48 lines
1.3 KiB
C
Executable File
48 lines
1.3 KiB
C
Executable File
#ifndef _PXA255_GPIO_H_
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#define _PXA255_GPIO_H_
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#include "mem.h"
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#include "CPU.h"
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#include "pxa255_IC.h"
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/*
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PXA255 OS GPIO controller
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*/
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#define PXA255_GPIO_BASE 0x40E00000UL
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#define PXA255_GPIO_SIZE 0x00001000UL
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typedef struct{
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Pxa255ic* ic;
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UInt32 latches[3]; //what pxa wants to be outputting
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UInt32 inputs[3]; //what pxa is receiving [only set by the pxa255gpioSetState() API]
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UInt32 levels[3]; //what pxa sees (it differs from above for IN pins)
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UInt32 dirs[3]; //1 = output
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UInt32 riseDet[3]; //1 = rise detect
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UInt32 fallDet[3]; //1 = fall detect
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UInt32 detStatus[3]; //1 = detect happened
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UInt32 AFRs[6]; //1, 2, 3 = alt funcs
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}Pxa255gpio;
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#define PXA255_GPIO_LOW 0 //these values make it look like all HiZ, AFR, and nonexistent pins have pullups to those who dumbly assume gpioGEt returns a boolean
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#define PXA255_GPIO_HIGH 1
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#define PXA255_GPIO_HiZ 2
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#define PXA255_GPIO_AFR1 3
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#define PXA255_GPIO_AFR2 4
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#define PXA255_GPIO_AFR3 5
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#define PXA255_GPIO_NOT_PRESENT 6
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Boolean pxa255gpioInit(Pxa255gpio* gpio, ArmMem* physMem, Pxa255ic* ic);
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//for external use :)
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UInt8 pxa255gpioGetState(Pxa255gpio* gpio, UInt8 gpioNum);
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void pxa255gpioSetState(Pxa255gpio* gpio, UInt8 gpioNum, Boolean on); //we can only set value (and only of input pins), not direction
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#endif
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