110 lines
2.7 KiB
C
110 lines
2.7 KiB
C
/* Copyright (c) 2013-2015 Jeffrey Pfau
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef GBA_HARDWARE_H
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#define GBA_HARDWARE_H
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#include <mgba-util/common.h>
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CXX_GUARD_START
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#include <mgba/core/log.h>
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#include <mgba/core/timing.h>
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#include <mgba/gba/interface.h>
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mLOG_DECLARE_CATEGORY(GBA_HW);
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#define IS_GPIO_REGISTER(reg) ((reg) == GPIO_REG_DATA || (reg) == GPIO_REG_DIRECTION || (reg) == GPIO_REG_CONTROL)
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enum GPIORegister {
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GPIO_REG_DATA = 0xC4,
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GPIO_REG_DIRECTION = 0xC6,
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GPIO_REG_CONTROL = 0xC8
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};
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enum GPIODirection {
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GPIO_WRITE_ONLY = 0,
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GPIO_READ_WRITE = 1
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};
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DECL_BITFIELD(RTCControl, uint8_t);
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DECL_BIT(RTCControl, MinIRQ, 3);
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DECL_BIT(RTCControl, Hour24, 6);
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DECL_BIT(RTCControl, Poweroff, 7);
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enum RTCCommand {
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RTC_RESET = 0,
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RTC_DATETIME = 2,
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RTC_FORCE_IRQ = 3,
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RTC_CONTROL = 4,
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RTC_TIME = 6
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};
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DECL_BITFIELD(RTCCommandData, uint32_t);
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DECL_BITS(RTCCommandData, Magic, 0, 4);
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DECL_BITS(RTCCommandData, Command, 4, 3);
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DECL_BIT(RTCCommandData, Reading, 7);
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struct GBARTC {
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int32_t bytesRemaining;
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int32_t transferStep;
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int32_t bitsRead;
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int32_t bits;
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int32_t commandActive;
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RTCCommandData command;
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RTCControl control;
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uint8_t time[7];
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time_t lastLatch;
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time_t offset;
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};
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DECL_BITFIELD(GPIOPin, uint16_t);
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struct GBACartridgeHardware {
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struct GBA* p;
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uint32_t devices;
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enum GPIODirection readWrite;
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uint16_t* gpioBase;
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uint8_t writeLatch;
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uint8_t pinState;
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uint8_t direction;
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struct GBARTC rtc;
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uint16_t gyroSample;
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bool gyroEdge;
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unsigned lightCounter : 12;
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uint8_t lightSample;
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bool lightEdge;
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uint16_t tiltX;
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uint16_t tiltY;
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int tiltState;
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};
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void GBAHardwareInit(struct GBACartridgeHardware* gpio, uint16_t* gpioBase);
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void GBAHardwareReset(struct GBACartridgeHardware* gpio);
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void GBAHardwareClear(struct GBACartridgeHardware* gpio);
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void GBAHardwareInitRTC(struct GBACartridgeHardware* gpio);
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void GBAHardwareInitGyro(struct GBACartridgeHardware* gpio);
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void GBAHardwareInitRumble(struct GBACartridgeHardware* gpio);
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void GBAHardwareInitLight(struct GBACartridgeHardware* gpio);
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void GBAHardwareInitTilt(struct GBACartridgeHardware* gpio);
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void GBAHardwareGPIOWrite(struct GBACartridgeHardware* gpio, uint32_t address, uint16_t value);
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void GBAHardwareTiltWrite(struct GBACartridgeHardware* gpio, uint32_t address, uint8_t value);
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uint8_t GBAHardwareTiltRead(struct GBACartridgeHardware* gpio, uint32_t address);
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struct GBASerializedState;
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void GBAHardwareSerialize(const struct GBACartridgeHardware* gpio, struct GBASerializedState* state);
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void GBAHardwareDeserialize(struct GBACartridgeHardware* gpio, const struct GBASerializedState* state);
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CXX_GUARD_END
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#endif
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