目前共有34篇帖子。
 |
root@rk3308b-buildroot:/root# microcom /dev/ttyUSB1
AT+QIOPEN=1,0,"TCP","154.222.17.158",80,0,2 CONNECT HTTP/1.1 400 Bad Request Server: nginx/1.27.4 Date: Tue, 23 Dec 2025 09:58:37 GMT Content-Type: text/html Content-Length: 157 Connection: close <html> <head><title>400 Bad Request</title></head> <body> <center><h1>400 Bad Request</h1></center> <hr><center>nginx/1.27.4</center> </body> </html> NO CARRIER root@rk3308b-buildroot:/root# |
|
目前，板子开机后，不需要insmod GobiNet.ko，就有usb0网络接口。
GobiNet.ko并没有起到作用，insmod GobiNet.ko也没有匹配到任何设备。 EC200A这个USB设备上面有0-4这五个接口（interface），五个接口的名字分别为： root@rk3308b-buildroot:/# cat /sys/bus/usb/devices/2-1/2-1:1.0/interface Mobile RNDIS Network Adapter root@rk3308b-buildroot:/# cat /sys/bus/usb/devices/2-1/2-1:1.1/interface Mobile RNDIS Network Adapter root@rk3308b-buildroot:/# cat /sys/bus/usb/devices/2-1/2-1:1.2/interface Mobile Diag Interface root@rk3308b-buildroot:/# cat /sys/bus/usb/devices/2-1/2-1:1.3/interface Mobile AT Interface root@rk3308b-buildroot:/# cat /sys/bus/usb/devices/2-1/2-1:1.4/interface Mobile MODEM Interface root@rk3308b-buildroot:/# 板子开机后，在没有插入任何模块的情况下，接口0和1匹配的是linux内核自带的Luckfox_Nova_SDK_250430/kernel/drivers/net/usb/rndis_host.c驱动，接口2-4没有匹配驱动。usb0网络接口就是由内核自带的rndis_host.c驱动产生的。 root@rk3308b-buildroot:/# lsmod Module Size Used by Tainted: G aic8800_bsp 73728 0 root@rk3308b-buildroot:/# ls -l /sys/bus/usb/devices/2-1/2-1:1.0/driver lrwxrwxrwx 1 root root 0 Jan 1 00:00 /sys/bus/usb/devices/2-1/2-1:1.0/driver -> ../../../../../../bus/usb/drivers/rndis_host root@rk3308b-buildroot:/# ls -l /sys/bus/usb/devices/2-1/2-1:1.1/driver lrwxrwxrwx 1 root root 0 Jan 1 00:01 /sys/bus/usb/devices/2-1/2-1:1.1/driver -> ../../../../../../bus/usb/drivers/rndis_host root@rk3308b-buildroot:/# ls -l /sys/bus/usb/devices/2-1/2-1:1.2/driver ls: cannot access '/sys/bus/usb/devices/2-1/2-1:1.2/driver': No such file or directory root@rk3308b-buildroot:/# ls -l /sys/bus/usb/devices/2-1/2-1:1.3/driver ls: cannot access '/sys/bus/usb/devices/2-1/2-1:1.3/driver': No such file or directory root@rk3308b-buildroot:/# ls -l /sys/bus/usb/devices/2-1/2-1:1.4/driver ls: cannot access '/sys/bus/usb/devices/2-1/2-1:1.4/driver': No such file or directory root@rk3308b-buildroot:/# 如果想要让GobiNet.ko起作用，就需要修改Quectel_LTE5G_Linux_USB_Driver_V1.0-5/Quectel_LinuxAndroid_GobiNet_Driver_V1.6/GobiUSBNet.c文件，找到static const struct usb_device_id QuecGobiVIDPIDTable，在里面加上GOBI_FIXED_INTF( 0x2c7c, 0x6005 )。 因为static struct driver_info GobiNetInfo里面第1996行data=(1 << 4)，而在第755-761行有下面的代码 // Verify correct interface (4 for UC20) if ( !test_bit(pIntf->cur_altsetting->desc.bInterfaceNumber, &pDev->driver_info->data)) { DBG( "invalid interface %d\n", pIntf->cur_altsetting->desc.bInterfaceNumber ); return -ENODEV; } 所以最后GobiUSBNet.ko会匹配上接口4。 在内核外编译GobiNet驱动代码，并将GobiNet.ko上传到板子上。 adb push "\\OCT1158-UBUNTU\oct1158\Documents\Code\C\Quectel_LTE5G_Linux_USB_Driver_V1.0-5\Quectel_LinuxAndroid_GobiNet_Driver_V1.6\GobiNet.ko" /root 在板子上插入GobiNet.ko模块，可以看到又出现了新的usb1接口，这才是GobiUSBNet.ko产生的网络接口。 root@rk3308b-buildroot:/# cd /root root@rk3308b-buildroot:/root# insmod GobiNet.ko [ 392.129124] GobiNet: Quectel_Linux&Android_GobiNet_Driver_V1.6 [ 392.132848] GobiNet 2-1:1.4 usb1: register 'GobiNet' at usb-ff440000.usb-1, GobiNet Ethernet Device, 2e:88:bc:88:ef:75 [ 392.134713] creating qcqmi1 [ 392.136384] usbcore: registered new interface driver GobiNet root@rk3308b-buildroot:/root# [ 393.192237] IPv6: ADDRCONF(NETDEV_CHANGE): usb1: link becomes ready root@rk3308b-buildroot:/root# ifconfig eth0 Link encap:Ethernet HWaddr F2:2E:FE:02:6E:60 UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) Interrupt:39 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:40 errors:0 dropped:0 overruns:0 frame:0 TX packets:40 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:2848 (2.7 KiB) TX bytes:2848 (2.7 KiB) usb0 Link encap:Ethernet HWaddr AE:53:03:FF:64:0C inet addr:192.168.43.100 Bcast:192.168.43.255 Mask:255.25e:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:61 errors:0 dropped:0 overruns:0 frame:0 TX packets:213 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:2880 (2.8 KiB) TX bytes:24818 (24.2 KiB) usb1 Link e:863:33f6/64 Scope:Link UP BROADCAST RUNNING NOARP MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:4 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:768 (768.0 B) root@rk3308b-buildroot:/root# 可以看到，GobiNet.ko确实匹配的是4号接口（Mobile MODEM Interface），产生了usb1网络接口。 linux内核自带的Luckfox_Nova_SDK_250430/kernel/drivers/net/usb/rndis_host.c驱动依然还是匹配接口0-1（Mobile RNDIS Network Adapter），产生的是usb0网络接口。 root@rk3308b-buildroot:/root# lsmod Module Size Used by Tainted: G GobiNet 53248 0 aic8800_bsp 73728 0 root@rk3308b-buildroot:/root# ls -l /sys/bus/usb/devices/2-1/2-1:1.0/driver lrwxrwxrwx 1 root root 0 Jan 1 00:00 /sys/bus/usb/devices/2-1/2-1:1.0/driver -> ../../../../../../bus/usb/drivers/rndis_host root@rk3308b-buildroot:/root# ls -l /sys/bus/usb/devices/2-1/2-1:1.1/driver lrwxrwxrwx 1 root root 0 Jan 1 00:01 /sys/bus/usb/devices/2-1/2-1:1.1/driver -> ../../../../../../bus/usb/drivers/rndis_host root@rk3308b-buildroot:/root# ls -l /sys/bus/usb/devices/2-1/2-1:1.2/driver ls: cannot access '/sys/bus/usb/devices/2-1/2-1:1.2/driver': No such file or directory root@rk3308b-buildroot:/root# ls -l /sys/bus/usb/devices/2-1/2-1:1.3/driver ls: cannot access '/sys/bus/usb/devices/2-1/2-1:1.3/driver': No such file or directory root@rk3308b-buildroot:/root# ls -l /sys/bus/usb/devices/2-1/2-1:1.4/driver lrwxrwxrwx 1 root root 0 Jan 1 00:06 /sys/bus/usb/devices/2-1/2-1:1.4/driver -> ../../../../../../bus/usb/drivers/GobiNet root@rk3308b-buildroot:/root# 巨大八爪鱼：此时，如果再插入usb_wwan.ko和option.ko这两个模块，那么option.ko会匹配上接口2和接口3，产生/dev/ttyUSB0和/dev/ttyUSB1这两个串口设备。现在接口0-4这五个接口都匹配上驱动了。
root@rk3308b-buildroot:/# cd /root root@rk3308b-buildroot:/root# ls GobiNet.ko option.ko usb_wwan.ko root@rk3308b-buildroot:/root# insmod usb_wwan.ko root@rk3308b-buildroot:/root# insmod option.ko [ 1152.021683] usbcore: registered new interface driver option [ 1152.021882] usbserial: USB Serial support registered for GSM modem (1-port) [ 1152.022408] option 2-1:1.2: GSM modem (1-port) converter detected [ 1152.023552] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB0 [ 1152.023994] option 2-1:1.3: GSM modem (1-port) converter detected [ 1152.025428] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB1 root@rk3308b-buildroot:/root# ls -l /sys/bus/usb/devices/2-1/2-1:1.0/driver lrwxrwxrwx 1 root root 0 Jan 1 00:00 /sys/bus/usb/devices/2-1/2-1:1.0/driver -> ../../../../../../bus/usb/drivers/rndis_host root@rk3308b-buildroot:/root# ls -l /sys/bus/usb/devices/2-1/2-1:1.1/driver lrwxrwxrwx 1 root root 0 Jan 1 00:01 /sys/bus/usb/devices/2-1/2-1:1.1/driver -> ../../../../../../bus/usb/drivers/rndis_host root@rk3308b-buildroot:/root# ls -l /sys/bus/usb/devices/2-1/2-1:1.2/driver lrwxrwxrwx 1 root root 0 Jan 1 00:19 /sys/bus/usb/devices/2-1/2-1:1.2/driver -> ../../../../../../bus/usb/drivers/option root@rk3308b-buildroot:/root# ls -l /sys/bus/usb/devices/2-1/2-1:1.3/driver lrwxrwxrwx 1 root root 0 Jan 1 00:19 /sys/bus/usb/devices/2-1/2-1:1.3/driver -> ../../../../../../bus/usb/drivers/option root@rk3308b-buildroot:/root# ls -l /sys/bus/usb/devices/2-1/2-1:1.4/driver lrwxrwxrwx 1 root root 0 Jan 1 00:06 /sys/bus/usb/devices/2-1/2-1:1.4/driver -> ../../../../../../bus/usb/drivers/GobiNet root@rk3308b-buildroot:/root# ls /dev/ttyUSB* /dev/ttyUSB0 /dev/ttyUSB1 root@rk3308b-buildroot:/root#  巨大八爪鱼：勘误：GobiUSBNet.ko写错了，全部纠正为GobiNet.ko。
[查看详情]
|
|
Linux网络调通了，最终只用到了两个模块：usb_wwan.ko和option.ko，其他三个ko都没有用。
root@rk3308b-buildroot:/root# microcom /dev/ttyUSB1 AT+QPING=1,"www.baidu.com" OK +QPING: 0,"39.156.70.239",32,90,51 +QPING: 0,"39.156.70.239",32,25,51 +QPING: 0,"39.156.70.239",32,35,52 +QPING: 0,"39.156.70.239",32,25,52 +QPING: 0,4,4,0,0,90,43 root@rk3308b-buildroot:/root# AT指令能ping了之后，只需要再执行一下AT+QNETDEVCTL=1,1,1或者AT+QNETDEVCTL=3,1,1命令，linux系统里面就能联网了，可以直接ping通百度。 使用的网络接口是usb0，IP地址是192.168.43.100，用的是linux内核自带的rndis驱动（Luckfox_Nova_SDK_250430/kernel/drivers/net/usb/rndis_host.c）。 root@rk3308b-buildroot:/root# microcom /dev/ttyUSB1 AT+QNETDEVCTL? +QNETDEVCTL: 0,0,0,0 OK AT+QNETDEVCTL=1,1,1 OK +QNETDEVSTATUS: 1 AT+QNETDEVCTL? +QNETDEVCTL: 1,1,1,1 OK root@rk3308b-buildroot:/root# ping www.baidu.com PING www.baidu.com (39.156.70.46): 56 data bytes 64 bytes from 39.156.70.46: seq=0 ttl=52 time=33.113 ms 64 bytes from 39.156.70.46: seq=1 ttl=52 time=27.730 ms 64 bytes from 39.156.70.46: seq=2 ttl=53 time=37.989 ms 64 bytes from 39.156.70.46: seq=3 ttl=53 time=32.609 ms 64 bytes from 39.156.70.46: seq=4 ttl=53 time=32.178 ms 64 bytes from 39.156.70.46: seq=5 ttl=53 time=31.345 ms 64 bytes from 39.156.70.46: seq=6 ttl=53 time=41.470 ms ^C --- www.baidu.com ping statistics --- 7 packets transmitted, 7 packets received, 0% packet loss round-trip min/avg/max = 27.730/33.776/41.470 ms root@rk3308b-buildroot:/root# wget http://www.baidu.com Connecting to www.baidu.com (39.156.70.239:80) saving to 'index.html' index.html 100% |********************************| 2381 0:00:00 ETA 'index.html' saved root@rk3308b-buildroot:/root# microcom /dev/ttyUSB1 AT+QNETDEVCTL=3,1,1 OK AT+QNETDEVCTL? +QNETDEVCTL: 3,1,1,1 OK root@rk3308b-buildroot:/root# microcom /dev/ttyUSB1 AT+CFUN=1,1 OK [ 1201.487608] usb 2-1: USB disconnect, device number 3 [ 1201.490389] rndis_host 2-1:1.0 usb0: unregister 'rndis_host' usb-ff440000.usb-1, RNDIS device [ 1201.507772] option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0 [ 1201.509048] option 2-1:1.2: device disconnected [ 1201.517362] option1 ttyUSB1: GSM modem (1-port) converter now disconnected from ttyUSB1 root@rk3308b-buildroot:/root# [ 1201.517737] option 2-1:1.3: device disconnected [ 1202.048371] usb 2-1: new high-speed USB device number 4 using ehci-platform [ 1202.713526] usb 2-1: USB disconnect, device number 4 root@rk3308b-buildroot:/root# root@rk3308b-buildroot:/root# root@rk3308b-buildroot:/root# root@rk3308b-buildroot:/root# [ 1208.376369] usb 2-1: new high-speed USB device number 5 using ehci-platform [ 1208.513112] rndis_host 2-1:1.0 usb0: register 'rndis_host' at usb-ff440000.usb-1, RNDIS device, ba:4d:1f:e9:4e:d3 [ 1208.515916] option 2-1:1.2: GSM modem (1-port) converter detected [ 1208.517087] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB0 [ 1208.518942] option 2-1:1.3: GSM modem (1-port) converter detected [ 1208.520067] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB1 ping www.baidu.com ^C root@rk3308b-buildroot:/root# root@rk3308b-buildroot:/root# root@rk3308b-buildroot:/root# ping www.baidu.com PING www.baidu.com (39.156.70.46): 56 data bytes 64 bytes from 39.156.70.46: seq=0 ttl=52 time=88.901 ms 64 bytes from 39.156.70.46: seq=1 ttl=52 time=25.787 ms 64 bytes from 39.156.70.46: seq=2 ttl=52 time=25.553 ms ^C --- www.baidu.com ping statistics --- 3 packets transmitted, 3 packets received, 0% packet loss round-trip min/avg/max = 25.553/46.747/88.901 ms root@rk3308b-buildroot:/root# ping www.baidu.com PING www.baidu.com (39.156.70.46): 56 data bytes 64 bytes from 39.156.70.46: seq=0 ttl=52 time=30.364 ms 64 bytes from 39.156.70.46: seq=1 ttl=52 time=52.926 ms ^C --- www.baidu.com ping statistics --- 2 packets transmitted, 2 packets received, 0% packet loss round-trip min/avg/max = 30.364/41.645/52.926 ms root@rk3308b-buildroot:/root# lsmod Module Size Used by Tainted: G option 53248 0 usb_wwan 20480 1 option aic8800_bsp 73728 0 root@rk3308b-buildroot:/root# ifconfig eth0 Link encap:Ethernet HWaddr F2:2E:FE:02:6E:60 UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) Interrupt:39 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:37 errors:0 dropped:0 overruns:0 frame:0 TX packets:37 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:2667 (2.6 KiB) TX bytes:2667 (2.6 KiB) usb0 Link encap:Ethernet HWaddr BA:4D:1F:E9:4E:D3 inet addr:192.168.43.100 Bcast:192.168.43.255 Mask:255.255.255.0 inet6 addr: fe80::a6b4:18eb:6e73:ad76/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:65 errors:0 dropped:0 overruns:0 frame:0 TX packets:82 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:4584 (4.4 KiB) TX bytes:10818 (10.5 KiB) root@rk3308b-buildroot:/root# |
|
设置命令：AT+QNETDEVCTL=<connect_type>[,<CID>[,<URC_switch>]]
 |
|
开机后会自动联网同步网络时间，不需要安装ntpdate命令。 [ 4.743367] android_work: sent uevent USB_STATE=CONNECTED root@rk3308b-buildroot:/# root@rk3308b-buildroot:/# root@rk3308b-buildroot:/# [ 5.557636] aicbsp: aicbsp_set_subsys, fail to set AIC_BLUETOOTH power state to 1 Installing WiFi/BT module: aic8800_fdrv.ko [ 5.592239] aicbsp: aicbsp_set_subsys, subsys: AIC_WIFI, state to: 1 [ 5.592288] aicbsp: aicbsp_set_subsys, power state change to 1 dure to AIC_WIFI [ 5.592297] aicbsp: aicbsp_platform_power_on [ 5.592307] [WLAN_RFKILL]: rockchip_wifi_power: 0 [ 5.592318] [WLAN_RFKILL]: rockchip_wifi_power: toggle = false [ 5.592327] wifi power off root@rk3308b-buildroot:/# [ 5.694454] [WLAN_RFKILL]: rockchip_wifi_power: toggle = false [ 5.694525] [WLAN_RFKILL]: wifi shut off power [GPIO2-0] d[ 5.744615] [WLAN_RFKILL]: rockchip_wifi_power: 1 [ 5.744659] [WLAN_RFKILL]: rockchip_wifi_power: toggle = false [ 5.769864] android_work: sent uevent USB_STATE=DISCONNECTED [ 5.773624] dwc2 ff400000.usb: new device is high-speed [ 5.817631] dwc2 ff400000.usb: new device is high-speed [ 5.847153] [WLAN_RFKILL]: wifi turn on power [GPIO2-1] [ 5.851160] dwc2 ff400000.usb: new address 8 a[ 5.897283] mmc2:mmc host rescan start! [ 5.930836] mmc_host mmc2: Bus speed (slot 0) = 400000Hz (slot req 400000Hz, actual 400000HZ div = 0) [ 5.936411] android_work: did not send uevent (0 0 0000000000000000) [ 5.939684] dwc2 ff400000.usb: new device is high-speed [ 5.967330] mmc_host mmc2: Bus speed (slot 0) = 300000Hz (slot req 300000Hz, actual 300000HZ t[ 6.169063] android_work: sent uevent USB_STATE=CONNECTED [ 6.204484] android_work: sent uevent USB_STATE=CONFIGURED e Thu Jan 1 00:00:06 UTC 1970 root@rk3308b-buildroot:/# root@rk3308b-buildroot:/# root@rk3308b-buildroot:/# da[ 7.608452] usb 2-1: new high-speed USB device number 3 using ehci-platform t[ 7.746908] rndis_host 2-1:1.0 usb0: register 'rndis_host' at usb-ff440000.usb-1, RNDIS device, ee:34:85:5c:3e:79 e Thu Jan 1 00:00:07 UTC 1970 root@rk3308b-buildroot:/# [ 7.925783] aicbsp: aicbsp_set_subsys, fail to set AIC_WIFI power state to 1 [ 7.954840] aicbsp: aicbsp_set_subsys, subsys: AIC_WIFI, state to: 1 [ 7.954912] aicbsp: aicbsp_set_subsys, power state change to 1 dure to AIC_WIFI [ 7.954923] aicbsp: aicbsp_platform_power_on [ 7.954932] [WLAN_RFKILL]: rockchip_wifi_power: 0 [ 7.954943] [WLAN_RFKILL]: rockchip_wifi_power: toggle = false [ 7.954951] wifi power off [ 8.062485] [WLAN_RFKILL]: rockchip_wifi_power: toggle = false [ 8.062539] [WLAN_RFKILL]: wifi shut off power [GPIO2-0] [ 8.113032] [WLAN_RFKILL]: rockchip_wifi_power: 1 [ 8.113112] [WLAN_RFKILL]: rockchip_wifi_power: toggle = false root@rk3308b-buildroot:/# [ 8.222175] [WLAN_RFKILL]: wifi turn on power [GPIO2-1] [ 8.272294] mmc2:mmc host rescan start! root@rk3308b-buildroot:/# [ 8.305824] mmc_host mmc2: Bus speed (slot 0) = 400000Hz (slot req 400000Hz, actual 400000HZ div = 0) [ 8.341344] mmc_host mmc2: Bus speed (slot 0) = 300000Hz (slot req 300000Hz, actual 300000HZ div = 0) [ 8.378394] mmc_host mmc2: Bus speed (slot 0) = 200000Hz (slot req 200000Hz, actual 200000HZ div = 0) [ 8.418355] mmc_host mmc2: Bus speed (slot 0) = 100000Hz (slot req 100000Hz, actual 100000HZ div = 0) root@rk3308b-buildroot:/# root@rk3308b-buildroot:/# root@rk3308b-buildroot:/# root@rk3308b-buildroot:/# root@rk3308b-buildroot:/# darte sh: darte: command not found root@rk3308b-buildroot:/# [ 10.293420] aicbsp: aicbsp_set_subsys, fail to set AIC_WIFI power state to 1 insmod: can't insert 'aic8800_fdrv.ko': No such device date Thu Jan 1 00:00:10 UTC 1970 root@rk3308b-buildroot:/# root@rk3308b-buildroot:/# root@rk3308b-buildroot:/# date Thu Jan 1 00:00:12 UTC 1970 root@rk3308b-buildroot:/# date Thu Jan 1 00:00:13 UTC 1970 root@rk3308b-buildroot:/# date Thu Jan 1 00:00:14 UTC 1970 root@rk3308b-buildroot:/# date Thu Jan 1 00:00:15 UTC 1970 root@rk3308b-buildroot:/# ping www.baidu.com PING www.baidu.com (39.156.70.46): 56 data bytes 64 bytes from 39.156.70.46: seq=0 ttl=52 time=121.731 ms ^C --- www.baidu.com ping statistics --- 1 packets transmitted, 1 packets received, 0% packet loss round-trip min/avg/max = 121.731/121.731/121.731 ms root@rk3308b-buildroot:/# date Thu Jan 1 00:00:20 UTC 1970 root@rk3308b-buildroot:/# date Thu Jan 1 00:00:21 UTC 1970 root@rk3308b-buildroot:/# date Thu Jan 1 00:00:22 UTC 1970 root@rk3308b-buildroot:/# date Thu Jan 1 00:00:24 UTC 1970 root@rk3308b-buildroot:/# ping www.baidu.com[ 31.206249] vccio_sd: disabling PING www.baidu.com (39.156.70.46): 56 data bytes 64 bytes from 39.156.70.46: seq=0 ttl=52 time=35.758 ms 64 bytes from 39.156.70.46: seq=1 ttl=52 time=30.510 ms ^C --- www.baidu.com ping statistics --- 2 packets transmitted, 2 packets received, 0% packet loss round-trip min/avg/max = 30.510/33.134/35.758 ms root@rk3308b-buildroot:/# root@rk3308b-buildroot:/# date Thu Jan 1 00:00:33 UTC 1970 root@rk3308b-buildroot:/# date Thu Jan 1 00:00:34 UTC 1970 root@rk3308b-buildroot:/# date Thu Jan 1 00:00:37 UTC 1970 root@rk3308b-buildroot:/# date Thu Jan 1 00:00:39 UTC 1970 root@rk3308b-buildroot:/# date Wed Dec 24 01:45:44 UTC 2025 root@rk3308b-buildroot:/# date Wed Dec 24 01:45:45 UTC 2025 root@rk3308b-buildroot:/# date Wed Dec 24 01:45:45 UTC 2025 root@rk3308b-buildroot:/# date Wed Dec 24 01:45:46 UTC 2025 root@rk3308b-buildroot:/# date Wed Dec 24 01:45:46 UTC 2025 root@rk3308b-buildroot:/# date Wed Dec 24 01:45:50 UTC 2025 root@rk3308b-buildroot:/# |
|
 |
|
理论上，stm32实现一个usb rndis驱动，就可以绑定lwip协议栈驱动4g模块高速上网了，不使用4g模块本身的AT指令TCP和UDP功能。
|
|
 |
|
EC200A和EC200M的区别： EC200ACNV1-CAT4模块3孔转板QTMHXB0036QD cat4:下行速率：150Mbps,上行速率：50Mbps EC200MCNLF-CAT1模块3孔转板QTMHXB0037QD cat1:下行速率：10Mbps,上行速率：5Mbps 卖家说了，两款都没有GPS功能。
|
|
 |
最后一定要记得AT+QICLOSE=0关闭连接，不然建立不了新连接。
root@rk3308b-buildroot:/root# microcom /dev/ttyUSB1
AT+QIOPEN=1,0,"TCP","154.222.17.158",80,0,2ERROR
AT+QICLOSE=0
OK
AT+QIOPEN=1,0,"TCP","154.222.17.158",80,0,2
CONNECT
HTTP/1.1 400 Bad Request
Server: nginx/1.27.4
Date: Tue, 23 Dec 2025 10:04:32 GMT
Content-Type: text/html
Content-Length: 157
Connection: close
<html>
<head><title>400 Bad Request</title></head>
<body>
<center><h1>400 Bad Request</h1></center>
<hr><center>nginx/1.27.4</center>
</body>
</html>
NO CARRIER
AT+QICLOSE=0
OK
root@rk3308b-buildroot:/root#