Add SENSE_5V adc channel definition.

tylercrumpton · tylercrumpton · commit b2adb4cfd613 · 2016-02-03T14:16:58.000-06:00
diff --git a/README.md b/README.md
@@ -43,7 +43,8 @@ Pins can be referenced as follows:
 | Digital  | D0 - D13        |
 | Analog   | A0 - A5         |
 | i2c      | SDA, SCL        |
-} LED pin  | LED_PIN         |
+| LED pin  | LED_PIN         |
+| 5V sense | SENSE_5V        |
 
 Setting up the SPI pins is very simple, too:
 
diff --git a/pyduinoincludes/io.py b/pyduinoincludes/io.py
@@ -30,6 +30,7 @@
 A3 = 5
 A4 = 6
 A5 = 7
+SENSE_5V = 2
 
 # User-controlled LED
 LED_PIN = 18
