docs: explain aio numbering scheme

Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
2014-11-21 11:58:08 +00:00
parent 8f9059767f
commit 97e00d9298
3 changed files with 6 additions and 0 deletions
--- a/docs/edison.md
+++ b/docs/edison.md
@@ -22,6 +22,8 @@ in libmraa:
 - SPI exposed is also used for the ADC. Try not to use your own CS.
 - ADC kernel module will return 12bit number but the ADC itself only has an
  accuracy of 10bits. This ADC is only included on the arduino board.
+- AIO pins are treated as 0-5 in mraa_aio_init() but as 14-19 for everything
+  else. Therefore use mraa_gpio_init(14) to use A0 as a Gpio

 Intel breakout board
 --------------------