/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file    spi.c
  * @brief   This file provides code for the configuration
  *          of the SPI instances.
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2023 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "spi.h"

/* USER CODE BEGIN 0 */

#define EEPROM_SPI_Select()   (HAL_GPIO_WritePin(EEPROM_SPI_CS_Port, EEPROM_SPI_CS_Pin, GPIO_PIN_RESET))
#define EEPROM_SPI_Deselect() {HAL_GPIO_WritePin(EEPROM_SPI_CS_Port, EEPROM_SPI_CS_Pin, GPIO_PIN_SET);Delay_msec(1);}

#define EEPROM_COM_WRITE      0x02    //Write
#define EEPROM_COM_WRSR       0x01    //Write Status Register
#define EEPROM_COM_WREN       0x06    //Write Enable
#define EEPROM_COM_WRDI       0x04    //Write Disable
#define EEPROM_COM_READ       0x03    //Read
#define EEPROM_COM_RDSR       0x05    //Read Status Register

/* USER CODE END 0 */

SPI_HandleTypeDef hspi1;
SPI_HandleTypeDef hspi4;

/* SPI1 init function */
void MX_SPI1_Init(void)
{

  /* USER CODE BEGIN SPI1_Init 0 */

  /* USER CODE END SPI1_Init 0 */

  /* USER CODE BEGIN SPI1_Init 1 */

  /* USER CODE END SPI1_Init 1 */
  hspi1.Instance = SPI1;
  hspi1.Init.Mode = SPI_MODE_MASTER;
  hspi1.Init.Direction = SPI_DIRECTION_2LINES;
  hspi1.Init.DataSize = SPI_DATASIZE_8BIT;
  hspi1.Init.CLKPolarity = SPI_POLARITY_LOW;
  hspi1.Init.CLKPhase = SPI_PHASE_1EDGE;
  hspi1.Init.NSS = SPI_NSS_SOFT;
  hspi1.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_16;
  hspi1.Init.FirstBit = SPI_FIRSTBIT_MSB;
  hspi1.Init.TIMode = SPI_TIMODE_DISABLE;
  hspi1.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
  hspi1.Init.CRCPolynomial = 10;
  if (HAL_SPI_Init(&hspi1) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN SPI1_Init 2 */

  /* USER CODE END SPI1_Init 2 */

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

  /* USER CODE BEGIN SPI4_Init 0 */

  /* USER CODE END SPI4_Init 0 */

  /* USER CODE BEGIN SPI4_Init 1 */

  /* USER CODE END SPI4_Init 1 */
  hspi4.Instance = SPI4;
  hspi4.Init.Mode = SPI_MODE_MASTER;
  hspi4.Init.Direction = SPI_DIRECTION_2LINES;
  hspi4.Init.DataSize = SPI_DATASIZE_8BIT;
  hspi4.Init.CLKPolarity = SPI_POLARITY_LOW;
  hspi4.Init.CLKPhase = SPI_PHASE_1EDGE;
  hspi4.Init.NSS = SPI_NSS_HARD_OUTPUT;
  hspi4.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_2;
  hspi4.Init.FirstBit = SPI_FIRSTBIT_MSB;
  hspi4.Init.TIMode = SPI_TIMODE_DISABLE;
  hspi4.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
  hspi4.Init.CRCPolynomial = 10;
  if (HAL_SPI_Init(&hspi4) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN SPI4_Init 2 */

  /* USER CODE END SPI4_Init 2 */

}

void HAL_SPI_MspInit(SPI_HandleTypeDef* spiHandle)
{

  GPIO_InitTypeDef GPIO_InitStruct = {0};
  if(spiHandle->Instance==SPI1)
  {
  /* USER CODE BEGIN SPI1_MspInit 0 */

  /* USER CODE END SPI1_MspInit 0 */
    /* SPI1 clock enable */
    __HAL_RCC_SPI1_CLK_ENABLE();

    __HAL_RCC_GPIOB_CLK_ENABLE();
    /**SPI1 GPIO Configuration
    PB3     ------> SPI1_SCK
    PB4     ------> SPI1_MISO
    PB5     ------> SPI1_MOSI
    */
    GPIO_InitStruct.Pin = GPIO_PIN_3|GPIO_PIN_4;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
    GPIO_InitStruct.Alternate = GPIO_AF5_SPI1;
    HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

    GPIO_InitStruct.Pin = GPIO_PIN_5;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_PULLDOWN;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
    GPIO_InitStruct.Alternate = GPIO_AF5_SPI1;
    HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

    /* SPI1 interrupt Init */
    HAL_NVIC_SetPriority(SPI1_IRQn, 10, 0);
    HAL_NVIC_EnableIRQ(SPI1_IRQn);
  /* USER CODE BEGIN SPI1_MspInit 1 */

  /* USER CODE END SPI1_MspInit 1 */
  }
  else if(spiHandle->Instance==SPI4)
  {
  /* USER CODE BEGIN SPI4_MspInit 0 */

  /* USER CODE END SPI4_MspInit 0 */
    /* SPI4 clock enable */
    __HAL_RCC_SPI4_CLK_ENABLE();

    __HAL_RCC_GPIOG_CLK_ENABLE();
    /**SPI4 GPIO Configuration
    PG11     ------> SPI4_SCK
    PG12     ------> SPI4_MISO
    PG13     ------> SPI4_MOSI
    PG14     ------> SPI4_NSS
    */
    GPIO_InitStruct.Pin = GPIO_PIN_11|GPIO_PIN_12|GPIO_PIN_13|GPIO_PIN_14;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
    GPIO_InitStruct.Alternate = GPIO_AF6_SPI4;
    HAL_GPIO_Init(GPIOG, &GPIO_InitStruct);

    /* SPI4 interrupt Init */
    HAL_NVIC_SetPriority(SPI4_IRQn, 10, 0);
    HAL_NVIC_EnableIRQ(SPI4_IRQn);
  /* USER CODE BEGIN SPI4_MspInit 1 */

  /* USER CODE END SPI4_MspInit 1 */
  }
}

void HAL_SPI_MspDeInit(SPI_HandleTypeDef* spiHandle)
{

  if(spiHandle->Instance==SPI1)
  {
  /* USER CODE BEGIN SPI1_MspDeInit 0 */

  /* USER CODE END SPI1_MspDeInit 0 */
    /* Peripheral clock disable */
    __HAL_RCC_SPI1_CLK_DISABLE();

    /**SPI1 GPIO Configuration
    PB3     ------> SPI1_SCK
    PB4     ------> SPI1_MISO
    PB5     ------> SPI1_MOSI
    */
    HAL_GPIO_DeInit(GPIOB, GPIO_PIN_3|GPIO_PIN_4|GPIO_PIN_5);

    /* SPI1 interrupt Deinit */
    HAL_NVIC_DisableIRQ(SPI1_IRQn);
  /* USER CODE BEGIN SPI1_MspDeInit 1 */

  /* USER CODE END SPI1_MspDeInit 1 */
  }
  else 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
    PG11     ------> SPI4_SCK
    PG12     ------> SPI4_MISO
    PG13     ------> SPI4_MOSI
    PG14     ------> SPI4_NSS
    */
    HAL_GPIO_DeInit(GPIOG, GPIO_PIN_11|GPIO_PIN_12|GPIO_PIN_13|GPIO_PIN_14);

    /* SPI4 interrupt Deinit */
    HAL_NVIC_DisableIRQ(SPI4_IRQn);
  /* USER CODE BEGIN SPI4_MspDeInit 1 */

  /* USER CODE END SPI4_MspDeInit 1 */
  }
}

/* USER CODE BEGIN 1 */
void EEPROM_WriteEnable(void)
{
  uint8_t data = EEPROM_COM_WREN;

  EEPROM_SPI_Select();
  HAL_SPI_Transmit(EEPROM_SPI_PORT, &data, 1, 1);
  EEPROM_SPI_Deselect();
}

void EEPROM_WriteByte(uint16_t address, uint8_t data)
{
  static uint8_t send[4] = {EEPROM_COM_WRITE, 0, 0, 0};

  send[1]=(uint8_t)(address>>8);
  send[2]=(uint8_t)address;
  send[3]=data;

  EEPROM_WriteEnable();
  EEPROM_SPI_Select();
  HAL_SPI_Transmit(EEPROM_SPI_PORT, send, sizeof(send), 1);
  EEPROM_SPI_Deselect();

  Delay_msec(3);
}

void EEPROM_WritePage(uint16_t address, uint8_t data[], uint8_t size)
{
  static uint8_t send[3+EEPROM_PAGE_SIZE] = {EEPROM_COM_WRITE, 0, 0};

  send[1]=(uint8_t)(address>>8);
  send[2]=(uint8_t)address;
  for(int i=0; i<size; i++)   send[3+i]=*data++;

  EEPROM_WriteEnable();
  EEPROM_SPI_Select();
  HAL_SPI_Transmit(EEPROM_SPI_PORT, send, size+3, 1);
  EEPROM_SPI_Deselect();

  Delay_msec(3);
}

uint8_t EEPROM_ReadByte(uint16_t address)
{
  uint8_t ret;
  static uint8_t send[3] = {EEPROM_COM_READ, 0, 0};

  send[1]=(uint8_t)(address>>8);
  send[2]=(uint8_t)address;

  EEPROM_SPI_Select();
  HAL_SPI_Transmit(EEPROM_SPI_PORT, send, sizeof(send), 1);
  HAL_SPI_Receive (EEPROM_SPI_PORT, &ret, 1, 1);
  EEPROM_SPI_Deselect();

  return ret;
}

uint8_t EEPROM_ReadPage(uint16_t address, uint8_t data[], uint8_t size)
{
  static uint8_t send[3] = {EEPROM_COM_READ, 0, 0};

  if(size>EEPROM_PAGE_SIZE) size=EEPROM_PAGE_SIZE;

  send[1]=(uint8_t)(address>>8);
  send[2]=(uint8_t)address;

  EEPROM_SPI_Select();
  HAL_SPI_Transmit(EEPROM_SPI_PORT, send, sizeof(send), 1);
  HAL_SPI_Receive (EEPROM_SPI_PORT, data, size, 1);
  EEPROM_SPI_Deselect();

  return size;
}

/* USER CODE END 1 */