Can’t write data from Orange Pi to Nextion

TryToProg

I try to communicate nextion display with Orange pi lite, I can receive data from the display, but can’t send it using WiringSerial library or serial library for python.
if I use common file write() in C program, and try to catch an error by errno.h, it gives me:
value of errno 14
error printed by errno: bad address.
Code for python looks like:

import time
import serial

ser= serial.Serial(‘/dev/ttyS3’,9600)
EndCom = b’xffxffxff’
while True:
    temp=“page 0”
    time.sleep(0.5)
    temp=temp.encode(‘ascii’)
    ser.write( temp + EndCom)

salamiride

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