> From: linux-serial-owner@xxxxxxxxxxxxxxx [mailto:linux-serial- > owner@xxxxxxxxxxxxxxx] On Behalf Of JZabalza@xxxxxxxxxxx > Sent: January 10, 2008 3:27 AM > To: linux-serial > Subject: RE: Handling RTS > > Thanks for your response. I have a PC, so dmesg said > > serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A > > How I said, I just handle RTS but from userland. This means a big > latency between RTS activation and begin out data. I want only reduce this > latency activating RTS on driver. My question is, is this *protocol* > implemented actually or I must implement them. I'm not an expert on the current 8250 driver, but I believe you will have to implement your 485 control. We may have done this in one of our drivers, but in my quick search I can't find one that doesn't take advantage of the extra features supplied by the UARTs we use. Best of luck, Chris - To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
