Setting PB0 aka PIN 8 aka DPIN_PWR high when plugged into USB
It seems to me that setting PIN 8 high while the Hexbright is powered through USB is not safe. This is because the CP2102 itself contains a voltage regulator and the respective pin is connected to VCC (which explains why the ATmega MCU is always powered when connected to USB), so if I put high level to pin 1 (EN) on the MIC5353, then the outputs from these two regulators are short-circuited, and I'm not sure if it is safe to do so. Does anyone know?
And is there any way to detect whether the CP2102 is powered on?
Is this a good question?