qt210 有4個led，例程建立乙個work，實現每秒鐘流水燈的運轉
#include #include #include #include #include #include #include #include #include #include static struct delayed_work my_work;
//static int watercount=0;
volatile unsigned long *gph0con = null;
volatile unsigned long *gph0dat = null;
static void waterfun(void)
static int __init waterinit(void)
static void __exit waterexit(void)
module_init(waterinit);
module_exit(waterexit);
module_license("gpl");
Linux驅動修煉之道 流水燈
module.h包含可裝載模組需要的大量符號和函式定義，包含init.h的目的是指定初始化和清除 struct file是在中定義的。註冊字元裝置使用 int register chrdev unsigned int major,const char name,struct file operati...
Linux驅動開發 LED流水燈驅動示例
include include include include include include include include include include include include include include define device name flowled define led ...
S5PV210實現流水燈功能
1.如何點亮led 要求 正極和負極之間有正向的電壓差 方法 正極已經接了3.3v的電源，負極接在了soc的引腳上，可以通過soc中程式設計控制負極輸出低電平 0v 使得正負極之間有了正向電壓差，led即可點亮。2.gpio general purpose input output gpio就是晶元...