Hello,
I would like to use the RS485 with serial port C (ttymxc3) on the demo board.
However, I can not set the flag SER_RS485_ENABLED in the configuration!
In Buildroot's menuconfig I activated the RS485 with BR2_PACKAGE_RS485CONF = y
rs485conf.flags = SER_RS485_ENABLED;
ioctl(fd, TIOCSRS485, &rs485conf); // write config
ioctl(fd, TIOCGRS485, &rs485conf) ; // read config again
printf ("\nflags: %x", rs485conf.flags); // output -> flags: 0
What else is to be done?
Best regards
Thomas