Diff: main.cpp

Revision:

1:292265849500

Child:

2:3fbe5f24c51d

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Apr 18 10:47:19 2018 +0200
@@ -0,0 +1,153 @@
+#include "mbed.h"
+#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();
+
+  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();
+  }
+
+  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();
+}
+ 
+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);
+}
+
+static void print_PASS(void)
+{
+    BSP_LCD_SetTextColor(LCD_COLOR_BLACK);
+    BSP_LCD_SetBackColor(LCD_COLOR_GREEN);
+    BSP_LCD_DisplayStringAt(0, LINE(10), (uint8_t *)"Demo OK", CENTER_MODE);
+    while(1);
+}
+
+static void print_FAIL(void)
+{
+    BSP_LCD_SetBackColor(LCD_COLOR_RED);
+    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
+  * @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 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;
+}
+ 
+            
\ No newline at end of file