I am currently porting Cinterion PH8 GSM Mobile Broadband Module on SabreSD Linux Kernel 3.0.35 Ubuntu 11.10。
I made the follow changes to Kernel Configs:
+CONFIG_MD=y
+CONFIG_PPP=y
+CONFIG_PPP_MULTILINK=y
+CONFIG_PPP_FILTER=y
+CONFIG_PPP_ASYNC=y
+CONFIG_PPP_SYNC_TTY=y
+CONFIG_PPP_DEFLATE=y
+CONFIG_PPP_BSDCOMP=y
+CONFIG_PPP_MPPE=y
+CONFIG_PPPOE=y
+CONFIG_USB_SERIAL=y
+CONFIG_USB_SERIAL_GENERIC=y
+CONFIG_USB_SERIAL_OPTION=y
-CONFIG_CRC_CCITT=m
and then found the device node at /dev/ttyUSB0 ~ 4.
But after echo AT command to /dev/ttyUSB3: "echo -ne "AT+COPS?" > /dev/ttyUSB3", I did not see any response except "AT+COPS?".
I used command "lsusb" to check the device info, but I can only see the VID and PID without any information of it.
What else can I do now?
