FT232 and handshaking.

[davidbue]

Hi everybody!

I've just migrated from using the MAX232/ST232 for serial communication to the FT232R chip from FTDI.

So far I haven't had any problems using the FTDI chip, but one thing puzzles me.

When I used the MAX232 serial interface I always used:

Bitrate:9600
Data bits:8
Parity:none
Stop bits:1
Flow control:None

Now, when I use the FT232R chip I have to use this instead:

Bitrate:9600
Data bits:8
Parity:none
Stop bits:1
Flow control:Xon/Xoff

Sooo.... what I don't understand is why I now have to use flow control. The code I use in the CCS compiler is the same as with the Max232 interface. Is it something I have to set up on the FT232R chip using the programmer supplied by FTDI?

Hope that one of you can explain it to me.

Thank you, thank you!

David

[PCM programmer]

Look at section 4.3 of this FTDI appnote:
http://www.ftdichip.com/Documents/AppNotes/AN232B-04_DataLatencyFlow.pdf

[davidbue]

Hi PCM programmer.

As always you have the answer. You're a great guy to have hanging around on the forum.

Thank you.