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fixed GPIO read and added automated test sketch #1

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wants to merge 28 commits into from

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@romilly

The previous version read OLAT instead of GPIO.

We've added automated tests which require a simple test harness that uses Arduino digital pins to read from/write to the MCP23008 ports to verify the library code.

We will happily add library code and tests to cover interrupts and pull-up functionality if that would be useful.

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Commits on Apr 2, 2012
  1. corrected register address for readGPIO

    Romilly Cocking authored
  2. added test

    Romilly Cocking authored
  3. added image of test rig

    Romilly Cocking authored
  4. clarified test setup in comment

    Romilly Cocking authored
  5. added diagram for test rig

    Romilly Cocking authored
  6. tidied up arduino read/write

    Romilly Cocking authored
  7. refactoring bit twiddling

    Romilly Cocking authored
  8. refactor pullUp method

    Romilly Cocking authored
  9. refactor digitalRead method

    Romilly Cocking authored
Commits on Apr 12, 2012
  1. failing test for IPOL

    Romilly Cocking authored
  2. reset IPOL before each test

    Romilly Cocking authored
Commits on May 1, 2012
  1. @sf105

    ignores

    sf105 authored
  2. @sf105
  3. @sf105
  4. @sf105

    readme formatting

    sf105 authored
  5. @sf105

    readme formatting

    sf105 authored
  6. @sf105
  7. @sf105

    minor refactor

    sf105 authored
Commits on May 2, 2012
  1. @sf105
  2. @sf105
Commits on May 3, 2012
  1. @sf105
  2. @sf105

    more tidy up, all the pins

    sf105 authored
  3. @sf105
  4. @sf105

    interim checkin

    sf105 authored
  5. @sf105

    tidy ups

    sf105 authored
Commits on May 4, 2012
  1. @sf105

    working interrupt tests

    sf105 authored
Commits on May 7, 2012
  1. @sf105

    refactor test structure

    sf105 authored
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