File content as of revision 4:3269abcc9c73:

#include "mbed.h"
#include "eeprom_flash.h"
Serial pc(USBTX, USBRX); //Initalise PC serial comms
DigitalOut myled(LED1);
/*
* Must call this first to enable writing
*/
void enableEEPROMWriting() {
HAL_StatusTypeDef status = HAL_FLASH_Unlock();
FLASH_PageErase(EEPROM_START_ADDRESS); // required to re-write
CLEAR_BIT(FLASH->CR, FLASH_CR_PER); // Bug fix: bit PER has been set in Flash_PageErase(), must clear it here
}
void disableEEPROMWriting() {
HAL_FLASH_Lock();
}
/*
* Writing functions
* Must call enableEEPROMWriting() first
*/
HAL_StatusTypeDef writeEEPROMHalfWord(uint32_t address, uint16_t data) {
HAL_StatusTypeDef status;
address = address + EEPROM_START_ADDRESS;
status = HAL_FLASH_Program(FLASH_TYPEPROGRAM_HALFWORD, address, data);
return status;
}
/*
* Reading functions
*/
uint16_t readEEPROMHalfWord(uint32_t address) {
uint16_t val = 0;
address = address + EEPROM_START_ADDRESS;
val = *(__IO uint16_t*)address;
return val;
}
//Programme de test
int main() {
int tab[40]= {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40};
int adresse = 0x00;
int lecture;
pc.baud(9600);
/* Ecriture*/
enableEEPROMWriting(); //autorisation d'ecriture dans l'eeprom
writeEEPROMHalfWord(adresse, tab[0]);
writeEEPROMHalfWord(adresse+2, tab[1]);
writeEEPROMHalfWord(adresse+4, tab[2]);
writeEEPROMHalfWord(adresse+6, tab[3]);
writeEEPROMHalfWord(adresse+8, tab[4]);
writeEEPROMHalfWord(adresse+10, tab[5]);
writeEEPROMHalfWord(adresse+12, tab[6]);
writeEEPROMHalfWord(adresse+14, tab[7]);
writeEEPROMHalfWord(adresse+16, tab[8]);
writeEEPROMHalfWord(adresse+18, tab[9]);
writeEEPROMHalfWord(adresse+20, tab[10]);
writeEEPROMHalfWord(adresse+22, tab[11]);
writeEEPROMHalfWord(adresse+24, tab[12]);
writeEEPROMHalfWord(adresse+26, tab[13]);
writeEEPROMHalfWord(adresse+28, tab[14]);
writeEEPROMHalfWord(adresse+30, tab[15]);
writeEEPROMHalfWord(adresse+32, tab[16]);
writeEEPROMHalfWord(adresse+34, tab[17]);
writeEEPROMHalfWord(adresse+36, tab[18]);
writeEEPROMHalfWord(adresse+38, tab[19]);
writeEEPROMHalfWord(adresse+40, tab[20]);
writeEEPROMHalfWord(adresse+42, tab[21]);
writeEEPROMHalfWord(adresse+44, tab[22]);
writeEEPROMHalfWord(adresse+46, tab[23]);
writeEEPROMHalfWord(adresse+48, tab[24]);
writeEEPROMHalfWord(adresse+50, tab[25]);
writeEEPROMHalfWord(adresse+52, tab[26]);
writeEEPROMHalfWord(adresse+54, tab[27]);
writeEEPROMHalfWord(adresse+56, tab[28]);
writeEEPROMHalfWord(adresse+58, tab[29]);
writeEEPROMHalfWord(adresse+60, tab[30]);
writeEEPROMHalfWord(adresse+62, tab[31]);
writeEEPROMHalfWord(adresse+64, tab[32]);
writeEEPROMHalfWord(adresse+66, tab[33]);
writeEEPROMHalfWord(adresse+68, tab[34]);
writeEEPROMHalfWord(adresse+70, tab[35]);
writeEEPROMHalfWord(adresse+72, tab[36]);
writeEEPROMHalfWord(adresse+74, tab[37]);
writeEEPROMHalfWord(adresse+76, tab[38]);
writeEEPROMHalfWord(adresse+78, tab[39]);
disableEEPROMWriting(); //Interdiction d'ecriture
myled=!myled;
wait(0.5);
myled=!myled;
wait(0.5);
/*lecture et affichage*/
lecture=readEEPROMHalfWord(adresse);
pc.printf ("valeur lue: %d\n\r",lecture);
lecture=readEEPROMHalfWord(adresse+2);
pc.printf ("valeur lue: %d\n\r",lecture);
lecture=readEEPROMHalfWord(adresse+4);
pc.printf ("valeur lue: %d\n\r",lecture);
lecture=readEEPROMHalfWord(adresse+6);
pc.printf ("valeur lue: %d\n\r",lecture);
lecture=readEEPROMHalfWord(adresse+8);
pc.printf ("valeur lue: %d\n\r",lecture);
lecture=readEEPROMHalfWord(adresse+10);
pc.printf ("valeur lue: %d\n\r",lecture);
lecture=readEEPROMHalfWord(adresse+12);
pc.printf ("valeur lue: %d\n\r",lecture);
lecture=readEEPROMHalfWord(adresse+14);
pc.printf ("valeur lue: %d\n\r",lecture);
lecture=readEEPROMHalfWord(adresse+16);
pc.printf ("valeur lue: %d\n\r",lecture);
lecture=readEEPROMHalfWord(adresse+18);
pc.printf ("valeur lue: %d\n\r",lecture);
lecture=readEEPROMHalfWord(adresse+20);
pc.printf ("valeur lue: %d\n\r",lecture);
lecture=readEEPROMHalfWord(adresse+22);
pc.printf ("valeur lue: %d\n\r",lecture);
lecture=readEEPROMHalfWord(adresse+24);
pc.printf ("valeur lue: %d\n\r",lecture);
lecture=readEEPROMHalfWord(adresse+26);
pc.printf ("valeur lue: %d\n\r",lecture);
lecture=readEEPROMHalfWord(adresse+28);
pc.printf ("valeur lue: %d\n\r",lecture);
lecture=readEEPROMHalfWord(adresse+30);
pc.printf ("valeur lue: %d\n\r",lecture);
lecture=readEEPROMHalfWord(adresse+32);
pc.printf ("valeur lue: %d\n\r",lecture);
lecture=readEEPROMHalfWord(adresse+34);
pc.printf ("valeur lue: %d\n\r",lecture);
lecture=readEEPROMHalfWord(adresse+36);
pc.printf ("valeur lue: %d\n\r",lecture);
lecture=readEEPROMHalfWord(adresse+38);
pc.printf ("valeur lue: %d\n\r",lecture);
lecture=readEEPROMHalfWord(adresse+40);
pc.printf ("valeur lue: %d\n\r",lecture);
lecture=readEEPROMHalfWord(adresse+42);
pc.printf ("valeur lue: %d\n\r",lecture);
lecture=readEEPROMHalfWord(adresse+44);
pc.printf ("valeur lue: %d\n\r",lecture);
lecture=readEEPROMHalfWord(adresse+46);
pc.printf ("valeur lue: %d\n\r",lecture);
lecture=readEEPROMHalfWord(adresse+48);
pc.printf ("valeur lue: %d\n\r",lecture);
lecture=readEEPROMHalfWord(adresse+50);
pc.printf ("valeur lue: %d\n\r",lecture);
lecture=readEEPROMHalfWord(adresse+52);
pc.printf ("valeur lue: %d\n\r",lecture);
lecture=readEEPROMHalfWord(adresse+54);
pc.printf ("valeur lue: %d\n\r",lecture);
lecture=readEEPROMHalfWord(adresse+56);
pc.printf ("valeur lue: %d\n\r",lecture);
lecture=readEEPROMHalfWord(adresse+58);
pc.printf ("valeur lue: %d\n\r",lecture);
lecture=readEEPROMHalfWord(adresse+60);
pc.printf ("valeur lue: %d\n\r",lecture);
lecture=readEEPROMHalfWord(adresse+62);
pc.printf ("valeur lue: %d\n\r",lecture);
lecture=readEEPROMHalfWord(adresse+64);
pc.printf ("valeur lue: %d\n\r",lecture);
lecture=readEEPROMHalfWord(adresse+68);
pc.printf ("valeur lue: %d\n\r",lecture);
lecture=readEEPROMHalfWord(adresse+70);
pc.printf ("valeur lue: %d\n\r",lecture);
lecture=readEEPROMHalfWord(adresse+72);
pc.printf ("valeur lue: %d\n\r",lecture);
lecture=readEEPROMHalfWord(adresse+76);
pc.printf ("valeur lue: %d\n\r",lecture);
lecture=readEEPROMHalfWord(adresse+78);
pc.printf ("valeur lue: %d\n\r",lecture);
while(1);
}