From f3c233776e7314f75b1bf46b14b9e3d90821cf55 Mon Sep 17 00:00:00 2001 From: rob-ng15 <58272847+rob-ng15@users.noreply.github.com> Date: Fri, 20 Mar 2020 11:35:05 +0000 Subject: [PATCH] Use to provide structure sizes --- litex/soc/software/libbase/spisdcard.c | 142 +++++++++++++------------ 1 file changed, 72 insertions(+), 70 deletions(-) diff --git a/litex/soc/software/libbase/spisdcard.c b/litex/soc/software/libbase/spisdcard.c index 7bd9179a..63580907 100644 --- a/litex/soc/software/libbase/spisdcard.c +++ b/litex/soc/software/libbase/spisdcard.c @@ -15,6 +15,7 @@ #include #include +#include #include #include #include @@ -52,8 +53,8 @@ // No return values // // Details from https://openlabpro.com/guide/interfacing-microcontrollers-with-sd-card/ section "SD Commands" -void spi_write_byte(unsigned char char_to_send); -void spi_write_byte(unsigned char char_to_send) +void spi_write_byte(uint8_t char_to_send); +void spi_write_byte(uint8_t char_to_send) { // Place data into MOSI register // Pulse the START bit and set LENGTH=8 @@ -79,11 +80,11 @@ void spi_write_byte(unsigned char char_to_send) // Calling function to determine if the correct response has been received // // Details from https://openlabpro.com/guide/interfacing-microcontrollers-with-sd-card/ section "SD Commands" -unsigned char spi_read_rbyte(void); -unsigned char spi_read_rbyte(void) +uint8_t spi_read_rbyte(void); +uint8_t spi_read_rbyte(void) { int timeout=32; - unsigned char r=0; + uint8_t r=0; // Check if MISO is 0x0xxxxxxx as MSB=0 indicates valid response r = spisdcard_miso_read(); @@ -113,10 +114,10 @@ unsigned char spi_read_rbyte(void) // NOTE no error status as assumed bytes are read via CLK pulses // // Details from https://openlabpro.com/guide/interfacing-microcontrollers-with-sd-card/ section "SD Commands" -unsigned char spi_read_byte(void); -unsigned char spi_read_byte(void) +uint8_t spi_read_byte(void); +uint8_t spi_read_byte(void) { - unsigned char r=0; + uint8_t r=0; spi_write_byte( 0xff ); r = spisdcard_miso_read(); @@ -132,11 +133,12 @@ unsigned char spi_read_byte(void) // Return 0 success, 1 failure // // Details from https://openlabpro.com/guide/interfacing-microcontrollers-with-sd-card/ section "Initializing the SD Card" -unsigned char spi_setspimode(void); -unsigned char spi_setspimode(void) +uint8_t spi_setspimode(void); +uint8_t spi_setspimode(void) { - unsigned int i, r, timeout=32; - + uint32_t r; + int i, timeout=32; + // Initialise SPI mode // set CS to HIGH // Send pulses @@ -174,9 +176,9 @@ unsigned char spi_setspimode(void) // Return 0 success, 1 failure // // Details from https://openlabpro.com/guide/interfacing-microcontrollers-with-sd-card/ section "Initializing the SD Card" -unsigned char spi_sdcard_goidle(void) +uint8_t spi_sdcard_goidle(void) { - unsigned char r; // Response from SD CARD + uint8_t r; // Response from SD CARD int i, timeout; // TIMEOUT loop to send CMD55+ACMD41 repeatedly r = spi_setspimode(); // Set SD CARD to SPI mode @@ -228,7 +230,7 @@ unsigned char spi_sdcard_goidle(void) r=spi_read_byte(); // CMD16 - Set SD CARD block size to 512 - Sector Size for the SD CARD - // Command Sequence is DUMMY=0xff (512 as unsigned int = 0x00000200) 0x00 0x00 0x02 0x00 CRC=0xff + // Command Sequence is DUMMY=0xff CMD16=0x50 (512 as unsigned 32bit = 0x00000200) 0x00 0x00 0x02 0x00 CRC=0xff // Expected R1 response is 0x00 indicating SD CARD is READY spi_write_byte( 0xff ); spi_write_byte( 0x50 ); spi_write_byte( 0x00 ); spi_write_byte( 0x00 ); spi_write_byte( 0x02 ); spi_write_byte( 0x00 ); spi_write_byte( 0xff ); r=spi_read_rbyte(); @@ -251,11 +253,11 @@ unsigned char spi_sdcard_goidle(void) // Return 0 success, 1 failure // // Details from https://openlabpro.com/guide/interfacing-microcontrollers-with-sd-card/ section "Read/Write SD Card" -unsigned char readSector(unsigned int sectorNumber, unsigned char *storage); -unsigned char readSector(unsigned int sectorNumber, unsigned char *storage) +uint8_t readSector(uint32_t sectorNumber, uint8_t *storage); +uint8_t readSector(uint32_t sectorNumber, uint8_t *storage) { - unsigned int n,timeout; // Number of bytes loop, timeout loop awaiting response bytes - unsigned char r; // Response bytes from SD CARD + int n, timeout; // Number of bytes loop, timeout loop awaiting response bytes + uint8_t r; // Response bytes from SD CARD // CMD17 - Read Block // Command Sequence is DUMMY=0xff CMD17=0x51 SECTORNUMBER (32bit UNSIGNED as bits 32-25,24-17, 16-9, 8-1) CRC=0xff @@ -290,41 +292,41 @@ unsigned char readSector(unsigned int sectorNumber, unsigned char *storage) // Structure to store SD CARD partition table typedef struct { - unsigned char first_byte; - unsigned char start_chs[3]; - unsigned char partition_type; - unsigned char end_chs[3]; - unsigned int start_sector; - unsigned int length_sectors; + uint8_t first_byte; + uint8_t start_chs[3]; + uint8_t partition_type; + uint8_t end_chs[3]; + uint32_t start_sector; + uint32_t length_sectors; } __attribute((packed)) PartitionTable; PartitionTable sdCardPartition; // Structure to store SD CARD FAT16 Boot Sector (boot code is ignored, provides layout of the FAT16 partition on the SD CARD) typedef struct { - unsigned char jmp[3]; - char oem[8]; - unsigned short sector_size; - unsigned char sectors_per_cluster; - unsigned short reserved_sectors; - unsigned char number_of_fats; - unsigned short root_dir_entries; - unsigned short total_sectors_short; // if zero, later field is used - unsigned char media_descriptor; - unsigned short fat_size_sectors; - unsigned short sectors_per_track; - unsigned short number_of_heads; - unsigned int hidden_sectors; - unsigned int total_sectors_long; - - unsigned char drive_number; - unsigned char current_head; - unsigned char boot_signature; - unsigned int volume_id; - char volume_label[11]; - char fs_type[8]; - char boot_code[448]; - unsigned short boot_sector_signature; + uint8_t jmp[3]; + uint8_t oem[8]; + uint16_t sector_size; + uint8_t sectors_per_cluster; + uint16_t reserved_sectors; + uint8_t number_of_fats; + uint16_t root_dir_entries; + uint16_t total_sectors_short; // if zero, later field is used + uint8_t media_descriptor; + uint16_t fat_size_sectors; + uint16_t sectors_per_track; + uint16_t number_of_heads; + uint32_t hidden_sectors; + uint32_t total_sectors_long; + + uint8_t drive_number; + uint8_t current_head; + uint8_t boot_signature; + uint32_t volume_id; + uint8_t volume_label[11]; + uint8_t fs_type[8]; + uint8_t boot_code[448]; + uint16_t boot_sector_signature; } __attribute((packed)) Fat16BootSector; Fat16BootSector sdCardFatBootSector; @@ -332,27 +334,27 @@ Fat16BootSector sdCardFatBootSector; // Structure to store SD CARD FAT16 Root Directory Entries // Allocated to MAIN RAM - hence pointer typedef struct { - unsigned char filename[8]; - unsigned char ext[3]; - unsigned char attributes; - unsigned char reserved[10]; - unsigned short modify_time; - unsigned short modify_date; - unsigned short starting_cluster; - unsigned int file_size; + uint8_t filename[8]; + uint8_t ext[3]; + uint8_t attributes; + uint8_t reserved[10]; + uint16_t modify_time; + uint16_t modify_date; + uint16_t starting_cluster; + uint32_t file_size; } __attribute((packed)) Fat16Entry; Fat16Entry *sdCardFat16RootDir; // Structure to store SD CARD FAT16 Entries -// Array of UNSIGNED SHORTS (16bit integers) -unsigned short *sdCardFatTable; +// Array of uint16_tS (16bit integers) +uint16_t *sdCardFatTable; // Calculated sector numbers on the SD CARD for the FAT16 Entries and ROOT DIRECTORY -unsigned int fatSectorStart, rootDirSectorStart; +uint32_t fatSectorStart, rootDirSectorStart; // Storage for SECTOR read from SD CARD -unsigned char sdCardSector[512]; +uint8_t sdCardSector[512]; // SPI_SDCARD_READMBR // Function exposed to BIOS to retrieve FAT16 partition details, FAT16 Entry Table, FAT16 Root Directory @@ -363,7 +365,7 @@ unsigned char sdCardSector[512]; // Return 0 success, 1 failure // // Details from https://codeandlife.com/2012/04/02/simple-fat-and-sd-tutorial-part-1/ -unsigned char spi_sdcard_readMBR(void) +uint8_t spi_sdcard_readMBR(void) { int i, n; @@ -444,13 +446,13 @@ unsigned char spi_sdcard_readMBR(void) // Read in FAT16 File Allocation Table, array of 16bit unsinged integers // Calculate Storage from TOP of MAIN RAM - sdCardFatTable = (unsigned short *)(MAIN_RAM_BASE+MAIN_RAM_SIZE-sdCardFatBootSector.sector_size*sdCardFatBootSector.fat_size_sectors); + sdCardFatTable = (uint16_t *)(MAIN_RAM_BASE+MAIN_RAM_SIZE-sdCardFatBootSector.sector_size*sdCardFatBootSector.fat_size_sectors); printf("sdCardFatTable = 0x%08x Reading Fat16 Table (%d Sectors Long)\n\n",sdCardFatTable,sdCardFatBootSector.fat_size_sectors); // Calculate Start of FAT16 File Allocation Table (start of partition plus reserved sectors) fatSectorStart=sdCardPartition.start_sector+sdCardFatBootSector.reserved_sectors; for(n=0; nsdCardFatBootSector.sector_size) { - if( readSector(clusterSectorStart+sector,(unsigned char *)address) == FAILURE ) { + if( readSector(clusterSectorStart+sector,(uint8_t *)address) == FAILURE ) { printf("Read Error\n"); return FAILURE; } @@ -571,7 +573,7 @@ unsigned char spi_sdcard_readFile(char *filename, char *ext, unsigned long addre printf("Read Error\n"); return FAILURE; } - memcpy((unsigned char *)address, sdCardSector, bytesRemaining); + memcpy((uint8_t *)address, sdCardSector, bytesRemaining); bytesRemaining=0; } } -- 2.30.2