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K10  HOW configure PTA19(XTAL0) AS  GPIO

Question asked by cheng dong on Jun 9, 2019
Latest reply on Jun 11, 2019 by Kerry Zhou


      The MCU is MK10DX128VFM5, when I use the external clock and configure  PORTA->PCR[19]= PORT_PCR_MUX(1), this GPIO alternate function is configured GPIO(0x01),but this pin is still output clock signal。it can't output 1 or 0.

     when I use the internal clock, this pin can use as a GPIO.

     so I would know how to configure  PTA19 as a GPIO.