EMTC
来自Jack's Lab
(版本间的差异)
(→Air724UG) |
(→Air724UG) |
||
第93行: | 第93行: | ||
* [http://doc.openluat.com/article/383/0#332__242 Air724UG_模块硬件设计手册] | * [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] | * [http://doc.openluat.com/article/2236/0 EVB_Air724UG_A13开发板使用指南] | ||
+ | |||
+ | === 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 | ||
+ | </source> | ||
<br> | <br> |
2021年2月18日 (四) 14:20的版本
目录 |
1 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
2 Hardware
2.1 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
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
2.2 ML302
移动官方 LTE Cat1 模组
- 32mm x 29mm x2.5mm
- 紫光展锐 UIS8910 / RDA8910 / 春藤 8910DM
2.3 Air724UG
- 24mm x 24mm
- 紫光展锐 UIS8910 / RDA8910
2.4 移远
3 Air724UG
3.1 RNDIS
Ubuntu:
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
4 Reference