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Reference for Wiring version 0024+. If you have a previous version, use the reference included with your software. If you see any errors or have any comments, let us know.

Name | ### portMode()
Examples |
    int outport = 1;
    int val = 0;

    void setup() {
      portMode(outport, OUTPUT);
    }

    void loop() {
      portWrite(outport, val);
      val = val + 1;
      if(val > 255)
      {
        val = 0;
      }
    }
Description | The portMode() method sets a specified digital I/O port as INPUT or OUTPUT. A digital I/O port is a group of 8 pins. By writing 0 to a port it will set individually each of the 8 pins to 0 (LOW). Possible values range from 0 to 255. It possible to read or write a value of a digital I/O port by using the portRead() and portWrite() methods.
Syntax |
    portMode(port,value)
Parameters |
port | Port number
value | int
Returns | None
Usage | Application
Related | INPUT OUTPUT portRead() portWrite()

Updated on November 01, 2009 11:33:46pm PST