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GPIO in the kernel: an introduction

GPIO in the kernel: an introduction

Posted Jan 28, 2013 21:27 UTC (Mon) by BenHutchings (subscriber, #37955)
In reply to: GPIO in the kernel: an introduction by russell
Parent article: GPIO in the kernel: an introduction

1. GPIO can be both output and input at the same time. Yep you may want to read back the value of an output.

Indeed this is an absolute requirement for a GPIO used as an I2C SCL line.


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