keypad.txt

arm体系结构和编程,一份很好的ARM汇编编程资料

1.dllmain
2.init
 1.Allocate a keypad controller object
 2.power up
 3.KeyPadConfigure
 	 configure GpioReg
 	 Init the control regs
   Enable the Interrupts
 4.IsrThreadStart
3.KeyPadIsrThread begin wait for Interrupt Envent
 1.disable interrupt
 2.read scancode
 3.enable interrupt