[SOLVED] Problem with flash memory read ...

[Darklakebridge78]

Hello everyone!
I am using for the first time the Mikromedia 3 for PIC32MZ board, with the PIC32MZ2048EFH100 processor on board. I would need to store two measurement parameters (bytes) in the internal Flash of the MCU. To do this, I chose the last two unused memory locations, also in view of future code expansions. Using the libraries of the MikroC for PIC32 compiler, I was able to store the data (and the reading of the flash with the programmer confirms this), but I did not understand how I can extract them at startup to use them in the program. Has anyone had a similar need? Can you help me understand better?

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  Flash_Erase_Page(0x9D1FFFE0);
  Flash_Write_Word(0x9D1FFFE0,1);                                               
  Flash_Write_Word(0x9D1FFFF0,22);                                              
  Delay_ms(100);

[Darklakebridge78]

Good morning everyone!
I solved my problem. I leave the code on this board so that it can be useful to those who need it. These routines will allow you to use the mcu's Flash program, like an EEPROM.

PS Pay attention to the stall in reading of the MCU; especially if you use interrupts ...

Variables declaration:

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unsigned long NVM1,NVM2;
char TXT1[64],TXT2[64];

Routine to write the last two locations of the Program Flash:

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void WriteNvmData() {
 Flash_Erase_Page(0x9D1FFFE0);
 Flash_Write_Word(0x9D1FFFE0,1);
 Flash_Write_Word(0x9D1FFFF0,22);
 Delay_ms(100);
}

Routine to read the last two locations of the Program Flash:

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void ReadNvmData() {
 NVM1 = *(int*)(0x9D1FFFE0);
 LongWordToStr(NVM1,TXT1);
 TFT_Set_Font(&Verdana12x13_Regular, CL_BLACK, FO_HORIZONTAL);
 TFT_Write_Text("DEC1: ",19,50);
 Ltrim(TXT1);
 TFT_Write_Text(TXT1,110,50);
 LongWordToHex(NVM1,TXT1);
 TFT_Write_Text("HEX1: ",19,60);
 TFT_Write_Text(TXT1,110,60);
 
 NVM2 = *(int*)(0x9D1FFFF0);
 LongWordToStr(NVM2,TXT2);
 TFT_Set_Font(&Verdana12x13_Regular, CL_BLACK, FO_HORIZONTAL);
 TFT_Write_Text("DEC2: ",19,75);
 Ltrim(TXT2);
 TFT_Write_Text(TXT2,110,75);
 LongWordToHex(NVM2,TXT2);
 TFT_Write_Text("HEX2: ",19,85);
 TFT_Write_Text(TXT2,110,85);
}