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SWD Debug and Sharing GPIO on a K22

Question asked by Matthew Thorne on Dec 6, 2013
Latest reply on Dec 9, 2013 by Hui_Ma

Hi Everyone, new to this forum and no doubt will have an array of technical questions after switching from PIC to Kinetis hardware development...




Going to be using a Kinetis K22 80pin package, and soucring the reference manuals, I will be using SWD for debug/programming.


What should I connect my GROUNDDetect Line to? Is it used on SWD?


Also, the 3v3... is that a 'sense' for the programmer or a power to my MCU? I will be powering the MCU locally, as there are several other 3V3 devices on the board sharing that net.