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SD card is sucessfully read in DS mode!

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This commit is contained in:
RocketRobz 2020-07-14 18:03:29 -06:00
parent 1223111a98
commit 38f80194d4
2 changed files with 103 additions and 2 deletions
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4
arm9/source/driveOperations.cpp
View File

@ -153,9 +153,9 @@ TWL_CODE void nandUnmount(void) {
}
bool sdMount(void) {
extern const DISC_INTERFACE __io_dsisd;
extern const DISC_INTERFACE __my_io_dsisd;
fatMountSimple("sd", &__io_dsisd);
fatMountSimple("sd", &__my_io_dsisd);
if (sdFound()) {
sdMountedDone = true;
fatGetVolumeLabel("sd", sdLabel);

101
arm9/source/my_sd.c Normal file
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@ -0,0 +1,101 @@
#include <nds/disc_io.h>
#include <nds/fifocommon.h>
#include <nds/fifomessages.h>
#include <nds/system.h>
#include <nds/arm9/cache.h>
//---------------------------------------------------------------------------------
bool my_sdio_Startup() {
//---------------------------------------------------------------------------------
fifoSendValue32(FIFO_SDMMC,SDMMC_HAVE_SD);
while(!fifoCheckValue32(FIFO_SDMMC));
int result = fifoGetValue32(FIFO_SDMMC);
if(result==0) return false;
fifoSendValue32(FIFO_SDMMC,SDMMC_SD_START);
fifoWaitValue32(FIFO_SDMMC);
result = fifoGetValue32(FIFO_SDMMC);
return result == 0;
}
//---------------------------------------------------------------------------------
bool my_sdio_IsInserted() {
//---------------------------------------------------------------------------------
fifoSendValue32(FIFO_SDMMC,SDMMC_SD_IS_INSERTED);
fifoWaitValue32(FIFO_SDMMC);
int result = fifoGetValue32(FIFO_SDMMC);
return result == 1;
}
//---------------------------------------------------------------------------------
bool my_sdio_ReadSectors(sec_t sector, sec_t numSectors,void* buffer) {
//---------------------------------------------------------------------------------
FifoMessage msg;
DC_FlushRange(buffer,numSectors * 512);
msg.type = SDMMC_SD_READ_SECTORS;
msg.sdParams.startsector = sector;
msg.sdParams.numsectors = numSectors;
msg.sdParams.buffer = buffer;
fifoSendDatamsg(FIFO_SDMMC, sizeof(msg), (u8*)&msg);
fifoWaitValue32(FIFO_SDMMC);
int result = fifoGetValue32(FIFO_SDMMC);
return result == 0;
}
//---------------------------------------------------------------------------------
bool my_sdio_WriteSectors(sec_t sector, sec_t numSectors,const void* buffer) {
//---------------------------------------------------------------------------------
FifoMessage msg;
DC_FlushRange(buffer,numSectors * 512);
msg.type = SDMMC_SD_WRITE_SECTORS;
msg.sdParams.startsector = sector;
msg.sdParams.numsectors = numSectors;
msg.sdParams.buffer = (void*)buffer;
fifoSendDatamsg(FIFO_SDMMC, sizeof(msg), (u8*)&msg);
fifoWaitValue32(FIFO_SDMMC);
int result = fifoGetValue32(FIFO_SDMMC);
return result == 0;
}
//---------------------------------------------------------------------------------
bool my_sdio_ClearStatus() {
//---------------------------------------------------------------------------------
return true;
}
//---------------------------------------------------------------------------------
bool my_sdio_Shutdown() {
//---------------------------------------------------------------------------------
return true;
}
const DISC_INTERFACE __my_io_dsisd = {
DEVICE_TYPE_DSI_SD,
FEATURE_MEDIUM_CANREAD | FEATURE_MEDIUM_CANWRITE,
(FN_MEDIUM_STARTUP)&my_sdio_Startup,
(FN_MEDIUM_ISINSERTED)&my_sdio_IsInserted,
(FN_MEDIUM_READSECTORS)&my_sdio_ReadSectors,
(FN_MEDIUM_WRITESECTORS)&my_sdio_WriteSectors,
(FN_MEDIUM_CLEARSTATUS)&my_sdio_ClearStatus,
(FN_MEDIUM_SHUTDOWN)&my_sdio_Shutdown
};