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** ChibiOS/RT port for ARM-Cortex-M4 Freedom Board K20D50M. **
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** TARGET **
The demo runs on an Freescale Freedom K20D50M board.
** The Demo **
Generates an interrupt from an external button on PTA1. Assumes a button
is connected between PTA1 and ground. Uses the internal pullup on PTA1.
When the button is pressed the green led will toggle.
** Build Procedure **
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