Diff: MinimouseSrc/ApiFlash.cpp

Revision:

0:2325d1d28df3

Child:

1:eda561b01daf

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MinimouseSrc/ApiFlash.cpp	Fri Dec 15 13:15:04 2017 +0000
@@ -0,0 +1,77 @@
+/*
+ __  __ _       _                                 
+ |  \/  (_)     (_)                                
+ | \  / |_ _ __  _ _ __ ___   ___  _   _ ___  ___  
+ | |\/| | | '_ \| | '_ ` _ \ / _ \| | | / __|/ _ \
+ | |  | | | | | | | | | | | | (_) | |_| \__ \  __/ 
+ |_|  |_|_|_| |_|_|_| |_| |_|\___/ \__,_|___/\___| 
+                                                   
+                                                   
+Description       : Flash Api.  
+
+
+License           : Revised BSD License, see LICENSE.TXT file include in the project
+
+Maintainer        : Fabien Holin (SEMTECH)
+*/
+#include "ApiFlash.h"
+Flash gFlash;
+Flash::Flash(){
+      // to be completed by mcu providers
+}
+Flash::~Flash(){
+      // to be completed by mcu providers
+} 
+
+int Flash::init() {
+    // to be completed by mcu providers
+    return (0);
+}
+int Flash::read(uint8_t *buffer, uint32_t addr, uint32_t size){
+     /* have to be implemented by mcu providers
+    the following code propose a lite implementation without any error cases*/
+    int i;
+    for (i=0;i<size;i++){
+        buffer[i]= *((uint8_t*)(addr)+i);
+    }
+     return 0;
+}
+
+
+
+int Flash::program(const void *buffer, uint32_t addr, uint32_t size){
+    /* have to be implemented by mcu providers
+    the following code propose a lite implementation without any error cases
+    this section have to be very robust, have to support failure mode such as  power off during flash programmation    
+    This basic implementation suppose that the addr is 4 Bytes aligned and suppose also that the size can be divide by 4.
+    */
+    HAL_StatusTypeDef res = HAL_OK; 
+    HAL_FLASH_Unlock(); 
+
+    for (; size >= 4; size -= 4, addr += 4) { 
+        res = HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD, addr, *(uint32_t const*)buffer); 
+        buffer = (uint32_t const*)buffer + 1; 
+        if (res != HAL_OK) 
+            goto done; 
+    } 
+
+    done: 
+        HAL_FLASH_Lock(); 
+        return res == HAL_OK ? 0 : -1; 
+} 
+   
+
+int Flash::erase(uint32_t addr, uint32_t size){
+     /* have to be implemented by mcu providers*/
+    return 0;
+}
+
+uint32_t Flash::get_flash_start(){
+     /* have to be implemented by mcu providers*/
+     return 0;
+}
+
+uint32_t Flash:: get_flash_size(){
+     /* have to be implemented by mcu providers*/
+     return 0;
+}    
\ No newline at end of file