SRAM demo using ST BSP driver.
Dependencies: BSP_DISCO_L496AG
Diff: main.cpp
- Revision:
- 2:3fbe5f24c51d
- Parent:
- 1:292265849500
- Child:
- 3:727e0290bde8
diff -r 292265849500 -r 3fbe5f24c51d main.cpp --- a/main.cpp Wed Apr 18 10:47:19 2018 +0200 +++ b/main.cpp Wed Apr 18 08:50:07 2018 +0000 @@ -2,96 +2,92 @@ #include "stm32l496g_discovery.h" #include "stm32l496g_discovery_lcd.h" #include "stm32l496g_discovery_sram.h" - + #define BUFFER_SIZE ((uint32_t)0x1000) #define SRAM_WRITE_READ_ADDR ((uint32_t)0x0800) - + uint16_t sram_aTxBuffer[BUFFER_SIZE]; uint16_t sram_aRxBuffer[BUFFER_SIZE]; __IO uint8_t write_complete = 0; - + static void print_demo_title(void); static void print_PASS(void); static void print_FAIL(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(); + print_demo_title(); + + wait(0.2); - wait(0.2); - - /*##-1- Configure the SRAM device ##########################################*/ - if (BSP_SRAM_Init() == SRAM_OK) { - BSP_LCD_DisplayStringAt(0, LINE(5), (uint8_t *)"SRAM INIT OK", LEFT_MODE); - } - else { - BSP_LCD_DisplayStringAt(0, LINE(5), (uint8_t *)"SRAM INIT FAIL", LEFT_MODE); - print_FAIL(); - } + /*##-1- Configure the SRAM device ##########################################*/ + if (BSP_SRAM_Init() == SRAM_OK) { + BSP_LCD_DisplayStringAt(0, LINE(5), (uint8_t *)"SRAM INIT OK", LEFT_MODE); + } else { + BSP_LCD_DisplayStringAt(0, LINE(5), (uint8_t *)"SRAM INIT FAIL", LEFT_MODE); + print_FAIL(); + } + + wait(0.2); + + /*##-2- SRAM memory read/write access ######################################*/ + + /* Fill the buffer to write */ + Fill_Buffer(sram_aTxBuffer, BUFFER_SIZE, 0xC000); + /* Empty the buffer to read */ + Fill_Buffer(sram_aRxBuffer, BUFFER_SIZE, 0); - wait(0.2); - - /*##-2- SRAM memory read/write access ######################################*/ - - /* Fill the buffer to write */ - Fill_Buffer(sram_aTxBuffer, BUFFER_SIZE, 0xC000); - /* Empty the buffer to read */ - Fill_Buffer(sram_aRxBuffer, BUFFER_SIZE, 0); - - /* Write data to the SRAM memory */ - if (BSP_SRAM_WriteData(SRAM_DEVICE_ADDR + SRAM_WRITE_READ_ADDR, sram_aTxBuffer, BUFFER_SIZE) == SRAM_OK) { - BSP_LCD_DisplayStringAt(0, LINE(6), (uint8_t *)"SRAM WRITE OK", LEFT_MODE); - } - else { - BSP_LCD_DisplayStringAt(0, LINE(6), (uint8_t *)"SRAM WRITE FAIL", LEFT_MODE); - print_FAIL(); - } - - wait(0.2); - - /* Read back data from the SRAM memory */ - if (BSP_SRAM_ReadData(SRAM_DEVICE_ADDR + SRAM_WRITE_READ_ADDR, sram_aRxBuffer, BUFFER_SIZE) == SRAM_OK) { - BSP_LCD_DisplayStringAt(0, LINE(7), (uint8_t *)"SRAM READ OK", LEFT_MODE); - } - else { - BSP_LCD_DisplayStringAt(0, LINE(7), (uint8_t *)"SRAM READ FAIL", LEFT_MODE); - print_FAIL(); - } - - wait(0.2); - - /* Check read data */ - if (Buffercmp(sram_aRxBuffer, sram_aTxBuffer, BUFFER_SIZE) == 0) { - BSP_LCD_DisplayStringAt(0, LINE(8), (uint8_t *)"SRAM COMPARE OK", LEFT_MODE); - } - else { - BSP_LCD_DisplayStringAt(0, LINE(8), (uint8_t *)"SRAM COMPARE FAIL", LEFT_MODE); - print_FAIL(); - } - - wait(0.2); - print_PASS(); + /* Write data to the SRAM memory */ + if (BSP_SRAM_WriteData(SRAM_DEVICE_ADDR + SRAM_WRITE_READ_ADDR, sram_aTxBuffer, BUFFER_SIZE) == SRAM_OK) { + BSP_LCD_DisplayStringAt(0, LINE(6), (uint8_t *)"SRAM WRITE OK", LEFT_MODE); + } else { + BSP_LCD_DisplayStringAt(0, LINE(6), (uint8_t *)"SRAM WRITE FAIL", LEFT_MODE); + print_FAIL(); + } + + wait(0.2); + + /* Read back data from the SRAM memory */ + if (BSP_SRAM_ReadData(SRAM_DEVICE_ADDR + SRAM_WRITE_READ_ADDR, sram_aRxBuffer, BUFFER_SIZE) == SRAM_OK) { + BSP_LCD_DisplayStringAt(0, LINE(7), (uint8_t *)"SRAM READ OK", LEFT_MODE); + } else { + BSP_LCD_DisplayStringAt(0, LINE(7), (uint8_t *)"SRAM READ FAIL", LEFT_MODE); + print_FAIL(); + } + + wait(0.2); + + /* Check read data */ + if (Buffercmp(sram_aRxBuffer, sram_aTxBuffer, BUFFER_SIZE) == 0) { + BSP_LCD_DisplayStringAt(0, LINE(8), (uint8_t *)"SRAM COMPARE OK", LEFT_MODE); + } else { + BSP_LCD_DisplayStringAt(0, LINE(8), (uint8_t *)"SRAM COMPARE FAIL", LEFT_MODE); + print_FAIL(); + } + + wait(0.2); + print_PASS(); } - + static void print_demo_title(void) { - BSP_LCD_Init(); - BSP_LCD_Clear(LCD_COLOR_WHITE); - - 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); - BSP_LCD_SetFont(&Font20); + BSP_LCD_Init(); + BSP_LCD_Clear(LCD_COLOR_WHITE); + + 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); + BSP_LCD_SetFont(&Font20); } static void print_PASS(void) @@ -108,7 +104,7 @@ BSP_LCD_DisplayStringAt(0, LINE(10), (uint8_t *)"Demo FAILED", CENTER_MODE); while(1); } - + /** * @brief Fills buffer with user predefined data. * @param pBuffer: pointer on the buffer to fill @@ -118,15 +114,14 @@ */ 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; - } + 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. @@ -136,18 +131,14 @@ */ static uint8_t Buffercmp(uint16_t* pBuffer1, uint16_t* pBuffer2, uint16_t BufferLength) { - while (BufferLength--) - { - if (*pBuffer1 != *pBuffer2) - { - return 1; + while (BufferLength--) { + if (*pBuffer1 != *pBuffer2) { + return 1; + } + + pBuffer1++; + pBuffer2++; } - - pBuffer1++; - pBuffer2++; - } - - return 0; + + return 0; } - - \ No newline at end of file