一.使用QAndroidLog 抓日志
adb push D:\CustomerDemand\4G模块\EC600S-CN\Quectel_Android_RIL_Driver_V3.3.39_master_beta\tools\armeabi-v7a\QAndroidLog system/bin adb shell chmod 755 system/bin/QAndroidLog mkdir -p data/quectel_debug_log adb pull data/quectel_debug_log C:\Users\Administrator\Desktop\ECS600S_quectel_debug_log
二.端口、查看 网络
2.1.USB转串口终端，接USB转串口线可用此端口设备
在/dev/目录下会出现如下设备节点
2.2.查看网络
2.3.dmesg
<3>[ 2.440056] mali: exports duplicate symbol mali_dev_pause (owned by kernel) <6>[ 2.523173] usb 1-1.2: new high-speed USB device number 5 using rockchip_ehci_host <6>[ 2.632019] usb 1-1.2: New USB device found, idVendor=2c7c, idProduct=6002 <6>[ 2.632037] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3 <6>[ 2.632050] usb 1-1.2: Product: Android <6>[ 2.632060] usb 1-1.2: Manufacturer: Android <6>[ 2.632071] usb 1-1.2: SerialNumber: 0000 <6>[ 2.633862] cdc_ether 1-1.2:1.0 usb0: register \'cdc_ether\' at usb-101c0000.usb-1.2, CDC Ethernet Device, ae:0c:29:a3:9b:6d <6>[ 2.634779] option 1-1.2:1.2: GSM_MODEM converter detected <4>[ 2.634808] jessica serial->type->description = GSM_MODEM <6>[ 2.635149] usb 1-1.2: GSM_MODEM converter now attached to ttyUSB0 <6>[ 2.635868] option 1-1.2:1.3: GSM_MODEM converter detected <4>[ 2.635899] jessica serial->type->description = GSM_MODEM <6>[ 2.636206] usb 1-1.2: GSM_MODEM converter now attached to ttyUSB1 <3>[ 3.283730] rk29_ipp: version magic \'3.0.8+ SMP preempt mod_unload ARMv7 \' should be \'3.10.0 SMP preempt mod_unload ARMv7 p2v8 \' <3>[ 3.284600] rk29_ipp: version magic \'3.0.36+ SMP preempt mod_unload ARMv7 \' should be \'3.10.0 SMP preempt mod_unload ARMv7 p2v8 \' <3>[ 3.285426] rk29_ipp: version magic \'3.0.101+ SMP preempt mod_unload ARMv7 \' should be \'3.10.0 SMP preempt mod_unload ARMv7 p2v8 \' <6>[ 3.286116] zram: Cannot change disksize for initialized device <11>[ 3.297689] fs_mgr: swapon failed for /dev/block/zram0 <4>[ 3.313074] force_usb_mode_store 0->1 <4>[ 3.412523] Using Buffer DMA mode <4>[ 3.412533] Periodic Transfer Interrupt Enhancement - disabled <4>[ 3.412543] Multiprocessor Interrupt Enhancement - disabled <4>[ 3.412553] OTG VER PARAM: 0, OTG VER FLAG: 0
三.驱动
3.1.usb-serial-option, USB转串口驱动，生成/dev/ttyUSB0~2. 总共3个串口，分别是DM、AT、PPP.
需要使能的内核选项如下
USB_SERIAL=y
USB_SERIAL_WWAN=y
USB_SERIAL_OPTION=y
3.2.USB网卡驱动，模块可通过AT配置成rndis或者ecm，默认是ecm。
需要使能的内核选项如下
USB_USBNET=y
USB_NET_CDCETHER=y #用ECM 使能此项
USB_NET_RNDIS_HOST=y #用RNDIS 使能此项
3.3.usb-serial-option usb串口驱动与公司其他高通平台模块的兼容
UC200&EC200和其他高通模块，都是用usb-serial-option驱动，但是USB interface的顺序不同. 所以如果客户之前移植过EC20/EC25的代码，会导致UC200&EC200的PPP口识别不到。所以建议客户先还原drivers/usb/serial/option.c的修改，重新按照 EC200_UC200_usb_serial_option.patch移植。这个修改方法同时UC200&EC200和其他高通平台模块
SSS EC25
四.PPP 改 ECM