Measured 34.23ms from 3.3V stable to first pin change on a pico2 with micropython.
Setup is to power a pico from a LIPO battery, with a switch on high side. Have a few capacitors on 3.3V line in addition to the onboard capacitors (did this setup on an existing project), might slow down 3.3V settle time a bit.
Then toggle a pin controlled with micropython. Minimal main.py code is to define the pin, toggle pin a few times.
Measurement is with a logic analyzer, trigger on 3.3V and measure to first pin change.
Setup is to power a pico from a LIPO battery, with a switch on high side. Have a few capacitors on 3.3V line in addition to the onboard capacitors (did this setup on an existing project), might slow down 3.3V settle time a bit.
Then toggle a pin controlled with micropython. Minimal main.py code is to define the pin, toggle pin a few times.
Measurement is with a logic analyzer, trigger on 3.3V and measure to first pin change.
Code:
pin = machine.Pin(15, machine.Pin.OUT, value=1)pin.toggle()pin.toggle()pin.toggle()switch it on 25ms earlier ?I'd like to reach something like sub 10mS
Statistics: Posted by ghp — Wed Jan 29, 2025 5:28 pm