[树莓派]控制发光二极管

RaspberryPi[树莓派]控制发光二极管

作者：LinuxHub   发布：2013-04-20 04:26   分类：RaspberryPi    

RaspberryPi[树莓派]控制LED灯
通过Raspberry Pi(树莓派)的GPIO接口控制发光二极管

视频： http://v.youku.com/v_show/id_XNTQ1MzgwMDY0.html

1.安装些必要的库文件

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pi@raspberrypi /home/apinglai $ sudo apt-get install libi2c-dev pi@raspberrypi /home/apinglai $ sudo apt-get install i2c-tools pi@raspberrypi /home/apinglai $ sudo apt-get install python-smbus

2.下载安装wiringPi

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pi@raspberrypi /home/apinglai/down $ wget http://project-downloads.drogon.net/files/wiringPi.tgz pi@raspberrypi /home/apinglai/down $ tar xf wiringPi.tgz pi@raspberrypi /home/apinglai/down $ cd wiringPi/wiringPi/ pi@raspberrypi /home/apinglai/down/wiringPi/wiringPi $ sudo make uninstall pi@raspberrypi /home/apinglai/down/wiringPi/wiringPi $ sudo make pi@raspberrypi /home/apinglai/down/wiringPi/wiringPi $ sudo make install

3.编写C程序

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pi@raspberrypi /home/apinglai $ sudo vim led.c   #include #include #include   int main (int argc,char* argv[]) {   if (argc < 2) {     printf("Usage example: ./led 4 \n");     return 1;   }   int pinNumber = atoi(argv[1]);     if (-1 == wiringPiSetup()) {     printf("Setup wiringPi failed!");     return 1;   }     pinMode(pinNumber, OUTPUT); // set mode to output   while(1) {     digitalWrite(pinNumber, 1); // output a high level     delay(800);     digitalWrite(pinNumber, 0); // output a low level     delay(800);   }     return 0; }

4.编译

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pi@raspberrypi /home/apinglai $ gcc led.c -o led -lwiringPi pi@raspberrypi /home/apinglai $ ls led  led.c

5.运行程序

1	pi@raspberrypi /home/apinglai $ sudo ./led 4

 

转载于:https://my.oschina.net/u/4047409/blog/3051597