Porting PVision to Maple — Wire.h scl seems to start low

(2 posts) (1 voice)

jamiezigelbaum
Member

I'm porting the arduino PVision library (https://github.com/joksan/Wii_Remote_Camera_Mouse/tree/master/PVision) to Maple which will make it much easier to read from a Wiimote / Pixart IR sensor (no externals save for two pullup resistors).

You can see my code here: https://github.com/NoContour/wiicamMaple

Looking at the output from scl on my scope and it seems to idle low — I am learning the spec for i2c now, it seems to me it should be high. I am not able to read from the IR sensor and wondering if this has something to do with it.

Thanks for any help.

Posted 2 years ago #
jamiezigelbaum
Member

This is resolved.

Thought it was the sensor was holding scl low, clock stretching, but even though it has a micro in there I doubt it needs to delay like that. But even if it did, in this case my sensor's busted. Burned on extraction.

It looks like the PVision library is working just fine on Maple, only had to change the include from WConstants.h to wirish.h.

Posted 2 years ago #

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