USR IOT RJ45, User Manual

Page: 18 / 41

Convert Server User Manual www.usriot.com
Jinan USR IOT Technology Limited 18 / 41 tec@usr.cn
Data: Data: Data: Data:
Variable length,the maximum not exceeding 1000bytes.
Sum Sum Sum Sum check: check: check: check:
From the function word to check byte (does not contain a check byte), add Sum check.
The following is an example of a specific application:
send data:0x55 0xaa 0x00 0x0a 0x00 0x00 0x00 0x21 0x00 0x85 0x00 0xA8 0xC0 0x01 0x0f
Length:0x00 0x0a
Function byte:0x00 (UDP;Short connection;IP;cut protocol)
Destination port:0x21 0x00(33)
Target address:0x85 0x00 0xA8 0xC0 (192.168.0.133)
Data:0x01(data length :1)
Sum check:0x0f (0x00+0x00+0x00+0x21+0x00+0x85+0x00+0xA8+0xC0+0x01=0x0f)
5.2.3. 5.2.3. 5.2.3. 5.2.3. HTTPD HTTPD HTTPD HTTPD Client Client Client Client mode mode mode mode
This mode is used to send data to the HTTP server.
After setting the HTTP header format by webpage or AT command, the data sent each time by UART will add
the HTTP header automatically.Convenient for the user directly submit data or read data from the HTTP
server.
Below is the specific application, for example:
The first set HTTP parameters using AT instructions.
AT+HTTPURL=192.168.1.1,80 The serveraddress and portsettings
AT+HTTPTP=POST Set the HTTP type, GET, PUT or
POST
AT+HTTPPH=/set Set the path,the mostis50 bytes
AT+HTTPCN=keep-alive Set the Connection,maximum length
of 20bytes
AT+HTTPUA=lwip13.2 Set the User-Agent,maximum length
of 20bytes
If the sending data is 1234.In the 80 port of 192.168.1.1 will receive the following data
POST /set HTTP /1.1
Connection:keep-alive
User-Agent:lwip1.3.2
Content-Length:4
Host:192.168.1.1:80
1234
If the HTTP type is GET, the 80 port 192.168.1.1 receive data
POST /set 1234 HTTP /1.1
Connection:keep-alive
User-Agent:lwip1.3.2
Content-Length:0