Can I use the I2C to load a program for the nrf52832?

RE: Can I use the I2C to load a program for the nrf52832?

Duncan Xu — Wed, 11 Jul 2018 22:20:49 GMT

I want to use the nrf52832 to collect the nearby Bluetooth devices information and sent them to an STM chip via the I2C for the later processing. So, at the beginning, I wonder whether it is possible to use the I2C to update the firmware of the nrf52832, too. Yes, I 'll use a 3rd device with Bluetooth to load the firmware into the nrf52832.

RE: Can I use the I2C to load a program for the nrf52832?

RK — Wed, 11 Jul 2018 12:29:44 GMT

That would be easier and quicker if you load your firmware onto the nRF chip from a 3rd device like a phone, you can't use the STM chip for that because it doesn't talk bluetooth.

Perhaps it's better at this point if you explain what it is you're actually trying to do, why you have a Nordic chip and an STM chip and how they are supposed to interact.

RE: Can I use the I2C to load a program for the nrf52832?

Duncan Xu — Wed, 11 Jul 2018 01:32:47 GMT

It sounds like having lots of work to do but my time is tight. You mentioned the Bluetooth method at the early reply, would it be easier and quicker?

Thank you.

RE: Can I use the I2C to load a program for the nrf52832?

RK — Tue, 10 Jul 2018 21:14:25 GMT

well you can do that - it won't be easy - you'll need to speak SWD protocol to the chip. If you really are going to go that way I'd suggest starting with the freely available CMSIS-DAP implementation of the SWD protocol, just rip out the USB front end and take the actual driver portion. You're going to have to understand a lot about SWD to make this work.

RE: Can I use the I2C to load a program for the nrf52832?

Duncan Xu — Tue, 10 Jul 2018 14:04:43 GMT

Yes, that is exactly what I mean.

RE: Can I use the I2C to load a program for the nrf52832?

Bjørn Kvaale — Tue, 10 Jul 2018 13:44:41 GMT

[quote user="Duncan Xu"]there are special pins for SWD, will it be a good choice[/quote]

Could you please rephrase this? Do you want to program the nrf52 via the SWD pins?

RE: Can I use the I2C to load a program for the nrf52832?

Duncan Xu — Mon, 09 Jul 2018 14:03:31 GMT

Hi RK,

Thank you for your answer. I find that there are special pins for SWD, will it be a good choice? and I would like to hear your suggestions.

Thanks a lot.

Duncan

RE: Can I use the I2C to load a program for the nrf52832?

RK — Sat, 07 Jul 2018 05:28:33 GMT

No it won't work - well it'll work if you write your own loader program which receives the data over I2C but there's no built-in support for it nor any example I've seen which does this. There used to be a bootloader over UART example, but I'm not even sure if that's up to date any more as most people want to use bluetooth to upload firmware.