I have some trouble running an Raspberry Pi IOC with serial communication in parity-mode "even".
I adapted an online example and got it running without problems as long as the asynsetOption parity in st.cmd is "none" asynSetOption("SERIALPORT",-1,"parity","none"). I checked the communication with an oszilloscope and it is fine. As soon as I change the parity to "even" (thats what I read from the ASYN4.38 manual) it fails.
Base is R7.0.3.1 I tried ASYN 4-36 and 4-38 I tried "even" "EVEN" and "Even"