单片机向电脑发送数据通常可以通过以下几种方式实现:
1. 串口通信:
直接连接:使用串口线(如USB转串口线)将单片机的串口(如UART)直接连接到电脑的串口。
USB转串口:通过USB转串口模块(如CH340)将单片机的串口转换为USB接口,然后连接到电脑。
代码示例(C语言):
```c
include
include
include
include
include
include
int main() {
int fd = open("/dev/ttyUSB0", O_RDWR O_NOCTTY O_NDELAY);
if (fd == -1) {
perror("open serial port failed");
exit(1);