stm32 QSPI内存映射模式

Onesdfa 提问时间：2019-1-25 21:18 /

2ST金币

使用Stm32 F767,需要使用内存映射模式，参考STM32F769_DISCO开发板的源码，使用了内存映射模式。用来驱动W25Q256，参数如下：
//------------------------------------------------------------------------------------------------------------------------------
      QSPI_MemoryMappedTypeDef sMemMappedCfg;

      sMemMappedCfg.TimeOutActivation = QSPI_TIMEOUT_COUNTER_DISABLE;

      s_command.InstructionMode = QSPI_INSTRUCTION_1_LINE;
  s_command.Instruction    = Fast_Read_Quad;
  s_command.AddressMode    = QSPI_ADDRESS_4_LINES;
  s_command.Address          = 0;
  s_command.AddressSize    = QSPI_ADDRESS_24_BITS;
  s_command.AlternateByteMode = QSPI_ALTERNATE_BYTES_4_LINES;
      s_command.AlternateBytes                = 0x00;
      s_command.AlternateBytesSize = QSPI_ALTERNATE_BYTES_8_BITS;
  s_command.DataMode       = QSPI_DATA_4_LINES;
  s_command.DummyCycles    = 4;
  s_command.NbData          = 0;
  s_command.DdrMode          = QSPI_DDR_MODE_DISABLE;
  s_command.DdrHoldHalfCycle  = QSPI_DDR_HHC_ANALOG_DELAY;
      s_command.SIOOMode       = QSPI_SIOO_INST_EVERY_CMD;
  //s_command.SIOOMode       = QSPI_SIOO_INST_ONLY_FIRST_CMD;             //只发送一次指令

      if (HAL_QSPI_MemoryMapped(&QSPI, &s_command, &sMemMappedCfg) != HAL_OK)
      {
            //Error_Handler();
      }

//------------------------------------------------------------------------------------------------------------------------------

执行到HAL_QSPI_MemoryMapped（）会返回Error，原因是设置标记位时一直不成功，有时也可能会成功，但
DBG时看到内存映射的地址0x90000000里的数据与Flash内存储的并不相同。

苦恼了好些天了，希望有大神帮忙解答下！