[APM32F4] 【APM32F411V开发板测评】+SPI_SDCARD+Fatfs简单测试

/**



******************************************************************************



* [url=home.php?mod=space&uid=288409]@file[/url] user_diskio_spi.c



* [url=home.php?mod=space&uid=247401]@brief[/url] This file contains the implementation of the user_diskio_spi FatFs



* driver.



******************************************************************************



* Portions copyright (C) 2014, ChaN, all rights reserved.



* Portions copyright (C) 2017, kiwih, all rights reserved.



*



* This software is a free software and there is NO WARRANTY.



* No restriction on use. You can use, modify and redistribute it for



* personal, non-profit or commercial products UNDER YOUR RESPONSIBILITY.



* Redistributions of source code must retain the above copyright notice.



*



******************************************************************************



*/



//This code was ported by kiwih from a copywrited (C) library written by ChaN



//available at http://elm-chan.org/fsw/ff/ffsample.zip



//(text at http://elm-chan.org/fsw/ff/00index_e.html)



//This file provides the FatFs driver functions and SPI code required to manage



//an SPI-connected MMC or compatible SD card with FAT



//It is designed to be wrapped by a cubemx generated user_diskio.c file.



#include "stm32f4xx_hal.h" /* Provide the low-level HAL functions */



#include "user_diskio_spi.h"



//Make sure you set #define SD_SPI_HANDLE as some hspix in main.h



//Make sure you set #define SD_CS_GPIO_Port as some GPIO port in main.h



//Make sure you set #define SD_CS_Pin as some GPIO pin in main.h



extern SPI_HandleTypeDef hspi2;



/* Function prototypes */



//(Note that the _256 is used as a mask to clear the prescalar bits as it provides binary 111 in the correct position)



#define FCLK_SLOW() { MODIFY_REG(hspi2.Instance->CR1, SPI_BAUDRATEPRESCALER_256, SPI_BAUDRATEPRESCALER_128); }/* Set SCLK = slow, approx 280 KBits/s*/



#define FCLK_FAST() { MODIFY_REG(hspi2.Instance->CR1, SPI_BAUDRATEPRESCALER_256, SPI_BAUDRATEPRESCALER_8); }/* Set SCLK = fast, approx 4.5 MBits/s */



#define CS_HIGH(){HAL_GPIO_WritePin(SD_CS_GPIO_Port, SD_CS_Pin, GPIO_PIN_SET);}



#define CS_LOW(){HAL_GPIO_WritePin(SD_CS_GPIO_Port, SD_CS_Pin, GPIO_PIN_RESET);}



/*--------------------------------------------------------------------------



Module Private Functions



---------------------------------------------------------------------------*/



/* MMC/SD command */



#define CMD0(0)/* GO_IDLE_STATE */



#define CMD1(1)/* SEND_OP_COND (MMC) */



#defineACMD41(0x80+41)/* SEND_OP_COND (SDC) */



#define CMD8(8)/* SEND_IF_COND */



#define CMD9(9)/* SEND_CSD */



#define CMD10(10)/* SEND_CID */



#define CMD12(12)/* STOP_TRANSMISSION */



#define ACMD13(0x80+13)/* SD_STATUS (SDC) */



#define CMD16(16)/* SET_BLOCKLEN */



#define CMD17(17)/* READ_SINGLE_BLOCK */



#define CMD18(18)/* READ_MULTIPLE_BLOCK */



#define CMD23(23)/* SET_BLOCK_COUNT (MMC) */



#defineACMD23(0x80+23)/* SET_WR_BLK_ERASE_COUNT (SDC) */



#define CMD24(24)/* WRITE_BLOCK */



#define CMD25(25)/* WRITE_MULTIPLE_BLOCK */



#define CMD32(32)/* ERASE_ER_BLK_START */



#define CMD33(33)/* ERASE_ER_BLK_END */



#define CMD38(38)/* ERASE */



#define CMD55(55)/* APP_CMD */



#define CMD58(58)/* READ_OCR */



/* MMC card type flags (MMC_GET_TYPE) */



#define CT_MMC0x01/* MMC ver 3 */



#define CT_SD10x02/* SD ver 1 */



#define CT_SD20x04/* SD ver 2 */



#define CT_SDC(CT_SD1|CT_SD2)/* SD */



#define CT_BLOCK0x08/* Block addressing */



static volatile



DSTATUS Stat = STA_NOINIT;/* Physical drive status */



static



BYTE CardType;/* Card type flags */



uint32_t spiTimerTickStart;



uint32_t spiTimerTickDelay;



void SPI_Timer_On(uint32_t waitTicks) {



spiTimerTickStart = HAL_GetTick();



spiTimerTickDelay = waitTicks;



}



uint8_t SPI_Timer_Status() {



return ((HAL_GetTick() - spiTimerTickStart) < spiTimerTickDelay);



}



/*-----------------------------------------------------------------------*/



/* SPI controls (Platform dependent) */



/*-----------------------------------------------------------------------*/



/* Exchange a byte */



static



BYTE xchg_spi (



BYTE dat/* Data to send */



)



{



BYTE rxDat;



HAL_SPI_TransmitReceive(&hspi2, &dat, &rxDat, 1, 1000);



return rxDat;



}



/* Receive multiple byte */



static



void rcvr_spi_multi (



BYTE *buff,/* Pointer to data buffer */



UINT btr/* Number of bytes to receive (even number) */



)



{



for(UINT i=0; i<btr; i++) {



*(buff+i) = xchg_spi(0xFF);



}



}



#if _USE_WRITE



/* Send multiple byte */



static



void xmit_spi_multi (



const BYTE *buff,/* Pointer to the data */



UINT btx/* Number of bytes to send (even number) */



)



{



for(UINT i=0; i<btx; i++) {



xchg_spi(*(buff+i));



}



}



#endif



/*-----------------------------------------------------------------------*/



/* Wait for card ready */



/*-----------------------------------------------------------------------*/



static



int wait_ready (/* 1:Ready, 0:Timeout */



UINT wt/* Timeout [ms] */



)



{



BYTE d;



//wait_ready needs its own timer, unfortunately, so it can't use the



//spi_timer functions



uint32_t waitSpiTimerTickStart;



uint32_t waitSpiTimerTickDelay;



waitSpiTimerTickStart = HAL_GetTick();



waitSpiTimerTickDelay = (uint32_t)wt;



do {



d = xchg_spi(0xFF);



/* This loop takes a time. Insert rot_rdq() here for multitask envilonment. */



} while (d != 0xFF && ((HAL_GetTick() - waitSpiTimerTickStart) < waitSpiTimerTickDelay));/* Wait for card goes ready or timeout */



return (d == 0xFF) ? 1 : 0;



}



/*-----------------------------------------------------------------------*/



/* Despiselect card and release SPI */



/*-----------------------------------------------------------------------*/



static



void despiselect (void)



{



CS_HIGH();/* Set CS# high */



xchg_spi(0xFF);/* Dummy clock (force DO hi-z for multiple slave SPI) */



}



/*-----------------------------------------------------------------------*/



/* Select card and wait for ready */



/*-----------------------------------------------------------------------*/



static



int spiselect (void)/* 1:OK, 0:Timeout */



{



CS_LOW();/* Set CS# low */



xchg_spi(0xFF);/* Dummy clock (force DO enabled) */



if (wait_ready(500)) return 1;/* Wait for card ready */



despiselect();



return 0;/* Timeout */



}



/*-----------------------------------------------------------------------*/



/* Receive a data packet from the MMC */



/*-----------------------------------------------------------------------*/



static



int rcvr_datablock (/* 1:OK, 0:Error */



BYTE *buff,/* Data buffer */



UINT btr/* Data block length (byte) */



)



{



BYTE token;



SPI_Timer_On(200);



do {/* Wait for DataStart token in timeout of 200ms */



token = xchg_spi(0xFF);



/* This loop will take a time. Insert rot_rdq() here for multitask envilonment. */



} while ((token == 0xFF) && SPI_Timer_Status());



if(token != 0xFE) return 0;/* Function fails if invalid DataStart token or timeout */



rcvr_spi_multi(buff, btr);/* Store trailing data to the buffer */



xchg_spi(0xFF); xchg_spi(0xFF);/* Discard CRC */



return 1;/* Function succeeded */



}



/*-----------------------------------------------------------------------*/



/* Send a data packet to the MMC */



/*-----------------------------------------------------------------------*/



#if _USE_WRITE



static



int xmit_datablock (/* 1:OK, 0:Failed */



const BYTE *buff,/* Ponter to 512 byte data to be sent */



BYTE token/* Token */



)



{



BYTE resp;



if (!wait_ready(500)) return 0;/* Wait for card ready */



xchg_spi(token);/* Send token */



if (token != 0xFD) {/* Send data if token is other than StopTran */



xmit_spi_multi(buff, 512);/* Data */



xchg_spi(0xFF); xchg_spi(0xFF);/* Dummy CRC */



resp = xchg_spi(0xFF);/* Receive data resp */



if ((resp & 0x1F) != 0x05) return 0;/* Function fails if the data packet was not accepted */



}



return 1;



}



#endif



/*-----------------------------------------------------------------------*/



/* Send a command packet to the MMC */



/*-----------------------------------------------------------------------*/



static



BYTE send_cmd (/* Return value: R1 resp (bit7==1:Failed to send) */



BYTE cmd,/* Command index */



DWORD arg/* Argument */



)



{



BYTE n, res;



if (cmd & 0x80) {/* Send a CMD55 prior to ACMD<n> */



cmd &= 0x7F;



res = send_cmd(CMD55, 0);



if (res > 1) return res;



}



/* Select the card and wait for ready except to stop multiple block read */



if (cmd != CMD12) {



despiselect();



if (!spiselect()) return 0xFF;



}



/* Send command packet */



xchg_spi(0x40 | cmd);/* Start + command index */



xchg_spi((BYTE)(arg >> 24));/* Argument[31..24] */



xchg_spi((BYTE)(arg >> 16));/* Argument[23..16] */



xchg_spi((BYTE)(arg >> 8));/* Argument[15..8] */



xchg_spi((BYTE)arg);/* Argument[7..0] */



n = 0x01;/* Dummy CRC + Stop */



if (cmd == CMD0) n = 0x95;/* Valid CRC for CMD0(0) */



if (cmd == CMD8) n = 0x87;/* Valid CRC for CMD8(0x1AA) */



xchg_spi(n);



/* Receive command resp */



if (cmd == CMD12) xchg_spi(0xFF);/* Diacard following one byte when CMD12 */



n = 10;/* Wait for response (10 bytes max) */



do {



res = xchg_spi(0xFF);



} while ((res & 0x80) && --n);



return res;/* Return received response */



}



/*--------------------------------------------------------------------------



Public FatFs Functions (wrapped in user_diskio.c)



---------------------------------------------------------------------------*/



//The following functions are defined as inline because they aren't the functions that



//are passed to FatFs - they are wrapped by autogenerated (non-inline) cubemx template



//code.



//If you do not wish to use cubemx, remove the "inline" from these functions here



//and in the associated .h



/*-----------------------------------------------------------------------*/



/* Initialize disk drive */



/*-----------------------------------------------------------------------*/



inline DSTATUS USER_SPI_initialize (



BYTE drv/* Physical drive number (0) */



)



{



BYTE n, cmd, ty, ocr[4];



if (drv != 0) return STA_NOINIT;/* Supports only drive 0 */



//assume SPI already init init_spi();/* Initialize SPI */



if (Stat & STA_NODISK) return Stat;/* Is card existing in the soket? */



//FCLK_SLOW();//低速模式



//FCLK_FAST();//快速模式



for (n = 10; n; n--) xchg_spi(0xFF);/* Send 80 dummy clocks */



ty = 0;



if (send_cmd(CMD0, 0) == 1) {/* Put the card SPI/Idle state */



SPI_Timer_On(1000);/* Initialization timeout = 1 sec */



if (send_cmd(CMD8, 0x1AA) == 1) {/* SDv2? */



for (n = 0; n < 4; n++) ocr[n] = xchg_spi(0xFF);/* Get 32 bit return value of R7 resp */



if (ocr[2] == 0x01 && ocr[3] == 0xAA) {/* Is the card supports vcc of 2.7-3.6V? */



while (SPI_Timer_Status() && send_cmd(ACMD41, 1UL << 30)) ;/* Wait for end of initialization with ACMD41(HCS) */



if (SPI_Timer_Status() && send_cmd(CMD58, 0) == 0) {/* Check CCS bit in the OCR */



for (n = 0; n < 4; n++) ocr[n] = xchg_spi(0xFF);



ty = (ocr[0] & 0x40) ? CT_SD2 | CT_BLOCK : CT_SD2;/* Card id SDv2 */



}



}



} else {/* Not SDv2 card */



if (send_cmd(ACMD41, 0) <= 1) {/* SDv1 or MMC? */



ty = CT_SD1; cmd = ACMD41;/* SDv1 (ACMD41(0)) */



} else {



ty = CT_MMC; cmd = CMD1;/* MMCv3 (CMD1(0)) */



}



while (SPI_Timer_Status() && send_cmd(cmd, 0)) ;/* Wait for end of initialization */



if (!SPI_Timer_Status() || send_cmd(CMD16, 512) != 0)/* Set block length: 512 */



ty = 0;



}



}



CardType = ty;/* Card type */



despiselect();



if (ty) {/* OK */



FCLK_FAST();/* Set fast clock */



Stat &= ~STA_NOINIT;/* Clear STA_NOINIT flag */



} else {/* Failed */



Stat = STA_NOINIT;



}



return Stat;



}



/*-----------------------------------------------------------------------*/



/* Get disk status */



/*-----------------------------------------------------------------------*/



inline DSTATUS USER_SPI_status (



BYTE drv/* Physical drive number (0) */



)



{



if (drv) return STA_NOINIT;/* Supports only drive 0 */



return Stat;/* Return disk status */



}



/*-----------------------------------------------------------------------*/



/* Read sector(s) */



/*-----------------------------------------------------------------------*/



inline DRESULT USER_SPI_read (



BYTE drv,/* Physical drive number (0) */



BYTE *buff,/* Pointer to the data buffer to store read data */



DWORD sector,/* Start sector number (LBA) */



UINT count/* Number of sectors to read (1..128) */



)



{



if (drv || !count) return RES_PARERR;/* Check parameter */



if (Stat & STA_NOINIT) return RES_NOTRDY;/* Check if drive is ready */



if (!(CardType & CT_BLOCK)) sector *= 512;/* LBA ot BA conversion (byte addressing cards) */



if (count == 1) {/* Single sector read */



if ((send_cmd(CMD17, sector) == 0)/* READ_SINGLE_BLOCK */



&& rcvr_datablock(buff, 512)) {



count = 0;



}



}



else {/* Multiple sector read */



if (send_cmd(CMD18, sector) == 0) {/* READ_MULTIPLE_BLOCK */



do {



if (!rcvr_datablock(buff, 512)) break;



buff += 512;



} while (--count);



send_cmd(CMD12, 0);/* STOP_TRANSMISSION */



}



}



despiselect();



return count ? RES_ERROR : RES_OK;/* Return result */



}



/*-----------------------------------------------------------------------*/



/* Write sector(s) */



/*-----------------------------------------------------------------------*/



#if _USE_WRITE



inline DRESULT USER_SPI_write (



BYTE drv,/* Physical drive number (0) */



const BYTE *buff,/* Ponter to the data to write */



DWORD sector,/* Start sector number (LBA) */



UINT count/* Number of sectors to write (1..128) */



)



{



if (drv || !count) return RES_PARERR;/* Check parameter */



if (Stat & STA_NOINIT) return RES_NOTRDY;/* Check drive status */



if (Stat & STA_PROTECT) return RES_WRPRT;/* Check write protect */



if (!(CardType & CT_BLOCK)) sector *= 512;/* LBA ==> BA conversion (byte addressing cards) */



if (count == 1) {/* Single sector write */



if ((send_cmd(CMD24, sector) == 0)/* WRITE_BLOCK */



&& xmit_datablock(buff, 0xFE)) {



count = 0;



}



}



else {/* Multiple sector write */



if (CardType & CT_SDC) send_cmd(ACMD23, count);/* Predefine number of sectors */



if (send_cmd(CMD25, sector) == 0) {/* WRITE_MULTIPLE_BLOCK */



do {



if (!xmit_datablock(buff, 0xFC)) break;



buff += 512;



} while (--count);



if (!xmit_datablock(0, 0xFD)) count = 1;/* STOP_TRAN token */



}



}



despiselect();



return count ? RES_ERROR : RES_OK;/* Return result */



}



#endif



/*-----------------------------------------------------------------------*/



/* Miscellaneous drive controls other than data read/write */



/*-----------------------------------------------------------------------*/



#if _USE_IOCTL



inline DRESULT USER_SPI_ioctl (



BYTE drv,/* Physical drive number (0) */



BYTE cmd,/* Control command code */



void *buff/* Pointer to the conrtol data */



)



{



DRESULT res;



BYTE n, csd[16];



DWORD *dp, st, ed, csize;



if (drv) return RES_PARERR;/* Check parameter */



if (Stat & STA_NOINIT) return RES_NOTRDY;/* Check if drive is ready */



res = RES_ERROR;



switch (cmd) {



case CTRL_SYNC :/* Wait for end of internal write process of the drive */



if (spiselect()) res = RES_OK;



break;



case GET_SECTOR_COUNT :/* Get drive capacity in unit of sector (DWORD) */



if ((send_cmd(CMD9, 0) == 0) && rcvr_datablock(csd, 16)) {



if ((csd[0] >> 6) == 1) {/* SDC ver 2.00 */



csize = csd[9] + ((WORD)csd[8] << 8) + ((DWORD)(csd[7] & 63) << 16) + 1;



*(DWORD*)buff = csize << 10;



} else {/* SDC ver 1.XX or MMC ver 3 */



n = (csd[5] & 15) + ((csd[10] & 128) >> 7) + ((csd[9] & 3) << 1) + 2;



csize = (csd[8] >> 6) + ((WORD)csd[7] << 2) + ((WORD)(csd[6] & 3) << 10) + 1;



*(DWORD*)buff = csize << (n - 9);



}



res = RES_OK;



}



break;



case GET_BLOCK_SIZE :/* Get erase block size in unit of sector (DWORD) */



if (CardType & CT_SD2) {/* SDC ver 2.00 */



if (send_cmd(ACMD13, 0) == 0) {/* Read SD status */



xchg_spi(0xFF);



if (rcvr_datablock(csd, 16)) {/* Read partial block */



for (n = 64 - 16; n; n--) xchg_spi(0xFF);/* Purge trailing data */



*(DWORD*)buff = 16UL << (csd[10] >> 4);



res = RES_OK;



}



}



} else {/* SDC ver 1.XX or MMC */



if ((send_cmd(CMD9, 0) == 0) && rcvr_datablock(csd, 16)) {/* Read CSD */



if (CardType & CT_SD1) {/* SDC ver 1.XX */



*(DWORD*)buff = (((csd[10] & 63) << 1) + ((WORD)(csd[11] & 128) >> 7) + 1) << ((csd[13] >> 6) - 1);



} else {/* MMC */



*(DWORD*)buff = ((WORD)((csd[10] & 124) >> 2) + 1) * (((csd[11] & 3) << 3) + ((csd[11] & 224) >> 5) + 1);



}



res = RES_OK;



}



}



break;



case CTRL_TRIM :/* Erase a block of sectors (used when _USE_ERASE == 1) */



if (!(CardType & CT_SDC)) break;/* Check if the card is SDC */



if (USER_SPI_ioctl(drv, MMC_GET_CSD, csd)) break;/* Get CSD */



if (!(csd[0] >> 6) && !(csd[10] & 0x40)) break;/* Check if sector erase can be applied to the card */



dp = buff; st = dp[0]; ed = dp[1];/* Load sector block */



if (!(CardType & CT_BLOCK)) {



st *= 512; ed *= 512;



}



if (send_cmd(CMD32, st) == 0 && send_cmd(CMD33, ed) == 0 && send_cmd(CMD38, 0) == 0 && wait_ready(30000)) {/* Erase sector block */



res = RES_OK;/* FatFs does not check result of this command */



}



break;



default:



res = RES_PARERR;



}



despiselect();



return res;



}



#endif