STM32F103VET6 使用FSMC控制nandflash不成功？？？

ganaxiaochuan · 发表于 2017-11-30 17:48:52

本帖最后由 ganaxiaochuan 于 2017-11-30 18:24 编辑

模拟的成功的了但使用FSMC读取的id就全是FF；
原理图：

原理图

参考的原子哥f429和官方板子的；
程序参考的官方的例程，还没来得及改其他的，主要就用了
/*******************************************************************************
* Function Name  : FSMC_NAND_Init
* Description : Configures the FSMC and GPIOs to interface with the NAND memory.
*                This function must be called before any write/read operation
*                on the NAND.
* Input       : None
* Output       : None
* Return       : None
*******************************************************************************/
void FSMC_NAND_Init(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;
  FSMC_NANDInitTypeDef FSMC_NANDInitStructure;
  FSMC_NAND_PCCARDTimingInitTypeDef  p;

  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD | RCC_APB2Periph_GPIOE, ENABLE);

/*-- GPIO Configuration ------------------------------------------------------*/
/* CLE, ALE, D0->D3, NOE, NWE and NCE2  NAND pin configuration  */
  GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_11 | GPIO_Pin_12 | GPIO_Pin_14 | GPIO_Pin_15 |
                              GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_4 | GPIO_Pin_5 |
                              GPIO_Pin_7;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;

  GPIO_Init(GPIOD, &GPIO_InitStructure);

/* D4->D7 NAND pin configuration  */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10;

  GPIO_Init(GPIOE, &GPIO_InitStructure);

/* NWAIT NAND pin configuration */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;

  GPIO_Init(GPIOD, &GPIO_InitStructure);

  /*-- FSMC Configuration ------------------------------------------------------*/
  p.FSMC_SetupTime = 0x1;
  p.FSMC_WaitSetupTime = 0x3;
  p.FSMC_HoldSetupTime = 0x2;
  p.FSMC_HiZSetupTime = 0x1;

  FSMC_NANDInitStructure.FSMC_Bank = FSMC_Bank2_NAND;
  FSMC_NANDInitStructure.FSMC_Waitfeature = FSMC_Waitfeature_Enable;
  FSMC_NANDInitStructure.FSMC_MemoryDataWidth = FSMC_MemoryDataWidth_8b;
  FSMC_NANDInitStructure.FSMC_ECC = FSMC_ECC_Enable;
  FSMC_NANDInitStructure.FSMC_ECCPageSize = FSMC_ECCPageSize_2048Bytes;

  FSMC_NANDInitStructure.FSMC_TCLRSetupTime = 0x00;
  FSMC_NANDInitStructure.FSMC_TARSetupTime = 0x00;

  FSMC_NANDInitStructure.FSMC_CommonSpaceTimingStruct = &p;
  FSMC_NANDInitStructure.FSMC_AttributeSpaceTimingStruct = &p;

  FSMC_NANDInit(&FSMC_NANDInitStructure);

  /* FSMC NAND Bank Cmd Test */
  FSMC_NANDCmd(FSMC_Bank2_NAND, ENABLE);
}

/******************************************************************************
* Function Name  : FSMC_NAND_ReadID
* Description : Reads NAND memory's ID.
* Input       : - NAND_ID: pointer to a NAND_IDTypeDef structure which will hold
*                   the Manufacturer and Device ID.
* Output       : None
* Return       : None
*******************************************************************************/
void FSMC_NAND_ReadID(NAND_IDTypeDef* NAND_ID)
{
  uint32_t data = 0;

  /* Send Command to the command area */
  *(__IO uint8_t *)(Bank_NAND_ADDR | CMD_AREA) = 0x90;
  *(__IO uint8_t *)(Bank_NAND_ADDR | ADDR_AREA) = 0x00;

/* Sequence to read ID from NAND flash */
data = *(__IO uint32_t *)(Bank_NAND_ADDR | DATA_AREA);

NAND_ID->Maker_ID = ADDR_1st_CYCLE (data);
NAND_ID->Device_ID  = ADDR_2nd_CYCLE (data);
NAND_ID->Third_ID = ADDR_3rd_CYCLE (data);
NAND_ID->Fourth_ID  = ADDR_4th_CYCLE (data);
}

主函数中就先调用FSMC_NAND_Init进行初始化；然后读取id；读取出来全是零；
有大神用过吗，给点建议呗，