华为 3G上网卡 E1750 在DM6446上移植的问题
 
root@192.168.1.2:/opt/3g# lsusb
Bus 001 Device 002: ID 12d1:1446  
Bus 001 Device 001: ID 04d6:0000 Mentor Graphics 
root@192.168.1.2:/opt/3g# source init.sh 
root@192.168.1.2:/opt/3g# ./usb_modeswitch 

Looking for target devices ...
 No devices in target mode or class found
Looking for default devices ...
 Found devices in default mode or class (1)
Accessing device 033 on bus 001 ...
Using endpoints 0x01 (out) and 0x81 (in)
Inquiring device details; driver will be detached ...
Looking for active driver ...
 OK, driver found ("usb-storage")
 OK, driver "usb-storage" detached

SCSI inquiry data (for identification)
-------------------------
  Vendor String: HUAWEI  
  Model String: Mass Storage  
Revision String: 2.31
-------------------------

USB description data (for identification)
-------------------------
Manuusb 1-1: usbfs: process 1168 (usb_modeswitch) did not claim interface 0 before use
facturer: HUAWEIusb 1-1: USB disconnect, address 2
 Technology
  Product: HUAWEI Mobile
  Serial No.: not provided
-------------------------
Setting up communication with interface 0 ...
Using endpoint 0x01 for message sending ...
Trying to send message 1 to endpoint 0x01 ...
 OK, message successfully sent
 Device is gone, skipping any further commands
-> Run lsusb to note any changes. Bye.

root@192.168.1.2:/opt/3g# usb 1-1: new high speed USB device using musb_hdrc and address 3
pl2303 1-1:1.0: PL-2303 converter detected
usb 1-1: PL-2303 converter now attached to ttyUSB0
pl2303 1-1:1.1: PL-2303 converter detected
usb 1-1: PL-2303 converter now attached to ttyUSB1
pl2303 1-1:1.2: PL-2303 converter detected
usb 1-1: PL-2303 converter now attached to ttyUSB2
scsi2 : SCSI emulation for USB Mass Storage devices
scsi3 : SCSI emulation for USB Mass Storage devices
  Vendor: HUAWEI Model: Mass Storage Rev: 2.31
  Type: CD-ROM ANSI SCSI revision: 02
  Vendor: HUAWEI Model: SD Storage Rev: 2.31
  Type: Direct-Access ANSI SCSI revision: 02
Attached scsi removable disk sda at scsi3, channel 0, id 0, lun 0

root@192.168.1.2:/opt/3g# echo ATZ>/dev/ttyUSB0
usb 1-1: bash timed out on ep0out
root@192.168.1.2:/opt/3g# cat /dev/ttyUSB0
usb 1-1: cat timed out on ep0out



OK



root@192.168.1.2:/opt/3g# pppd call wcdma &
[1] 1479
root@192.168.1.2:/opt/3g# usb 1-1: pppd timed out on ep0out
usb 1-1: pppd timed out on ep0out
abort on (NO CARRIER)
abort on (ERROR)
abort on (NO DIALTONE)
abort on (BUSY)
abort on (NO ANSWER)
send (^MAT^M)
expect (OK)
AT^M^M
OK
 -- got it

send (^MATZ^M)
expect (OK)
^M
ATZ^M^M
OK
 -- got it

send (^MAT+CGDCONT=1,"IP","3gnet",,0,0^M)
expect (OK)
^M
AT+CGDCONT=1,"IP","3gnet",,0,0^M^M
OK
 -- got it

send (ATDT*99#^M)
expect (CONNECT)
^M
ATDT*99#^M^M
CONNECT
 -- got it

send (\d)
Serial connection established.
usb 1-1: pppd timed out on ep0out
Using interface ppp0
Connect: ppp0 <--> /dev/ttyUSB0
PAP authentication succeeded
Could not determine remote IP address: defaulting to 10.64.64.64
not replacing default route to eth0 [192.168.1.3]
Cannot determine ethernet address for proxy ARP
local IP address 172.24.192.54
remote IP address 10.64.64.6