ai-thinker-open / gprs-at

Ai-Thinker A9 GPRS AT Module Related

Ai-Thinker GSM/GPRS/GPS Module AT Firmware Related

Ai-Thinker GPRS AT module related ( Doc and firmware etc.) 安信可 GPRS模组AT指令固件相关

Module: A9 A9G

A9/A9G

1. Official Wiki: All About GPRS Module here

2. Online Doc sources

• AT Command Set Doc

• Change History

3. Firmware

Version information will be print after power on, or query version info by AT command ATI

• Download from official website
• Download from github

4. Development On Chip

C SDK: refer to GPRS_C_SDK

5. pay attention and frequently asked questions

---

---

A9/A9G__zh-cn

1. 官方 Wiki: 官方所有GPRS相关的都在这里了，可以在这里找到你需要的

2. github上的在线文档

• AT指令集

• 更新历史

• 功能说明

3. Firmware

开机会打印版本信息，或者使用ATI查询版本信息

• 官网下载最新的
• github下载最新固件

4. 片上二次开发

到A9/A9G开始，不只是发布AT固件，因为模块本身性能很强大，接口也很丰富，可以直接作为MCU来使用 因此，提供了方便开发的SDK

• 提供C SDK: 参考 GPRS_C_SDK

5. 注意事项及常见问题

gprs-at's Issues

Undocumented CUSD result codes

Hi,

Can anyone please explain what the following means, +CUSD: 6, "..."?
Also, what does "+CME ERROR: 15790320" mean?

Thank you.

Unable to enter https://wiki.ai-thinker.com/ don't works

Good day,

I'm writing you from Colombia and looks like a problem with the wiki page, 502 Bad Gateway Issue, and I need to download Ai-Thinker GSM Module Download Tool, and other stuff, please help.

Regards,
Andrés

Connection issues

Hi,
I'm currently working on establishing an internet connection with an A9G(V02.02.20180825R) and a China Unicom SIM card. But It just doesn't want to work.

eg: AT+CREG always give me a +CREG:0,1 and AT+COPS=? returns nothing

I tried with my own China Mobile SIM card and I've been able to go all the way to getting an IP, though every HTTPGET I've done so far gave be back an error 400.

Is there an issue with China Unicom on the A9G or do I need to do something specific to work with it?

How to upload the AT-Firmware to A9G?

I want to upgrade A9G's AT-Firmware.
However I can't find any A9G's firmware-uploader
for uploading AT-firmware.

Where to get it?

Thank you.

Provide source code

Hi,

I like your products so far, but could you provide the soruce code for download?
The links doesn't seem to work, they only give documents or binary files...

rgds

A9 module does not work command AT + VGT

AT + VGT only supports AT + VGT = 16 after which the microphone turns off and then it is impossible to turn it on, what should I do?

A9 module " in Strings

Hi guys,
I want to use the mqtt commands to send data to my mqtt broker. Ths works fine with the command AT+MQTTPUB=,<"topic">,<"data">,,, as long as I use simple data like "abcdefgh1234-."....
But I want to publish json strings, and json data uses the " character. Sadly, this doesn't work, since the " character seems to be reserved for marking the start and the end of the string. Is there any way to include the " character in a string message?

AT+LOCATION=2 00.000000,000.000000 OK

I use firmware "ai-thinker_a9_a9g_at_v02.02.20181011r" with A9G module.

Run this command:
AT+GPS=1
AT+CGATT=1
AT+CGACT = 1,1
AT+CGDCONT=1,"IP","internet
AT+LOCATION=2
Return value:
00.000000,000.000000 OK
How i can do to get true coordinates.
Thank for help.

AT command to receive DTMF?

In my project I want to use DTMF function but not able to find AT command to enable DTMF receiving.

UNABLE TO ESTABLISH A CONNECTION USING AT COMMAND OF MQTT AND HTTP

hello there,
I'm trying to send GPS signal raw data of A9G pudding board to Microsoft Azure platform or any third party cloud. I have three questions.
1). im getting GPS raw data in NMEA string. but don't know how to convert them into LATTITUDE AND LONGITUDE OF GOOGLE MAP.
2). I'm unable to connect to testing MQTT broker can you please explain this command

everything is going fine till network establishment.
AT+MQTTCONN="www.anthinkerwx.com",1883,"12345",120,0,"Ai-thinker","123456" //The client waits and connects to the server while sending CONNECT

Broker = test.mosquitto.org
port=1883
"12345" why is this digits for?
AI-thinker is client or username ??
3). Can you help me with HTTP secure connection?
for mqtt I have to attach a certificate which is a string so how can I attach this?

@Neutree can you provide any examples or guidance.
thanks

unable to upgrade A9G firmware on windows 7

Hello I have A9G module with 2018 06 firmware,
I have usb to serial (3.2 volt logic)adapter but fpupgrade.exe does not recognize module, nothing to select in the list of com ports .

Here is what I get on comport on host uart when I boot up device

Example Post in A9G

Good day,

I there someone tha sucesfully implemented AT+HTTPPOST command, I can use the AT+HTTPGET command, this is the answer when I wrote ATI:

V01.06.20171120RC

OK

Regards
ANDRES

HTTP POST DOES NOT WORK

Hello,

Following HTTP POST command gives CME error 58.
HTTPPOST="http://demo.thingsboard.io/api/v1/Tettekop/telemetry","application/json","{"lat":4444,"long":5555}"
MQTT and GET work.

Anybody know whats wrong?

AT Command is not working with SDK

Hi, I am using a9G pudding board and using "Ai-Thinker_A9_firmware_release_v1.6_RC" firmware.
With native firmaware i can use AT commands with no problem.
I uploaded demo gpio app according to instructions "https://ai-thinker-open.github.io/GPRS_C_SDK_DOC/en/c-sdk/burn-debug.html" then i can not use serial port and AT commands.
My question isn't it possible to use AT commands on an app uploaded board.

a9 hands Free

I want to make a device with hands-free talking feature with AI THINKER A9 GSM Module.
But when I examined the AT command set, I couldn't see any commands related to Hands Free and Echo suppression. Is Hands Free speech and echo suppression possible with A9 Module?

Init...

My module seems to be reboot alone periodically. In my console, it writes Init... Init... Init... and stops each time listen AT commands during few seconds.

It never registers a netwok.

Any idea?

Undocumented AT Response

Hello @Neutree ,

When using the AT command firmware, after approximately 8 hours of TCP/IP connection, the unsolicited AT response "+CGDMODIND:1" is issued.

The unsolicited "+CGDMODIND:1" response is not documented. What does the response mean?

After the unsolicited response, when trying to send data using "AT+CIPSEND=10", the module issues "COMMAND NO RESPONSE!" after 20 seconds.

Also "COMMAND NO RESPONSE!" is not documented.

What is the correct method to handle such responses?

Can we send http post request through A7 module.

i have purchased new a7 module,but cant find way to send http post request.

at+ciphcfg is not worked.

In new firmware V02.00.20180611RC at+ciphcfg command is not worked. Single UDP connection.

at+ciphmode=0
OK
at+ciphcfg=0,60
OK
at+ciphcfg?
+CIPHCFG:60,55,
at+ciphcfg=1,30313233343536
+CME ERROR: 53

Any ideas?

How to use http command for data sending on servers

I am using A9 gsm gprs module for data send on servers .but no data received
On servers (json format) usin AT command

AT+CUSD command incompatible with 3GPP 27.007 standard

Hi,

The standard specifies the DCS parameter is optional for AT+CUSD command. However, issuing the AT+CUSD command without the DCS parameter results in "+CME ERROR:Excute command failure". I am using firmware v02.02.

Thank you.

AT+MQTTCONN doesn't work with port different from 1883

Hello the command:
AT+MQTTCONN="www.myserver.com",1883,"12345",120,0,"Ai-thinker","123456"
works perfect if the port is 1883 but in my case I have the MQTTBox server running on different port, changing the command in something like:
AT+MQTTCONN="www.myserver.com",8888,"12345",120,0,"Ai-thinker","123456"
I get no connection and the following error:
+MQTTDISCONNECTED: 256