I have a simple script to run UART 3 on my OpenMV Cam M7. I have attached it.
The UART voltage waveform does not seem to be correct.
I have the scope probe attached to pin 4 of the Cam M7.
I have the probe ground attached to the GND pin of the Cam M7.
The script sends chr(24), binary ‘00011000’ from the UART3.
The waveform voltage output is ---- 3.26 Volts for 418 us----2.95 Volts for 208 us----3.26 Volts for 312us.
The bit pattern timing is correct, however THE VOLTAGES ARE WRONG.
uartsimple_1.py (794 Bytes)