[Avila] GW2201 problem with sending over RS485.

[Johan Winäs]

I have the board working fine for the RS232 ports
Recive works fine with the RS485 ports, but no transmitt.

If I connect one of the RS485 ports to a 232/485 modem to my desktop 
computer I can send data to the gw2201 board from the PC.
But I can't get the gw2201 to send to the PC, ie the transmitter does 
not get enabled.

ttyS4 is the first RS485 port, ttyS8 is the first RS232 port.

For a test setup I have ttyS6 and ttyS7 connected to each other, 
termination is enabled on both ports
Also ttyS8 och ttyS9 is connected with a nullmodem cable.

Sending between the S8 och S9 works just fine both ways, but what do I 
need to do to get it working with the RS485 ports??

Best regards, Johan Winäs