control/Src/spi.c

/**
  ******************************************************************************
  * File Name          : SPI.c
  * Description        : This file provides code for the configuration
  *                      of the SPI instances.
  ******************************************************************************
  * This notice applies to any and all portions of this file
  * that are not between comment pairs USER CODE BEGIN and
  * USER CODE END. Other portions of this file, whether 
  * inserted by the user or by software development tools
  * are owned by their respective copyright owners.
  *
  * Copyright (c) 2019 STMicroelectronics International N.V. 
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without 
  * modification, are permitted, provided that the following conditions are met:
  *
  * 1. Redistribution of source code must retain the above copyright notice, 
  *    this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright notice,
  *    this list of conditions and the following disclaimer in the documentation
  *    and/or other materials provided with the distribution.
  * 3. Neither the name of STMicroelectronics nor the names of other 
  *    contributors to this software may be used to endorse or promote products 
  *    derived from this software without specific written permission.
  * 4. This software, including modifications and/or derivative works of this 
  *    software, must execute solely and exclusively on microcontroller or
  *    microprocessor devices manufactured by or for STMicroelectronics.
  * 5. Redistribution and use of this software other than as permitted under 
  *    this license is void and will automatically terminate your rights under 
  *    this license. 
  *
  * THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS" 
  * AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT 
  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A 
  * PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
  * RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT 
  * SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 
  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 
  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 
  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  ******************************************************************************
  */

/* Includes ------------------------------------------------------------------*/
#include "spi.h"

/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

SPI_HandleTypeDef hspi4;

/* SPI4 init function */
void MX_SPI4_Init(void)
{

  hspi4.Instance = SPI4;
  hspi4.Init.Mode = SPI_MODE_MASTER;//主模式
  hspi4.Init.Direction = SPI_DIRECTION_2LINES;//全双工
  hspi4.Init.DataSize = SPI_DATASIZE_8BIT;//数据位为8位
  hspi4.Init.CLKPolarity = SPI_POLARITY_LOW;//CPOL=0,low
  hspi4.Init.CLKPhase = SPI_PHASE_1EDGE;//CPHA为数据线的第一个变化沿
  hspi4.Init.NSS = SPI_NSS_SOFT;//软件控制NSS
  hspi4.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_256;//256分频，54M/256=Hz
  hspi4.Init.FirstBit = SPI_FIRSTBIT_MSB;//最高位先发送
  hspi4.Init.TIMode = SPI_TIMODE_DISABLE;//TIMODE模式关闭
  hspi4.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;//CRC关闭
  hspi4.Init.CRCPolynomial = 7;//CRC值计算的多项式
  hspi4.Init.CRCLength = SPI_CRC_LENGTH_DATASIZE;
  hspi4.Init.NSSPMode = SPI_NSS_PULSE_DISABLE;
  if (HAL_SPI_Init(&hspi4) != HAL_OK)
  {
    Error_Handler();
  }

}

void HAL_SPI_MspInit(SPI_HandleTypeDef* spiHandle)
{

  GPIO_InitTypeDef GPIO_InitStruct = {0};
  if(spiHandle->Instance==SPI4)
  {
  /* USER CODE BEGIN SPI4_MspInit 0 */

  /* USER CODE END SPI4_MspInit 0 */
    /* SPI4 clock enable */
    __HAL_RCC_SPI4_CLK_ENABLE();//使能SPI4时钟
  
    __HAL_RCC_GPIOE_CLK_ENABLE();
    /**SPI4 GPIO Configuration    
    PE12     ------> SPI4_SCK
    PE13     ------> SPI4_MISO
    PE14     ------> SPI4_MOSI 
    */
    GPIO_InitStruct.Pin = SPI4_FM25_SCK_Pin|SPI4_FM25_MISO_Pin|SPI4_FM25_MOSI_Pin;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;//复用推挽输出
    GPIO_InitStruct.Pull = GPIO_PULLUP;//上拉
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;//快速
    GPIO_InitStruct.Alternate = GPIO_AF5_SPI4;
    HAL_GPIO_Init(GPIOE, &GPIO_InitStruct);//配置SPI的数据线和时钟线

  /* USER CODE BEGIN SPI4_MspInit 1 */

  /* USER CODE END SPI4_MspInit 1 */
  }
}

void HAL_SPI_MspDeInit(SPI_HandleTypeDef* spiHandle)
{

  if(spiHandle->Instance==SPI4)
  {
  /* USER CODE BEGIN SPI4_MspDeInit 0 */

  /* USER CODE END SPI4_MspDeInit 0 */
    /* Peripheral clock disable */
    __HAL_RCC_SPI4_CLK_DISABLE();
  
    /**SPI4 GPIO Configuration    
    PE12     ------> SPI4_SCK
    PE13     ------> SPI4_MISO
    PE14     ------> SPI4_MOSI 
    */
    HAL_GPIO_DeInit(GPIOE, SPI4_FM25_SCK_Pin|SPI4_FM25_MISO_Pin|SPI4_FM25_MOSI_Pin);

  /* USER CODE BEGIN SPI4_MspDeInit 1 */

  /* USER CODE END SPI4_MspDeInit 1 */
  }
} 

/* USER CODE BEGIN 1 */
//SPI4 读写一个字节
//TxData:要写入的字节
//返回值:读取到的字节
uint8_t SPI4_ReadWriteByte(uint8_t TxData)
{
    uint8_t Rxdata;
    HAL_SPI_TransmitReceive(&hspi4,&TxData,&Rxdata,1, 1000);       
 	return Rxdata;          		    //返回收到的数据		
}
void FM25L16B_Init(void)
{
	FM_CS_1;
	MX_SPI4_Init();
}
/****************************************************
****函数名称：void FM25L16B_WriteByte(uint16_t addr,uint8_t data)
****函数作用：向指定地址写入一个字节数据
****输入参数：addr,指定地址   data  要写入的数据
****输出参数：
****************************************************/
void FM25L16B_WriteByte(uint16_t addr,uint8_t data)
{
	uint8_t addr_h,addr_l;
	
	addr_h=addr>>8;
	addr_l=addr&0xff;
	FM_CS_0;
	
	SPI4_ReadWriteByte(FM_WREN);	//写使能命令
	FM_CS_1;
	FM_CS_0;
	SPI4_ReadWriteByte(FM_WRITE);	//写数据命令
	SPI4_ReadWriteByte(addr_h);	//起始地址高8位
	SPI4_ReadWriteByte(addr_l);	//起始地址低8位
	SPI4_ReadWriteByte(data);
	FM_CS_1;
}

/****************************************************
****函数名称：uint8_t FM25L16B_ReadByte(uint16_t addr)
****函数作用：读取指定地址的一个字节数据
****输入参数：addr 要读取的地址
****输出返回：当前地址数据值
****添加说明：没写入的地址数据默认是0x00.
****************************************************/
uint8_t FM25L16B_ReadByte(uint16_t addr)
{
	uint8_t addr_h,addr_l;
	uint8_t data=0;
	
	addr_h=addr>>8;
	addr_l=addr&0xff;
	FM_CS_0;
	SPI4_ReadWriteByte(FM_READ);	//读数据命令
	SPI4_ReadWriteByte(addr_h);	//起始地址高8位
	SPI4_ReadWriteByte(addr_l);	//起始地址低8位
	data=SPI4_ReadWriteByte(0xff);
	
	FM_CS_1;
	return data;
}

/****************************************************
****函数名称：uint8_t FM25L16B_ReadStatus(void)
****函数作用：读取状态寄存器
****输入参数：
****输出参数：状态寄存器值
****************************************************/
uint8_t FM25L16B_ReadStatus(void)
{
	uint8_t data=0;
	
	FM_CS_0;
	SPI4_ReadWriteByte(FM_RDSR);	//读状态寄存器命令
	data=SPI4_ReadWriteByte(0xff);
	
	FM_CS_1;
	return data;
}
/****************************************************
****函数名称：void FM25L16B_WriteStatus(uint8_t data)
****函数作用：写状态寄存器
****输入参数：要写入的数据
****输出参数：
****************************************************/
void FM25L16B_WriteStatus(uint8_t data)
{
	FM_CS_0;
	
	SPI4_ReadWriteByte(FM_WREN);	//写使能命令
	FM_CS_1;
	FM_CS_0;
	SPI4_ReadWriteByte(FM_WRSR);	//写状态寄存器命令
	SPI4_ReadWriteByte(data);	//起始地址高8位
	
	FM_CS_1;
}
/****************************************************
****函数名称：void FM25L16B_Write_N_Bytes(uint16_t addr,uint8_t *data,uint16_t num)
****函数作用：写数据到指定地址
****输入参数：addr 起始地址；data 要写入的数据；num 数据长度
****输出参数：
****************************************************/
void FM25L16B_Write_N_Bytes(uint16_t addr,uint8_t *data,uint16_t num)
{
	uint16_t i=0;
	
	FM_CS_0;
	SPI4_ReadWriteByte(FM_WREN);	//写使能命令
	FM_CS_1;
	FM_CS_0;
	SPI4_ReadWriteByte(FM_WRITE);	//写数据命令
	SPI4_ReadWriteByte(addr>>8);	//起始地址高8位
	SPI4_ReadWriteByte(addr&0xff);	//起始地址低8位
	
	for(i=0;i<num;i++)
	{
		SPI4_ReadWriteByte(data[i]);
	}
	FM_CS_1;
}

/****************************************************
****函数名称：void FM25L16B_Read_N_Bytes(uint16_t addr,uint8_t *data,uint16_t num)
****函数作用：从指定地址读取数据
****输入参数：addr 起始地址；data,数据缓存区； num 数据长度
****输出参数：
****************************************************/
void FM25L16B_Read_N_Bytes(uint16_t addr,uint8_t *data,uint16_t num)
{
	uint16_t i=0;
	
	FM_CS_0;
	SPI4_ReadWriteByte(FM_READ);	//读数据命令
	SPI4_ReadWriteByte(addr>>8);	//起始地址高8位
	SPI4_ReadWriteByte(addr&0xff);	//起始地址低8位
	
	for(i=0;i<num;i++)
	{
		data[i]=SPI4_ReadWriteByte(0xff);
	}
	FM_CS_1;
}

/* USER CODE END 1 */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/