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chipKIT32 / chipKIT-core

Downloadable chipKIT core for use with Arduino 1.6 - 1.8+ IDE, PlatformIO, and UECIDE
http://chipkit.net/
Apache License 2.0
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analogReference() does not work for WiFire or OpenScope boards #279

Open JacobChrist opened 8 years ago

JacobChrist commented 8 years ago

Notes from topic posted on forum:

Some magic tricks had to be performed when Digilent make the chipKIT WiFire due to building the boards with different revisions of uC Silicone. Because of this the ADC code is not quite up to snuff at this time. Today we had to use and external reference and we ended up adding the following code to setup() to get this to work. This was tested on both a Rev B and Rev C WiFire boards. This code will use +VREF and AVss as your referances. If you need a different configuration refer the the ADC datasheet for the MZ parts to determine how these bits need to be set.

if defined(32MZ2048ECG100)

AD1CON3bits.VREFSEL = 0b001; // no need for EF code on an EF processor, just use the compiler supplied headers

elif defined(32MZ2048EFG100)

ADCCON3bits.VREFSEL = 0b001;

endif

Jacob

EmbeddedMan commented 7 years ago

Jacob, do your recent pull requests satisfy this issue?

JacobChrist commented 7 years ago

No, I found this issue when doing the latest changes. This is also not fixed for the MZ implementation I did. If I get a chance I can fix this. We have it working on the project we are working on but we implemented it outside of the core.

Jacob

On Nov 27, 2016 7:05 PM, "Brian Schmalz" notifications@github.com wrote:

Jacob, do your recent pull requests satisfy this issue?

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub https://github.com/chipKIT32/chipKIT-core/issues/279#issuecomment-263173594, or mute the thread https://github.com/notifications/unsubscribe-auth/AAMGa8vsRWgV8c2FhTXgsjK1nr5XEdYfks5rCkT_gaJpZM4KeU5X .