ST / Mbed OS DISCO-F769NI_SDRAM_demo

SDRAM basic example for DISCO-F769NI

Dependencies:   BSP_DISCO_F769NI

main.cpp@2:0cfdd4157b1e, 2019-11-15 (annotated)

Committer:
Jerome Coutant
Date:
Fri Nov 15 16:39:35 2019 +0100
Revision:
2:0cfdd4157b1e
Parent:
0:c18d9a07a0d8 
Update with STM32Cube_FW_F7_V1.15.0

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jeromecoutant 0:c18d9a07a0d8 1 #include "mbed.h"
jeromecoutant 0:c18d9a07a0d8 2 #include "stm32f769i_discovery_lcd.h"
jeromecoutant 0:c18d9a07a0d8 3 #include "stm32f769i_discovery_sdram.h"
jeromecoutant 0:c18d9a07a0d8 4
jeromecoutant 0:c18d9a07a0d8 5 static void Fill_Buffer(uint32_t *pBuffer, uint32_t uwBufferLenght, uint32_t uwOffset);
Jerome Coutant 2:0cfdd4157b1e 6 static uint8_t Buffercmp(uint32_t *pBuffer1, uint32_t *pBuffer2, uint16_t BufferLength);
jeromecoutant 0:c18d9a07a0d8 7
jeromecoutant 0:c18d9a07a0d8 8 #define BUFFER_SIZE ((uint32_t)0x0100)
jeromecoutant 0:c18d9a07a0d8 9 #define WRITE_READ_ADDR ((uint32_t)0x0800)
jeromecoutant 0:c18d9a07a0d8 10 #define SDRAM_WRITE_READ_ADDR ((uint32_t)0xC0177000)
jeromecoutant 0:c18d9a07a0d8 11
jeromecoutant 0:c18d9a07a0d8 12 uint32_t sdram_aTxBuffer[BUFFER_SIZE];
jeromecoutant 0:c18d9a07a0d8 13 uint32_t sdram_aRxBuffer[BUFFER_SIZE];
jeromecoutant 0:c18d9a07a0d8 14
jeromecoutant 0:c18d9a07a0d8 15 int main()
jeromecoutant 0:c18d9a07a0d8 16 {
jeromecoutant 0:c18d9a07a0d8 17 printf("\n\n SDRAM EXAMPLE FOR DISCO-F769NI START:\n");
jeromecoutant 0:c18d9a07a0d8 18
jeromecoutant 0:c18d9a07a0d8 19 /* Init LCD and display example information */
jeromecoutant 0:c18d9a07a0d8 20 BSP_LCD_Init();
jeromecoutant 0:c18d9a07a0d8 21 BSP_LCD_LayerDefaultInit(0, LCD_FB_START_ADDRESS);
jeromecoutant 0:c18d9a07a0d8 22 BSP_LCD_Clear(LCD_COLOR_WHITE);
jeromecoutant 0:c18d9a07a0d8 23 BSP_LCD_SetTextColor(LCD_COLOR_BLUE);
jeromecoutant 0:c18d9a07a0d8 24 BSP_LCD_FillRect(0, 0, BSP_LCD_GetXSize(), 40);
jeromecoutant 0:c18d9a07a0d8 25 BSP_LCD_SetTextColor(LCD_COLOR_WHITE);
jeromecoutant 0:c18d9a07a0d8 26 BSP_LCD_SetBackColor(LCD_COLOR_BLUE);
jeromecoutant 0:c18d9a07a0d8 27 BSP_LCD_SetFont(&Font24);
jeromecoutant 0:c18d9a07a0d8 28 BSP_LCD_DisplayStringAt(0, 0, (uint8_t *)"SDRAM basic example", CENTER_MODE);
jeromecoutant 0:c18d9a07a0d8 29
Jerome Coutant 2:0cfdd4157b1e 30 HAL_Delay(2000);
Jerome Coutant 2:0cfdd4157b1e 31
jeromecoutant 0:c18d9a07a0d8 32 /* SDRAM device configuration */
Jerome Coutant 2:0cfdd4157b1e 33 if (BSP_SDRAM_Init() != SDRAM_OK) {
jeromecoutant 0:c18d9a07a0d8 34 BSP_LCD_DisplayStringAt(20, 100, (uint8_t *)"SDRAM Initialization : FAILED", LEFT_MODE);
jeromecoutant 0:c18d9a07a0d8 35 } else {
jeromecoutant 0:c18d9a07a0d8 36 BSP_LCD_DisplayStringAt(20, 100, (uint8_t *)"SDRAM Initialization : OK", LEFT_MODE);
jeromecoutant 0:c18d9a07a0d8 37 }
jeromecoutant 0:c18d9a07a0d8 38 /* Fill the buffer to write */
jeromecoutant 0:c18d9a07a0d8 39 Fill_Buffer(sdram_aTxBuffer, BUFFER_SIZE, 0xA244250F);
jeromecoutant 0:c18d9a07a0d8 40
Jerome Coutant 2:0cfdd4157b1e 41 HAL_Delay(2000);
Jerome Coutant 2:0cfdd4157b1e 42
jeromecoutant 0:c18d9a07a0d8 43 /* Write data to the SDRAM memory */
Jerome Coutant 2:0cfdd4157b1e 44 if (BSP_SDRAM_WriteData(SDRAM_WRITE_READ_ADDR + WRITE_READ_ADDR, sdram_aTxBuffer, BUFFER_SIZE) != SDRAM_OK) {
jeromecoutant 0:c18d9a07a0d8 45 BSP_LCD_DisplayStringAt(20, 130, (uint8_t *)"SDRAM WRITE : FAILED", LEFT_MODE);
jeromecoutant 0:c18d9a07a0d8 46 } else {
jeromecoutant 0:c18d9a07a0d8 47 BSP_LCD_DisplayStringAt(20, 130, (uint8_t *)"SDRAM WRITE : OK", LEFT_MODE);
jeromecoutant 0:c18d9a07a0d8 48 }
jeromecoutant 0:c18d9a07a0d8 49
Jerome Coutant 2:0cfdd4157b1e 50 HAL_Delay(2000);
Jerome Coutant 2:0cfdd4157b1e 51
jeromecoutant 0:c18d9a07a0d8 52 /* Read back data from the SDRAM memory */
Jerome Coutant 2:0cfdd4157b1e 53 if (BSP_SDRAM_ReadData(SDRAM_WRITE_READ_ADDR + WRITE_READ_ADDR, sdram_aRxBuffer, BUFFER_SIZE) != SDRAM_OK) {
jeromecoutant 0:c18d9a07a0d8 54 BSP_LCD_DisplayStringAt(20, 160, (uint8_t *)"SDRAM READ : FAILED", LEFT_MODE);
jeromecoutant 0:c18d9a07a0d8 55 } else {
jeromecoutant 0:c18d9a07a0d8 56 BSP_LCD_DisplayStringAt(20, 160, (uint8_t *)"SDRAM READ : OK", LEFT_MODE);
jeromecoutant 0:c18d9a07a0d8 57 }
jeromecoutant 0:c18d9a07a0d8 58
Jerome Coutant 2:0cfdd4157b1e 59 HAL_Delay(2000);
Jerome Coutant 2:0cfdd4157b1e 60
Jerome Coutant 2:0cfdd4157b1e 61 if (Buffercmp(sdram_aTxBuffer, sdram_aRxBuffer, BUFFER_SIZE) > 0) {
jeromecoutant 0:c18d9a07a0d8 62 BSP_LCD_DisplayStringAt(20, 190, (uint8_t *)"SDRAM COMPARE : FAILED", LEFT_MODE);
jeromecoutant 0:c18d9a07a0d8 63 } else {
jeromecoutant 0:c18d9a07a0d8 64 BSP_LCD_DisplayStringAt(20, 190, (uint8_t *)"SDRAM Test : OK", LEFT_MODE);
jeromecoutant 0:c18d9a07a0d8 65 }
jeromecoutant 0:c18d9a07a0d8 66
jeromecoutant 0:c18d9a07a0d8 67 while (1) {
jeromecoutant 0:c18d9a07a0d8 68
jeromecoutant 0:c18d9a07a0d8 69 }
jeromecoutant 0:c18d9a07a0d8 70 }
jeromecoutant 0:c18d9a07a0d8 71
jeromecoutant 0:c18d9a07a0d8 72
jeromecoutant 0:c18d9a07a0d8 73 /**
jeromecoutant 0:c18d9a07a0d8 74 * @brief Fills buffer with user predefined data.
jeromecoutant 0:c18d9a07a0d8 75 * @param pBuffer: pointer on the buffer to fill
jeromecoutant 0:c18d9a07a0d8 76 * @param uwBufferLenght: size of the buffer to fill
jeromecoutant 0:c18d9a07a0d8 77 * @param uwOffset: first value to fill on the buffer
jeromecoutant 0:c18d9a07a0d8 78 * @retval None
jeromecoutant 0:c18d9a07a0d8 79 */
jeromecoutant 0:c18d9a07a0d8 80 static void Fill_Buffer(uint32_t *pBuffer, uint32_t uwBufferLenght, uint32_t uwOffset)
jeromecoutant 0:c18d9a07a0d8 81 {
jeromecoutant 0:c18d9a07a0d8 82 uint32_t tmpIndex = 0;
jeromecoutant 0:c18d9a07a0d8 83
jeromecoutant 0:c18d9a07a0d8 84 /* Put in global buffer different values */
Jerome Coutant 2:0cfdd4157b1e 85 for (tmpIndex = 0; tmpIndex < uwBufferLenght; tmpIndex++) {
jeromecoutant 0:c18d9a07a0d8 86 pBuffer[tmpIndex] = tmpIndex + uwOffset;
jeromecoutant 0:c18d9a07a0d8 87 }
jeromecoutant 0:c18d9a07a0d8 88 }
jeromecoutant 0:c18d9a07a0d8 89
jeromecoutant 0:c18d9a07a0d8 90 /**
jeromecoutant 0:c18d9a07a0d8 91 * @brief Compares two buffers.
jeromecoutant 0:c18d9a07a0d8 92 * @param pBuffer1, pBuffer2: buffers to be compared.
jeromecoutant 0:c18d9a07a0d8 93 * @param BufferLength: buffer's length
jeromecoutant 0:c18d9a07a0d8 94 * @retval 1: pBuffer identical to pBuffer1
jeromecoutant 0:c18d9a07a0d8 95 * 0: pBuffer differs from pBuffer1
jeromecoutant 0:c18d9a07a0d8 96 */
Jerome Coutant 2:0cfdd4157b1e 97 static uint8_t Buffercmp(uint32_t *pBuffer1, uint32_t *pBuffer2, uint16_t BufferLength)
jeromecoutant 0:c18d9a07a0d8 98 {
jeromecoutant 0:c18d9a07a0d8 99 while (BufferLength--) {
jeromecoutant 0:c18d9a07a0d8 100 if (*pBuffer1 != *pBuffer2) {
jeromecoutant 0:c18d9a07a0d8 101 return 1;
jeromecoutant 0:c18d9a07a0d8 102 }
jeromecoutant 0:c18d9a07a0d8 103
jeromecoutant 0:c18d9a07a0d8 104 pBuffer1++;
jeromecoutant 0:c18d9a07a0d8 105 pBuffer2++;
jeromecoutant 0:c18d9a07a0d8 106 }
jeromecoutant 0:c18d9a07a0d8 107
jeromecoutant 0:c18d9a07a0d8 108 return 0;
jeromecoutant 0:c18d9a07a0d8 109 }