Chain JTAG, mutli-mcu programming with nrf52?

[SRA]

I'm just checking because search didn't have hits.

Has anyone used JTAG "chain" programming to flash two micros on the same circuit? I assume the nrf52s won't hold this up, but I'm not sure.

Anyone?

[Nguyen Hoan Hoang]

nRF52 uses SWD. It does not support jtag chains. SWD is peer to peer, no chaining. However there is a solution to parallel programming nRF52 using multiple low cost programmer here.

[Nguyen Hoan Hoang]

I though you were talking about multiple nRF52. Well there are no gang programmers that can do different kind of MCU at the same time. Usually they program same processor in parallel. As I said, SWD is peer to peer (one on one) only. If you want to use the same connector, you need to have a switch between them. The IDAP-M was used like that on a customer dev kit which as a nRF51 + KL26Z sharing the same connector. It can program both processor but one at a time only.