wch-code/ch32v307_mp3_dac/User/bsp/bsp_sd_spi.c

#include "bsp_sd_spi.h"
#include <string.h>

#define SD_DUMMY_BYTE                 0xFF

#define SD_CMD_GO_IDLE_STATE          0   /* CMD0 = 0x40  */
#define SD_CMD_SEND_OP_COND           1   /* CMD1 = 0x41  */
#define SD_CMD_SEND_IF_COND           8   /* CMD8 = 0x48  */
#define SD_CMD_SEND_CSD               9   /* CMD9 = 0x49  */
#define SD_CMD_SEND_CID               10  /* CMD10 = 0x4A */
#define SD_CMD_STOP_TRANSMISSION      12  /* CMD12 = 0x4C */
#define SD_CMD_SEND_STATUS            13  /* CMD13 = 0x4D */
#define SD_CMD_SET_BLOCKLEN           16  /* CMD16 = 0x50 */
#define SD_CMD_READ_SINGLE_BLOCK      17  /* CMD17 = 0x51 */
#define SD_CMD_READ_MULT_BLOCK        18  /* CMD18 = 0x52 */
#define SD_CMD_SET_BLOCK_COUNT        23  /* CMD23 = 0x57 */
#define SD_CMD_WRITE_SINGLE_BLOCK     24  /* CMD24 = 0x58 */
#define SD_CMD_WRITE_MULT_BLOCK       25  /* CMD25 = 0x59 */
#define SD_CMD_PROG_CSD               27  /* CMD27 = 0x5B */
#define SD_CMD_SET_WRITE_PROT         28  /* CMD28 = 0x5C */
#define SD_CMD_CLR_WRITE_PROT         29  /* CMD29 = 0x5D */
#define SD_CMD_SEND_WRITE_PROT        30  /* CMD30 = 0x5E */
#define SD_CMD_SD_ERASE_GRP_START     32  /* CMD32 = 0x60 */
#define SD_CMD_SD_ERASE_GRP_END       33  /* CMD33 = 0x61 */
#define SD_CMD_UNTAG_SECTOR           34  /* CMD34 = 0x62 */
#define SD_CMD_ERASE_GRP_START        35  /* CMD35 = 0x63 */
#define SD_CMD_ERASE_GRP_END          36  /* CMD36 = 0x64 */
#define SD_CMD_UNTAG_ERASE_GROUP      37  /* CMD37 = 0x65 */
#define SD_CMD_ERASE                  38  /* CMD38 = 0x66 */
#define SD_CMD_SD_APP_OP_COND         41  /* CMD41 = 0x69 */
#define SD_CMD_APP_CMD                55  /* CMD55 = 0x77 */
#define SD_CMD_READ_OCR               58  /* CMD55 = 0x7A */

#define SD_R1_NO_ERROR                0x00
#define SD_R1_RESP_IDLE_BIT           0x01
#define SD_R1_ILLEGAL_COMMAND         0x04
#define SD_DATA_RESP_OK               0x05

#define SD_SPI_PRESCALER_LOW          SPI_BaudRatePrescaler_256
#define SD_SPI_PRESCALER_HIGH         SPI_BaudRatePrescaler_4

#define SD_WAIT_CMD_RESP_TIMEOUT      10000U //等待指令响应的超时
#define SD_WAIT_READ_WRITE_TIMEOUT    100000U //等待读写操作的超时

static bsp_card_info_t card_info = { 0 };

static void sd_spi_init(void)
{
  RCC_APB2PeriphClockCmd(BSP_SD_CS_GPIO_CLK | BSP_SD_SPI_MOSI_GPIO_CLK |
          BSP_SD_SPI_MISO_GPIO_CLK | BSP_SD_SPI_SCK_GPIO_CLK, ENABLE);
  BSP_SD_SPI_CLK_ENABLE();
  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);

  GPIO_InitTypeDef GPIO_InitStructure;
  GPIO_InitStructure.GPIO_Pin = BSP_SD_SPI_SCK_PIN;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_Init(BSP_SD_SPI_SCK_GPIO_PORT, &GPIO_InitStructure);

  GPIO_InitStructure.GPIO_Pin = BSP_SD_SPI_MOSI_PIN;
  GPIO_Init(BSP_SD_SPI_MOSI_GPIO_PORT, &GPIO_InitStructure);

  GPIO_InitStructure.GPIO_Pin = BSP_SD_SPI_MISO_PIN;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
  GPIO_Init(BSP_SD_SPI_MISO_GPIO_PORT, &GPIO_InitStructure);

  GPIO_InitStructure.GPIO_Pin = BSP_SD_CS_PIN;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
  GPIO_Init(BSP_SD_CS_GPIO_PORT, &GPIO_InitStructure);

  SPI_InitTypeDef  SPI_InitStructure;
  SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
  SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
  SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
  SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;
  SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
  SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
  SPI_InitStructure.SPI_BaudRatePrescaler = SD_SPI_PRESCALER_LOW;

  SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
  SPI_InitStructure.SPI_CRCPolynomial = 7;
  SPI_Init(BSP_SD_SPI, &SPI_InitStructure);

  SPI_Cmd(BSP_SD_SPI, ENABLE);
}

static void sd_set_spi_prescaler(uint32_t prescaler)
{
  BSP_SD_SPI->CTLR1 &= 0xFFC7;
  BSP_SD_SPI->CTLR1 |= prescaler;
}

static void sd_select(void)
{
  GPIO_ResetBits(BSP_SD_CS_GPIO_PORT, BSP_SD_CS_PIN);
}

static void sd_deselect(void)
{
  GPIO_SetBits(BSP_SD_CS_GPIO_PORT, BSP_SD_CS_PIN);
}

static __always_inline uint8_t sd_write_read_byte(uint8_t tx_byte)
{
  while((BSP_SD_SPI->STATR & SPI_I2S_FLAG_TXE) == RESET);
  BSP_SD_SPI->DATAR = tx_byte;
  while((BSP_SD_SPI->STATR & SPI_I2S_FLAG_RXNE) == RESET);
  return BSP_SD_SPI->DATAR;
}

static void sd_write_bytes(const uint8_t *buffer, uint16_t length)
{
  if (length < BSP_SD_BLOCK_SIZE) { //数据量较小时使用查询方式
    for (uint32_t i = 0; i < length; i ++) {
      sd_write_read_byte(buffer[i]);
    }

    return;
  }

  uint8_t spi_rx_dummy_byte;

  /* 等待上次传输完成 */
  while((BSP_SD_SPI->STATR & SPI_I2S_FLAG_TXE) == 0);

  /* 首先配置DMA接收通道 */
  DMA_InitTypeDef DMA_InitStructure;
  DMA_InitStructure.DMA_BufferSize = length;
  DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&BSP_SD_SPI->DATAR;
  DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)&spi_rx_dummy_byte;
  DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
  DMA_InitStructure.DMA_Priority = DMA_Priority_Medium;
  DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
  DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Disable; //SPI处于全双工模式时，需要DMA RX通道从而复位SPI_I2S_FLAG_RXNE标志位
  DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
  DMA_InitStructure.DMA_MemoryDataSize = DMA_PeripheralDataSize_Byte;
  DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
  DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
  DMA_Init(BSP_SD_RX_DMA_CHANNEL, &DMA_InitStructure);

  /* 然后配置DMA发送通道 */
  DMA_InitStructure.DMA_BufferSize = length;
  DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&(BSP_SD_SPI->DATAR);
  DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)buffer;
  DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;
  DMA_InitStructure.DMA_Priority = DMA_Priority_Low; //发送DMA优先级应低于接收，防止FIFO溢出
  DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
  DMA_Init(BSP_SD_TX_DMA_CHANNEL, &DMA_InitStructure);

  SPI_I2S_DMACmd(BSP_SD_SPI, SPI_I2S_DMAReq_Rx, ENABLE);
  SPI_I2S_DMACmd(BSP_SD_SPI, SPI_I2S_DMAReq_Tx, ENABLE);
  DMA_Cmd(BSP_SD_RX_DMA_CHANNEL, ENABLE);
  DMA_Cmd(BSP_SD_TX_DMA_CHANNEL, ENABLE);

  while (DMA_GetITStatus(BSP_SD_TX_DMA_IT_TC_FLAG) != SET); //使用RTOS时改为中断模式

  SPI_I2S_DMACmd(BSP_SD_SPI, SPI_I2S_DMAReq_Rx, DISABLE);
  SPI_I2S_DMACmd(BSP_SD_SPI, SPI_I2S_DMAReq_Tx, DISABLE);
  DMA_DeInit(BSP_SD_RX_DMA_CHANNEL);
  DMA_DeInit(BSP_SD_TX_DMA_CHANNEL);
}

static void sd_read_bytes(uint8_t *buffer, uint16_t length)
{
  if (length < BSP_SD_BLOCK_SIZE) { //数据量较小时使用查询方式
    for (uint32_t i = 0; i < length; i ++) {
      buffer[i] = sd_write_read_byte(SD_DUMMY_BYTE);
    }

    return;
  }

  uint8_t spi_tx_dummy_byte = SD_DUMMY_BYTE;

  /* 等待上次传输完成 */
  while((BSP_SD_SPI->STATR & SPI_I2S_FLAG_TXE) == 0);

  /* 配置DMA接收通道 */
  DMA_InitTypeDef DMA_InitStructure;
  DMA_InitStructure.DMA_BufferSize = length;
  DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&BSP_SD_SPI->DATAR;
  DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)buffer;
  DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
  DMA_InitStructure.DMA_Priority = DMA_Priority_Medium;
  DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
  DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
  DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
  DMA_InitStructure.DMA_MemoryDataSize = DMA_PeripheralDataSize_Byte;
  DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
  DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
  DMA_Init(BSP_SD_RX_DMA_CHANNEL, &DMA_InitStructure);

  /* 配置DMA发送通道产生SPI时钟 */
  DMA_InitStructure.DMA_BufferSize = length;
  DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&(BSP_SD_SPI->DATAR);
  DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)&spi_tx_dummy_byte;
  DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;
  DMA_InitStructure.DMA_Priority = DMA_Priority_Low; //发送DMA优先级应低于接收，防止FIFO溢出
  DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Disable; //重复发送dummy字节从而产生时钟
  DMA_Init(BSP_SD_TX_DMA_CHANNEL, &DMA_InitStructure);

  SPI_I2S_DMACmd(BSP_SD_SPI, SPI_I2S_DMAReq_Rx, ENABLE);
  SPI_I2S_DMACmd(BSP_SD_SPI, SPI_I2S_DMAReq_Tx, ENABLE);
  DMA_Cmd(BSP_SD_RX_DMA_CHANNEL, ENABLE);
  DMA_Cmd(BSP_SD_TX_DMA_CHANNEL, ENABLE);

  while (DMA_GetITStatus(BSP_SD_TX_DMA_IT_TC_FLAG) != SET); //使用RTOS时改为中断模式

  SPI_I2S_DMACmd(BSP_SD_SPI, SPI_I2S_DMAReq_Rx, DISABLE);
  SPI_I2S_DMACmd(BSP_SD_SPI, SPI_I2S_DMAReq_Tx, DISABLE);
  DMA_DeInit(BSP_SD_RX_DMA_CHANNEL);
  DMA_DeInit(BSP_SD_TX_DMA_CHANNEL);
}

static void sd_enable(void)
{
  sd_write_read_byte(SD_DUMMY_BYTE); //发送额外的8个时钟
  sd_select();
}

static void sd_disable(void)
{
  sd_deselect();
  sd_write_read_byte(SD_DUMMY_BYTE); //发送额外的8个时钟
}

static bsp_sd_error_t sd_wait_response(uint8_t response)
{
  uint32_t timeout = SD_WAIT_READ_WRITE_TIMEOUT;

  do {
    if (sd_write_read_byte(SD_DUMMY_BYTE) == response) {
      return bsp_sd_error_none;
    }
  } while (timeout --);

  return bsp_sd_error_timeout;
}

static uint8_t sd_send_command(uint8_t command, uint32_t argument, uint8_t crc)
{
  sd_enable(); //拉低片选

  sd_write_bytes((uint8_t[]){ command | 0x40, argument >> 24, argument >> 16, argument >> 8, argument, crc }, 6); //发送指令+数据+CRC校验值

  uint8_t r1_response = 0xFF;
  uint32_t timeout = SD_WAIT_CMD_RESP_TIMEOUT;
  do {
    r1_response = sd_write_read_byte(SD_DUMMY_BYTE); //等待卡响应或超时
  } while ((r1_response == 0xFF || r1_response == 0x7F) && timeout --); //一些较旧的卡的CMD12回应首字节为0x7F，此后才为0xFF

  return r1_response;
}

static bsp_sd_error_t sd_wait_ready(void)
{
  bsp_sd_error_t error = bsp_sd_error_timeout;

  uint32_t timeout = SD_WAIT_READ_WRITE_TIMEOUT;
  do {
    uint8_t r1_response = sd_send_command(SD_CMD_SEND_STATUS, 0x00, 0x00); //发送CMD13请求卡片状态
    if (r1_response != SD_R1_NO_ERROR) {
      error = bsp_sd_error_invalid_response;
      goto error;
    }

    uint8_t status_register[4];
    for (uint8_t i = 0; i < 4; i ++) { //继续读取R7格式回应的剩余4字节
      status_register[i] = sd_write_read_byte(SD_DUMMY_BYTE);
    }

    if (status_register[2] & 0x01) { //READY_FOR_DATA=1
      error = bsp_sd_error_none;
      goto error;
    }
  } while (timeout --);

error:
  sd_disable();
  return error;
}

bsp_sd_error_t bsp_sd_init(void)
{
  bsp_sd_error_t error = bsp_sd_error_none;

  sd_spi_init();

  for (uint8_t i = 0; i < 10; i ++) {
    sd_write_read_byte(0xFF); //在MOSI上发送不少于74个脉冲
  }

  memset(&card_info, 0, sizeof(card_info)); //复位卡信息结构体

  uint8_t r1_response;
  uint32_t timeout = SD_WAIT_CMD_RESP_TIMEOUT;
  do {
    r1_response = sd_send_command(SD_CMD_GO_IDLE_STATE, 0, 0x95); //等待卡进入IDLE状态
  } while ((r1_response != SD_R1_RESP_IDLE_BIT) && timeout --);

  if (timeout == 0) {
    error = bsp_sd_error_timeout;
    goto error;
  }

  r1_response = sd_send_command(SD_CMD_SEND_IF_COND, 0x1AA, 0x87); //发送CMD8判断卡是否为SD V2.0
  if (r1_response & SD_R1_ILLEGAL_COMMAND) { //CMD8无响应则卡为SD V1.0或MMC卡
    sd_disable(); //结束CMD8
    /* ACMD41有响应为SD V1.0否则为MMC卡 */
    timeout = SD_WAIT_CMD_RESP_TIMEOUT;
    do {
      sd_send_command(SD_CMD_APP_CMD, 0x00, 0x00); //在发送ACMD之前都需要发送CMD55
      r1_response = sd_send_command(SD_CMD_SD_APP_OP_COND, 0x00, 0x00); //发送ACMD41尝试初始化卡
    } while (r1_response != SD_R1_NO_ERROR && timeout --); //等待R1就绪直到超时

    if (timeout == 0) { //ACMD41无响应超时
      timeout = SD_WAIT_CMD_RESP_TIMEOUT;
      do {
        r1_response = sd_send_command(SD_CMD_SEND_OP_COND, 0x00, 0x00); //发送CMD1判断是否为MMC卡
      } while (r1_response != SD_R1_NO_ERROR && timeout --);

      if (timeout == 0) { //CMD1无响应超时
        error = bsp_sd_error_unknown_card_type; //卡类型未知
        goto error;
      }

      card_info.card_type = bsp_sd_type_mmc; //CMD1有响应为MMC卡
    } else {
      card_info.card_type = bsp_sd_type_sdv1;
    }
  } else if (r1_response == SD_R1_RESP_IDLE_BIT) { //CMD8有响应则卡为SD V2.0
    uint8_t r7_response[4];
    for (uint8_t i = 0; i < 4; i ++) { //继续读取R7格式回应的剩余4字节
      r7_response[i] = sd_write_read_byte(SD_DUMMY_BYTE);
    }

    if (r7_response[2] == 0x01 && r7_response[3] == 0xAA) { //判断工作电压范围是否为2.7-3.6V
      timeout = SD_WAIT_CMD_RESP_TIMEOUT;
      do {
        sd_send_command(SD_CMD_APP_CMD, 0x00, 0x00); //在发送ACMD之前都需要发送CMD55
        r1_response = sd_send_command(SD_CMD_SD_APP_OP_COND,0x40000000,0x01); //发送ACMD41尝试初始化卡
      } while(r1_response != SD_R1_NO_ERROR && timeout --);

      if(timeout == 0) {
        error = bsp_sd_error_timeout;
        goto error;
      }

      r1_response = sd_send_command(SD_CMD_READ_OCR, 0x00, 0x00); //发送CMD58判断卡是否为HC
      if(r1_response != SD_R1_NO_ERROR) {
        error = bsp_sd_error_timeout;
        goto error;
      }
      for (uint8_t i = 0; i < 4; i ++) { //继续读取R7格式回应的剩余4字节
        r7_response[i] = sd_write_read_byte(SD_DUMMY_BYTE);
      }

      card_info.card_type = (r7_response[0] & 0x40) ? bsp_sd_type_sdv2hc : bsp_sd_type_sdv2;
    } else {
      error = bsp_sd_error_unknown_card_type;
      goto error;
    }
  }

  sd_disable(); //开始获取SD卡Block数量

  r1_response = sd_send_command(SD_CMD_SEND_CSD, 0x00, 0x00); //发送读取CSD命令
  if (r1_response != 0) {
    error = bsp_sd_error_invalid_response;
    goto error;
  }

  error = sd_wait_response(0xFE); //等待读数据就绪的Token
  if (error != bsp_sd_error_none) {
    goto error;
  }

  uint8_t csd[16];
  sd_read_bytes(csd, sizeof(csd)); //读取16字节CSD寄存器数据

  if ((csd[0] & 0xC0) == 0x40) { //SD V2.0
    uint32_t csize = csd[9] + ((uint32_t)csd[8] << 8) + ((uint32_t)(csd[7] & 0x3F) << 16) + 1;
    card_info.sector_count = csize << 10;
  } else { // SD V1.0或MMC卡
    uint32_t n = (csd[5] & 15) + ((csd[10] & 128) >> 7) + ((csd[9] & 3) << 1) + 2;
    uint32_t csize = (csd[8] >> 6) + ((uint32_t)csd[7] << 2) + ((uint32_t)(csd[6] & 3) << 10) + 1;
    card_info.sector_count = csize << (n - 9);
  }

  sd_set_spi_prescaler(SD_SPI_PRESCALER_HIGH);

error:
  sd_disable();
  return error;
}

bsp_sd_error_t bsp_sd_read_block(uint8_t* buffer, uint32_t sector_address)
{
  bsp_sd_error_t error = bsp_sd_error_none;

  if (card_info.card_type != bsp_sd_type_sdv2hc) {
    sector_address <<= 9;
  }

  uint8_t r1_response = sd_send_command(SD_CMD_READ_SINGLE_BLOCK, sector_address, 0x00); //发送单Block读取命令
  if (r1_response != 0) {
    error = bsp_sd_error_invalid_response;
    goto error;
  }

  error = sd_wait_response(0xFE); //等待读数据就绪的Token
  if (error != bsp_sd_error_none) {
    goto error;
  }

  sd_read_bytes(buffer, BSP_SD_BLOCK_SIZE); //读取单个Block的数据
  sd_write_bytes((uint8_t[]){ 0xFF, 0xFF }, 2); //跳过2字节CRC

error:
  sd_disable();
  return error;
}

bsp_sd_error_t bsp_sd_read_multi_blocks(uint8_t* buffer, uint32_t sector_address, uint16_t sector_count)
{
  bsp_sd_error_t error = bsp_sd_error_none;

  if (card_info.card_type != bsp_sd_type_sdv2hc) {
    sector_address <<= 9;
  }

  if (sector_count <= 1) {
    return bsp_sd_error_invalid_parameter;
  } else {
    uint8_t r1_response = sd_send_command(SD_CMD_READ_MULT_BLOCK, sector_address, 0x00);
    if (r1_response != SD_R1_NO_ERROR) {
      error = bsp_sd_error_invalid_response;
      goto error;
    }

    for (uint16_t i = 0; i < sector_count; i ++) { //循环读取多个Block
      error = sd_wait_response(0xFE); //等待读数据就绪的Token
      if (error != bsp_sd_error_none) {
        goto error;
      }

      sd_read_bytes(buffer, BSP_SD_BLOCK_SIZE); //读取单个Block的数据
      sd_write_bytes((uint8_t[]){ 0xFF, 0xFF }, 2); //跳过2字节CRC

      buffer += BSP_SD_BLOCK_SIZE; //准备读取下一个Block
    }

    r1_response = sd_send_command(SD_CMD_STOP_TRANSMISSION, 0, 0x00); //结束单个Block的读取
    if (r1_response != SD_R1_NO_ERROR) {
      error = bsp_sd_error_invalid_response;
      goto error;
    }
  }

error:
  sd_disable();
  return error;
}

bsp_sd_error_t bsp_sd_write_block(const uint8_t *buffer, uint32_t sector_address)
{
  bsp_sd_error_t error = bsp_sd_error_none;

  if (card_info.card_type != bsp_sd_type_sdv2hc) {
    sector_address <<= 9;
  }

  sd_wait_ready(); //一些较慢的卡在连续写操作前需要检查卡是否忙

  uint8_t r1_response = sd_send_command(SD_CMD_WRITE_SINGLE_BLOCK, sector_address, 0x00);
  if (r1_response != 0) {
    error = bsp_sd_error_invalid_response;
    goto error;
  }

  sd_write_read_byte(0xFE); //发送单Block写的Token

  sd_write_bytes(buffer, BSP_SD_BLOCK_SIZE); //写入单个Block的数据
  sd_write_bytes((uint8_t[]){ 0xFF, 0xFF }, 2); //跳过2字节CRC

  uint8_t data_response = sd_write_read_byte(0xFF) & 0x1F;
  if (data_response != SD_DATA_RESP_OK) { //判断卡是否成功接收数据
    error = bsp_sd_error_not_ready;
    goto error;
  }

  error = sd_wait_response(0xFF); //等待写入操作完成
  if (error != bsp_sd_error_none) {
    goto error;
  }

error:
  sd_disable();
  return error;
}

bsp_sd_error_t bsp_sd_write_multi_blocks(const uint8_t *buffer, uint32_t sector_address, uint16_t sector_count)
{
  bsp_sd_error_t error = bsp_sd_error_none;

  if (card_info.card_type != bsp_sd_type_sdv2hc) {
    sector_address <<= 9;
  }

  sd_wait_ready(); //一些较慢的卡在连续写操作前需要检查卡是否忙

  uint8_t r1_response;
  if (card_info.card_type != bsp_sd_type_mmc) { //非MMC卡必须要发送CMD55与ACMD23
    sd_send_command(SD_CMD_APP_CMD, 0x00, 0x00);

    r1_response = sd_send_command(SD_CMD_SET_BLOCK_COUNT, sector_count, 0x00);
    if (r1_response != SD_R1_NO_ERROR) {
      error = bsp_sd_error_invalid_response;
      goto error;
    }
  }

  r1_response = sd_send_command(SD_CMD_WRITE_MULT_BLOCK, sector_address, 0x00);
  if (r1_response != SD_R1_NO_ERROR) {
    error = bsp_sd_error_invalid_response;
    goto error;
  }

  for (uint16_t i = 0; i < sector_count; i ++) { //循环写入多个Block
    sd_write_read_byte(0xFC); //发送多Block写开始的Token

    sd_write_bytes(buffer, BSP_SD_BLOCK_SIZE);
    sd_write_bytes((uint8_t[]){ 0xFF, 0xFF }, 2); //跳过2字节CRC

    uint8_t data_response = sd_write_read_byte(0xFF) & 0x1F;
    if (data_response != SD_DATA_RESP_OK) { //判断卡是否成功接收数据
      error = bsp_sd_error_not_ready;
      goto error;
    }

    error = sd_wait_response(0xFF); //等待写入操作完成
    if (error != bsp_sd_error_none) {
      goto error;
    }

    buffer += BSP_SD_BLOCK_SIZE;
  }

  sd_write_read_byte(0xFD); //发送多Block写结束的Token

  error = sd_wait_response(0xFF); //等待写入操作完成
  if (error != bsp_sd_error_none) {
	  goto error;
  }

error:
  sd_disable();
  return error;
}

void bsp_sd_spi_get_card_info(bsp_card_info_t *card_info_out)
{
  memcpy(card_info_out, &card_info, sizeof(bsp_card_info_t));
}