I2C Bus Stuckness #1
Description
For the first time in a very long time, I got our classic "i2c bus stuckness," where every attempt to read anything from the I2C bus times out until the entire device is power cycled (not just rebooted).
I had thought that our I2C extender plus an aggressive pull-up resistor would fix this for good. Apparently it does not.
The question is now: can we provide a way to force-power cycle the device, or at least just the I2C bus, on the TopHat? For instance, can we mark two GPIO pins as "I2C reset" and then use those to completely power down the I2C bus when triggered?
It's not crystal-clear that this would work, but if @MetalCard can produce a breadboard prototype, even if it's just a transistor that lets us temporarly cut power to I2C through a GPIO pin, I can see if we can reset the bus that way.