操作步骤
1、生成ttyUSB节点
QT_6818\kernel\drivers\usb\serial option.c
static const struct usb_device_id option_ids[] = {
//added by rpdzkj ivy for 3G 2015.11.6
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{ USB_DEVICE(0x05C6, 0x9090) }, //for UC15
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{ USB_DEVICE(0x05C6, 0x9003) }, //for UC20
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{ USB_DEVICE(0x05C6, 0x9215) }, //for EC20
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{ USB_DEVICE(0x2c7c, 0x0125) }, //for EC20 new version
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增加EC20的ID
编译烧写后会生成ttyUSB*
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2、添加拨号脚
把附件里的wcdma-EC20放到U盘，接到开发板上
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3、down掉以太网，以太网静态IP设置在开机使能，会影响4G网络节点使用，所以要down掉
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4、拨号
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提示信息如下
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[[email protected]]# abort on (NO CARRIER)
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abort on (ERROR)
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abort on (NO DIALTONE)
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abort on (BUSY)
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abort on (NO ANSWER)
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send (AT^M)
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expect (OK)
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AT^M^M
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OK
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-- got it
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send (ATZ^M)
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expect (OK)
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^M
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ATZ^M^M
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OK
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-- got it
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send (AT+CGDCONT=1,\"IP\",\"3gnet\",,0,0^M)
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expect (OK)
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^M
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AT+CGDCONT=1,"IP","3gnet",,0,0^M^M
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OK
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-- got it
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send (AT+CFUN=1^M)
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expect (OK)
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^M
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AT+CFUN=1^M^M
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OK
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-- got it
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send (ATDT*99#^M)
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expect (CONNECT)
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^M
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ATDT*99#^M^M
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CONNECT
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-- got it
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send (^M)
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Serial connection established.
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Using interface ppp0
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Connect: ppp0 <--> /dev/ttyUSB3
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CHAP authentication succeeded
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CHAP authentication succeeded
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Could not determine remote IP address: defaulting to 10.64.64.64
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local IP address 100.107.64.108
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remote IP address 10.64.64.64
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primary DNS address 202.96.128.86
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secondary DNS address 202.96.134.133
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5、查看 ppp0
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[[email protected]]# ifconfig
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lo Link encap:Local Loopback
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inet addr:127.0.0.1 Mask:255.0.0.0
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inet6 addr: ::1/128 Scope:Host
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UP LOOPBACK RUNNING MTU:16436 Metric:1
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RX packets:0 errors:0 dropped:0 overruns:0 frame:0
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TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
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collisions:0 txqueuelen:0
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RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
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ppp0 Link encap:Point-to-Point Protocol
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inet addr:100.107.64.108 P-t-P:10.64.64.64 Mask:255.255.255.255
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UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1
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RX packets:4 errors:0 dropped:0 overruns:0 frame:0
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TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
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collisions:0 txqueuelen:3
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RX bytes:52 (52.0 B) TX bytes:58 (58.0 B)
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[[email protected]]#
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6、上网测试
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