QSPI N25Q256 读取 ID ??

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hpdell 提问时间：2016-11-5 14:44 /

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本帖最后由 hpdell 于 2016-11-5 15:34 编辑

QSPI N25Q256 读取 ID 貌似跟资料介绍的不一致？？

资料介绍

实际读取到的 ID

对这个芯片的数据读写，4k擦除完全正常，但是还有芯片擦除还是不行

/* Identification Operations */
#define QSPI_READ_ID_CMD                         0x9E

#define QSPI_READ_ID_CMD2                      0x9F
#define QSPI_MULTIPLE_IO_READ_ID_CMD             0xAF
#define QSPI_READ_SERIAL_FLASH_DISCO_PARAM_CMD 0x5A

读取函数如下：

QSPI_StaticTypeDef QSPI_Read_ID(uint8_t ReadID, uint8_t * _pIdBuf, uint8_t ReadIdNum)
{

      QSPI_CommandTypeDef sCommand;
      __IO uint32_t cc;

  //Initialize the read command
  sCommand.InstructionMode = QSPI_INSTRUCTION_1_LINE;    //指令模式
  sCommand.AddressSize    = QSPI_ADDRESS_24_BITS;       //地址长度
  sCommand.AlternateByteMode = QSPI_ALTERNATE_BYTES_NONE; //无交替字节
  sCommand.DdrMode          = QSPI_DDR_MODE_DISABLE;    //关闭DDR模式
  sCommand.DdrHoldHalfCycle  = QSPI_DDR_HHC_ANALOG_DELAY;
  sCommand.SIOOMode       = QSPI_SIOO_INST_EVERY_CMD;

  sCommand.Instruction       = ReadID;                         //指令

  sCommand.DummyCycles       = 1;                               //设置空指令周期数
// sCommand.Address          = address;                         //地址
  sCommand.NbData          = ReadIdNum;       // 需要读取的字节数

  if(ReadID == QSPI_MULTIPLE_IO_READ_ID_CMD)
  {
sCommand.AddressMode       = QSPI_ADDRESS_4_LINES;             //地址模式
sCommand.DataMode          = QSPI_DATA_4_LINES;                //数据模式
  }
  else
  {
sCommand.AddressMode       = QSPI_ADDRESS_1_LINE;             //地址模式
sCommand.DataMode          = QSPI_DATA_1_LINE;                //数据模式
  }

  if (HAL_QSPI_Command(&hqspi, &sCommand, HAL_QPSI_TIMEOUT_DEFAULT_VALUE) != HAL_OK)
  {
return QSPI_ERROR;
  }

  RxCplt = 0;    // 接收标志清0
  if (HAL_QSPI_Receive_IT(&hqspi, _pIdBuf) != HAL_OK)
  {
return QSPI_ERROR;
  }

  cc = 0;
  do{

cc ++;

  } while( (RxCplt == 0) && (cc < QSPI_WAIT_MAX_TIME));

  if(cc >= (QSPI_WAIT_MAX_TIME - 1 ))
return QSPI_ERROR;

      return QSPI_OK;
}

main{

  .........................

  QSPI_Read_ID( QSPI_READ_ID_CMD2, (uint8_t*) &uart_rx_buff[0], 20);
  uart_rx_buff[18] = 0xff; // 特意赋值为 0xff
  for(cc=0;cc<20;cc++)
printf("ID = %#x, %d\r\n", uart_rx_buff[cc], cc);

}