The green LED LD1 (LED1) will not light up when adapting ble_blinky_c for nRF52840 dongle.

RE: The green LED LD1 (LED1) will not light up when adapting ble_blinky_c for nRF52840 dongle.

ovrebekk — Thu, 10 Jun 2021 08:37:30 GMT

I am happy to help Gordon, I will consider the case resolved then.

RE: The green LED LD1 (LED1) will not light up when adapting ble_blinky_c for nRF52840 dongle.

gfmoore — Wed, 09 Jun 2021 12:36:23 GMT

Thanks.

Yes I've read that article (many times) 🙂 Always worth re-reading when you are starting out.

This can be closed as far as I'm concerned.

RE: The green LED LD1 (LED1) will not light up when adapting ble_blinky_c for nRF52840 dongle.

ovrebekk — Wed, 09 Jun 2021 07:50:55 GMT

My bad, green might be correct. My own dongle didn't work, and I had to get someone else to test it for me ;)

One of my colleagues wrote a blog explaining the main steps needed to convert a project for use with the PCA10059:
https://devzone.nordicsemi.com/nordic/short-range-guides/b/getting-started/posts/nrf52840-dongle-programming-tutorial

Unfortunately it doesn't mention the logging issue (since most examples don't use UART logging by default), but I have mentioned this to him in case he wants to update the blog with this information later.

Best regards
Torbjørn

RE: The green LED LD1 (LED1) will not light up when adapting ble_blinky_c for nRF52840 dongle.

gfmoore — Tue, 08 Jun 2021 10:56:53 GMT

Okay, now I can see the LED lit up green (yellow???).

Also noted that going lower level I should use

nrf_gpio_pin_clear(NRF_GPIO_PIN_MAP(0,6)); //set low to light led

just in case anyone else wants to do that sort of thing! ;)

However, though I understand your point about having a dk, [though I am currently unemployed and was just wanting to learn stuff (and I've now ordered a dk though I can't really/didn't want to afford it!)], many people will want to know how they convert the dk code into the dongle code. Was there some place I could have gone to find out that information? I certainly never expected that I would need to unset that flag!

Thanks anyway.

RE: The green LED LD1 (LED1) will not light up when adapting ble_blinky_c for nRF52840 dongle.

ovrebekk — Tue, 08 Jun 2021 10:06:28 GMT

The dongle was never intended to be a development tool on the level of the development kit, but rather a companion device you can use for hardware prototyping, field testing etc. Getting a DK is definitely the way to go 🙂

Regarding your issue I believe it is caused by the UART logging still being enabled. On the PCA10059 dongle there is no USB to UART converter like on the DK, and trying to output log data to the UART will cause an assert in the code.

Could you try to set NRF_LOG_ENABLED = 0 in sdk_config.h and rebuild your project?

Then it should work fine. At the start the yellow LED should light up, until you connect to it at which point the red LED turns on instead.

Best regards
Torbjørn