RE: No OTA consistency board to board on the same firmware/layout PCBA

Chabose — Fri, 23 Apr 2021 06:13:52 GMT

Hi Sigurd,

I do appreciate the instructions you've given.
You literally saved my day.

As soon as I use debug bootloader, I found I left LED code for nrf52DK in "dfu_observer()" without modification.
And it was stacked on "nrf_gpio_cfg_output()".

After removing unnecessary codes, it works perfectly.
I'm now assuming variation between the board is due to a bad reflowing process that some pads are shorted.

Thank you sooo much.

Hiroto

RE: No OTA consistency board to board on the same firmware/layout PCBA

Sigurd — Thu, 22 Apr 2021 12:53:19 GMT

Hi,

Looks like the central device was not able to find the device(It should be advertising as "DfuTarg#your number after going into bootloader mode).

Are you able to get the nrf_log output from the bootloader, either via UART or Segger RTT viewer as log backend? The _debug prefix projects have logging enabled. So use the pca10040_ble_debug secure_bootloader project. Maybe the log from the nRF52 might reveal something about why it's failing.

2) Do you see this issue when testing with different phones as well?