RE: Long term use of TRACECLK

Michaud — Fri, 23 Nov 2018 14:23:46 GMT

Thanks for your quick tests and response.

So , i need a 16Mhz or an Hardware tips ...

RE: Long term use of TRACECLK

Sigurd — Fri, 23 Nov 2018 13:45:34 GMT

Hi,

[quote user=""]1 - In my interpretation, it's not possible to use a PWM à 16Mhz using the 32Mhz HFXO ?[/quote]

Your interpretation is correct. That is not possible.

[quote user=""]2- Could i use the TRACECLK PIN and TRACEPORTSPEED configuration register to produce this clock source ?[/quote]

I did some quick tests with this, and I was only able to get the TRACECLK to output 16Mhz when the debugger was attached. The duty cycle was varying between 65% to 75% , and the frequency was varying between 15.62 MHz and 16.67 MHz

So you will need to use a separate crystal for the external device.