Linux按键驱动程序设计(3)-按键操做硬件实现

1.复习裸机按键操做驱动node #define GPGCON  (volatile unsigned long *)0x56000060   /*  * K1,K2,K3,K4对应GPG0、GPG三、GPG五、GPG6  */ #define GPG0_int     (0x2<<(0*2)) #define GPG3_int     (0x2<<(3*2)) #define GPG5_int

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