文档链接：

sim7600ce拨号上网:

https://blog.csdn.net/qq_26600237/article/details/80009171

SIM7600CE 4G HAT

http://www.waveshare.net/wiki/SIM7600CE_4G_HAT

4G模块SIMCOM7100 LTE在ARM Linux下使用PPPD上网:

https://blog.csdn.net/sy373466062/article/details/51474346

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参照《SIM7500_SIM7600 Linux NDIS 驱动调试 V2.00》文档修改驱动程序：

1、修改完成后上电启动内核会有如下打印：

<6>sunxi_emac Using MAC from SID:

02:22:ca:ff:93:84<6>sunxi_emac sunxi_emac.0: eth0: link up,

100Mbps, full-duplex, lpa 0x45E1

OK

<6>option 1-1:1.0: GSM modem (1-port) converter

detected

<6>usb 1-1: GSM modem (1-port) converter now attached to

ttyUSB0

<6>option 1-1:1.1: GSM modem (1-port) converter

detected

<6>usb 1-1: GSM modem (1-port) converter now attached to

ttyUSB1

<6>option 1-1:1.2: GSM modem (1-port) converter

detected

<6>usb 1-1: GSM modem (1-port) converter now attached to

ttyUSB2

<6>option 1-1:1.3: GSM modem (1-port) converter

detected

<6>usb 1-1: GSM modem (1-port) converter now attached to

ttyUSB3

<6>option 1-1:1.4: GSM modem (1-port) converter

detected

<6>usb 1-1: GSM modem (1-port) converter now attached to

ttyUSB4

# ls /dev/ttyU*

/dev/ttyUSB0  /dev/ttyUSB1

/dev/ttyUSB2  /dev/ttyUSB3

/dev/ttyUSB4

用网络登陆上机器，使用如下指令打开串口：

picocom -b 115200 /dev/ttyUSB3

此时即可使用AT指令测试模块：

AT

OK

AT+CPIN?

+CPIN: READY

OK

AT+CGREG?

+CGREG: 0,1

OK

AT+CGREG?

+CGREG: 0,1

OK

AT+CIMI

460090515808075

OK

AT+CGMI

SIMCOM INCORPORATED

OK

AT+CGMM

SIMCOM_SIM7600CE

OK

2、使能CONFIG_USBNET

ifconfig wwan0 up

ifconfig

echo "AT\$QCRMCALL=1,1" > /dev/ttyUSB3

或者：

echo "AT\$QCRMCALL=1,1" > /dev/ttyUSB2

(如果出现”udhcpc: sending

discover“，可以尝试等一会，等待模块准备好再udhcpc或者用ttyUSB2)

udhcpc -i wwan0

输出：

udhcpc: started, v1.27.2

udhcpc: sending discover

packetv4 coming ,,,

udhcpc: sending select for 10.110.181.188

packetv4 coming ,,,

udhcpc: lease of 10.110.181.188 obtained, lease time

7200

deleting routers

adding dns 221.6.4.66

adding dns 58.240.57.33

route del default dev wwan0

route add default dev wwan0

# ping  www.baidu.com

packetv4 coming ,,,

PING www.baidu.com (103.235.46.39): 56 data bytes

packetv4 coming ,,,

64 bytes from 103.235.46.39: seq=0 ttl=47 time=286.367

ms

packetv4 coming ,,,

64 bytes from 103.235.46.39: seq=1 ttl=47 time=1479.563

ms

packetv4 coming ,,,

64 bytes from 103.235.46.39: seq=2 ttl=47 time=508.030

ms