Revision 8:bca4f3d51eaa, committed 2018-01-24

Comitter:

terence304

Date:

Wed Jan 24 18:22:00 2018 +0000

Parent:

7:1769f863fe49

Child:

9:4c8f32a4044d

Commit message:

add eeprom read and write funcions

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/app/eeprom.cpp	Wed Jan 24 18:22:00 2018 +0000
@@ -0,0 +1,46 @@
+#include "mbed.h"
+#include "eeprom.h"
+
+#if defined( TARGET_NUCLEO_L476RG )
+#define DATA_EEPROM_BASE    ( ( uint32_t )0x0807F800U )
+#define DATA_EEPROM_END     ( ( uint32_t )DATA_EEPROM_BASE + 2048 )
+#elif defined( TARGET_NUCLEO_L152RE )
+#define DATA_EEPROM_BASE    ( ( uint32_t )0x08080000U ) 
+#define DATA_EEPROM_END     ( ( uint32_t )0x080807FFU )
+#else
+#error "Please define EEPROM base address and size for your board "
+#endif
+
+uint8_t EepromMcuReadBuffer( uint16_t addr, uint8_t *buffer, uint16_t size )
+{
+    assert_param( buffer != NULL );
+
+    // assert_param( addr >= DATA_EEPROM_BASE );
+    assert_param( buffer != NULL );
+    assert_param( size < ( DATA_EEPROM_END - DATA_EEPROM_BASE ) );
+
+    memcpy( buffer, ( uint8_t* )DATA_EEPROM_BASE, size );
+
+    return SUCCESS;
+}
+
+uint8_t EepromMcuWriteBuffer( uint16_t addr, uint8_t *buffer, uint16_t size )
+{
+    int n = size / 4 + (size % 4 ? 1 : 0);
+    uint32_t *flash = ( uint32_t* )buffer;
+
+    assert_param( buffer != NULL );
+    assert_param( size < ( DATA_EEPROM_END - DATA_EEPROM_BASE ) );
+
+    HAL_FLASH_Unlock( );
+
+    for( uint32_t i = 0; i < n; i++ )
+    {
+        HAL_FLASH_Program( 0x02U, DATA_EEPROM_BASE + \
+                           ( 4 * i ), flash[i] );
+    }
+
+    HAL_FLASH_Lock( );
+
+    return SUCCESS;
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/app/eeprom.h	Wed Jan 24 18:22:00 2018 +0000
@@ -0,0 +1,33 @@
+#ifndef EEPROM_H
+#define EEPROM_H
+
+#include "stm32l1xx_hal_flash.h"
+
+/*!
+ * \brief Initialises the contents of EepromData
+ */
+void EepromInit( void );
+
+/*!
+ * \brief Read Eeprom from emulated EEPROM (in fact in Flash " higher address).
+ *
+ * \param [in]  addr          address of data (EEPROM offset not to be include)
+ * \param [in]  buffer        buffer to use for copy
+ * \param [in]  size          size of data to copy
+ *
+ * \retval      status        Status of operation (SUCCESS, ..)
+ */
+uint8_t EepromMcuReadBuffer( uint16_t addr, uint8_t *buffer, uint16_t size );
+
+/*!
+ * \brief Write Eeprom from emulated EEPROM (in fact in Flash " higher address).
+ *
+ * \param [in]  addr          address of data (EEPROM offset not to be include)
+ * \param [in]  buffer        buffer to use for copy
+ * \param [in]  size          size of data to copy
+ *
+ * \retval      status        Status of operation (SUCCESS, ..)
+ */
+uint8_t EepromMcuWriteBuffer( uint16_t addr, uint8_t *buffer, uint16_t size );
+
+#endif //EEPROM_H
\ No newline at end of file

--- a/app/main.cpp	Wed Jan 24 01:50:38 2018 +0000
+++ b/app/main.cpp	Wed Jan 24 18:22:00 2018 +0000
@@ -23,6 +23,7 @@
 #include "LoRaDeviceStateProc.h"
 #include "LoRaEventProc.h"
 #include "LoRaApp.h"
+#include "eeprom.h"
 
 /*!
  * Defines a random delay for application data transmission duty cycle. 1s,
@@ -121,6 +122,17 @@
     // Initialize Device state
     DeviceState = DEVICE_STATE_INIT;
 
+    // EEPROM
+    uint8_t buffer[8] = {'S', 'E', 'M', 'T', 'E', 'C', 'H', 0}; 
+    uint8_t buffer2[8];
+    
+    EepromMcuWriteBuffer(0, buffer, 8);
+    EepromMcuReadBuffer(0, buffer2, 8);  
+    
+    for (int i = 0; i < 8; ++i) {
+        printf("data: %c\r\n", buffer2[i]);
+    }
+    
     while( 1 )
     {               
         if( IsNetworkJoinedStatusUpdate == true )