File content as of revision 1:61482ef96890:

#include "mbed.h"
#include "stm32f413h_discovery.h"
#include "stm32f413h_discovery_lcd.h"
#include "stm32f413h_discovery_psram.h"

#define BUFFER_SIZE         ((uint32_t)0x1000)
#define PSRAM_WRITE_READ_ADDR     ((uint32_t)0x0800)

uint16_t sram_aTxBuffer[BUFFER_SIZE];
uint16_t sram_aRxBuffer[BUFFER_SIZE];

uint8_t ubSramWrite = 0, ubSramRead = 0, ubSramInit = 0, ubCompare = 0;
__IO uint8_t  write_complete = 0;

static void print_demo_title(void);
static void Fill_Buffer(uint16_t *pBuffer, uint32_t uwBufferLength, uint32_t uwOffset);
static uint8_t Buffercmp(uint16_t* pBuffer1, uint16_t* pBuffer2, uint16_t BufferLength);

int main()
{
  print_demo_title();

  /*##-1- Configure the PSRAM device ##########################################*/
  if (BSP_PSRAM_Init() != PSRAM_OK)
  {
    ubSramInit++;
  }

  /*##-2- PSRAM memory read/write access ######################################*/
  /* Fill the buffer to write */
  Fill_Buffer(sram_aTxBuffer, BUFFER_SIZE, 0xC20F);

  /* Write data to the PSRAM memory */
  if (BSP_PSRAM_WriteData(PSRAM_DEVICE_ADDR + PSRAM_WRITE_READ_ADDR, sram_aTxBuffer, BUFFER_SIZE) != PSRAM_OK)
  {
    ubSramWrite++;
  }

  /* Read back data from the PSRAM memory */
  if (BSP_PSRAM_ReadData(PSRAM_DEVICE_ADDR + PSRAM_WRITE_READ_ADDR, sram_aRxBuffer, BUFFER_SIZE) != PSRAM_OK)
  {
    ubSramRead++;
  }

  /*##-3- Checking data integrity ############################################*/
  /* Enable the LCD */
  BSP_LCD_DisplayOn();

  if (ubSramInit != 0)
  {
    BSP_LCD_DisplayStringAt(20, 100, (uint8_t *)"PSRAM Initialization FAIL", LEFT_MODE);
    BSP_LCD_DisplayStringAt(20, 115, (uint8_t *)"PSRAM Test Aborted", LEFT_MODE);
    while(1);
  }
  else
  {
    BSP_LCD_DisplayStringAt(20, 100, (uint8_t *)"PSRAM Initialization OK", LEFT_MODE);
  }
  
  if (ubSramWrite != 0)
  {
    BSP_LCD_DisplayStringAt(20, 115, (uint8_t *)"PSRAM WRITE FAIL", LEFT_MODE);
    BSP_LCD_DisplayStringAt(20, 130, (uint8_t *)"PSRAM Test Aborted", LEFT_MODE);
    while(1);
  }
  else
  {
    BSP_LCD_DisplayStringAt(20, 115, (uint8_t *)"PSRAM WRITE OK", LEFT_MODE);
  }

  if (ubSramRead != 0)
  {
    BSP_LCD_DisplayStringAt(20, 130, (uint8_t *)"PSRAM READ FAIL", LEFT_MODE);
    BSP_LCD_DisplayStringAt(20, 145, (uint8_t *)"PSRAM Test Aborted", LEFT_MODE);
    while(1);
  }
  else
  {
    BSP_LCD_DisplayStringAt(20, 130, (uint8_t *)"PSRAM READ OK", LEFT_MODE);
  }

  if (Buffercmp(sram_aRxBuffer, sram_aTxBuffer, BUFFER_SIZE) > 0)
  {
    BSP_LCD_DisplayStringAt(20, 145, (uint8_t *)"PSRAM COMPARE FAIL", LEFT_MODE);
    BSP_LCD_DisplayStringAt(20, 160, (uint8_t *)"PSRAM Test Aborted", LEFT_MODE);
    while(1);
  }
  else
  {
    BSP_LCD_DisplayStringAt(20, 145, (uint8_t *)"PSRAM Test OK", LEFT_MODE);
  }

  BSP_LCD_DisplayStringAt(0, 200, (uint8_t *)"Demo finished OK", CENTER_MODE);
  while(1);
}

static void print_demo_title(void)
{
  BSP_LCD_Init();

  /* Clear the LCD */
  BSP_LCD_Clear(LCD_COLOR_WHITE);

  /* Set LCD Demo description */
  BSP_LCD_SetTextColor(LCD_COLOR_GREEN);
  BSP_LCD_FillRect(0, 0, BSP_LCD_GetXSize(), 80);
  BSP_LCD_SetTextColor(LCD_COLOR_BLACK);
  BSP_LCD_SetBackColor(LCD_COLOR_GREEN);
  BSP_LCD_SetFont(&Font24);
  BSP_LCD_DisplayStringAt(0, 0, (uint8_t *)"PSRAM", 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 the PSRAM", CENTER_MODE);

   /* Set the LCD Text Color */
  BSP_LCD_SetTextColor(LCD_COLOR_GREEN);
  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);
  
  /* Disable the LCD to avoid refresh from the SDRAM */
  BSP_LCD_DisplayOff();
}

/**
  * @brief  Fills buffer with user predefined data.
  * @param  pBuffer: pointer on the buffer to fill
  * @param  uwBufferLength: 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 uwBufferLength, uint32_t uwOffset)
{
  uint32_t tmpindex = 0;

  /* Put in global buffer different values */
  for (tmpindex = 0; tmpindex < uwBufferLength; 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;
}