joybus_accessory_internal.h File Reference

Joybus accessory internal utilities. More...

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Data Structures
union	joybus_transfer_pak_status_t
	Joybus N64 Transfer Pak Status wrapper. More...

Macros
#define	JOYBUS_ACCESSORY_TRANSFER_BANK_SIZE   0x4000
	Size of Transfer Pak bank area in bytes.
#define	JOYBUS_ACCESSORY_TRANSFER_BANK_MASK   0x3FFF
	Mask for Transfer Pak bank area address.
Joybus N64 accessory address masks
#define	JOYBUS_ACCESSORY_ADDR_MASK_OFFSET   0xFFE0
	Mask for Joybus N64 accessory read/write address offset.
#define	JOYBUS_ACCESSORY_ADDR_MASK_CHECKSUM   0x001F
	Mask for Joybus N64 accessory read/write address checksum.
Joybus N64 accessory known address values
#define	JOYBUS_ACCESSORY_ADDR_LABEL   0x0000
	Controller Pak label address.
#define	JOYBUS_ACCESSORY_ADDR_PROBE   0x8000
	Accessory probe address.
#define	JOYBUS_ACCESSORY_ADDR_RUMBLE_MOTOR   0xC000
	Rumble Pak motor control address.
#define	JOYBUS_ACCESSORY_ADDR_BIO_PULSE   0xC000
	Bio Sensor pulse read address.
#define	JOYBUS_ACCESSORY_ADDR_SNAP_STATE   0xC000
	Pokemon Snap Station state address.
#define	JOYBUS_ACCESSORY_ADDR_TRANSFER_BANK   0xA000
	Transfer Pak bank selection address.
#define	JOYBUS_ACCESSORY_ADDR_TRANSFER_STATUS   0xB000
	Transfer Pak status registers address.
#define	JOYBUS_ACCESSORY_ADDR_TRANSFER_CART   0xC000
	Transfer Pak GB cartridge read/write address.
Joybus N64 accessory probe values
#define	JOYBUS_ACCESSORY_PROBE_ABSENT   0x00
	Absent accessory identifier value.
#define	JOYBUS_ACCESSORY_PROBE_RUMBLE_PAK   0x80
	Rumble Pak identifier value.
#define	JOYBUS_ACCESSORY_PROBE_BIO_SENSOR   0x81
	Bio Sensor identifier value.
#define	JOYBUS_ACCESSORY_PROBE_TRANSFER_PAK_ON   0x84
	Transfer Pak power-on identifier value.
#define	JOYBUS_ACCESSORY_PROBE_SNAP_STATION   0x85
	Pokemon Snap Station identifier value.
#define	JOYBUS_ACCESSORY_PROBE_TRANSFER_PAK_OFF   0xFE
	Transfer Pak power-off identifier value.
Joybus N64 Snap Station state values
#define	JOYBUS_SNAP_STATION_STATE_IDLE   0x00
	Snap Station "Idle" state.
#define	JOYBUS_SNAP_STATION_STATE_PRE_SAVE   0xCC
	Snap Station "Pre-Save" state.
#define	JOYBUS_SNAP_STATION_STATE_POST_SAVE   0x33
	Snap Station "Post-Save" state.
#define	JOYBUS_SNAP_STATION_STATE_RESET_CONSOLE   0x5A
	Snap Station "Reset Console" state.
#define	JOYBUS_SNAP_STATION_STATE_PRE_ROLL   0x01
	Snap Station "Pre-Roll" state.
#define	JOYBUS_SNAP_STATION_STATE_CAPTURE_PHOTO   0x02
	Snap Station "Capture Photo" state.
#define	JOYBUS_SNAP_STATION_STATE_POST_ROLL   0x04
	Snap Station "Post-Roll" state.
#define	JOYBUS_SNAP_STATION_STATE_BUSY   0x08
	Snap Station "Busy" state.
Joybus N64 Transfer Pak status flags
#define	JOYBUS_TRANSFER_PAK_STATUS_ACCESS   (1<<0)
	Transfer Pak "Access" status bit.
#define	JOYBUS_TRANSFER_PAK_STATUS_BOOTING   (1<<2)
	Transfer Pak "Booting" status bit.
#define	JOYBUS_TRANSFER_PAK_STATUS_RESET   (1<<3)
	Transfer Pak "Reset" status bit.
#define	JOYBUS_TRANSFER_PAK_STATUS_CART_PULLED   (1<<6)
	Transfer Pak "Cart Pulled" status bit.
#define	JOYBUS_TRANSFER_PAK_STATUS_POWER   (1<<7)
	Transfer Pak "Powered-On" status bit.

Functions
uint16_t	joybus_accessory_calculate_addr_checksum (uint16_t addr)
	Applies the checksum to a Joybus N64 accessory read/write address.
uint8_t	joybus_accessory_calculate_data_crc (const uint8_t *data)
	Calculates the CRC8 checksum for a Joybus N64 accessory read/write data block.
joybus_accessory_io_status_t	joybus_accessory_compare_data_crc (const uint8_t *data, uint8_t data_crc)
	Calculates the CRC8 checksum for an accessory read/write data block and compares it against the provided checksum.
void	joybus_accessory_read_async (int port, uint16_t addr, joybus_callback_t callback, void *ctx)
	Asynchronously perform a Joybus N64 accessory read command.
void	joybus_accessory_write_async (int port, uint16_t addr, const uint8_t *data, joybus_callback_t callback, void *ctx)
	Asynchronously perform a Joybus N64 accessory write command.

Detailed Description

Joybus accessory internal utilities.

Author

Christopher Bonhage me@ch.nosp@m.rist.nosp@m.opher.nosp@m.bonh.nosp@m.age.c.nosp@m.om