Building a development board to flash the nRF52833

RE: Building a development board to flash the nRF52833

Nguyen Hoan Hoang — Sat, 04 Apr 2020 05:57:34 GMT

the other pins are the swd/jtag for flashing. The IDAP-Link supports both mode SWD and JTAG. The nRF series programming are in SWD mode. Other MCU such as the LCP1769 or STM32 has JTAG mode.

SO you need to connect TVcc, SWDIO SWDCLK, GND for flashing and debugging your board

RE: Building a development board to flash the nRF52833

Daniel V — Sat, 04 Apr 2020 05:30:57 GMT

Nguyen Hoan Hoang, I am confused about the other pins in the table above. I do need to connect them, right? Which pins on the nRF52833 do they connect to? I can’t find any reference anywhere.

RE: Building a development board to flash the nRF52833

Nguyen Hoan Hoang — Sat, 04 Apr 2020 00:48:33 GMT

Is exactly. It has a UART to USB bridge. You will see a com port on your PC. T_RXD mean Target RX, connect you RXD to it. The same with TXD, RTS, CTS

RE: Building a development board to flash the nRF52833

Daniel V — Fri, 03 Apr 2020 06:39:05 GMT

Nguyen Hoan Hoang

Ah so if I used the IDAP-Link I would not even need the FT232RL USB to serial breakout board, right?

According to page 13 of the IDAP-Link user guide, I'd be dealing with the IDAP-Link Rev. 3 with 16 pins. I am trying then to figure out which pins on the nRF52833 correspond to which of the pins in this IDAP-Link connector table:

In other words, I am trying to map 1-16 in this table to the correct pins on the BLE module, with pins/pin functions described on pages 19-21 of this document. I think I can infer some of the pins:

2 maps to pin 43
4 maps to pin 22
7 maps to pin 40
11 maps to pin 32
12 maps to pin 31

Beyond that, unfortunately, I am lost. I don't see any mention even of RTS/CTS or other labels in the data sheet. Is there some other reference for the correct connections?

Again, thank you for your help, and I really appreciate your patience.

RE: Building a development board to flash the nRF52833

Nguyen Hoan Hoang — Fri, 03 Apr 2020 05:03:12 GMT

This is an alternative solution. Instead of JLink, you can use the IDAP-Link to flash or put IDAP-M (IDAP-Link module version) on your board to make yourself a dev kit. The IDAP has software made for flashing nRF5x series.

RE: Building a development board to flash the nRF52833

Daniel V — Fri, 03 Apr 2020 04:41:30 GMT

Thank you for your great answer! Is it possible to flash the chip without a JLink or the development kit? The JLink is very expensive and the development kit defeats the purpose of this project.

RE: Building a development board to flash the nRF52833

Sunil vignesh — Fri, 03 Apr 2020 04:01:34 GMT

Hi Daniel,

To answering your question

[quote userid="89280" url="~/f/nordic-q-a/59837/building-a-development-board-to-flash-the-nrf52833"]prepare and upload a program to the chip from Segger.[/quote]

preparation just look at the examples from infocenter and build it. link

uploading to custom board where you need either development board of nRF or J-Link

if you have DK

link1

link2 .

in link2 you see that you can use P19. pin to program custom board.

connection like this

[quote userid="89280" url="~/f/nordic-q-a/59837/building-a-development-board-to-flash-the-nrf52833"] do I not even need a bootloader? [/quote]

Yes, it is need when your going to update the code (application or Softdevice or Bootloader ) over the Air. (OTA / DFU)

otherwise it is not necessary

only SD + application is enough to run and test the code. link link2