生成一个51单片机串口通讯的c语言代码
时间: 2023-05-19 21:04:38 浏览: 167
以下是一个简单的51单片机串口通讯的C语言代码示例:
```c
#include <reg51.h>
#define BAUDRATE 9600
#define FOSC 11059200L
#define TIMER_PRESCALER 12
void init_serial() {
TMOD &= 0x0F;
TMOD |= 0x20;
TH1 = 256 - (FOSC / TIMER_PRESCALER / BAUDRATE);
TL1 = TH1;
TR1 = 1;
SM0 = 0;
SM1 = 1;
REN = 1;
EA = 1;
ES = 1;
}
void send_char(char c) {
SBUF = c;
while (!TI);
TI = 0;
}
void send_string(char *s) {
while (*s) {
send_char(*s++);
}
}
void receive_interrupt() interrupt 4 {
if (RI) {
RI = 0;
// do something with the received character
}
}
void main() {
init_serial();
while (1) {
// do something
}
}
```
这个代码使用了定时器1来生成波特率,使用了串口中断来接收字符。你可以根据自己的需求修改代码。
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