ME3630 开机4G模块启动问题

qwqwqw2

开机的时候
APP已经启动了
但是4G模块没启动，导致找不到4G模块

如果等4G模块启动完，马上连接 ttyUSB1
就会发生
usb 2-1.2: USB disconnect, device number 4
option1 ttyUSB1: usb_wwan_indat_callback: resubmit read urb failed. (-19)
option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0
option1 ttyUSB1: usb_wwan_indat_callback: resubmit read urb failed. (-19)
option 2-1.2:1.0: device disconnected
option1 ttyUSB1: usb_wwan_indat_callback: resubmit read urb failed. (-19)
option1 ttyUSB1: usb_wwan_indat_callback: resubmit read urb failed. (-19)
option1 ttyUSB1: GSM modem (1-port) converter now disconnected from ttyUSB1
option 2-1.2:1.1: device disconnected
option1 ttyUSB2: GSM modem (1-port) converter now disconnected from ttyUSB2
option 2-1.2:1.2: device disconnected
cdc_ether 2-1.2:1.3 usb0: unregister 'cdc_ether' usb-ci_hdrc.1-1.2, CDC Ethernet Device
usb 2-1.2: new high-speed USB device number 5 using ci_hdrc
idVendor=19d2, idProduct=1476, bInterfaceNumber =0
option 2-1.2:1.0: GSM modem (1-port) converter detected
usb 2-1.2: GSM modem (1-port) converter now attached to ttyUSB0
idVendor=19d2, idProduct=1476, bInterfaceNumber =1
option 2-1.2:1.1: GSM modem (1-port) converter detected
usb 2-1.2: GSM modem (1-port) converter now attached to ttyUSB2
idVendor=19d2, idProduct=1476, bInterfaceNumber =2
option 2-1.2:1.2: GSM modem (1-port) converter detected
usb 2-1.2: GSM modem (1-port) converter now attached to ttyUSB3
cdc_ether 2-1.2:1.3 usb0: register 'cdc_ether' at usb-ci_hdrc.1-1.2, CDC Ethernet Device, 2e:2b:54:9b:5e:c8

上面打印信息，不知道为什么连接了4G模块的ttyUSB1后，模块好像重启了一样，变成了 ttyUSB0 ttyUSB2 ttyUSB3

flyzeng

这种是业务逻辑可以调整的吧，简单就可以加个延时，等驱动起来后，再发数据。还得看你的APP是做什么功能。

jkl49142311

老哥，你的开机启动问题解决了吗，我用的udev规则，等udev检测到ttyUSB之后，就马上执行脚本连接。但是我发现使用udev太慢了，情况好得话，3分钟连上网，有时候甚至都连不上......