PSRAM example.
Dependencies: BSP_DISCO_F413ZH mbed
main.cpp
- Committer:
- bcostm
- Date:
- 2017-09-27
- Revision:
- 1:61482ef96890
- Parent:
- 0:e86d70f1f2ce
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; }