4G模块使用说明 移远通信LTE Standard EM05系列是一款专为IoT/M2M应用而设计的LTE Cat 4模块。采用节省空间的M.2（NGFF）封装类型，超薄、紧凑的设计使其更易于嵌入到小尺寸产品中。 EM05系列支持最大下行速率150 Mbps，最大上行速率50 Mbps,包含三个型号：EM05-CN、EM05-E和EM05-G。支持LTE-FDD、LTE-TDD、DC-HSDPA、HSPA+、HSDPA、HSUPA、WCDMA和CDMA等多种网络制式。 要在Jetson系列上使用EM-05模块需要重新编译系统内核并刷入新编译的系统。 方法一：替换新内核 1.1 拉取编译好的资料 1.2 修改设备树配置文件 1.3 移动内核和驱动到指定位置 1.4 应用更改并重启验证 方法二：编译刷入完整系统 2.1 获取源码和工具链 安装编译依赖工具 sudo apt install build-essential bc git bison flex libssl-dev zip libncurses-dev make git 创建工具链放置目录 mkdir $HOME/l4t-gcc-toolchain cd $HOME/l4t-gcc-toolchain 下载并解压交叉编译工具链 wget https://developer.nvidia.com/downloads/embedded/l4t/r36_release_v3.0/toolchain/aarch64--glibc--stable-2022.08-1.tar.bz2 tar xf aarch64--glibc--stable-2022.08-1.tar.bz2 进入到缓存好的刷机固件目录 cd $HOME/nvidia/nvidia_sdk/JetPack_6.2.1_Linux_JETSON_ORIN_NANO_TARGETS/Linux_for_Tegra/source  #根据实际目录进行修改 根据 release tag 拉取源码。 Jetson Linux Archive | NVIDIA Developer  ./source_sync.sh -k -t #替换为你自己的发行版本如 jetson_36.4.3 2.2 修改内核源码 本部分内容可参考 移远Linux&Andriod驱动技术手册 Jetson Orin Nano配置文件路径：arch/arm64/configs/defconfig 配置USB转串口驱动添加如下内容 CONFIG_USB_SERIAL=y CONFIG_USB_SERIAL_WWAN=y CONFIG_USB_SERIAL_OPTION=y CONFIG_USB_NET_DRIVERS=y CONFIG_USB_USBNET=y CONFIG_USB_NET_QMI_WWAN=y CONFIG_USB_WDM=y 修改 drivers/usb/serial/option.c，向USB转串口驱动添加VID和PID static const struct usb_device_id option_ids[] = { #if 1 // 2025-04-24 Added by Quectel   { USB_DEVICE(0x2C7C, 0x0125) }, #endif   ... ... } 使用USBNet驱动，文件路径：drivers/usb/serial/option.c static int option_probe(struct usb_serial *serial,           const struct usb_device_id *id) {   ... ... #if 1  // 2025-04-24 Added by Quectel if (serial->dev->descriptor.idVendor == cpu_to_le16(0x2C7C)) {       __u16 idProduct = le16_to_cpu(serial->dev->descriptor.idProduct);       struct usb_interface_descriptor *intf = &serial->interface->cur_altsetting->desc;       if (intf->bInterfaceClass != 0xFF || intf->bInterfaceSubClass == 0x42) {               //ECM, RNDIS, NCM, MBIM, ACM, UAC, ADB               return -ENODEV;       }       if ((idProduct&0xF000) == 0x0000) {               //MDM interface 4 is QMI               if (intf->bInterfaceNumber == 4 && intf->bNumEndpoints == 3                       && intf->bInterfaceSubClass == 0xFF && intf->bInterfaceProtocol == 0xFF)                       return -ENODEV;       } } #endif   /* Store the device flags so we can use them during attach. */   usb_set_serial_data(serial, (void *)device_flags);   return 0; } 添加零包机制，文件路径：drivers/usb/serial/usb_wwan.c static struct urb *usb_wwan_setup_urb(struct usb_serial_port *port,                     int endpoint,                     int dir, void *ctx, char *buf, int len,                     void (*callback) (struct urb *)) { ... ...   usb_fill_bulk_urb(urb, serial->dev,             usb_sndbulkpipe(serial->dev, endpoint) | dir,             buf, len, callback, ctx);   #if 1   //2025-04-24 Added by Quectel for zero packet   if (dir == USB_DIR_OUT) {       struct usb_device_descriptor *desc = &serial->dev->descriptor;       if (desc->idVendor == cpu_to_le16(0x2C7C))       urb->transfer_flags |= URB_ZERO_PACKET;   } #endif   return urb; } 添加Reset-resume机制（休眠唤醒）文件路径：drivers/usb/serial/option.c static struct usb_serial_driver option_1port_device = {   ... ... #ifdef CONFIG_PM   .suspend           = usb_wwan_suspend,   .resume            = usb_wwan_resume, #if 1  //2025-04-24 Added by Quectel   .reset_resume   = usb_wwan_resume, #endif #endif }; 添加QMI_WWAN驱动         移远提供了QMI_WWAN驱动源文件qmi_wwan_q.c，将其复制到 drivers/net/usb/ 目录下。同时修改drivers/net/usb/Makefile，使其能编译 qmi_wwan_q.c #Makefile # must insert qmi_wwan_q.o before qmi_wwan.o obj-${CONFIG_USB_NET_QMI_WWAN} += qmi_wwan_q.o obj-${CONFIG_USB_NET_QMI_WWAN} += qmi_wwan.o  2.3 编译内核 此步骤可能需要进行半个小时以上 创建输出目录 cd ../../                  mkdir kernel_out  编译安装内核 export CROSS_COMPILE=$HOME/l4t-gcc-toolchain/aarch64--glibc--stable-2022.08-1/bin/aarch64-buildroot-linux-gnu-        #设置交叉编译工具 make -C kernel                     #构建 Jetson Linux 内核镜像 sudo -E make install -C kernel     #安装内核模块和树内模块 将内核镜像复制到刷机目录下 cp kernel/kernel-jammy-src/arch/arm64/boot/Image ../Linux_for_Tegra/kernel/Image 构建NVIDIA树外模块（驱动程序）  export CROSS_COMPILE=$HOME/l4t-gcc-toolchain/aarch64--glibc--stable-2022.08-1/bin/aarch64-buildroot-linux-gnu- export KERNEL_HEADERS=$PWD/kernel/kernel-jammy-src make modules 安装到刷机目录下 export INSTALL_MOD_PATH=$HOME/nvidia/nvidia_sdk/JetPack_6.2.1_Linux_JETSON_ORIN_NANO_TARGETS/Linux_for_Tegra/rootfs/ #根据实际目录进行修改 sudo -E make modules_install 开始构建DTB export CROSS_COMPILE=$HOME/l4t-gcc-toolchain/aarch64--glibc--stable-2022.08-1/bin/aarch64-buildroot-linux-gnu- export KERNEL_HEADERS=$PWD/kernel/kernel-jammy-src make dtbs 将生成的dtb文件拷贝到刷机目录 cp kernel-devicetree/generic-dts/dtbs/* ../kernel/dtb/ 2.4 刷入系统 进入刷机固件缓存目录 cd $HOME/nvidia/nvidia_sdk/JetPack_6.2.1_Linux_JETSON_ORIN_NANO_TARGETS/Linux_for_Tegra/source  #根据实际目录进行修改 使用命令行刷机： super模式 sudo ./tools/kernel_flash/l4t_initrd_flash.sh --external-device nvme0n1p1 -c tools/kernel_flash/flash_l4t_t234_nvme.xml -p "-c bootloader/generic/cfg/flash_t234_qspi.xml" --showlogs --network usb0 jetson-orin-nano-devkit-super internal 普通模式 sudo ./flash.sh jetson-orin-nano-devkit-nvme internal 2.5 开机验证 将Quectel_Qconnectmanager上传到开发板 解压并编译 unizp Quectel_QConnectManager_Linux_V1.6.5.zip cd Quectel_QConnectManager_Linux_V1.6.5 make 成功运行便可4G拨号上网 jetson@jetson-desktop:~/Downloads/Quectel_QConnectManager_Linux_V1.6.5$ sudo ./quectel-CM [08-08_11:39:04:415] QConnectManager_Linux_V1.6.5 [08-08_11:39:04:416] Find /sys/bus/usb/devices/1-2.2 idVendor=0x2c7c idProduct=0x125, bus=0x001, dev=0x007 [08-08_11:39:04:416] Auto find qmichannel = /dev/cdc-wdm0 [08-08_11:39:04:417] Auto find usbnet_adapter = wwan0 [08-08_11:39:04:417] netcard driver = qmi_wwan_q, driver version = V1.2.6 [08-08_11:39:04:417] Modem works in QMI mode [08-08_11:39:04:447] cdc_wdm_fd = 7 [08-08_11:39:04:523] Get clientWDS = 5 [08-08_11:39:04:557] Get clientDMS = 1 [08-08_11:39:04:589] Get clientNAS = 2 [08-08_11:39:04:620] Get clientUIM = 1 [08-08_11:39:04:653] Get clientWDA = 1 [08-08_11:39:04:684] requestBaseBandVersion EM05CNFDR08A03M1G_ND [08-08_11:39:04:812] requestGetSIMStatus SIMStatus: SIM_READY [08-08_11:39:04:876] requestGetProfile[pdp:1 index:1] ctnet///0/IPV4V6 [08-08_11:39:04:908] requestRegistrationState2 MCC: 460, MNC: 11, PS: Attached, DataCap: LTE [08-08_11:39:04:940] requestQueryDataCall IPv4ConnectionStatus: DISCONNECTED [08-08_11:39:04:941] ip addr flush dev wwan0 [08-08_11:39:04:947] ip link set dev wwan0 down [08-08_11:39:05:003] requestSetupDataCall WdsConnectionIPv4Handle: 0x8723e530 [08-08_11:39:05:132] ip link set dev wwan0 up [08-08_11:39:05:141] No default.script found, it should be in '/usr/share/udhcpc/' or '/etc//udhcpc' depend on your udhcpc version! [08-08_11:39:05:142] busybox udhcpc -f -n -q -t 5 -i wwan0 udhcpc: started, v1.30.1 udhcpc: sending discover udhcpc: sending select for 10.21.181.66 udhcpc: lease of 10.21.181.66 obtained, lease time 7200 [08-08_11:39:05:282] ip -4 address flush dev wwan0 [08-08_11:39:05:286] ip -4 address add 10.21.181.66/30 dev wwan0 [08-08_11:39:05:292] ip -4 route add default via 10.21.181.65 dev wwan0 查看网卡信息 jetson@jetson-desktop:~$ ifconfig wwan0 wwan0: flags=193 mtu 1500 inet 10.21.181.66 netmask 255.255.255.252 inet6 fe80::5804:41ff:feda:ce83 prefixlen 64 scopeid 0x20 ether 5a:04:41:da:ce:83 txqueuelen 1000 (Ethernet) RX packets 9 bytes 2304 (2.3 KB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 22 bytes 1854 (1.8 KB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 连通性测试