UP Squared V2 40pin GPIO of and RS 232 /422 (CN 11) Pitch 1.0mm pin

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1. How can I use 40pin GPIO of UP Squared V2. I cannot use "emutex/RPi.GPIO" or "marr" to write or read the GPIO.
2. How I can find RS 232 /422 (CN 11) Port.2*3P Pitch 1.0mm. I try to find it to use RS232 but I am not found. Please suggest.