I'm deveoloping a project with a raspberry Pi that involves serial communication. In order to properly handle voltage levels, I used a max3232 converter between the raspberry and the external device connectors.
Max3232 has two transmit lines and two receive lines. A pair of them is used by Tx and Rx (transfer and read the data buffer), whereas the other pair are labeled by default as the RTS/CTS flow control lines, as you can see in the picture.
My problem is related with this second pair: I would need a DTR line instead of the RTS. My first thought was to simply connect the RTS line to the DTR pin on the external device.
Is this idea valid?. Flow control pins are just the same with different names or are they governed by different schemes?