## Information Center for ARM

## Example description

     GPIO

     It starts by blinking LED1.
    Note:
     After power-up the controller get clock from internal RC oscillator that
     is unstable and may fail with J-Link auto detect, therefore adaptive clocking
     should always be used. The adaptive clock can be select from menu:
     Project->Options..., section Debugger->J-Link/J-Trace  JTAG Speed - Adaptive.