first commit and add gitignore, README.md

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ChesterTseng 2016-06-04 19:09:35 +08:00
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Example Description
This example describes how to use GPIO read/write by mbed api.
Requirement Components:
a LED
a push button
Pin name PC_4 and PC_5 map to GPIOC_4 and GPIOC_5:
- PC_4 as input with internal pull-high, connect a push button to this pin and ground.
- PC_5 as output, connect a LED to this pin and ground.
In this example, the LED is on when the push button is pressed.