Flash nRF52840 Using SITARA processor (SWD)

[Luis]

We are evaluating to use this IC for BLE/NFC purpose.

we would like to flash the nRF52840 thru our Linux processor (not using external flashers), using the SWD lines connected.

OpenOCD library can work? any samples to start? any other ideas/code?

Thank you

[Turbo J]

OpenOCD supports NRF5x MCUs, but support for nRF52840 variant is not even in the git master tree, yet.

There is a patch at OpenOCD Zylin 4649, in case one wanted to compile OpenOCD.

[Luis]

thank you.

the nRF52840 is not the issue, 

for our posrpuse, no flash (jlink, or other) will be connected, so we would like to use the ARM base processor (with linux running), to flash the nRF52840.

the nRF52840 SWDIO is connected to GPIOs.

[Jørgen Holmefjord]

We can only help with the nRF side of the flashing. If you need help running OpenOCD on AM5728, you need to check with the manufacturer of that device.

[Turbo J]

Obviously there is no AM5728 driver, but you should be able to use the generic sysfsgpio interface for linux.

Getting OpenOCD to run properly will be an interesting experience anyway.