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Reference for Wiring version 1.0 Build 0100+ If you have a previous version, use the reference included with your software. If 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 July 07, 2011 11:08:47pm PDT