Hello, I have this device: https://www.olimex.com/Products/Breadboarding/BB-CH340T/open-source-hardware which is detected by NetBSD as: uchcom0 at uhub2 port 3 uchcom0: QinHeng Electronics USB2.0-Serial, rev 1.10/2.54, addr 11 uchcom0: CH341 detected ucom2 at uchcom0
AFAIK (it's light-gray on gray) the chip is marked H340T, so it's probably misdetected as H341 but reading the driver sources it shouldn't make a difference. The problem is it doesnt' work. If I connected a known-working serial TX to the CH340 rx uchcom0 doesn't receive anything (used with cu). If I connect the CH340 tx to a known-working serial RX, I get characters but with bit changes which usually indicates a speed mismatch between transmitter and receiver (both are at 9600bps). trying speeds between 4800 and 57600 on the uchcom0 side doens't give me a working transmit. Does anyone know what could be missing in our driver ? -- Manuel Bouyer <[email protected]> NetBSD: 26 ans d'experience feront toujours la difference --
