Stlink CDC ACM packet latency

[Uwe Bonnes]

Posted on January 21, 2016 at 13:31

Hello,

it seems that the Stlink CDC ACM implementation only sends out RX packet to the PC if the RX buffer is either full or after a delay of 100 ms. The delay when sending non-full RX packets is enourmous and slows down ''send message'' <-> ''expect response'' setups extrem. Is this delay settable somehow?

E.g. the FTDI implementation exports an API to set and read this latency.

#stlink #cdc-acm.-packet-latency