--- In "dieghuot" <> wrote:
>
> I cannot communicate with the RS-485 port. So far I have done the
> following:
>
> 1. Connected TS7800(port2, pins1-6)-->RS485toUSBconverter
> 2. Opened /dev/ttyS1 (for COM2);
> 3. Cleared 0xE800000C top bit (bit 15) to zero to set RS485 mode;
> 4. Disabled both getty lines in /etc/inittab;
> 5. Modified and tested multiple port configurations (using termios
> functions).
>
> I have no problems using RS-232 and see no software errors when
> configuring any port. At this point I am wondering if my board has
> the rs485 option (I did purchase it).
>
> Does anybody know of any way to check if the option is installed? I
> tried looking at the chips but cannot access them all.
>
> Any comments/suggestions would be greatly appreciated.
>
I can talk to COM2 via RS-232. Do I need to do anything to enable rs-
485 versus rs-232? Thanks.
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