Hi, as I know, the 8250 chip does not support RS485 rx/tx hw switching. You can do sw switching on some gpio. HW switching suports 16550 or higher. Dne 28.7.2014 v 17:19 Ricardo Ribalda Delgado napsal(a):
Hello I have a device with a Fintek F81216A LPC to 4 Uart device. One of the uarts is used as half duplex rs485 serial port. This means that it needs to be configured properly (logical level of rts, delays, etc...) I see that there is an API on the kernel to do this (TIOCGRS485), unfortunately the 8250 driver does not support it. 1) Is there any interest on supporting this kind of hardware on the kernel?
It would be nice.
2) Some driver that I could use for inspiration?
Try Advantech web site, they have some, but not GPL.
Thanks and best regards!
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