NVM usage in nrf51422

RE: NVM usage in nrf51422

Petter Myhre — Tue, 21 Jul 2015 09:04:07 GMT

Could you edit your question and include this? Try to use answers for answers. You should also try elaborate on what "I can't read the data written again" means.

RE: NVM usage in nrf51422

Mohamed O.Abouzeid — Mon, 20 Jul 2015 11:01:38 GMT

           void edit_speed_ID(uint8_t speed)
           {		
       //pattern_ID_3();
        uint32_t value, err_code;
       value=0x00000000 | speed;
         err_code=sd_flash_write(address,(uint32_t *) & value,1);
       APP_ERROR_CHECK(err_code);
           flag=false;
           //	flash_init();
            }

in the main function

	if (flag==false)
	{
	speed = * address;
	//speed = 5 *speed;
	}

and flag is global identifier.

RE: NVM usage in nrf51422

Mohamed O.Abouzeid — Mon, 20 Jul 2015 10:59:33 GMT

first of all, thank you for trying helping me, I solved a part of my problem by using the sd_flash_write function, it works & I doesn't loose the connection, another problem appeared that I can't read the data written again, I'll post this part of code in an answer just a minute

RE: NVM usage in nrf51422

RK — Mon, 20 Jul 2015 10:11:28 GMT

still no code - just some sketchy 'I write values and it doesn't work'. Nobody can help you if you don't provide some reasonable details of exactly what you're doing and where it's failing.

Are you in the error handler? I'm guessing since the connection breaks you may well be, which would mean you did get an error and APP_ERROR_CHECK() failed and called the error handler. Have you put a breakpoint in there?

If you're not there, where are you? Hit break in the debugger, are you in the hardfault handler, some other fault handler?

RE: NVM usage in nrf51422

Mohamed O.Abouzeid — Mon, 20 Jul 2015 08:57:33 GMT

I didn't get any errors or even warnings, what I got that when I try to write values sent from the mobile to the NVM in nrf51422 development kit, it caused to lost the connection & I get an error 133 (0x85): GATT ERROR while if I sent values and don't try to store in the nvm it works fine with me

RE: NVM usage in nrf51422

RK — Mon, 20 Jul 2015 01:45:55 GMT

There's nowhere near enough information in this question for anyone to be able to help you. You don't say what isn't working, you don't post even a single line of code showing what you're doing, haven't said if you get error messages, nothing.