I followed other people’s tutorials last night and started to configure my esp8266 module with the AT command set, but it has not been successful. At the beginning it was
When I sent the command, there was no response at all. Later I realized that I had to flash the AT firmware, nodemcu firmware and other firmware.
Both are not possible. Therefore, the firmware must be updated correctly, otherwise it is definitely not possible.
Later, I finally got a response when I sent the AT command, but the response of the serial port was always garbled, and I didn’t know what was going on.
Since I don’t know how much the baud rate is set to, I tried it out. I didn’t expect the data received by the serial port after the baud rate was changed.
It has also changed. I think it is because the baud rate is set incorrectly. Finally, I finally tried it out. With the correct baud rate, the AT command finally works.
It was successfully applied to my module. I hope that just like me, the students who just started to see can solve their own problems. Thank you.
Before changing the baud rate:
After the baud rate is changed:
In this way, we can start to use the AT command. I have any misunderstandings. Welcome everyone to correct me. Thank you.
This article was first published in the short book by myself, and I have recently moved it!
Author: Allen100
link: https: //www.jianshu.com/p/6eeb5336146d
Source: Jane books
are copyrighted by the author. For commercial reprints, please contact the author for authorization, and for non-commercial reprints, please indicate the source.