方法一：使用 wiringOP
它是wiringPi的变种。
git clone https://github.com/orangepi-xunlong/wiringOP.git
cd wiringOP
./build clean
./build
gpio readall
+------+-----+----------+------+---+ OPi H2 +---+------+----------+-----+------+
| GPIO | wPi | Name | Mode | V | Physical | V | Mode | Name | wPi | GPIO |
+------+-----+----------+------+---+----++----+---+------+----------+-----+------+
| | | 3.3V | | | 1 || 2 | | | 5V | | |
| 12 | 0 | SDA.0 | OFF | 0 | 3 || 4 | | | 5V | | |
| 11 | 1 | SCL.0 | OFF | 0 | 5 || 6 | | | GND | | |
| 6 | 2 | PA6 | OFF | 0 | 7 || 8 | 0 | OFF | TXD.1 | 3 | 198 |
| | | GND | | | 9 || 10 | 0 | OFF | RXD.1 | 4 | 199 |
| 1 | 5 | RXD.2 | OFF | 0 | 11 || 12 | 0 | OFF | PA07 | 6 | 7 |
| 0 | 7 | TXD.2 | OFF | 0 | 13 || 14 | | | GND | | |
| 3 | 8 | CTS.2 | OFF | 0 | 15 || 16 | 0 | OFF | SDA.1 | 9 | 19 |
| | | 3.3V | | | 17 || 18 | 0 | OFF | SCK.1 | 10 | 18 |
| 15 | 11 | MOSI.1 | OFF | 0 | 19 || 20 | | | GND | | |
| 16 | 12 | MISO.1 | OFF | 0 | 21 || 22 | 0 | OFF | RTS.2 | 13 | 2 |
| 14 | 14 | SCLK.1 | OFF | 0 | 23 || 24 | 0 | OFF | CE.1 | 15 | 13 |
| | | GND | | | 25 || 26 | 0 | OFF | PA10 | 16 | 10 |
+------+-----+----------+------+---+----++----+---+------+----------+-----+------+
| GPIO | wPi | Name | Mode | V | Physical | V | Mode | Name | wPi | GPIO |
+------+-----+----------+------+---+ OPi H2 +---+------+----------+-----+------+
#include <wiringPi.h>
int main (void)
{
wiringPiSetup () ;
pinMode (0, OUTPUT) ;
for (;;)
{
digitalWrite (0, HIGH) ; delay (500) ;
digitalWrite (0, LOW) ; delay (500) ;
}
return 0 ;
}
gcc -Wall -o blink blink.c -lwiringPi
sudo ./blink
方法二：使用 bash 脚本
使用 gpio15（wPi 11）
echo 15 > /sys/class/gpio/export
设置方向为put
echo out> /sys/class/gpio/gpio15/direction
设置高电平
echo 1 > /sys/class/gpio/gpio15/value
