nrf52 + contiki + bl652 mapping issue

[GiulianoFranchetto]

Hi,

We tried to run the blinky example in the contiki source tree, and we had a strange behaviour. The example code is here, and the hardware is here.

The issue is that the mapped LED1-4 and BUTTON1-4 mapped in the source code doesn't correspond to their LED1-4 / BUTTON1-4 hardware counterpart. In fact, only the LED2 and BUTTON2 are mapped (to LED4 and BUTTON4).

However, if I use the "blink" example code in the nRF52 SDK, everything runs fine.

Is there any incompatibility between the contiki hardware pin definition and the nRF52, or did I miss something?

Best regards

[Jørgen Holmefjord]

Hi,

On the nRF52-DK, the button and LEDs are connected to pins P0.13-P0.20.

Did you test it on the BL652 DevKit or some other board? From the BL652 Datasheet I can only find these two LED and Button mappings:

Pin #  Pin Name  nRF52832 QFN Pin   nRF52832 QFN Name   Comment
13     SIO_11    14                 PO.11               Laird Devkit: BUTTON1
29     SIO_15    18                 PO.15               Laird Devkit: BUTTON2
30     SIO_17    20                 PO.17               Laird Devkit: LED1
31     SIO_19    22                 PO.19               Laird Devkit: LED2

I'm not sure about the pin-mappings in Contiki, that you should ask Contiki developers/community about.

Best regards, Jørgen