Diff: flash.cpp

Revision:

1:f316de154ff7

Parent:

0:da00b5dd65c6

--- a/flash.cpp	Mon Jan 30 20:58:13 2017 +0000
+++ b/flash.cpp	Sun Apr 23 17:15:53 2017 +0000
@@ -1,22 +1,101 @@
-
-#include "flash.h"
+/*=============================================================================================
+        section 1 - includes
+ ==============================================================================================*/
+/* imported libs */
+#include "mbed.h"
 #include "stm32746g_discovery_qspi.h"
 
+/* project files */
+#include "flash.h"
+
+/*=============================================================================================
+        section 2 - private defines / enumerations
+ ==============================================================================================*/
 #define FLASH_START_ADDRESS 0
 #define FLASH_START_BLOCK   0
 
-void flash_init(void)
+/*=============================================================================================
+        section 3 - private typedefs
+ ==============================================================================================*/
+
+/*=============================================================================================
+        section 4 - private macros
+ ==============================================================================================*/
+ 
+/*=============================================================================================
+        section 5 - public constants definition
+ ==============================================================================================*/
+
+/*=============================================================================================
+        section 6 - public variables/pointers definition
+ ==============================================================================================*/
+
+/*=============================================================================================
+        section 7 - private constants definition
+ ==============================================================================================*/
+
+/*=============================================================================================
+        section 8 - private variables/objects/pointers definition
+ ==============================================================================================*/
+static uint8_t localFlashData[FLASH_DATA_SIZE];
+
+/*=============================================================================================
+        section 9 - private functions - declaration
+ ==============================================================================================*/
+
+/*=============================================================================================
+        section 10 - private functions - implementation (definition)
+ ==============================================================================================*/
+
+/*=============================================================================================
+        section 11 - public functions - implementation (definition)
+ ==============================================================================================*/
+void flash_init(void) 
 {
     BSP_QSPI_Init(); 
+    BSP_QSPI_Read(localFlashData, FLASH_START_ADDRESS, FLASH_DATA_SIZE);
 }
 
-void flash_write(uint8_t* newFlashData)
-{   
-    BSP_QSPI_Erase_Block(FLASH_START_BLOCK); 
-    BSP_QSPI_Write(newFlashData, FLASH_START_ADDRESS, FLASH_DATA_SIZE);   
+/* liest Flash Daten aus der lokale RAM Kopie */
+uint8_t flash_read(E_FLASH_INDEX index)
+{
+    return localFlashData[index];
+}
+
+/* schreibt Flash Daten in die lokale RAM Kopie */
+void flash_write(E_FLASH_INDEX index, uint8_t data)
+{
+    localFlashData[index] = data;
 }
 
-void flash_read(uint8_t* readFlashData)
-{    
-    BSP_QSPI_Read(readFlashData, FLASH_START_ADDRESS, FLASH_DATA_SIZE);
-}
\ No newline at end of file
+void flash_task(void)
+{
+    uint8_t tmpFlashData[FLASH_DATA_SIZE];
+    uint8_t isNotEqual = 0;
+    uint8_t i;
+    
+    /* prüfe ob die RAM Daten != den ROM Daten sind */
+    BSP_QSPI_Read(tmpFlashData, FLASH_START_ADDRESS, FLASH_DATA_SIZE);
+    for (i = 0; i < FLASH_DATA_SIZE; i++)
+    {
+        if (tmpFlashData[i] != localFlashData[i])
+        { /* Daten ungleich */
+            isNotEqual = 1; 
+        }
+    }
+    
+    /* schreibe RAM Daten in das Flash ROM falls RAM Daten != ROM Daten */
+    if (1 == isNotEqual)
+    {
+        BSP_QSPI_Erase_Block(FLASH_START_BLOCK);
+        BSP_QSPI_Write(localFlashData, FLASH_START_ADDRESS, FLASH_DATA_SIZE);
+    }
+}
+
+/*=============================================================================================
+        section 12 - interrupt service routines (ISRs)
+ ==============================================================================================*/
+
+/*=============================================================================================
+        end of file
+ ==============================================================================================*/
\ No newline at end of file