topic Re: K22 detect if in jtag debug mode in Kinetis Microcontrollers

K22 detect if in jtag debug mode

rubenjonsson — Mon, 14 Mar 2016 12:01:38 GMT

Is there an easy way to detect if the program in a K22 is running from the debugger over the JTAG interface or if it is started standalone?

I have added some LEDs to the jtag interface pins which I want to use when not running from the debugger. I could check the _DEBUG define at compile time to enable the GPIOs instead of the JTAG interface but I would rather be able to do this at runtime so it works with any build.

Re: K22 detect if in jtag debug mode

Jorge_Gonzalez — Wed, 16 Mar 2016 00:45:23 GMT

Hello Ruben Jonsson:

The ARM register DHCSR should help you to achieve what you need. See the next discussion about the same topic:

Flag Status: SRS1_JTAG

Best regards!
Jorge Gonzalez

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Re: K22 detect if in jtag debug mode

rubenjonsson — Wed, 16 Mar 2016 08:58:05 GMT

Works great, thanks.