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== Overview == LTE Cat1 工信部 2020年1月1日起施行的《增强机器类通信系统频率使用管理规定(暂行)》中明确 eMTC 的频率为: * eMTC 系统使用无线电频率应当取得无线电频率使用许可 * 已规划用于 LTE 的 800MHz、900MHz、1800MHz、1900MHz 和 2100MHz 等公众移动通信频段 * 已规划用于 LTE 的 1447-1467MHz 和 1785-1805MHz 等专用移动通信频段 <br><br> == Hardware == === Overview === 鉴于其上电需要按开关开机的特性,外部必须加一个 MCU: * 检测电池电压,10 min 持续的 < 3.2V,关机。10 min 持续的 > 3.3V,开机 * 作为 LTE Cat1 模组系统的外部看门狗,系统异常需重启 * 定时重启 * 备用系统:切换为 AT 模式 需给 Linux Core 留有接口: * LoRa (SPI) * LTE Cat 1 (USB) * UART ---> MODBUS [[RT5350F]] [[RT5350 Core Module Interface]] [[F1C]] TF 卡 + 文件系统 电源: * SX1278: 1.8 ~ 3.7V * SX1268: 1.8 ~ 3.7V (3.9 max) * ASR6500: 1.8 ~ 3.7V * Air724: 3.3 ~ 4.3V,至少 2A 电流能力。IO 电压 1.8V <br> === ML302 === 移动官方 LTE Cat1 模组 * 32mm x 29mm x2.5mm * 紫光展锐 UIS8910 / RDA8910 / 春藤 8910DM * [https://download.csdn.net/download/llb19900510/12727009 ML302_OpenCPU_2.1.0.2006221020_release.7z] * [https://blog.csdn.net/llb19900510/article/details/106526411 ML302 opencpu开发环境搭建] * https://github.com/hbqs/ML302 * https://gitee.com/chenxiahuaxu/RDA8910_CSDK <br> === Air724UG === * 24mm x 24mm * 紫光展锐 UIS8910 / RDA8910 * https://gitee.com/openLuat/Luat_CSDK_Air724U * https://gitee.com/chenxiahuaxu/RDA8910_CSDK * [http://doc.openluat.com/article/2081/0 合宙Cat1超低功耗方案] * [http://doc.openluat.com/article/2236/0 开发指南] * [http://doc.openluat.com/article/383/0#332__242 Air724UG_模块硬件设计手册_V2.2] * https://blog.csdn.net/weixin_44570083/article/details/104285283 <br> === 移远 === * https://www.quectel.com/cn/infocenter/news/yiyuan-Cat1-chanpin-tiantuan-yinglai-xinchengyuan.htm <br> == Air724UG == * [http://doc.openluat.com/article/383/0#332__242 Air724UG_模块硬件设计手册] * [http://doc.openluat.com/article/2236/0 EVB_Air724UG_A13开发板使用指南] <br> === RNDIS === Ubuntu: <source lang=bash> comcat@auto:~/f1c/linux$ uname -a Linux auto 5.3.0-64-generic #58-Ubuntu SMP Fri Jul 10 19:33:51 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux comcat@auto:~/f1c/linux$ dmesg|tail -n 16 [4658581.814120] tg3 0000:05:00.1 eno2: EEE is disabled [4659835.062397] usb 1-6: new high-speed USB device number 47 using xhci_hcd [4659835.210999] usb 1-6: New USB device found, idVendor=1782, idProduct=4d12, bcdDevice= 0.00 [4659835.211000] usb 1-6: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [4659835.211001] usb 1-6: Product: UNISOC-8910 [4659835.211002] usb 1-6: Manufacturer: UNISOC [4659835.714741] usb 1-6: USB disconnect, device number 47 [4659836.822341] usb 1-6: new high-speed USB device number 48 using xhci_hcd [4659836.971039] usb 1-6: New USB device found, idVendor=1782, idProduct=4e00, bcdDevice= 0.00 [4659836.971041] usb 1-6: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [4659836.971042] usb 1-6: Product: UNISOC-8910 [4659836.971043] usb 1-6: Manufacturer: UNISOC [4659836.985660] usbcore: registered new interface driver cdc_ether [4659836.987884] rndis_host 1-6:1.0 eth0: register 'rndis_host' at usb-0000:00:14.0-6, RNDIS device, f0:4b:b3:b9:eb:e5 [4659836.987904] usbcore: registered new interface driver rndis_host [4659836.992163] rndis_host 1-6:1.0 enxf04bb3b9ebe5: renamed from eth0 # lsusb Bus 001 Device 001: ID 1d6b:0002 Bus 001 Device 002: ID 1782:4e00 </source> BSP .config: <source lang=bash> CONFIG_USB_USBNET=y CONFIG_USB_NET_CDCETHER=y CONFIG_USB_NET_RNDIS_HOST=y CONFIG_USB_NET_CDC_SUBSET_ENABLE=y CONFIG_USB_NET_CDC_SUBSET=y CONFIG_USB_NET_RNDIS_WLAN=y </source> 正常启动 log; <source lang=bash> # dmesg | grep usb [ 0.087514] usbcore: registered new interface driver usbfs [ 0.087722] usbcore: registered new interface driver hub [ 0.087957] usbcore: registered new device driver usb [ 0.152829] sun4i-usb-phy 1c13400.phy: Couldn't request ID GPIO [ 0.890802] usbcore: registered new interface driver rndis_wlan [ 0.896935] usbcore: registered new interface driver asix [ 0.902571] usbcore: registered new interface driver ax88179_178a [ 0.908815] usbcore: registered new interface driver cdc_ether [ 0.914896] usbcore: registered new interface driver net1080 [ 0.920790] usbcore: registered new interface driver rndis_host [ 0.926844] usbcore: registered new interface driver cdc_subset [ 0.933026] usbcore: registered new interface driver zaurus [ 0.938802] usbcore: registered new interface driver cdc_ncm [ 0.968749] usbcore: registered new interface driver usb-storage [ 1.057718] usbcore: registered new interface driver usbhid [ 1.063495] usbhid: USB HID core driver [ 1.094510] usb_phy_generic usb_phy_generic.0.auto: usb_phy_generic.0.auto supply vcc not found, using dummy regulator [ 1.106535] musb-hdrc musb-hdrc.1.auto: MUSB HDRC host driver [ 1.112542] musb-hdrc musb-hdrc.1.auto: new USB bus registered, assigned bus number 1 [ 1.145447] usb0: HOST MAC 4a:0a:44:64:74:fd [ 1.149904] usb0: MAC 5e:2f:11:c1:2c:d0 [ 1.830558] usb 1-1: new high-speed USB device number 2 using musb-hdrc [ 2.025078] rndis_host 1-1:1.0 eth0: register 'rndis_host' at usb-musb-hdrc.1.auto-1, RNDIS device, f0:4b:b3:b9:eb:e5 # dmesg | grep rndis [ 0.890802] usbcore: registered new interface driver rndis_wlan [ 0.920790] usbcore: registered new interface driver rndis_host [ 2.025078] rndis_host 1-1:1.0 eth0: register 'rndis_host' at usb-musb-hdrc.1.auto-1, RNDIS device, f0:4b:b3:b9:eb:e5 </source> Or: <source lang=bash> 启动后 log: rndis_host 1-1:1.0 eth0: register 'rndis_host' at usb-musb-hdrc.1.auto-1, RNDIS device, f0:4b:b3:b9:eb:e5 发现新注册了eth0,手动将 eth0 添加到 network 中的 wan 部分。 /etc/config/network config interface 'wan' option force_link '1' option proto 'dhcp' option ifname 'eth0' /etc/init.d/network restart </source> <br> === PPoE === <br> == Reference == * http://www.cww.net.cn/article?id=461869 * [[NB-IoT]] <br><br>
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