SampleMegaSDMenu/comms.h at master · Terraonion-dev/SampleMegaSDMenu · GitHub

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#define HWREGL(addr)	(*((volatile unsigned int *) (addr)))
#define HWREG(addr)	(*((volatile unsigned short *) (addr)))
#define HWREGB(addr)	(*((volatile unsigned char *) (addr)))


#define COMM_COMMAND_PORT	0x03F7FE
#define COMM_RESULT_PORT	0x03F7FC
#define COMM_MAGIC_PORT		0x03F7FA
#define COMM_ID1		0x03F7F8
#define COMM_ID2		0x03F7F6
#define COMM_RAM		0x03F800


#define OPEN_COMMANDS()		HWREG(COMM_MAGIC_PORT) = 0xCD54
#define CLOSE_COMMANDS()	HWREG(COMM_MAGIC_PORT) = 0x0000
#define SEND_COMMAND(__command__, __data__)  HWREG(COMM_COMMAND_PORT) = ((__command__)<<8)|(__data__)
#define WAIT_COMMAND_END()	while(HWREGB(COMM_COMMAND_PORT) != 0 && HWREGB(COMM_COMMAND_PORT) != 0xFF)
#define GET_RESPONSE()		HWREGB(COMM_RESULT_PORT)
//#define SEND_RAM_COMMAND(__command__, __data__)
#define WAIT_RAM_COMMAND_END()	{ int nn = 0; while(HWREGB(COMM_ID1) == 'T' && HWREGB(COMM_ID1 + 1) == 'E' && HWREGB(COMM_ID2) == 'R' && HWREGB(COMM_ID2 + 1) == 'A') { ++nn; if(nn > 10) break; }  }\
								while(1) {  if(HWREGB(COMM_ID1) != 'T' || HWREGB(COMM_ID1 + 1) != 'E' || HWREGB(COMM_ID2) != 'R' || HWREGB(COMM_ID2 + 1) != 'A') continue; \
									OPEN_COMMANDS(); \
									if(HWREGB(COMM_COMMAND_PORT) != 0 && HWREGB(COMM_COMMAND_PORT) != 0xFF) continue; \
									if(HWREGB(COMM_ID1) != 'T' || HWREGB(COMM_ID1 + 1) != 'E' || HWREGB(COMM_ID2) != 'R' || HWREGB(COMM_ID2 + 1) != 'A') continue; \
									break; }


enum MCU_Commands {
	MCU_CONTROL_IDLE = 0x00,

	MCU_USER_COMMAND_GETVERSION = 0x10, MCU_USER_COMMAND_PLAYTRACK = 0x11, MCU_USER_COMMAND_PLAYTRACKLOOP = 0x12, MCU_USER_COMMAND_PAUSE = 0x13, MCU_USER_COMMAND_RESUME = 0x14,
	MCU_USER_COMMAND_VOLUME = 0x15, MCU_USER_COMMAND_STATUS = 0x16,

	MCU_CONTROL_COMMAND_LOADDIR = 0x82, MCU_CONTROL_COMMAND_LOADGAME = 0x83, MCU_CONTROL_COMMAND_CHANGEDIR = 0x84, MCU_CONTROL_COMMAND_VERIFYGAME = 0x85,
	MCU_CONTROL_COMMAND_GETLASTNAME = 0x87, MCU_CONTROL_BOOTSTRAP_LOADLASTGAME = 0x89,
};


#define GAMESTARTADDRESS	0x20000
#define SCREENSHOTSTARTADDRESS	0x200000

#define SOUNDREGISTERS	0x030001
#define SOUNDDATASTART	0x032001