nRF52811 custom board will not program

[danimalia]

Hi all 

Have been using the nRF52810 for a while now in production with no issues. We are developing a companion product that uses the nRF52811 and we cannot get the custom hardware to program. 

Schematic: 

If I connect to the board with nrfConnect, it detects the device but does not ever read the memory, which means I can never get it to actually write a hex file:

When trying to debug the project in Segger, it always freezes at 55.5% then throws an error. 

Have tried several boards with the same result, and have used both the nRF52840 DK and the nRF52 DK, same result. 

Under pressure to get this PoC going, please help! 

[Turbo J]

Your program is too big: Flash ends at address 0x30000, but your program seems to be much bigger.

There is little flash left when using the S132 softdevice on an nrf52810. You might try disabling NRF_LOG module.

[danimalia]

Apologies, I snipped the wrong schematic, here is the correct one (pin-for-pin compatible so no major difference but this is the hardware I'm trying to program): 

[Simonr]

Hi

Jörg is correct, your application + SoftDevice seems to be larger than the Flash on the nRF52811, so you'll either have to cut down your code or use a SoftDevice that takes up less space. See the compatibility matrix for more info on compatible SoftDevices (I suggest you take a look at S112). As for programming the board, I suggest using nrfjprog.

Best regards,

Simon