材料准备
1、树莓派3B
2、LED小灯
3、220欧电阻一个（红红黑黑金）
4、面包板
5、杜邦线公母2条
线缆连接
代码
#include<wiringPi.h>//包含wiringPi头文件int main(void){wiringPiSetup();//wiringPi库初始化pinMode(0, OUTPUT);//设置0口为输出模式for(;;)//循环执行{digitalWrite(0, HIGH); //GPIO.0输出高电平delay(1000);//延迟1000msdigitalWrite(0, LOW); // GPIO.0输出高电平delay(1000);//延迟1000ms}return 0;
编译
gcc -o LED LED.c -lwiringPi
执行
root@raspberrypi:/home/led/wiringPi# ./LED^Croot@raspberrypi:/home/led/wiringPi# gpio readall+-----+-----+---------+------+---+---Pi 3B--+---+------+---------+-----+-----+| BCM | wPi | Name | Mode | V | Physical | V | Mode | Name | wPi | BCM |+-----+-----+---------+------+---+----++----+---+------+---------+-----+-----+||| 3.3v || | 1 || 2 | || 5v|||| 2 | 8 | SDA.1 | IN | 1 | 3 || 4 | || 5v|||| 3 | 9 | SCL.1 | IN | 1 | 5 || 6 | || 0v|||| 4 | 7 | GPIO. 7 | IN | 1 | 7 || 8 | 0 | IN | TxD| 15 | 14 ||||0v || | 9 || 10 | 1 | IN | RxD| 16 | 15 || 17 | 0 | GPIO. 0 | OUT | 1| 11 || 12 | 0 | IN | GPIO. 1 | 1 | 18 || 27 | 2 | GPIO. 2 | IN | 0 | 13 || 14 | || 0v|||| 22 | 3 | GPIO. 3 | IN | 0 | 15 || 16 | 0 | IN | GPIO. 4 | 4 | 23 |||| 3.3v || | 17 || 18 | 0 | IN | GPIO. 5 | 5 | 24 || 10 | 12 | MOSI | IN | 0 | 19 || 20 | || 0v|||| 9 | 13 | MISO | IN | 0 | 21 || 22 | 0 | IN | GPIO. 6 | 6 | 25 || 11 | 14 | SCLK | IN | 0 | 23 || 24 | 1 | IN | CE0| 10 | 8 ||||0v || | 25 || 26 | 1 | IN | CE1| 11 | 7 || 0 | 30 | SDA.0 | IN | 1 | 27 || 28 | 1 | IN | SCL.0 | 31 | 1 || 5 | 21 | GPIO.21 | IN | 1 | 29 || 30 | || 0v|||| 6 | 22 | GPIO.22 | IN | 1 | 31 || 32 | 0 | IN | GPIO.26 | 26 | 12 || 13 | 23 | GPIO.23 | IN | 0 | 33 || 34 | || 0v|||| 19 | 24 | GPIO.24 | IN | 0 | 35 || 36 | 0 | IN | GPIO.27 | 27 | 16 || 26 | 25 | GPIO.25 | IN | 0 | 37 || 38 | 0 | IN | GPIO.28 | 28 | 20 ||||0v || | 39 || 40 | 0 | IN | GPIO.29 | 29 | 21 |+-----+-----+---------+------+---+----++----+---+------+---------+-----+-----+
说明：V电平是1时，LED灯亮。
root@raspberrypi:/home/led/wiringPi# ./LED^Croot@raspberrypi:/home/led/wiringPi# root@raspberrypi:/home/led/wiringPi# root@raspberrypi:/home/led/wiringPi# gpio readall+-----+-----+---------+------+---+---Pi 3B--+---+------+---------+-----+-----+| BCM | wPi | Name | Mode | V | Physical | V | Mode | Name | wPi | BCM |+-----+-----+---------+------+---+----++----+---+------+---------+-----+-----+||| 3.3v || | 1 || 2 | || 5v|||| 2 | 8 | SDA.1 | IN | 1 | 3 || 4 | || 5v|||| 3 | 9 | SCL.1 | IN | 1 | 5 || 6 | || 0v|||| 4 | 7 | GPIO. 7 | IN | 1 | 7 || 8 | 0 | IN | TxD| 15 | 14 ||||0v || | 9 || 10 | 1 | IN | RxD| 16 | 15 || 17 | 0 | GPIO. 0 | OUT | 0| 11 || 12 | 0 | IN | GPIO. 1 | 1 | 18 || 27 | 2 | GPIO. 2 | IN | 0 | 13 || 14 | || 0v|||| 22 | 3 | GPIO. 3 | IN | 0 | 15 || 16 | 0 | IN | GPIO. 4 | 4 | 23 |||| 3.3v || | 17 || 18 | 0 | IN | GPIO. 5 | 5 | 24 || 10 | 12 | MOSI | IN | 0 | 19 || 20 | || 0v|||| 9 | 13 | MISO | IN | 0 | 21 || 22 | 0 | IN | GPIO. 6 | 6 | 25 || 11 | 14 | SCLK | IN | 0 | 23 || 24 | 1 | IN | CE0| 10 | 8 ||||0v || | 25 || 26 | 1 | IN | CE1| 11 | 7 || 0 | 30 | SDA.0 | IN | 1 | 27 || 28 | 1 | IN | SCL.0 | 31 | 1 || 5 | 21 | GPIO.21 | IN | 1 | 29 || 30 | || 0v|||| 6 | 22 | GPIO.22 | IN | 1 | 31 || 32 | 0 | IN | GPIO.26 | 26 | 12 || 13 | 23 | GPIO.23 | IN | 0 | 33 || 34 | || 0v|||| 19 | 24 | GPIO.24 | IN | 0 | 35 || 36 | 0 | IN | GPIO.27 | 27 | 16 || 26 | 25 | GPIO.25 | IN | 0 | 37 || 38 | 0 | IN | GPIO.28 | 28 | 20 ||||0v || | 39 || 40 | 0 | IN | GPIO.29 | 29 | 21 |+-----+-----+---------+------+---+----++----+---+------+---------+-----+-----+| BCM | wPi | Name | Mode | V | Physical | V | Mode | Name | wPi | BCM |+-----+-----+---------+------+---+---Pi 3B--+---+------+---------+-----+-----+
说明：V电平是0时，LED灯灭。
