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How to Enable Kinetis Trace

Question asked by Mike Atkins on Sep 24, 2012
Latest reply on Jul 28, 2015 by DaveTonyCook

 

TRACE pins on the K20 power up to MUX function 5.  How is the part and signals set to allow trace?

 

Is there a compile option in MQX to initialize these pins to MUX setting 7, or is up to the application to set them?  Some other boot option?

 

 

 

These are the power up states, and MQX does not initialized them to the TRACE function, which is MUX setting = 7 (JTAG/TRACE)

 

On the K20DN512, 144 pin, these are:

 

* Pin 58, PTA6, TRACE-CLKOUT --- documentation says default is "disabled", MUX setting 5 is undefined

 

* Pin 59, PTA7, TRACE-D3 ---- default is ADC0_SE10, MUX setting 5 is undefined

 

* Pin 60, PTA8, TRACE-D2 ---- default is ADC0_SE11, MUX setting 5 is undefined

 

* Pin 61, PTA9, TRACE-D1 ---- default is "disabled", MUX setting 5 is undefined

 

* Pin 62, PTA10, TRACE-D0 ---- default is "disabled", MUX setting 5 is undefined

 

 

 

 

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