Sudhir Shrestha

Accesing Serial Port in MPC8248 Evaluation System using Code Warrior IDE 5.7.0(EPPC Linux 2.6)

Discussion created by Sudhir Shrestha on Nov 5, 2007
Latest reply on Nov 5, 2007 by Thierry Giraud

System detail: MPC8248 evaluation system with "EPPC Linux 2.6 Code Warrior  IDE" (Code Warrior IDE 5.7.0).
I need to take data input from one of the serial ports. When I "dmesg" in the evaluation system it shows three serial ports "ttyS0, ttyS1, and ttyS2" (actually the system has only two serial ports!). when I try to open "/dev/ttyS0" (or 1 or 2), it says "No such file or directory".  However I can open and write "/dev/tts/0" , "/dev/tts/1", and "/dev/tts/2", but when I try to read the serial port connected to loopback connector, I get "EAGAIN ERROR". I would appreciate any help on this.