Shell编程-2.ppt
linux下的shell编程教程,讲得不错,值得学习学习。
/********************************************************************************************* * File: led_test.c * Author: embest * Desc: IO port test file * History: *********************************************************************************************/ /*------------------------------------------------------------------------------------------*/ /* include files */ /*------------------------------------------------------------------------------------------*/ #include "2410lib.h" /********************************************************************************************* * name: led_on * func: turn on the leds one by one * para: none * ret: none * modify: * comment: *********************************************************************************************/ void led_on(void) { int i,nOut; nOut = 0xF0; //rGPFDAT=nOut & 0x10; rGPFDAT=nOut & 0xd0; for(i=0;i<1000000;i++); rGPFDAT = nOut & 0x50; //0x70 for(i=0;i<100000;i++); rGPFDAT=nOut & 0x40; //0x00 for(i=0;i<100000;i++); rGPFDAT=nOut & 0x00; //0x30 for(i=0;i<100000;i++); rGPFDAT=nOut ; }