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General • Re: RP2040 PIO Input Glitches SM to addr 0 at WAIT GPIO Instruction

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Some RTT and spread measurements:

WAIT PIN
PIO-RTT-WAIT-PIN_125_Mhz.gif
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WAIT GPIO (deadly)
PIO-RTT-WAIT-GPIO_125_Mhz.gif
P.S.
Where is the extra latency coming from‽
Unfortunately I'm not sure. I have asked on the Pico Discord and users seemed as stumped as me. I'll keep an eye out for any resolution to this problem. But for now, if anyone knows, please post a comment.
PAD delay + external load

Statistics: Posted by gmx — Fri Jun 06, 2025 4:35 am



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