/**
  ******************************************************************************
  * @file    BSP/Src/nor.c 
  * @author  MCD Application Team
  * @brief   This example code shows how to use the NOR Driver
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
  *
  * Redistribution and use in source and binary forms, with or without modification,
  * are permitted provided that the following conditions are met:
  *   1. Redistributions 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 its contributors
  *      may be used to endorse or promote products derived from this software
  *      without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER 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
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  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  ******************************************************************************
  */

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

/** @addtogroup STM32F4xx_HAL_Examples
  * @{
  */

/** @addtogroup BSP
  * @{
  */ 

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define BUFFER_SIZE         ((uint32_t)0x0100)
#define WRITE_READ_ADDR     ((uint32_t)0x0800)

/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
uint16_t nor_aTxBuffer[BUFFER_SIZE];
uint16_t nor_aRxBuffer[BUFFER_SIZE];
uint8_t ubIDStatus = 0, ubEraseStatus = 0, ubWriteStatus = 0, ubReadStatus = 0, ubInitStatus = 0;

/* Private function prototypes -----------------------------------------------*/
static void NOR_SetHint(void);
static void Fill_Buffer(uint16_t *pBuffer, uint32_t uwBufferLenght, uint32_t uwOffset);
static uint8_t Buffercmp(uint16_t* pBuffer1, uint16_t* pBuffer2, uint16_t BufferLength);

/* Private functions ---------------------------------------------------------*/

/**
  * @brief  NOR Demo
  * @param  None
  * @retval None
  */
void NOR_demo(void)
{ 
  /* NOR IDs structure */
  static NOR_IDTypeDef pNOR_ID;

  NOR_SetHint();

  /* STM32F427x/437x/429x/439x "Revision 3" devices: FMC dynamic and static 
     bank switching is allowed  */
  if (HAL_GetREVID() >= 0x2000) {}
  else
  {
    /* Disable the LCD to avoid the refrech from the SDRAM */
    BSP_LCD_DisplayOff();
  }
  
  /*##-1- Configure the NOR device ###########################################*/
  /* NOR device configuration */ 
  if(BSP_NOR_Init() != NOR_STATUS_OK)
  {
    ubInitStatus++; 
  }
  
  /*##-2- Read & check the NOR device IDs ####################################*/
  /* Initialize the ID structure */
  pNOR_ID.Manufacturer_Code = (uint16_t)0x00;
  pNOR_ID.Device_Code1 = (uint16_t)0x00;
  pNOR_ID.Device_Code2 = (uint16_t)0x00;
  pNOR_ID.Device_Code3 = (uint16_t)0x00;
  
  /* Read the NOR memory ID */
  BSP_NOR_Read_ID(&pNOR_ID);
  
  /* Test the NOR ID correctness */
  if(pNOR_ID.Manufacturer_Code != (uint16_t)0x0020)
    ubIDStatus++;
  else if(pNOR_ID.Device_Code1 != (uint16_t)0x227E)
    ubIDStatus++;
  else if (pNOR_ID.Device_Code2 != (uint16_t)0x2221)
    ubIDStatus++;
  else if (pNOR_ID.Device_Code3 != (uint16_t)0x2200)
    ubIDStatus++;
    
  /*##-3- Erase NOR memory ###################################################*/ 
  /* Return to read mode */
  BSP_NOR_ReturnToReadMode();
    
  if(BSP_NOR_Erase_Block(WRITE_READ_ADDR) != NOR_STATUS_OK)
  {
    ubEraseStatus++; 
  }
  
  /*##-4- NOR memory read/write access  ######################################*/   
  /* Fill the buffer to write */
  Fill_Buffer(nor_aTxBuffer, BUFFER_SIZE, 0xC20F);   
  
  /* Write data to the NOR memory */
  if(BSP_NOR_WriteData(WRITE_READ_ADDR, nor_aTxBuffer, BUFFER_SIZE) != NOR_STATUS_OK)
  {
    ubWriteStatus++; 
  }
  
  /* Read back data from the NOR memory */
  if(BSP_NOR_ReadData(WRITE_READ_ADDR, nor_aRxBuffer, BUFFER_SIZE) != NOR_STATUS_OK)
  {
    ubReadStatus++; 
  }

  /*##-5- Checking data integrity ############################################*/  
  /* STM32F427x/437x/429x/439x "Revision 3" devices: FMC dynamic and static 
     bank switching is allowed  */
  if (HAL_GetREVID() >= 0x2000) {}
  else
  {
    /* Enable the LCD */
    BSP_LCD_DisplayOn();
    
    /* SDRAM initialization */
    BSP_SDRAM_Init();
  }
  
  if(ubIDStatus != 0)
  {
    BSP_LCD_DisplayStringAt(20, 100, (uint8_t *)"NOR Read ID : FAILED.", LEFT_MODE);
    BSP_LCD_DisplayStringAt(20, 115, (uint8_t *)"NOR Test Aborted.", LEFT_MODE);
  }
  else
  {
    if(ubInitStatus != 0)
    {
      BSP_LCD_DisplayStringAt(20, 100, (uint8_t *)"NOR Initialization : FAILED.", LEFT_MODE);
      BSP_LCD_DisplayStringAt(20, 115, (uint8_t *)"NOR Test Aborted.", LEFT_MODE);
    }
    else
    {
      BSP_LCD_DisplayStringAt(20, 100, (uint8_t *)"NOR Initialization : OK.", LEFT_MODE);
    }  
    if(ubEraseStatus != 0)
    {
      BSP_LCD_DisplayStringAt(20, 115, (uint8_t *)"NOR ERASE : FAILED.", LEFT_MODE);
      BSP_LCD_DisplayStringAt(20, 130, (uint8_t *)"NOR Test Aborted.", LEFT_MODE);
    }
    else
    {
      BSP_LCD_DisplayStringAt(20, 115, (uint8_t *)"NOR ERASE : OK.   ", LEFT_MODE);
    }
    if(ubWriteStatus != 0)
    {
      BSP_LCD_DisplayStringAt(20, 130, (uint8_t *)"NOR WRITE : FAILED.", LEFT_MODE);
      BSP_LCD_DisplayStringAt(20, 145, (uint8_t *)"NOR Test Aborted.", LEFT_MODE);
    }
    else
    {
      BSP_LCD_DisplayStringAt(20, 130, (uint8_t *)"NOR WRITE : OK.     ", LEFT_MODE);
    }
    if(ubReadStatus != 0)
    {
      BSP_LCD_DisplayStringAt(20, 145, (uint8_t *)"NOR READ : FAILED.", LEFT_MODE);
      BSP_LCD_DisplayStringAt(20, 160, (uint8_t *)"NOR Test Aborted.", LEFT_MODE);
    }
    else
    {
      BSP_LCD_DisplayStringAt(20, 145, (uint8_t *)"NOR READ :  OK.    ", LEFT_MODE);
    }    
    if(Buffercmp(nor_aRxBuffer, nor_aTxBuffer, BUFFER_SIZE) > 0)
    {
      BSP_LCD_DisplayStringAt(20, 160, (uint8_t *)"NOR COMPARE : FAILED.", LEFT_MODE);
      BSP_LCD_DisplayStringAt(20, 175, (uint8_t *)"NOR Test Aborted.", LEFT_MODE);
    }
    else
    {    
      BSP_LCD_DisplayStringAt(20, 160, (uint8_t *)"NOR Test : OK.     ", LEFT_MODE);
    }
  }
  
  while (1)
  {    
    if(CheckForUserInput() > 0)
    {
      return;
    }
  }
}

/**
  * @brief  Display NOR Demo Hint
  * @param  None
  * @retval None
  */
static void NOR_SetHint(void)
{
  /* Clear the LCD */ 
  BSP_LCD_Clear(LCD_COLOR_WHITE);
  
  /* Set LCD Demo description */
  BSP_LCD_SetTextColor(LCD_COLOR_BLUE);
  BSP_LCD_FillRect(0, 0, BSP_LCD_GetXSize(), 80);
  BSP_LCD_SetTextColor(LCD_COLOR_WHITE);
  BSP_LCD_SetBackColor(LCD_COLOR_BLUE); 
  BSP_LCD_SetFont(&Font24);
  BSP_LCD_DisplayStringAt(0, 0, (uint8_t *)"NOR", CENTER_MODE);
  BSP_LCD_SetFont(&Font12);
  BSP_LCD_DisplayStringAt(0, 30, (uint8_t *)"This example shows how to write", CENTER_MODE);
  BSP_LCD_DisplayStringAt(0, 45, (uint8_t *)"and read data on NOR", CENTER_MODE);
  
  /* Set the LCD Text Color */
  BSP_LCD_SetTextColor(LCD_COLOR_BLUE);  
  BSP_LCD_DrawRect(10, 90, BSP_LCD_GetXSize() - 20, BSP_LCD_GetYSize()- 100);
  BSP_LCD_DrawRect(11, 91, BSP_LCD_GetXSize() - 22, BSP_LCD_GetYSize()- 102);
  
  BSP_LCD_SetTextColor(LCD_COLOR_BLACK);
  BSP_LCD_SetBackColor(LCD_COLOR_WHITE); 
}

/**
  * @brief  Fills buffer with user predefined data.
  * @param  pBuffer: pointer on the buffer to fill
  * @param  uwBufferLenght: size of the buffer to fill
  * @param  uwOffset: first value to fill on the buffer
  * @retval None
  */
static void Fill_Buffer(uint16_t *pBuffer, uint32_t uwBufferLenght, uint32_t uwOffset)
{
  uint32_t tmpIndex = 0;
  
  /* Put in global buffer different values */
  for (tmpIndex = 0; tmpIndex < uwBufferLenght; tmpIndex++ )
  {
    pBuffer[tmpIndex] = tmpIndex + uwOffset;
  }
}

/**
  * @brief  Compares two buffers.
  * @param  pBuffer1, pBuffer2: buffers to be compared.
  * @param  BufferLength: buffer's length
  * @retval 1: pBuffer identical to pBuffer1
  *         0: pBuffer differs from pBuffer1
  */
static uint8_t Buffercmp(uint16_t* pBuffer1, uint16_t* pBuffer2, uint16_t BufferLength)
{
  while (BufferLength--)
  {
    if (*pBuffer1 != *pBuffer2)
    {
      return 1;
    }
    
    pBuffer1++;
    pBuffer2++;
  }
  
  return 0;
}

/**
  * @}
  */ 

/**
  * @}
  */ 

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