Figure 1.
System Display Diagram
Figure 2.
System Flowchart
Figure 3.
Serial Port Register Diagram
Figure 4.
Software Design Flowchart
TABLE I.
Brief Description of AT Command Functions
| AT Command | Function |
|---|---|
| AT | Testing for normal startup |
| AT+CWMODE=2 | Setting AP Mode |
| AT+RST | Restart |
| AT+CWSAP="esp","12345678",1,4 | Setting AP parameters with the account name "ESP8266" and password "123456" |
| AT+CIPMUX=1 | Setting multiple connection mode |
| AT+CIPSERVER=1,333 | Starting SERVER mode, setting port to 333 |
| AT+CIPSEND=0,7 | Sending data with a length of 7 characters |
Figure 5.
Normal scanning display status
Figure 6.
Display Error Message on the Screen