3.2.1 Debug interface Signals with SPI and GPIO capability are used to connect directly to the SWD of the K22F. These signals are also brought out to a standard 10-pin (0.05”) Cortex debug connector (J11). It is possible to isolate the K22F MCU from the OpenSDAv2 circuit and use J11 to connect to an off-board MCU. To accomplish this, cut the trace on the bottom side of the PCB that connects J7 pin 2 to J11 pin 4. This will disconnect the SWD_CLK pin to the K22F so that it will not interfere with communication to an off-board MCU connected to J7. The J11 header is populated by default. A mating cable, such as a Samtec FFSD IDC cable, can then be used to connect from the OpenSDAv2 of the FRDM-K22F to an off-board SWD connector.You can still use the FRDM-K22F as a prototype board. You should solder a pinheader an use a jumper if you want to use the FRDM-K22F as a prototype board. See also OpenOCD/CMSIS-DAP Debugging with Eclipse and without an IDE
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kinetisdesignstudio.png | r1 | manage | 71.8 K | 2016-03-30 - 20:27 | PeterSchmid |