Joined: 12 Oct 2009
|Posted: Mon Oct 12, 2009 1:33 pm Post subject: RS-232 or TTL levels in Turbo Motion
I'm trying to figure out a way to interface a SIM card with a custom controller box (a small embedded computer) that has a TTL-level UART (serial port). As far as I understand, the TM2 has an RS-232 port that could be used for this. But I'm not sure if the voltage levels are the same.
RS-232 could be +12V/-12V and in this case I will fry our 3.3V TTL-level serial. Does anyone know what voltage levels are used on the RS-232 port of the TM/TM2?
Chief Technology Officer
Cayenne Graphics SRL