OpenLCD
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Please reset mode between I2C transactions
The start of an I2C transaction needs to be in a defined mode. That or there needs to be a sequence of bytes that, in all modes, resets the state. If it's not (and as it stands, from what I can see), it is completely impossible to make a reliable driver for this product. Yes, it may work 99% of the time, but it cannot be made reliable. Right now, there is no 'correct'.