Multitech MT9234ZPX-UPCI User's Guide download pdf (Page 13)

MultiModem ZPX UPCI/PCIe User Guide 13

Chapter 4 – Linux Installation

Linux uses a native driver contained in the kernel with MultiModem ZPX modems.

Verifying that Linux Detected the Modem

When using your modem with Linux kernel 2.6.xx, install the hardware and then verify if Linux can detect it. To

verify that the Linux detected the modem:

1. Logon to the system as root.

2. Send uname -a to check with kernel version is running. Linux returns a response similar to:

[root@armadillo ~]# uname -a

Linux armadillo.net 2.6.18-8.el5 #1 SMP Thu Mar 15 19:57:35 EDT 2007 i686 i686 i386

GNU/Linux

This example shows a system running kernel 2.6.18-8.el5.

Identifying Ports

When Linux detects the modem, it assigns two new ports to the system. Only the first COM port is used to access

the modem. If you use the second port, the modem will not respond to AT commands.

To see how many ports the system detected on boot

1. Send dmesg |grep -i tty. Linux returns a response similar to:

[root@armadillo ~]# dmesg |grep -i tty

serial8250: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A

00:0f: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A

0000:03:00.0: ttyS0 at MMIO 0xcdeffc00 (irq = 169) is a 16550A

0000:03:00.0: ttyS2 at MMIO 0xcdeffe00 (irq = 169) is a 16550A

Bluetooth: RFCOMM TTY layer initialized

Linux labels the ports assigned to your modem as follows. Note that the IRQ and the I/O address might be

different in your system.

0000:03:00.0: ttyS0 at MMIO 0xcdeffc00 (irq = 169) is a 16550A

0000:03:00.0: ttyS2 at MMIO 0xcdeffe00 (irq = 169) is a 16550A

2. Record the port label information.

Verifying that the Modem Works

To confirm if the modem works, use the Linux minicom terminal emulation

1. Enter minicom -s to bring the minicom into configuration mode. The returned response will be similar to:

[root@armadillo ~]# minicom -s

minicom: WARNING: configuration file not found, using defaults

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Multitech MT9234ZPX-UPCI User's Guide Page 13