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Document analogReference() parameter values for megaAVR #596

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May 17, 2019
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Document analogReference() parameter values for megaAVR #596

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12 changes: 12 additions & 0 deletions Language/Functions/Analog IO/analogReference.adoc
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Expand Up @@ -36,6 +36,18 @@ Arduino SAMD Boards (Zero, etc.)
* AR_INTERNAL2V23: a built-in 2.23V reference
* AR_EXTERNAL: the voltage applied to the AREF pin is used as the reference

Arduino megaAVR Boards (Uno WiFi Rev2)

* DEFAULT: a built-in 0.55V reference
* INTERNAL: a built-in 0.55V reference
* VDD: Vdd of the ATmega4809. 5V on the Uno WiFi Rev2
* INTERNAL0V55: a built-in 0.55V reference
* INTERNAL1V1: a built-in 1.1V reference
* INTERNAL1V5: a built-in 1.5V reference
* INTERNAL2V5: a built-in 2.5V reference
* INTERNAL4V3: a built-in 4.3V reference
* EXTERNAL: the voltage applied to the AREF pin (0 to 5V only) is used as the reference

Arduino SAM Boards (Due)

* AR_DEFAULT: the default analog reference of 3.3V. This is the only supported option for the Due.
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