Hello all,

I have a problem with receiving data from Tuner. I tried use command match(), and receive().When I use

extenderSerial.bitrate = baudrate;
extenderSerial.databits = 8;
extenderSerial.parity = 0; // None
extenderSerial.stopbits = 1;

s = extenderSerial.match(command,"\r\n",1000);

return s;

OR

extenderSerial.bitrate = baudrate;
extenderSerial.databits = 8;
extenderSerial.parity = 0; // None
extenderSerial.stopbits = 1;

s = extenderSerial.receive(command,10,1000);
return s;

type station in Tuner is changed but I can't receive data from Tuner which describe frequenci or RDS. In variable s is nothing(I try command System.print("Variable: " s); after
s = extenderSerial.receive(command,10,1000); ). I don't know why. When I set Timeout 10000 it's do not wait for data because a used System.print("extenderSerial.receive") and System.print("after command extenderSerial.receive or match") and this two sentences wrote in equal time.

A don't know what can I do?
Thaks for help

What is the model number of your tuner?

Note that some devices use pins 7&8 on the RS-232. The RFX9600 does not support these pins, but there are usually work arounds.

Some RS-232 devices need more setup. You may need to send a special command to the tuner before it will start sending "reports" after something has changed. This change may have been ordered over the RS-232 or from the unit's front panel.

Tuner don't use pins 7&8. Do RFX9600 has any switch where can a chose the mode of comunication through the RS-232 because Tuner receive commands but nothing transmit back.

What model is the tuner? There are many 232 devices that do not have 2 way comms.. without the model number of your tuner it is difficult to offer any advice.

If it's a Denon receiver, don't use \r\n in the match, only use \r. We are all flying blind here as we don't know what protocol the device to which you are talking speaks. COME ON, help us out.

There are no settings. If your tuner requires CTS or other pins to be brought high/low, you may need to make a custom cable. RFX 9600, to my knowledge supports only pins 2,3,5. There is no HARDWARE flow control available.

Tuner is special but communication is good to Tuner because I change station.But when I write

var respone = extenderSerial.receive(command,10,1000);
System.print(respone);

I have blank line but station is change. I don't know where I make a mistake.

I upgrade firmware in RFX9600 and then communication is OK!:)

Thank you for all advise.

Did you try connecting your pc to the tuner and using terminal software to prove the command/response? This would be a good starting point. (odd thing- cable fault?)

Denon should reply within 200ms so you could also cut the timeout delay to 300ms,
and the reply should be same form as the command, but we need the RS232 protocol info for accurate advice.