AT45DB161D_Flash 读取不了ID号？？

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楼主 | 2019-11-17 12:00 | 只看该作者回帖奖励

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AT45DB161D, flash, TE, se, pi

有人用过AT45DB161D的Flash片子没？我读取的ID号是全FF  正确的应该是0x1F260000  求助啊纠结好久了~~~
FlashID = SPI_FLASH_ReadID();
u32 SPI_FLASH_ReadID(void)
{
  u32 Temp = 0, Temp0 = 0, Temp1 = 0, Temp2 = 0, Temp3 = 0;

  /* Select the FLASH: Chip Select low */
  SPI_FLASH_CS_LOW();

  /* Send &quot;RDID &quot; instruction */
  SPI_FLASH_SendByte(0x9F);             //Manufacturer and Device Read Datasheet P44

  /* Read a byte from the FLASH */
  Temp0 = SPI_FLASH_SendByte(Dummy_Byte);
      //printf(&quot;Temp0 =0x%X\n&quot;,Temp0);

  /* Read a byte from the FLASH */
  Temp1 = SPI_FLASH_SendByte(Dummy_Byte);
//       printf(&quot;Temp1 =0x%X\n&quot;,Temp1);
  /* Read a byte from the FLASH */
  Temp2 = SPI_FLASH_SendByte(Dummy_Byte);
//       printf(&quot;Temp2 =0x%X\n&quot;,Temp2);
  /* Read a byte from the FLASH */
  Temp3 = SPI_FLASH_SendByte(Dummy_Byte);
// printf(&quot;Temp3 =0x%X\n&quot;,Temp3);
  /* Deselect the FLASH: Chip Select high */
  SPI_FLASH_CS_HIGH();

  Temp = (Temp0 << 24) | (Temp1 << 16) | (Temp2<<8) | Temp3;

  return Temp;
}

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