[STM32 + esp-12s connect Tencent cloud IOT development platform 1] creation of cloud platform and burning of at firmware

---

Preface

        I used to use ESP-C3 The module has been connected to Alibaba cloud physical network platform , Today, let's play Tencent cloud IOT development platform , I heard that this platform can be used directly Tencent goes on and on App Or Tencent serial applet Direct control , There must be a lot of time left , Bloggers also played , Have a pretty good experience . The feeling is as follows ：
       1. The test tool is very friendly , Anxin can provide a good simulation MCU Of Windows Upper computer visualization software ：loTDevTool：https://axk.coding.net/s/98cbbda6-ff1e-4c38-819d-325bce81bacc;
       2. The connection process is simple , Only two instructions are needed to establish the connection ;
       3. It's really possible to use mobile phones App To control .
        It is said that there is also the function of mobile phone distribution network , But I didn't play either . Bloggers refer to the official blog of Anxin Ke for testing , At present, only ESP-12S This module , But it is a module after all , For connections STM32 or 51 SCM or other MCU Come on , It's a bit cumbersome . still ESP8266-01S It smells good （ Connected to Tencent cloud AT Firmware must 2M The above flash, therefore 01S To burn this firmware , It needs to be changed flash chip ）.

One 、 Creation of Tencent cloud IOT development platform

        Tencent cloud IOT development platform address ：https://cloud.tencent.com/product/iotexplorer;
( If you don't register, you can register and authenticate first ), After you log in , Click on “ Use now ” Then the interface you see should be like this ：

1. Create products

        Don't talk much . Just look at the operation （ Mainly lazy screenshots ）,

2. Configure products and create devices

        This device is for testing , So I won't explain this configuration too much , After configuring once , Just match it according to your needs ：

3. Device triplet description

        After the device is created , It will be in the debugging interface “ Equipment information ” See device triples in , They are ： product ID、 Device name and device key . This is a ESP-12S Important parameters for connecting the cloud . Specific viewing method ：

Two 、ESP-12S Firmware burning

1. Firmware acquisition

        If you have played ESP8266 AT Firmware students may have a doubt , Lexin officially has AT Firmware , Why should I find something else AT Firmware . First explain , Conventional AT Firmware can also be connected to Tencent cloud , But it will be more troublesome , So Lexin also released a version of firmware that can simply connect to Tencent cloud IOT development platform , Its instruction set can also be found in Lexin AT The user guide can be seen ：AT User guide - Tencent cloud loT Instruction set ,
Anxinco ESP-12S Tencent cloud AT Firmware download address ：
https://codechina.csdn.net/mirrors/ai-thinker-open/ai-thinker-open-qcloud-esp-wifi/-/tree/master/qcloud-iot-at-esp8266/QCloud_IoT_AT_ESP8266_FW
There are two versions , Bloggers use ： QCloud_IoT_AT_ESP8266_v2.0.0_20200617_UART_15_13.bin It uses IO15 and IO13 Serial port version of .

2. Firmware burning

        Burn firmware , You also need to use a tool ：flash_download_tool

Download decompression , Run the only .exe file , Then follow the dot ：


Just wait for the burning to complete . Press the reset button after burning .

3、 ... and 、 Connect the test

1. Connect WiFi

        Previously, it was said that Anxin can provide a good testing tool ：loTDevTool,

Be careful ： The serial port of the firmware we use is ：IO15-TXD and IO13-RXD, Default baud rate 115200, So onboard USB It doesn't work , External modules are required .

2. Connect Tencent cloud Internet of things development platform

        Connecting Tencent cloud IOT development platform requires device triples , namely ： product ID、 Device name and device key . How to check? Please turn to the first section . Fill the triples in the device parameters ：

Remember that triples must not be wrong , No one can connect successfully . Blogger here is just a demonstration , Although the above figure is different from the triplet of cloud platform , But the actual configuration is the same ,

If always connected , But that tool shows that it is connected , The module can be reset , Then reopen the debugging tool , Reconnect the WiFi.

3. Subscribe to topics

        Make sure it is connected , And the device is online .,

Topic explain ：
        subscribe ：$thing/down/property/{ProductID}/{DeviceName}
        Parameters ：ProductID It's the product ID 、DeviceName It's the name of the device , Such as ：
$thing/down/property/C9N29PAEXK/LED;
notes ： Input Topic when , Can't use Space Start with , Otherwise, this is the result ：

4. Release the news

        Published and subscribed Topic It's just a little different , That's it down and up; Such as ：
        subscribe ：$thing/down/property/{ProductID}/{DeviceName}
        Release ：$thing/up/property/{ProductID}/{DeviceName}
With Topic after , You need to send Json data , You can refer to ： Tencent cloud data template Protocol , For your convenience , I will post LED Control data ：

{
   "method":"report",
   "clientToken":"123",
   "params":{
		"led1":1
   }
}

Four 、 Tencent goes on and on App control

        You can go to the mobile app store to download Tencent goes on and on App,


After these two steps , You can debug on your mobile phone ESP-12S 了 , The back controls . As long as the process of connecting the cloud platform is simulated with a single chip microcomputer, the remote control of the single chip microcomputer can be achieved . This process will be put into the blog post later .
Pay more attention to , Neverlost ,Nice！