實物

用CH340 USB轉(zhuǎn)ttl，連接，CH340rxd-》AIR780txd(圖上6所示) ，CH340txd-》AIR780rxd(圖上6所示) 。

打開安信可串口調(diào)試助手

命令文檔如下：

AT?Commands?Documentation

English+中文

AT+RESET

This?command?is?used?to?restart?the?wireless?module.

4G無線模塊air780復(fù)位命令既上圖中1命令

AT+MCONFIG

This?command?is?used?to?configure?the?wireless?module's?client?ID, username, and?password.

這個命令就是MQTT協(xié)議連接命令

Format:格式

AT+MCONFIG="clientid","username","password"

Example:案例

AT+MCONFIG="k0m5r7ycMDl.8FvvLEUFQCldBEQFZqCv|securemode=2,signmethod=hmacsha256,timestamp=1702450549302|","8FvvLEUFQCldBEQFZqCv&k0m5r7ycMDl","ebfb098356549a87d8a6e7b8664877079d20e5162e42dd6b8cd439e89d8df798"

客戶端：k0m5r7ycMDl.8FvvLEUFQCldBEQFZqCv|securemode=2,signmethod=hmacsha256,timestamp=1702450549302|","8FvvLEUFQCldBEQFZqCv&k0m5r7ycMDl

賬號：8FvvLEUFQCldBEQFZqCv&k0m5r7ycMDl? 其中k0m5r7ycMDl 是阿里云產(chǎn)品分類

密碼：ebfb098356549a87d8a6e7b8664877079d20e5162e42dd6b8cd439e89d8df798

這些可從阿里云MQTT服務(wù)器實例中注冊得到

{"clientId":"k0m5r7ycMDl.8FvvLEUFQCldBEQFZqCv|securemode=2,signmethod=hmacsha256,timestamp=1702524063228|","username":"8FvvLEUFQCldBEQFZqCv&k0m5r7ycMDl","mqttHostUrl":"iot-060a9eh1.mqtt.iothub.aliyuncs.com","passwd":"8677d9bb8f53a9a616d774ba9105c7ee000231f78c7d12fb0feb9c36b9056d09","port":1883}

AT+MIPSTART

This?command?is?used?to?start?an?IP?connection?by?setting?the?IP?address?(or?domain) and?port?number. 這個命令是連接到TCP服務(wù)器，就是服務(wù)器地址

Format:

AT+MIPSTART="ip?or?domain","port"
Example:

AT+MIPSTART="iot-060a9eh1.mqtt.iothub.aliyuncs.com","1883" 你自己創(chuàng)建的MQTT服務(wù)器地址

AT+MCONNECT

This?command?is?used?to?start?a?network?connection?by?setting?the?connection?status?and?timeout.心跳包長聯(lián)機命令
Format:

AT+MCONNECT=<connect>,<timeout>
Example:

AT+MCONNECT=1,60?? 1表示連接，60秒頻率連接一次，超過60秒掉線

以下是帶GPS的命令

AT+CGNSPWR? GPS模塊開關(guān)命令

This?command?is?used?to?control?the?GPS?positioning?function?of?the?wireless?module.

To?turn?on?GPS?positioning:

AT+CGNSPWR=1??? 打開GPS
To?turn?off?GPS?positioning:

AT+CGNSPWR=0? ? 關(guān)閉GPS

AT+CGNSINF? 獲取具體GPS定位信息

This?command?is?used?to?get?GPS?positioning?information.

Example:

AT+CGNSINF

The?device?returns?the?following?information:

+CGNSINF:?1,1,20231213043400,22.742352,114.449663,116.099,0.25,0.00,3,,3.10,2.18,4.00,,11,10,,,34,,

This?means:

-?<GNSS?run?status>:?1, GNSS?is?running.
-?<Fix?status>:?1, positioned.
-?<UTC?date?& Time>:?20231213043400, UTC?date?and?time?is?04:34:00 on?December?13,?2023.
-?<Latitude>:?22.742352, latitude?is?22.742352 degrees.
-?<Longitude>:?114.449663, longitude?is?114.449663 degrees.
-?<MSL?Altitude>:?116.099, altitude?above?sea?level?is?116.099 meters.
-?<Speed?Over?Ground>:?0.25, ground?speed?is?0.25 knots.
-?<Course?Over?Ground>:?0.00, ground?course?is?0.00 degrees.
-?<Fix?Mode>:?3,?3D?positioning.
-?<HDOP>:?3.10, horizontal?accuracy?factor?is?3.10.
-?<PDOP>:?2.18, position?accuracy?factor?is?2.18.
-?<VDOP>:?4.00, vertical?accuracy?factor?is?4.00.
-?<GNSS?Satellites?in?View>:?11, the?number?of?GNSS?satellites?in?view?is?11.
-?<GNSS?Satellites?Used>:?10, the?number?of?GNSS?satellites?used?for?positioning?is?10.
-?<C/N0 max>:?34, the?carrier-to-noise?ratio?of?the?strongest?satellite?signal?received?is?34 dBHz.

So, your?device?has?successfully?received?the?GPS?signal?and?has?positioned?to?the?location?with?latitude?22.742352, longitude?114.449663, and?altitude?116.099 meters.

所以，你的設(shè)備已經(jīng)成功獲取到GPS信號，并且已經(jīng)定位到緯度22.742352，經(jīng)度114.449663，海拔高度116.099米的位置。其他的信息沒有用，這個定位相差500米以上，所以這個帶GPS模塊版本也沒多大用。AIR780EG，只選780E就可以。文章來源地址http://www.zghlxwxcb.cn/news/detail-769102.html

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