2-Learn GPRS_Air202 (Air202 development board introduction and download the first program)

http://www.cnblogs.com/yangfengwu/p/8887933.html

Information link

Link: https://pan.baidu.com/s/1968t2QITuxoyXlE_NzGvdA Password: yj7w

After the first version of the test was done on my own development board, I made some adjustments

The first DIP switch is the two serial communication between CH340 and Air202

The second DIP switch is the communication between the microcontroller and the serial port 1 of CH340 and Air202

The third DIP switch is the communication between the WIFI module and CH340, 51 microcontroller

The last one of the DIP switch is not connected, it is to allow free pins for communication to prevent serial

Although the MQTT I used at the beginning of the day directly connected to my server and then communicated with my mobile phone, but I did not have any extra mobile phone cards, so I did not demonstrate direct remote communication first. I dare not use the mobile phone card I am using now, Because the SIM900A broke my mobile phone card a long time ago. . Waiting for my classmate to come back and use the data card he bought, now download the first program

Open the downloaded software

I am also learning to sell. . . Problem solving. .

Take a look at what the tutorial says

I use LUA to develop first, because it is flexible enough and simple enough

Actually now I want to know

Different lod, what is the difference, which one should I download. . . .

I'll look for it (I saw it before and forgot where it was)

Looking for a long time, suddenly. .

see you can click

Finished my little thought. .

After reading so much, it feels like downloading lod first and then if you write the corresponding program yourself, you need to call the corresponding lib

If you are not familiar with it for the first time, try it with the official source code first.

Just want to print something

Look at several source code. .

Just found this a good start