WIFIO is a dual Arduino WIFI module (ESP8266+ATMEGA328P) FCC approve-able with transferable licence. Can use the 328P for I/O expansion also...

Moderator: igrr

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By sgtourism
#94505 ... as received by millis(), micros(), system_get_time(), et al... Does it get affected by WiFi pauses?

I've gone to great lengths to try and get a web server to be perfectly stable. Considering, at the lowest level, it depends on lwIP, TCP, IP, link layer, ESP hardware, router and airwave congestion, perfect stability is impossible. A simple collision on the WiFi airwaves can loose a packet that requires a resend which bubbles up to the top in the form of a momentary pause in the transfer of data.

I would assume that the time base is tied to something immune to pausing... like a crystal. However, there are a lot of steps between the crystal and code getting a return u32 millis(). I wanted to check with the Advanced experts on this forum to see if my assumption is correct.