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Can miniscope i2c be switched to 400 kHz post configuration? #334

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jonnew opened this issue Oct 15, 2024 · 1 comment · Fixed by #340
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Can miniscope i2c be switched to 400 kHz post configuration? #334

jonnew opened this issue Oct 15, 2024 · 1 comment · Fixed by #340
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jonnew commented Oct 15, 2024

Miniscope i2c is turned to 80 kHz during configuration to increase reliability. However, this limits BNO055 sample rate. Does returning it to 400 kHz following configuration affect stability?
@jonnew jonnew added this to the 0.4.0 milestone Oct 15, 2024
@jonnew jonnew self-assigned this Oct 15, 2024
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jonnew commented Oct 21, 2024

Empirical testing revealed that 400 kHz is unstable even for normal access to the chips on the board. I think this i2c bus has some added capacitance for house-of-cards style error fixing. This probably leads to this limit. However, we have not tested in a while if 200 kHz could just work for all configuration without changing. Lets give that a try before switching the rate all over the place.

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Reduced I2C clock when talking to atMega on miniscope open-ephys/bonsai-onix1
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