RE: Programming the upper 512k FLASH of a nrf52840

eric@proxy.com — Mon, 04 May 2020 16:42:48 GMT

Hello Vidar, that resolved my issue exactly.

The wrong core was selected for nrfprog.

For JLinkExe:

Previously we had used "-nRF52" as the device type for JLinkExe which must have defaulted to the wrong core.

Now, using "-nRF52840_xxAA" the flash programs perfectly.

Thank you for your quick reply.

Eric

RE: Programming the upper 512k FLASH of a nrf52840

Vidar Berg — Mon, 04 May 2020 12:42:37 GMT

Hello Eric,

I was able to replicate this by selecting the wrong nRF52 variant Jlink commander (nrf52832_xxaa instead of nrf52840_xxaa). So please double check that you have indeed selected the correct device in your script. The ACL should not impact programming of the chip as it is enabled by the FW code after reset. You may try nrfjprog to test writes above 512K as well.

e.g.,

Best regards,

Vidar