Hi,
I had some issue with my nRF52 DK PCA10040 v3.0.3, The programmer was totally unreachable also with the simplest terminal command
nrfjprog --recover --coprocessor CP_NETWORK --family NRF53
so I tried to reprogram it trough hidden J13 Tag-Connect TC2050 just under the "PCA10040 v3.0.3" lable.
I was able to flash the programmer firmware trough these commands:
C:\Users\[...]> nrfjprog --recover --family NRF53 --snr 506004777 Recovering device. This operation might take 30s. Erasing user code and UICR flash areas. Writing image to disable ap protect. PS C:\Users\[...]> nrfjprog --program "C:\Program Files (x86)\SEGGER\JLink\Firmwares\JLink_OB_nRF5340_NordicSemi.bin" --family NRF53 --snr 506004777 --sectorerase --verify [ ###### ] 0.000s | Erase file - Check image [ ##### ] 0.000s | Check image validity - Initialize device info [ ########## ] 0.000s | Check image validity - Check region 0 settings [ ############### ] 0.000s | Check image validity - block 1 of 2 [ #################### ] 0.025s | Check image validity - Finished [ ############# ] 0.000s | Erase file - Erasing [ ########## ] 0.000s | Erasing non-volatile memory - block 1 of 1 [ #################### ] 0.000s | Erasing non-volatile memory - Erase successful [ #################### ] 0.124s | Erase file - Done erasing [ ###### ] 0.000s | Program file - Checking image [ ##### ] 0.000s | Check image validity - Initialize device info [ ########## ] 0.000s | Check image validity - Check region 0 settings [ ############### ] 0.072s | Check image validity - block 1 of 2 [ #################### ] 0.001s | Check image validity - Finished [ ############# ] 0.000s | Program file - Programming [ ########## ] 0.000s | Programming image - block 1 of 1 [ #################### ] 0.000s | Programming image - Write successful [ #################### ] 0.019s | Program file - Done programming [ ###### ] 0.000s | Verify file - Check image [ ##### ] 0.000s | Check image validity - Initialize device info [ ########## ] 0.000s | Check image validity - Check region 0 settings [ ############### ] 0.104s | Check image validity - block 1 of 2 [ #################### ] 0.003s | Check image validity - Finished [ ############# ] 0.000s | Verify file - Verifying [ ########## ] 0.000s | Verifying image - block 1 of 1 [ #################### ] 0.000s | Verifying image - Verify successful [ #################### ] 0.006s | Verify file - Done verifying PS C:\Users\[...]> nrfjprog --reset --family NRF53 --snr 506004777 Applying system reset. Run.
Firmware and stack pointer seem ok:
J-Link>mem 0x00000000 0x20 00000000 = 00 00 04 20 8D 07 00 00 B5 07 00 00 B7 07 00 00 ... ............ 00000010 = B9 07 00 00 BB 07 00 00 BD 07 00 00 BF 07 00 00 ................ J-Link>mem 0x00010000 0x20 00010000 = FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF ................ 00010010 = FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF ................ J-Link>mem 0x00040000 0x20 00040000 = FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF ................ 00040010 = FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF ................
Also UICR "0x50FA50FA " seem ok with APPROTECT disabled:
J-Link>mem 0x00FF8000 0x40 00FF8000 = FA 50 FA 50 FF FF FF FF FF FF FF FF FF FF FF FF .P.P............ 00FF8010 = FF FF FF FF FF FF FF FF FF FF FF FF FA 50 FA 50 .............P.P 00FF8020 = FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF ................ 00FF8030 = FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF ................
But the Programmer still continue not to show up.
I double checked that everything worked fine, but at the end this thread came out stating that I need production files
(https://devzone.nordicsemi.com/f/nordic-q-a/105606/how-to-burn-j-linkob-firmware-jlink_ob_nrf5340_nordicsemi-bin-on-top-of-nrf5340 )
How can I move forward?
Thank You
