【STM32开发】 | 读写AT45DB161

#ifndef AT45DB161E_HELPER_H
#define AT45DB161E_HELPER_H

#include "main.h"

#define AT45_NSS_Pin            GPIO_PIN_15
#define AT45_NSS_GPIO_Port      GPIOA
#define AT45_RESET_Pin          GPIO_PIN_10
#define AT45_RESET_GPIO_Port    GPIOC
#define AT45_SCK_Pin            GPIO_PIN_3
#define AT45_SCK_GPIO_Port      GPIOB
#define AT45_MISO_Pin           GPIO_PIN_4
#define AT45_MISO_GPIO_Port     GPIOB
#define AT45_MOSI_Pin           GPIO_PIN_5
#define AT45_MOSI_GPIO_Port     GPIOB

#define AT45_FAST_READ              0x0B
#define AT45_FAST_READ_BUFFER1      0xD4
#define AT45_FAST_WRITE_BUFFER1     0x84
#define AT45_READ_REGISTER_STATUS   0xD7
#define AT45_MEM_TO_BUFFER1         0x53
#define AT45_BUFFER1_TO_MEM         0x82


#define __AT45_NSS_HIGH()       ((AT45_NSS_GPIO_Port->BSRR) = ((uint32_t)AT45_NSS_Pin))
#define __AT45_NSS_LOW()        ((AT45_NSS_GPIO_Port->BRR) = ((uint32_t)AT45_NSS_Pin))
#define __AT45_CLK_HIGH()       ((AT45_SCK_GPIO_Port->BSRR) = ((uint32_t)AT45_SCK_Pin))
#define __AT45_CLK_LOW()        ((AT45_SCK_GPIO_Port->BRR) = ((uint32_t)AT45_SCK_Pin))
#define __AT45_MOSI_HIGH()      ((AT45_MOSI_GPIO_Port->BSRR) = ((uint32_t)AT45_MOSI_Pin))
#define __AT45_MOSI_LOW()       ((AT45_MOSI_GPIO_Port->BRR) = ((uint32_t)AT45_MOSI_Pin))
#define __AT45_RESET_HIGH()     ((AT45_RESET_GPIO_Port->BSRR) = ((uint32_t)AT45_RESET_Pin))
#define __AT45_RESET_LOW()      ((AT45_RESET_GPIO_Port->BRR) = ((uint32_t)AT45_RESET_Pin))

#define __AT45_MISO_STATE()     ((AT45_MISO_GPIO_Port->IDR) & (AT45_MISO_Pin))



void AT45DB161E_GPIO_Init(void);
uint8_t AT45DB161E_SendByte(uint8_t data);
uint8_t AT45DB161E_ReadRegisterStatus(void);
void AT45DB161E_WriteData(uint32_t addr, uint8_t *buf, uint32_t bufLen);
void AT45DB161E_ReadData(uint32_t addr, uint8_t *buf, uint32_t bufLen);
void AT45DB161E_WriteBytesToBuffer1(uint32_t addr, uint8_t *buf, uint32_t bufLen);
void AT45DB161E_ReadBytesForBuffer1(uint32_t addr, uint8_t *buf, uint32_t bufLen);
void AT45DB161E_PageToBuffer(uint32_t addr);
void AT45DB161E_BufferToPage(uint32_t addr, uint8_t *buf, uint32_t bufLen);
void AT45DB161E_ChipErase(void);




#endif

#include "at45db161e_helper.h"

/**
 *
 */
void AT45DB161E_GPIO_Init(void)
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};

  /* GPIO Ports Clock Enable */
  __HAL_RCC_GPIOC_CLK_ENABLE();
  __HAL_RCC_GPIOA_CLK_ENABLE();
  __HAL_RCC_GPIOB_CLK_ENABLE();

  /*Configure GPIO pins : LED_WHITE_1_Pin PC1 PC4 PC5
                           TEMP1_SDA_Pin TEMP1_SCL_Pin FLASH_RESET_Pin CHARGE_CE_Pin
                           SYS_POWER_EN_Pin */
  GPIO_InitStruct.Pin = AT45_SCK_Pin | AT45_MOSI_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
  HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

  GPIO_InitStruct.Pin = AT45_MISO_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  HAL_GPIO_Init(AT45_MISO_GPIO_Port, &GPIO_InitStruct);

  GPIO_InitStruct.Pin = AT45_NSS_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
  HAL_GPIO_Init(AT45_NSS_GPIO_Port, &GPIO_InitStruct);

  GPIO_InitStruct.Pin = AT45_RESET_Pin;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
  HAL_GPIO_Init(AT45_RESET_GPIO_Port, &GPIO_InitStruct);

  __AT45_RESET_HIGH();
  __AT45_NSS_HIGH();
}

/**
 *
 * @param data
 * @return
 */
uint8_t AT45DB161E_SendByte(uint8_t data)
{
  uint8_t recvData= 0;

  __AT45_NSS_LOW();

  for(uint8_t count = 0; count < 8; count++)
  {
    __AT45_CLK_LOW();
    UserDelay_us(5);
    if((data << count) & 0x80)
    {
      __AT45_MOSI_HIGH();
    }
    else
    {
      __AT45_MOSI_LOW();
    }
    UserDelay_us(1);
    __AT45_CLK_HIGH();
    UserDelay_us(1);

    if(__AT45_MISO_STATE())
    {
      recvData |= 0x01 << (7 - count);
    }
    else
    {
      recvData |= 0x00 << (7 - count);
    }
    UserDelay_us(3);
  }

  __AT45_CLK_LOW();
  UserDelay_us(10);

  return recvData;
}

/**
 *
 * @param addr
 * @param buf
 * @param bufLen
 */
void AT45DB161E_WriteData(uint32_t addr, uint8_t *buf, uint32_t bufLen)
{
  uint32_t availableByte, writeNum;

  while(bufLen)
  {
    AT45DB161E_PageToBuffer(addr);

    availableByte = 528 - addr % 528;
    if(availableByte >= bufLen)
    {
      writeNum = bufLen;
    }
    else
    {
      writeNum = availableByte;
    }
    AT45DB161E_BufferToPage(addr, buf, writeNum);
    buf += writeNum;
    bufLen -= writeNum;
    addr += writeNum;
  }
}

/**
 *
 * @param addr
 * @param buf
 * @param bufLen
 */
void AT45DB161E_ReadData(uint32_t addr, uint8_t *buf, uint32_t bufLen)
{
  uint8_t addrBuf[3], i;
  uint16_t pageAddr, bufferAddr, addrValue;

  __AT45_NSS_LOW();
  AT45DB161E_SendByte(AT45_FAST_READ);

  pageAddr = (addr / 528) << 10;
  bufferAddr = addr % 528;
  addrValue = pageAddr | bufferAddr;

  addrBuf[0] = (char)((addrValue & 0x3FFFFF) >> 16);
  addrBuf[1] = (char)((addrValue & 0x3FFFFF) >> 8);
  addrBuf[2] = (char)((addrValue & 0x3FFFFF) >> 0);

  for(i = 0; i < 3; i++)
  {
    AT45DB161E_SendByte(addrBuf[i]);
  }

  AT45DB161E_SendByte(0x00);

  while(bufLen--)
  {
    *buf++ = AT45DB161E_SendByte(0x00);
  }

  __AT45_NSS_HIGH();
  UserDelay_us(10);
}

/**
 *
 * @param addr
 * @param buf
 * @param bufLen
 */
void AT45DB161E_ReadBytesForBuffer1(uint32_t addr, uint8_t *buf, uint32_t bufLen)
{
  uint8_t addrBuf[3], i;

  __AT45_NSS_LOW();
  AT45DB161E_SendByte(AT45_FAST_READ_BUFFER1);

  addrBuf[0] = (char)((addr & 0x03FF) >> 16);
  addrBuf[1] = (char)((addr & 0x03FF) >> 8);
  addrBuf[2] = (char)((addr & 0x03FF) >> 0);

  for(i = 0; i < 3; i++)
  {
    AT45DB161E_SendByte(addrBuf[i]);
  }

  AT45DB161E_SendByte(0x00);

  while(bufLen--)
  {
    *buf++ = AT45DB161E_SendByte(0x00);
  }

  __AT45_NSS_HIGH();
  UserDelay_us(10);
}

/**
 *
 * @param addr
 * @param buf
 * @param bufLen
 */
void AT45DB161E_WriteBytesToBuffer1(uint32_t addr, uint8_t *buf, uint32_t bufLen)
{
  uint8_t addrBuf[3], i;

  __AT45_NSS_LOW();
  AT45DB161E_SendByte(AT45_FAST_WRITE_BUFFER1);

  addrBuf[0] = (char)((addr & 0x03FF) >> 16);
  addrBuf[1] = (char)((addr & 0x03FF) >> 8);
  addrBuf[2] = (char)((addr & 0x03FF) >> 0);

  for(i = 0; i < 3; i++)
  {
    AT45DB161E_SendByte(addrBuf[i]);
  }

  while(bufLen--)
  {
    AT45DB161E_SendByte(*buf++);
  }

  __AT45_NSS_HIGH();
  UserDelay_us(10);
}

/**
 *
 * @return
 */
uint8_t AT45DB161E_ReadRegisterStatus(void)
{
  uint8_t status;

  __AT45_NSS_LOW();
  AT45DB161E_SendByte(AT45_READ_REGISTER_STATUS);

  status = AT45DB161E_SendByte(0x00);

  __AT45_NSS_HIGH();
  UserDelay_us(10);

  return status;
}

/**
 *
 * @param addr
 */
void AT45DB161E_PageToBuffer(uint32_t addr)
{
  uint8_t Add_Buf[3], i;
  uint8_t Status;

  __AT45_NSS_LOW();
  AT45DB161E_SendByte(AT45_MEM_TO_BUFFER1);

  addr = (addr / 528) << 10;

  Add_Buf[0] = (char)((addr & 0x3FFC00) >> 16);
  Add_Buf[1] = (char)((addr & 0x3FFC00) >> 8);
  Add_Buf[2] = (char)((addr & 0x3FFC00) >> 0);

  for(i = 0; i < 3; i++)
  {
    AT45DB161E_SendByte(Add_Buf[i]);
  }

  __AT45_NSS_HIGH();
  UserDelay_us(10);

  Status = (AT45DB161E_ReadRegisterStatus() & 0x80) >> 7;
  while(Status == 0x00)
  {
    Status = (AT45DB161E_ReadRegisterStatus() & 0x80) >> 7;
  }
}

/**
 *
 * @param addr
 * @param buf
 * @param bufLen
 */
void AT45DB161E_BufferToPage(uint32_t addr, uint8_t *buf, uint32_t bufLen)
{
  uint8_t Add_Buf[3],i;
  uint8_t Status;
  uint32_t Page_Add, Buffer_Add, Add_Value;

  __AT45_NSS_LOW();
  AT45DB161E_SendByte(AT45_BUFFER1_TO_MEM);

  Page_Add = (addr / 528) << 10;
  Buffer_Add = addr % 528;
  Add_Value = Page_Add | Buffer_Add;

  Add_Buf[0] = (char)((Add_Value & 0x3FFFFF) >> 16);
  Add_Buf[1] = (char)((Add_Value & 0x3FFFFF) >> 8);
  Add_Buf[2] = (char)((Add_Value & 0x3FFFFF) >> 0);

  for(i = 0; i < 3; i++)
  {
    AT45DB161E_SendByte(Add_Buf[i]);
  }

  while(bufLen--)
  {
    AT45DB161E_SendByte(*buf++);
  }

  __AT45_NSS_HIGH();
  UserDelay_us(10);

  Status = (AT45DB161E_ReadRegisterStatus() & 0x80) >> 7;
  while(Status == 0x00)
  {
    Status = (AT45DB161E_ReadRegisterStatus() & 0x80) >> 7;
  }
}

/**
 *
 */
void AT45DB161E_ChipErase(void)
{
  uint8_t Status;

  __AT45_NSS_LOW();
  AT45DB161E_SendByte(0xC7);
  AT45DB161E_SendByte(0x94);
  AT45DB161E_SendByte(0x80);
  AT45DB161E_SendByte(0x9A);

  __AT45_NSS_HIGH();
  UserDelay_us(10);

  Status = (AT45DB161E_ReadRegisterStatus() & 0x80) >> 7;
  while(Status == 0x00)
  {
    Status = (AT45DB161E_ReadRegisterStatus() & 0x80) >> 7;
  }
}