四、串口控制LED灯

串口控制LED灯

1.USART_GetFlagStatus（获取串口状态）

2.USART_ReceiveData (串口接收函数)

3.编写main函数

4.实验结果

参数1:USARTX串口(如:USART1)
参数2:USART_FLAG_xxx
USART_FLAG_TXE   发送
USART_FLAG_RXNE  接收
//下面笔者还没有研究。初学者
USART_FLAG_IDLE
USART_FLAG_ORE
USART_FLAG_NE
USART_FLAG_FE
USART_FLAG_PE
USART_FLAG_TC
USART_FLAG_CTS
USART_FLAG_LBD

参数:USARTX串口(如:USART1)

#include "stm32f10x.h"
#include "led.h"
#include "stm32f10x_rcc.h"
#include "misc.h"
#include "usart.h"
#include <stdio.h>
void Delay(uint32_t nCount){
uint32_t i;
for(i=0;i<nCount;i++);
}
char ReceivedData = NULL;
int main(){
LED_GPIO_Config();
USART1_Config();
while(1){
/* Wait until a byte is received */
while(USART_GetFlagStatus(USART1, USART_FLAG_RXNE) == RESET)
{
}
/* read byte and print via usart2 it */
ReceivedData = USART_ReceiveData(USART1);
printf("Positionen: %d \r\n", ReceivedData);
if (ReceivedData == '1'){
printf("LED1(ON)");
LED1(ON);
Delay(0xFFFFFF);
}else if(ReceivedData=='0'){
LED1(OFF);
Delay(0xFFFFFF);
printf("LED1(OFF)");
}else{
break;
}

}
}

发1 LED ON
发0 LED OFF