SDRAM demo, Think this is needed to store the audio and vibration before it gets wriitten to the SD.
Dependencies: BSP_DISCO_F769NI
main.cpp
- Committer:
- matthewlezcano
- Date:
- 2020-07-10
- Revision:
- 0:b1919ed2e9f3
File content as of revision 0:b1919ed2e9f3:
#include "mbed.h" #include "stm32f769i_discovery_lcd.h" #include "stm32f769i_discovery_sdram.h" static void Fill_Buffer(uint32_t *pBuffer, uint32_t uwBufferLenght, uint32_t uwOffset); static uint8_t Buffercmp(uint32_t *pBuffer1, uint32_t *pBuffer2, uint16_t BufferLength); #define BUFFER_SIZE ((uint32_t)0x0100) #define WRITE_READ_ADDR ((uint32_t)0x0800) #define SDRAM_WRITE_READ_ADDR ((uint32_t)0xC0177000) uint32_t sdram_aTxBuffer[BUFFER_SIZE]; uint32_t sdram_aRxBuffer[BUFFER_SIZE]; int main() { printf("\n\n SDRAM EXAMPLE FOR DISCO-F769NI START:\n"); /* Init LCD and display example information */ BSP_LCD_Init(); BSP_LCD_LayerDefaultInit(0, LCD_FB_START_ADDRESS); BSP_LCD_Clear(LCD_COLOR_WHITE); BSP_LCD_SetTextColor(LCD_COLOR_BLUE); BSP_LCD_FillRect(0, 0, BSP_LCD_GetXSize(), 40); BSP_LCD_SetTextColor(LCD_COLOR_WHITE); BSP_LCD_SetBackColor(LCD_COLOR_BLUE); BSP_LCD_SetFont(&Font24); BSP_LCD_DisplayStringAt(0, 0, (uint8_t *)"SDRAM basic example", CENTER_MODE); HAL_Delay(2000); /* SDRAM device configuration */ if (BSP_SDRAM_Init() != SDRAM_OK) { BSP_LCD_DisplayStringAt(20, 100, (uint8_t *)"SDRAM Initialization : FAILED", LEFT_MODE); } else { BSP_LCD_DisplayStringAt(20, 100, (uint8_t *)"SDRAM Initialization : OK", LEFT_MODE); } /* Fill the buffer to write */ Fill_Buffer(sdram_aTxBuffer, BUFFER_SIZE, 0xA244250F); HAL_Delay(2000); /* Write data to the SDRAM memory */ if (BSP_SDRAM_WriteData(SDRAM_WRITE_READ_ADDR + WRITE_READ_ADDR, sdram_aTxBuffer, BUFFER_SIZE) != SDRAM_OK) { BSP_LCD_DisplayStringAt(20, 130, (uint8_t *)"SDRAM WRITE : FAILED", LEFT_MODE); } else { BSP_LCD_DisplayStringAt(20, 130, (uint8_t *)"SDRAM WRITE : OK", LEFT_MODE); } HAL_Delay(2000); /* Read back data from the SDRAM memory */ if (BSP_SDRAM_ReadData(SDRAM_WRITE_READ_ADDR + WRITE_READ_ADDR, sdram_aRxBuffer, BUFFER_SIZE) != SDRAM_OK) { BSP_LCD_DisplayStringAt(20, 160, (uint8_t *)"SDRAM READ : FAILED", LEFT_MODE); } else { BSP_LCD_DisplayStringAt(20, 160, (uint8_t *)"SDRAM READ : OK", LEFT_MODE); } HAL_Delay(2000); if (Buffercmp(sdram_aTxBuffer, sdram_aRxBuffer, BUFFER_SIZE) > 0) { BSP_LCD_DisplayStringAt(20, 190, (uint8_t *)"SDRAM COMPARE : FAILED", LEFT_MODE); } else { BSP_LCD_DisplayStringAt(20, 190, (uint8_t *)"SDRAM Test : OK", LEFT_MODE); } while (1) { } } /** * @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(uint32_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(uint32_t *pBuffer1, uint32_t *pBuffer2, uint16_t BufferLength) { while (BufferLength--) { if (*pBuffer1 != *pBuffer2) { return 1; } pBuffer1++; pBuffer2++; } return 0; }