Latency of a digital input sent from another Pi Pico in peripheral mode.

Measured by connecting the peripheral to the main Pi Pico, toggling a digital pin on the peripheral, and timing how long it takes that signal to reach a target device over USB from the main Pi Pico.

microcontroller Pi Pico
firmware new
controller Pi Pico in Peripheral mode
peripheral input direct
poll rate 1 ms
min 0.48 ms
max 1.64 ms
avg 0.84 ms
stddev 0.26 ms
%on time 96%
%1f skip 4%
%2f skip 0%
%3f skip 0%

Note that in the below graph, you can click on legends to show and hide different controllers when comparing.