IO模拟SPI _读写 SPI FLASH-25Q32

1万 · 2021-5-9 19:08

/******************** (C) COPYRIGHT ********************
* 文件名  ：spi_flash.c
* 描述：spi 底层应用函数库
* 硬件连接 ----------------------------
*       | PC8-SPI2-NSS  : W25X40-CS  |
*       | PD14-SPI2-SCK  : W25X40-CLK |
*       | PC7-SPI2-MISO : W25X40-DO  |
*       | PD13-SPI2-MOSI : W25X40-DIO |
*       | PC6-WRITE : W25X40-DIO |
*       | PD15-HOLD : W25X40-DIO |
*       ----------------------------
* 库版本  ：ST3.0.0
*
* 作者：
* 博客：
**********************************************************************************/
#include "spi_flash.h"
#include "gpio.h"

/* Private typedef -----------------------------------------------------------*/
//#define SPI_FLASH_PageSize    4096
#define SPI_FLASH_PageSize    256
#define SPI_FLASH_PerWritePageSize    256

/* Private define ------------------------------------------------------------*/
#define W25X_WriteEnable                   0x06
#define W25X_WriteDisable                   0x04
#define W25X_ReadStatusReg                   0x05
#define W25X_WriteStatusReg                   0x01
#define W25X_ReadData                               0x03
#define W25X_FastReadData                   0x0B
#define W25X_FastReadDual                   0x3B
#define W25X_PageProgram                   0x02
#define W25X_BlockErase                            0xD8
#define W25X_SectorErase                   0x20
#define W25X_ChipErase                            0xC7
#define W25X_PowerDown                            0xB9
#define W25X_ReleasePowerDown          0xAB
#define W25X_DeviceID                               0xAB
#define W25X_ManufactDeviceID          0x90
#define W25X_JedecDeviceID                   0x9F

#define WIP_Flag                0x01  /* Write In Progress (WIP) flag */

#define Dummy_Byte             0xFF

1万 · 2021-5-9 19:10

void SPI_FLASH_Write_Protect_ENABLE(void)//flash 打开写保护
{
SPI_FLASH_Write_Protect_Assert();
}

1万 · 2021-5-9 19:12

void SPI_FLASH_Write_Protect_DISABLE(void)//flash 关闭写保护
{
SPI_FLASH_Write_Protect_Deassert();
}

1万 · 2021-5-9 19:14

void SPI_FLASH_Hold_ENABLE(void)//flash HOLD ENABLE
{
SPI_FLASH_Hold_Assert();
}

1万 · 2021-5-9 19:16

void SPI_FLASH_Hold_DISABLE(void)//flash HOLD DISABLE
{
SPI_FLASH_Hold_Deassert();
}

1万 · 2021-5-9 19:17

/*******************************************************************************
* Function Name  : SPI_FLASH_Init
* Description : Initializes the peripherals used by the SPI FLASH driver.
* Input       : None
* Output       : None
* Return       : None
*******************************************************************************/
void SPI_FLASH_Init(void)
{
#ifdef _BOARD  //DEMO Board

GpioInitTypeDef gpioInitStr;

// 初始化模拟SPI的IO口
// SPI_FLASH_SCK_S  PA5
      gpioInitStr.GpioPin = SPI_FLASH_SCK_PIN_S;
      gpioInitStr.GpioSpeed = GpioSpeed2MHz;
      gpioInitStr.GpioMode = Gpio_Mode_Out_PP;
      GpioInit(SPI_FLASH_SCK_PORT_S, &gpioInitStr);
// SPI_FLASH_MOSI_S PA7
         gpioInitStr.GpioPin = SPI_FLASH_MOSI_PIN_S;
      GpioInit(SPI_FLASH_MOSI_PORY_S, &gpioInitStr);
// SPI_FLASH_NSS_S  PA4
gpioInitStr.GpioPin = SPI_FLASH_NSS_PIN_S;
      GpioInit(SPI_FLASH_NSS_PORT_S, &gpioInitStr);

// SPI_FLASH_MISO_S PA6
         gpioInitStr.GpioPin = SPI_FLASH_MISO_PIN_S;
      gpioInitStr.GpioMode = Gpio_Mode_IN_FLOATING;
   //gpioInitStr.GpioMode = Gpio_Mode_IPU;
      GpioInit(SPI_FLASH_MISO_PORY_S, &gpioInitStr);

#else
#ifdef SPI_FLASH_HAL

  SPI_InitTypeDef  SPI_InitStructure;
  GPIO_InitTypeDef GPIO_InitStructure;

  /* Enable SPI1 and GPIO clocks */
  /*!< SPI_FLASH_SPI_CS_GPIO, SPI_FLASH_SPI_MOSI_GPIO,
   SPI_FLASH_SPI_MISO_GPIO, SPI_FLASH_SPI_DETECT_GPIO
   and SPI_FLASH_SPI_SCK_GPIO Periph clock enable */
  // spi2管脚重映射
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOD, ENABLE);

  /*!< SPI_FLASH_SPI Periph clock enable */
  RCC_APB2PeriphClockCmd(RCC_APB1Periph_SPI2, ENABLE);
  /*!< AFIO Periph clock enable */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);


  /*!< Configure SPI_FLASH_SPI pins: SCK */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_14;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_Init(GPIOD, &GPIO_InitStructure);

  /*!< Configure SPI_FLASH_SPI pins: MISO */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7;
  GPIO_Init(GPIOC, &GPIO_InitStructure);

  /*!< Configure SPI_FLASH_SPI pins: MOSI */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13;
  GPIO_Init(GPIOD, &GPIO_InitStructure);

  /*!< Configure SPI_FLASH_SPI_CS_PIN pin: SPI_FLASH Card CS pin */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
  GPIO_Init(GPIOC, &GPIO_InitStructure);

  /* Deselect the FLASH: Chip Select high */
  SPI_FLASH_CS_HIGH();

  /* SPI1 configuration */
  // W25X40: data input on the DIO pin is sampled on the rising edge of the CLK.
  // Data on the DO and DIO pins are clocked out on the falling edge of CLK.
  SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
  SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
  SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
  SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;
  SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
  SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
  SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_4;
  SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;  //高位先发
  SPI_InitStructure.SPI_CRCPolynomial = 7;
  SPI_Init(SPI2, &SPI_InitStructure);

  /* Enable SPI1  */
  SPI_Cmd(SPI2, ENABLE);

#else
GpioInitTypeDef gpioInitStr;

// 初始化模拟SPI的IO口
// SPI_FLASH_SCK_S  PD14
      gpioInitStr.GpioPin = SPI_FLASH_SCK_PIN_S;
      gpioInitStr.GpioSpeed = GpioSpeed2MHz;
      gpioInitStr.GpioMode = Gpio_Mode_Out_PP;
      GpioInit(SPI_FLASH_SCK_PORT_S, &gpioInitStr);
// SPI_FLASH_MOSI_S PD13
         gpioInitStr.GpioPin = SPI_FLASH_MOSI_PIN_S;
      GpioInit(SPI_FLASH_MOSI_PORY_S, &gpioInitStr);
// SPI_FLASH_NSS_S  PC8
gpioInitStr.GpioPin = SPI_FLASH_NSS_PIN_S;
      GpioInit(SPI_FLASH_NSS_PORT_S, &gpioInitStr);

// SPI_FLASH_MISO_S PC7
         gpioInitStr.GpioPin = SPI_FLASH_MISO_PIN_S;
      gpioInitStr.GpioMode = Gpio_Mode_IN_FLOATING;
   //gpioInitStr.GpioMode = Gpio_Mode_IPU;
      GpioInit(SPI_FLASH_MISO_PORY_S, &gpioInitStr);
#endif

      GPIO_InitTypeDef GPIO_InitStructure;
      RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOC|RCC_APB2Periph_GPIOD, ENABLE);
   //Write_Protect PC6
      GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
      GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
      GPIO_Init(GPIOC, &GPIO_InitStructure);
   //Hold  PD15
      GPIO_InitStructure.GPIO_Pin = GPIO_Pin_15;
      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
      GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
      GPIO_Init(GPIOD, &GPIO_InitStructure);

      SPI_FLASH_Write_Protect_DISABLE();//flash 关闭写保护
      SPI_FLASH_Hold_DISABLE();//flash HOLD DISABLE
#endif

}