Programming nRF52 chip using 2 UART pins

RE: Programming nRF52 chip using 2 UART pins

endnode — Wed, 22 Mar 2017 07:23:19 GMT

Well if you have any custom bootloader pre-loaded you need to contact/get guidelines from the party which developed it for you. Hard to advice how to use something what we have never seen;)

RE: Programming nRF52 chip using 2 UART pins

Akshay — Wed, 22 Mar 2017 02:34:38 GMT

Sorry I forgot to mention but yes, It has pre-flashed bootloader on it.

RE: Programming nRF52 chip using 2 UART pins

endnode — Tue, 21 Mar 2017 10:27:14 GMT

You are right, there is an example in SDK V13 now! Thx

RE: Programming nRF52 chip using 2 UART pins

Wojtek — Tue, 21 Mar 2017 09:15:07 GMT

I think there is experimental secure bootloader over uart example in newest (v13) SDK. However, as you said - it has to be pre-flashed. nRF5x is not arduino :D

RE: Programming nRF52 chip using 2 UART pins

endnode — Tue, 21 Mar 2017 08:46:25 GMT

Hi,

nRF5x chips don't have any ROM bootloader (unlike some other ARM Cortex-M chips from vendors like STMicro) so you need to flash the chip at least once over JTAG/SWD. You can develop your custom "bootloader" which can use UART for FW upload and then bootloads the chip through MBR (or other mechanisms if you don't use SoftDevice) but there is no example as far as I know.

Good luck! Jan