diff options
Diffstat (limited to '')
| -rw-r--r-- | c/src/lib/libbsp/arm/nds/libfat/source/disc_io/io_nmmc.c | 60 |
1 files changed, 30 insertions, 30 deletions
diff --git a/c/src/lib/libbsp/arm/nds/libfat/source/disc_io/io_nmmc.c b/c/src/lib/libbsp/arm/nds/libfat/source/disc_io/io_nmmc.c index 913594bf83..d7a99320f3 100644 --- a/c/src/lib/libbsp/arm/nds/libfat/source/disc_io/io_nmmc.c +++ b/c/src/lib/libbsp/arm/nds/libfat/source/disc_io/io_nmmc.c @@ -9,10 +9,10 @@ Submit bug reports for this device to the NeoFlash forums See license.txt for license details. - + 2006-02-09 - www.neoflash.com: * First stable release - + 2006-02-13 - Chishm * Added ReadMK2Config function * Added read config test to init function so no unnecessary card commands are sent @@ -83,7 +83,7 @@ static void _Neo_WriteMK2Config(u8 config) { _Neo_EnableEEPROM(false); } -static u8 _Neo_ReadMK2Config(void) +static u8 _Neo_ReadMK2Config(void) { u8 config; _Neo_EnableEEPROM(true); @@ -100,7 +100,7 @@ static u8 _Neo_ReadMK2Config(void) u8 selectMMC_command [8] = {0xFF, 0x00, 0x6A, 0xDF, 0x37, 0x59, 0x33, 0xA3}; -static void _Neo_SelectMMC (u8 dataByte) +static void _Neo_SelectMMC (u8 dataByte) { selectMMC_command[1] = dataByte; // Set enable / disable byte cardWriteCommand (selectMMC_command); // Send "5. Use the EEPROM CS to access the MK2 MMC/SD card" @@ -150,12 +150,12 @@ static bool _Neo_CheckMMCResponse( u8 response, u8 mask ) { static bool _Neo_InitMMC(void) { _Neo_MK2GameMode(); _Neo_WriteMK2Config( MK2_CONFIG_ZIP_RAM_CLOSE | MK2_CONFIG_GAME_FLASH_CLOSE); - + // Make sure the configuration was accepted if (_Neo_ReadMK2Config() != (MK2_CONFIG_ZIP_RAM_CLOSE | MK2_CONFIG_GAME_FLASH_CLOSE)) { return false; // If not, then it wasn't initialised properly } - + return true; } @@ -163,7 +163,7 @@ static bool _Neo_InitMMC(void) { bool _NMMC_isInserted(void) { int i; - + _Neo_EnableMMC( true ); // Open SPI port to MMC card _Neo_SendMMCCommand(MMC_SEND_CSD, 0); if( _Neo_CheckMMCResponse( 0x00, 0xFF ) == false ) { // Make sure no errors occured @@ -179,13 +179,13 @@ bool _NMMC_isInserted(void) { for (i = 0; i < 28; i++) { _Neo_SPI(0xff); } - + return true; } bool _NMMC_clearStatus (void) { u32 i; - + _Neo_EnableMMC( true ); // Open SPI port to MMC card for (i = 0; i < 10; i++) { _Neo_SPI(0xFF); // Send 10 0xFF bytes to MMC card @@ -220,14 +220,14 @@ bool _NMMC_startUp(void) { return false; } _Neo_EnableMMC( true ); // Open SPI port to MMC card - + // Set block length _Neo_SendMMCCommand(MMC_SET_BLOCKLEN, BYTES_PER_READ ); if( _Neo_CheckMMCResponse( 0x00, 0xFF ) == false ) { // Make sure no errors occured _Neo_EnableMMC( false ); return false; } - + // Check if we can use a higher SPI frequency _Neo_SendMMCCommand(MMC_SEND_CSD, 0); if( _Neo_CheckMMCResponse( 0x00, 0xFF ) == false ) { // Make sure no errors occured @@ -248,76 +248,76 @@ bool _NMMC_startUp(void) { if ((transSpeed & 0xf0) >= 0x30) { _NMMC_spi_freq = 0; } - + _Neo_EnableMMC( false ); - + return true; -} +} -bool _NMMC_writeSectors (u32 sector, u32 totalSecs, const void* buffer) +bool _NMMC_writeSectors (u32 sector, u32 totalSecs, const void* buffer) { u32 i; u8 *p=(u8*)buffer; - + sector *= BYTES_PER_READ; - + _Neo_EnableMMC( true ); // Open SPI port to MMC card _Neo_SendMMCCommand( 25, sector ); if( _Neo_CheckMMCResponse( 0x00, 0xFF ) == false ) { // Make sure no errors occured _Neo_EnableMMC( false ); return false; } - + while (totalSecs--) { _Neo_SPI( 0xFC ); // Send Start Block token for( i = 0; i < BYTES_PER_READ; i++ ) // Send a block of data _Neo_SPI( *p++ ); _Neo_SPI( 0xFF ); // Send fake CRC16 _Neo_SPI( 0xFF ); // Send fake CRC16 - + if( ( _Neo_SPI( 0xFF ) & 0x0F ) != 0x05 ) { // Make sure the block was accepted _Neo_EnableMMC( false ); return false; } while( _Neo_SPI( 0xFF ) == 0x00 ); // Wait for the block to be written } - + // Stop transmission block _Neo_SPI( 0xFD ); // Send Stop Transmission Block token for( i = 0; i < BYTES_PER_READ; i++ ) // Send a block of fake data _Neo_SPI( 0xFF ); _Neo_SPI( 0xFF ); // Send fake CRC16 _Neo_SPI( 0xFF ); // Send fake CRC16 - + _Neo_SPI (0xFF); // Send 8 clocks while( _Neo_SPI( 0xFF ) == 0x00 ); // Wait for the busy signal to clear - - for ( i = 0; i < 0x10; i++) { + + for ( i = 0; i < 0x10; i++) { _Neo_SPI (0xFF); // Send clocks for the MMC card to finish what it's doing } - + _Neo_EnableMMC( false ); // Close SPI port to MMC card return true; } -bool _NMMC_readSectors (u32 sector, u32 totalSecs, void* buffer) +bool _NMMC_readSectors (u32 sector, u32 totalSecs, void* buffer) { u32 i; u8 *p=(u8*)buffer; - + sector *= BYTES_PER_READ; - + _Neo_EnableMMC( true ); // Open SPI port to MMC card - + while (totalSecs--) { _Neo_SendMMCCommand(MMC_READ_BLOCK, sector ); if( _Neo_CheckMMCResponse( 0x00, 0xFF ) == false ) { // Make sure no errors occured _Neo_EnableMMC( false ); return false; } - + if( _Neo_CheckMMCResponse( 0xFE, 0xFF ) == false ) { // Check for Start Block token _Neo_EnableMMC( false ); return false; @@ -328,7 +328,7 @@ bool _NMMC_readSectors (u32 sector, u32 totalSecs, void* buffer) _Neo_SPI( 0xFF ); // Ignore CRC16 sector += BYTES_PER_READ; } - + _Neo_EnableMMC( false ); // Close SPI port to MMC card return true; } |