 发表于 2016-11-10 08:58:10

写了，，钱给我吧.......

//**********************′®¿úêy¾Y·￠Ëí******************************
void COM1SEND (u8 com1)
{
USART_SendData(USART1,com1);
while(USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET);
}
int main(void)
{
// u16 i=0;
delay_init();              //Ñóê±oˉêy3õê¼»ˉ
IO_Init();    //GPIO3õê¼»ˉ
NVIC_Configuration();      //éèÖÃNVICÖD¶Ï·Ö×é2:2Î»ÇàÕ¼óÅÏè¼¶￡¬2Î»Ïìó|óÅÏè¼¶
uart_init(115200); //2¨ìØÂê115200
TIM3_Init(249,7199); //
IWDG_Init(7,1875); //¿′ÃÅ1·òç3öê±¼äÎa12s
  while(1)
{
//***************
if(T500F)       //
{    //
T500F = 0;
}
//*****************′®¿ú½óêÕêy¾Y′|àí**********
UART1_task();
//*******************************************
if(T1000F)      //¶¨ê±1Ãëê±¼ä¶á′Îê±¼ä
{ //Çå3y±êÖ¾Î»
T1000F = 0;
                     COM1SEND (a);
                     COM1SEND (b);
                     ...
                     ...
                     COM1SEND (x);
}
if(T5000F)
{
T5000F = 0;
IWDG_Feed(); //5ÃëÎ11·
}
}
}
//****************¶¨ê±Æ÷3ÖD¶Ï·tÎñ3ìDò*******************************
void TIM3_IRQHandler(void)    //TIM3ÖD¶Ï 25oáÃëÖD¶Ï
{
static u8 t500c = 0; //0.5Ãë¼ÆêyÆ÷¼ÆêyÆ÷
static u8 t1000c = 0; //1Ãë¼ÆêyÆ÷
static u8 t5000c = 0; //5Ãë¼ÆêyÆ÷
if(TIM_GetITStatus(TIM3, TIM_IT_Update) != RESET) //¼ì2éTIM3¸üDÂÖD¶Ï·￠éúóë·ñ
{
t500c++;
t1000c++;
t5000c++;

if(t5000c==200)      //5Ãëê±¼äμ½
{
t5000c = 0;
T5000F = 1;
}
if(t500c==20)      //0.5Ãëê±¼äμ½
{
t500c = 0;
T500F = 1;
}
if(t1000c==20)      //0.8Ãëê±¼äμ½
{
t1000c = 0;
T1000F = 1;
}
TIM_ClearITPendingBit(TIM3,TIM_IT_Update); //Çå3yTIMx¸üDÂÖD¶Ï±êÖ¾
}
}