Configure P0.14 and P0.15 as SCL and SDA

RE: Configure P0.14 and P0.15 as SCL and SDA

Simonr — Mon, 15 Apr 2019 08:39:08 GMT

Hi Laurent

Due to the Easter holiday you will have to expect a delay in replies, sorry for the inconvenience!

Normal mode can always be resumed by performing a "hard-reset" through the SWD interface:

Enable reset through the RESET register in the POWER peripheral.
Hold the SWDCLK and SWDIO/nRESET line low for a minimum of 100 μs.

Best regards,

Simon

RE: Configure P0.14 and P0.15 as SCL and SDA

Laurent Bourassa — Fri, 12 Apr 2019 15:35:39 GMT

Hi Simon,

Yes, this workaround is already implemented in the project in system_nrf52.c. I tried to put it again in main.c just to make sure, but it's still the same. Also, I'm not sure how to disable debug mode : I'm downloading the Release version so debug mode should be off (?).

NDEBUG is defined in the solution preprocessor for Release.

Laurent

RE: Configure P0.14 and P0.15 as SCL and SDA

Simonr — Fri, 12 Apr 2019 11:23:25 GMT

Hi Laurent

This errata explains that the TRACEDATA pins are automatically enabled as Trace pins when in debug mode. I am guessing this is what's happening. Please check if the workaround is implemented in your project, or disable DEBUG mode.

Best regards,

Simon