Flash NRF52 by UART

RE: Flash NRF52 by UART

Sigurd — Mon, 30 Oct 2017 14:17:17 GMT

Yes, you should only need (SWDIO, SWCLK, VCC and GND) to program the device. Also remember to power your nRF52 device!

VDD: Reference voltage for programmer
SWDIO: Serial wire debug data
GND: Ground
SWDCLK: Serial wire debug clock

RE: Flash NRF52 by UART

Flavien — Mon, 30 Oct 2017 14:11:00 GMT

I am waiting my programmer that I bought (fr.farnell.com/.../2098545) to program the NRF52 on my MDBT46Q module. Do I need only the SWD wires (SWDIO, SWCLK, VCC and GND) to program ??

RE: Flash NRF52 by UART

Nguyen Hoan Hoang — Fri, 27 Oct 2017 14:09:59 GMT

If you load the uart bootloader then yes you can program it via uart but how are you going to program the uart bootloader into the chip ?

RE: Flash NRF52 by UART

Flavien — Fri, 27 Oct 2017 14:05:21 GMT

Hi Nguyen Hoan Hoang ! Are you sure I can't program the NRF52 via UART even if i change the bootloader ?

RE: Flash NRF52 by UART

Nguyen Hoan Hoang — Mon, 23 Oct 2017 23:31:09 GMT

@Flavien, the nRF5x cannot be programmed via UART but you can use the IDAP-Link with Arduino IDE to program nRF chip. I have tested it myself sometimes ago. I may able to help to set it up.

RE: Flash NRF52 by UART

endnode — Mon, 23 Oct 2017 21:38:26 GMT

For everyone and noone;)

RE: Flash NRF52 by UART

Flavien — Mon, 23 Oct 2017 21:03:12 GMT

I am not really the first for Arduino SDK... but my project have to be simple programming by everyone...

RE: Flash NRF52 by UART

endnode — Mon, 23 Oct 2017 20:49:32 GMT

Well you don't need anything else then two PINs (+ GND and VDD of course) to do SWD... but as you wish. Good luck with Arduino SDK;)

RE: Flash NRF52 by UART

Flavien — Mon, 23 Oct 2017 20:46:46 GMT

I havn't too much place on my board, so I would like combine the USB port and the programmer port.

RE: Flash NRF52 by UART

endnode — Mon, 23 Oct 2017 20:26:15 GMT

As I said: NO, this will only work if you have Arduino compatible bootloader pre-loaded. To be honest I don't see single advantage of using this set-up when you can simply use SWD through any nRF5x Dev Kit or other kind of programmer like SEGGER J-Link or STlink... it might have only one advantage: UART is better choice if you bootload the chip from another embedded system (because implementing SWD is bigger effort then UART). But that isn't your case I suppose.

RE: Flash NRF52 by UART

Flavien — Mon, 23 Oct 2017 20:11:36 GMT

Hi endnode and thank very much for your answer.

I would like to program my nrf52 with Arduino IDE and a bridge USB - UART. Do you know if that will works without bootloader ??

Sorry I am a beginner with bootloader.

Flavien

RE: Flash NRF52 by UART

endnode — Mon, 23 Oct 2017 19:55:47 GMT

Hi, there is no bootloader on nRF5x chips, it natively supports only JTAG/SWD. So whatever you want to support on top of it you need to a) write it/load it and b) make it coexisting with other FW components you want to load later (like radio stack, APP etc.) If you take nRF5 SDK there is example bootloader from Nordic which supports wired UART. If you don't like that then you need to write yours or try to google (e.g. on GitHub).