storage.cpp

00001 #include "storage.h"
00002 
00003 /* Function: writeByte
00004  * -------------------
00005  * This function writes a byte of data to the EEPROM at the appropriate location.
00006  * This is called by my write.
00007  * Use this if you want to write a single byte.
00008  */
00009 HAL_StatusTypeDef Storage::writeByte(uint8_t byte)
00010  {
00011     HAL_StatusTypeDef  status;
00012     int address = offset + stadr;
00013     offset++;
00014     HAL_FLASHEx_DATAEEPROM_Unlock();  //Unprotect the EEPROM to allow writing
00015     status = HAL_FLASHEx_DATAEEPROM_Program(TYPEPROGRAMDATA_BYTE, address, byte);
00016     HAL_FLASHEx_DATAEEPROM_Lock();  // Reprotect the EEPROM
00017     return status;
00018 }
00019 
00020 /* Function: write
00021  * ---------------
00022  * This function takes an array of bytes and its size and writes them to the EEPROM
00023  * Use this if you want to write a lot of bytes.
00024  */
00025 void Storage::write(uint8_t* data, uint8_t size)
00026 {
00027     for(int i = 0; i < size; i++)
00028     {
00029         writeByte(data[i]);
00030     }
00031 }
00032 
00033 /* Function: readByte
00034  * ------------------
00035  * This function reads a byte of data from the EEPROM at the offset passed in.
00036  * This is called by my read function.
00037  */
00038 uint8_t Storage::readByte(uint32_t off) {
00039     uint8_t tmp = 0;
00040     off = off + stadr;
00041     tmp = *(__IO uint32_t*)off;
00042     
00043     return tmp;
00044 }
00045 
00046 /* Function: read
00047  * ---------------
00048  * This takes an array of bytes an fills it with our entire EEPROM
00049  * Call this function when you want to send the data over GSM
00050  */
00051 void Storage::read(uint8_t *ptr)
00052 {
00053     int nbytes = offset;
00054     printf("The number of bytes in the EEPROM is %d\n", nbytes);
00055     for(int i = 0; i < nbytes; i++)
00056     {
00057         ptr[i] = readByte(i);
00058     }
00059     return;
00060 }