nrfjprog.dll - nrfjprogdll_go not starting SoC

RE: nrfjprog.dll - nrfjprogdll_go not starting SoC

Simen August Tinderholt — Mon, 19 Feb 2018 14:00:06 GMT

Oh, I didn't notice you're using nRF51, then debug reset does nothing, as those do not have the requisite CTRL-AP.

Then the sys_resets by themselves should suffice. INVALID_DEVICE_FOR_OPERATION means the DLL has done nothing.

RE: nrfjprog.dll - nrfjprogdll_go not starting SoC

Martin — Thu, 15 Feb 2018 14:58:55 GMT

I think I have it solved.

Just finished a test run with 30 devices - and all started.

The trick was to

halt the SoC
debug_reset - ignoring INVALID_DEVICE_FOR_OPERATION
sys_reset
do all flashing
debug_reset - ignoring INVALID_DEVICE_FOR_OPERATION
sys_reset
disconnect_device
go

at least this order solved it for me. The main solutions seems to be to double reset the SoC.

RE: nrfjprog.dll - nrfjprogdll_go not starting SoC

Martin — Thu, 15 Feb 2018 11:57:15 GMT

okay, I will make the changes and report back.

BTW: any chance you can make a flow diagram available how you are handling the commandline args in nrfjprog?

RE: nrfjprog.dll - nrfjprogdll_go not starting SoC

Simen August Tinderholt — Thu, 15 Feb 2018 11:54:52 GMT

If you're not protected you should be able to do a sysreset, but a debug reset is mostly equivalent, and should always work.

After programming you should at least reset the device to make sure your program counter and stack pointers are read correctly.

RE: nrfjprog.dll - nrfjprogdll_go not starting SoC

Martin — Thu, 15 Feb 2018 11:52:25 GMT

currently I'm not setting protection, this was also one of my first thoughts.

should I do a debug_reset instead of sys_reset anyways?

RE: nrfjprog.dll - nrfjprogdll_go not starting SoC

Simen August Tinderholt — Thu, 15 Feb 2018 11:48:36 GMT

Ah, you're protecting, then doing go?

You should perform a debug reset instead, this will reset your device and start the program. Since you've enabled readback protection, the go probably fails, as you no longer have access to the core.

RE: nrfjprog.dll - nrfjprogdll_go not starting SoC

Martin — Thu, 15 Feb 2018 11:30:53 GMT

pseudo code below:

void flashingDevice(){
    
    NRFJProg.NRFJPROG_open_dll ();
    
    NRFJProg.NRFJPROG_is_dll_open( ref open );
    
    if(open){
        NRFJProg.NRFJPROG_is_connected_to_emu( ref connected );
        
        if(!connected){
            NRFJProg.NRFJPROG_connect_to_emu_without_snr( 8000 );
            
            NRFJProg.NRFJPROG_read_connected_emu_snr( ref serial );
            
            NRFJProg.NRFJPROG_connect_to_device();
            
            // GET SOME DEVICE INFOS
            NRFJProg.NRFJPROG_is_connected_to_device( ref deviceConnected );
            if ( deviceConnected ) {
                NRFJProg.NRFJPROG_halt();
                Thread.Sleep( 200 );
                
                NRFJProg.NRFJPROG_is_halted( ref halted );
                
                NRFJProg.NRFJPROG_erase_all();
                
                foreach(cell in sdHex){
                    NRFJProg.NRFJPROG_write(cell, ...);
                }
                
                foreach(cell in fwHex){
                    NRFJProg.NRFJPROG_write(cell, ...);
                }
                
                // SET DATA TO UICR
                NRFJProg.NRFJPROG_write_u32();

                if(protect)
                NRFJProg.NRFJPROG_readback_protect(NRFJProg.readback_protection_status_t.ALL);
                
                // Write some more data to RAM
                NRFJProg.NRFJPROG_write_u32();
                Thread.Sleep( 200 );
                
                // JUST A TRY
                //NRFJProg.NRFJPROG_sys_reset();
                //Thread.Sleep( 400 );
                
                NRFJProg.NRFJPROG_go();
                Thread.Sleep( 400 );
                
                NRFJProg.NRFJPROG_disconnect_from_device();
                
                // becoming desperate
                NRFJProg.NRFJPROG_go();
            }
        }
        
        NRFJProg.NRFJPROG_disconnect_from_emu();
    }
}

RE: nrfjprog.dll - nrfjprogdll_go not starting SoC

Simen August Tinderholt — Thu, 15 Feb 2018 10:15:52 GMT

Do you perform any actions after _go() ? Some functions in the nRFJProg DLL halt the processor to ensure data integrity.

If possible, could you post the nRFJProg log, or a pseudocode of your script?