以下是几种常见的闪烁程序的方法:
- 使用Python编写闪烁程序
```python import time import RPi.GPIO as GPIO
设置GPIO模式为BCM
GPIO.setmode(GPIO.BCM)
定义LED连接的GPIO引脚
LED_PIN = 18
设置GPIO引脚为输出模式
GPIO.setup(LED_PIN, GPIO.OUT)
try: while True: # 点亮LED GPIO.output(LED_PIN, GPIO.HIGH) time.sleep(0.5)
# 熄灭LED
GPIO.output(LED_PIN, GPIO.LOW)
time.sleep(0.5)
except KeyboardInterrupt: # 清理GPIO设置 GPIO.cleanup() ```
- 使用C语言编写闪烁程序
```c
include
include
include
include
include
include
int main(int argc, char *argv[]) { int fd; char path[] = "/sys/class/gpio/gpio" + argv[1]; fd = open(path, O_WRONLY); if (fd == -1) { perror("Failed to open GPIO"); exit(EXIT_FAILURE); }
// 设置GPIO为输出模式
write(fd, "1", 1);
// 点亮LED
write(fd, "1", 1);
sleep(0.5);
// 熄灭LED
write(fd, "0", 1);
sleep(0.5);
// 清理GPIO设置
close(fd);
return 0;
} ```
- 使用Java编写闪烁程序
```java import java.io.IOException; import java.io.OutputStream;
public class Blink { public static void main(String[] args) throws IOException { // 设置GPIO引脚为输出模式 System.out.println("Setting GPIO pin " + args[0] + " to output mode..."); System.out.println("Blinking LED on GPIO pin " + args[0] + " for 5 seconds...");
// 点亮LED
System.out.println("Turning LED ON...");
Thread.sleep(5000);
// 熄灭LED
System.out.println("Turning LED OFF...");
Thread.sleep(5000);
// 清理GPIO设置
}
} ```
这些程序使用了不同的编程语言和库来实现LED的闪烁效果。你可以根据自己的需求和技能水平选择合适的方法。