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/**
******************************************************************************
* @file BSP/Src/sram.c
* @author MCD Application Team
* @brief This example code shows how to use the SRAM Driver
******************************************************************************
* @attention
*
* Copyright (c) 2017 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.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "main.h"
/** @addtogroup STM32F4xx_HAL_Examples
* @{
*/
/** @addtogroup BSP
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define SRAM_WRITE_READ_ADDR_OFFSET ((uint32_t)0x0800)
#define SRAM_BUFFER_SIZE ((uint32_t)2048)
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
uint16_t sram_aTxBuffer[SRAM_BUFFER_SIZE];
uint16_t sram_aRxBuffer[SRAM_BUFFER_SIZE];
uint8_t ubSramWrite = 0, ubSramRead = 0, ubSramInit = 0, ubSramDmaWrite = 0, ubSramDmaRead = 0;
__IO uint32_t uwSramDMA_Transfer_Complete = 0;
/* Private function prototypes -----------------------------------------------*/
static void SRAM_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 SRAM Demo
* @param None
* @retval None
*/
void SRAM_demo (void)
{
SRAM_SetHint();
/*##-1- Configure the SRAM device ##########################################*/
/* SRAM device configuration */
if (BSP_SRAM_Init() != SRAM_OK)
{
ubSramInit++;
}
/*##-2- SRAM memory read/write access ######################################*/
/* Fill the buffer to write */
Fill_Buffer(sram_aTxBuffer, SRAM_BUFFER_SIZE, 0xC20F);
/* Write data to the SRAM memory */
if (BSP_SRAM_WriteData((SRAM_DEVICE_ADDR + SRAM_WRITE_READ_ADDR_OFFSET), sram_aTxBuffer, SRAM_BUFFER_SIZE) != SRAM_OK)
{
ubSramWrite++;
}
/* Read back data from the SRAM memory */
if (BSP_SRAM_ReadData((SRAM_DEVICE_ADDR + SRAM_WRITE_READ_ADDR_OFFSET), sram_aRxBuffer, SRAM_BUFFER_SIZE) != SRAM_OK)
{
ubSramRead++;
}
/*##-3- Checking data integrity ############################################*/
/* SDRAM initialization */
BSP_SDRAM_Init();
if (ubSramInit != 0)
{
BSP_LCD_DisplayStringAt(20, 100, (uint8_t *)"SRAM Initialization : FAILED.", LEFT_MODE);
BSP_LCD_DisplayStringAt(20, 115, (uint8_t *)"SRAM Test Aborted.", LEFT_MODE);
}
else
{
BSP_LCD_DisplayStringAt(20, 100, (uint8_t *)"SRAM Initialization : OK.", LEFT_MODE);
}
if (ubSramWrite != 0)
{
BSP_LCD_DisplayStringAt(20, 115, (uint8_t *)"SRAM WRITE : FAILED.", LEFT_MODE);
BSP_LCD_DisplayStringAt(20, 130, (uint8_t *)"SRAM Test Aborted.", LEFT_MODE);
}
else
{
BSP_LCD_DisplayStringAt(20, 115, (uint8_t *)"SRAM WRITE : OK.", LEFT_MODE);
}
if (ubSramRead != 0)
{
BSP_LCD_DisplayStringAt(20, 130, (uint8_t *)"SRAM READ : FAILED.", LEFT_MODE);
BSP_LCD_DisplayStringAt(20, 145, (uint8_t *)"SRAM Test Aborted.", LEFT_MODE);
}
else
{
BSP_LCD_DisplayStringAt(20, 130, (uint8_t *)"SRAM READ : OK.", LEFT_MODE);
}
if (Buffercmp(sram_aRxBuffer, sram_aTxBuffer, SRAM_BUFFER_SIZE) > 0)
{
BSP_LCD_DisplayStringAt(20, 145, (uint8_t *)"SRAM COMPARE : FAILED.", LEFT_MODE);
BSP_LCD_DisplayStringAt(20, 160, (uint8_t *)"SRAM Test Aborted.", LEFT_MODE);
}
else
{
BSP_LCD_DisplayStringAt(20, 145, (uint8_t *)"SRAM Test : OK.", LEFT_MODE);
}
/* Tempo to allow message display */
HAL_Delay(300);
/*##-4- SRAM memory DMAread/DMAwrite access ######################################*/
/* Disable the LCD to avoid the refresh from the SRAM */
if (BSP_SRAM_Init() != SRAM_OK)
{
ubSramInit++;
}
/* Fill the buffer to write with new values */
Fill_Buffer(sram_aTxBuffer, SRAM_BUFFER_SIZE, 0x1234);
uwSramDMA_Transfer_Complete = 0;
/* Write data to the SRAM memory through DMA */
if (BSP_SRAM_WriteData_DMA((SRAM_DEVICE_ADDR + SRAM_WRITE_READ_ADDR_OFFSET), sram_aTxBuffer, SRAM_BUFFER_SIZE) != SRAM_OK)
{
ubSramDmaWrite++;
}
/* Wait for the DMA write completion */
while (uwSramDMA_Transfer_Complete == 0)
{
/* infinite loop */
}
/* Read back data from the SRAM memory */
uwSramDMA_Transfer_Complete = 0;
if (BSP_SRAM_ReadData_DMA((SRAM_DEVICE_ADDR + SRAM_WRITE_READ_ADDR_OFFSET), sram_aRxBuffer, SRAM_BUFFER_SIZE) != SRAM_OK)
{
ubSramDmaRead++;
}
/* Wait for the DMA write completion */
while (uwSramDMA_Transfer_Complete == 0)
{
/* infinite loop */
}
/*##-5- Checking data integrity ############################################*/
/* SDRAM initialization */
BSP_SDRAM_Init();
if (ubSramDmaWrite != 0)
{
BSP_LCD_DisplayStringAt(20, 175, (uint8_t *)"SRAM DMA WRITE : FAILED.", LEFT_MODE);
BSP_LCD_DisplayStringAt(20, 190, (uint8_t *)"SRAM DMA Test Aborted.", LEFT_MODE);
}
else
{
BSP_LCD_DisplayStringAt(20, 175, (uint8_t *)"SRAM DMA WRITE : OK.", LEFT_MODE);
}
if (ubSramRead != 0)
{
BSP_LCD_DisplayStringAt(20, 190, (uint8_t *)"SRAM DMA READ : FAILED.", LEFT_MODE);
BSP_LCD_DisplayStringAt(20, 205, (uint8_t *)"SRAM DMA Test Aborted.", LEFT_MODE);
}
else
{
BSP_LCD_DisplayStringAt(20, 190, (uint8_t *)"SRAM DMA READ : OK.", LEFT_MODE);
}
if (Buffercmp(sram_aRxBuffer, sram_aTxBuffer, SRAM_BUFFER_SIZE) > 0)
{
BSP_LCD_DisplayStringAt(20, 205, (uint8_t *)"SRAM DMA COMPARE : FAILED.", LEFT_MODE);
BSP_LCD_DisplayStringAt(20, 220, (uint8_t *)"SRAM DMA Test Aborted.", LEFT_MODE);
}
else
{
BSP_LCD_DisplayStringAt(20, 205, (uint8_t *)"SRAM DMA Test : OK.", LEFT_MODE);
}
while (1)
{
if (CheckForUserInput() > 0)
{
return;
}
}
}
/**
* @brief Display SRAM Demo Hint
* @param None
* @retval None
*/
static void SRAM_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 *)"SRAM", 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 SRAM", 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 0: pBuffer identical to pBuffer1
* 1: 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;
}
/**
* @brief DMA transfer complete callback.
* @param hdma: pointer to a SRAM_HandleTypeDef structure that contains
* the configuration information for SRAM module.
* @retval None
*/
void HAL_SRAM_DMA_XferCpltCallback(DMA_HandleTypeDef *hdma)
{
uwSramDMA_Transfer_Complete++;
}
/**
* @brief DMA transfer complete error callback.
* @param hdma: pointer to a SRAM_HandleTypeDef structure that contains
* the configuration information for SRAM module.
* @retval None
*/
void HAL_SRAM_DMA_XferErrorCallback(DMA_HandleTypeDef *hdma)
{
BSP_LCD_SetTextColor(LCD_COLOR_RED);
BSP_LCD_DisplayStringAt(20, 215, (uint8_t *)"DMA ERROR", LEFT_MODE);
}
/**
* @}
*/
/**
* @}
*/