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DigitalWrite in Teensy microcontroller?

  1. May 17, 2014 #1
    I'm trying to use the function pinMode so that I can use an analog pin as a digital output pin.
    But when I debug the source file, it states that OUTPUT and PIN_AO is undeclared, and that pinMode and digitalWrite are implicit declarations. I assume I'm missing a library which i should include? What should I do to correct these problems?

    pinMode(PIN_A0, OUTPUT);
    digitalWrite(PIN_AO, HIGH);

    // This was written in main
  2. jcsd
  3. May 17, 2014 #2


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    Science Advisor
    Homework Helper

    Have you tried reading the documentation for the functions and constants? That should tell you which header file(s) you need to include.
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