Shandong USR IOT Technology Limited USRGM3 用户手册
USR-GM3/GM3s User Manual
Jinan USR IOT Technology Limited
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tec@usr.cn
“[0D]” means carriage return, 0x0D in hex number.
“[20]” means space, 0x20 in hex number.
“[20]” means space, 0x20 in hex number.
2. Restart module, then send “data=www.usr.cn” to HTTP server via serial port，you will
get [www.usr.cn] from server.
NOTE: the server “www.usr.cn” is USR’s HTTP test server, if you send
“data=www.usr.cn” to it, it will feed back the data after “=” with “[]” including.
“data=www.usr.cn” to it, it will feed back the data after “=” with “[]” including.
In the step 1, serial device send “data=www.usr.cn” to GM3, then GM3 prepares
HTTP
package with head information set before, so the package data is:
GET /1.php?data=www.usr.cn HTTP/1.1
Host: www.usr.cn
Accept:text/html
Accept-Language:zh-CN
User-Agent: Mozilla/5.0
Connection: Keep-Alive
Host: www.usr.cn
Accept:text/html
Accept-Language:zh-CN
User-Agent: Mozilla/5.0
Connection: Keep-Alive
After
After
After
After sending
sending
sending
sending data,
data,
data,
data, GM3
GM3
GM3
GM3 receives
receives
receives
receives data:
data:
data:
data:
HTTP/1.1 200 OK
Date: Wed, 24 Jun 2015 04:08:35 GMT
Server: Apache/2.0.63 (Win32) mod_ssl/2.0.65 OpenSSL/0.9.8o PHP/5.2.14
X-Powered-By: PHP/5.2.14
Cache-Control: max-age=600
Expires: Wed, 24 Jun 2015 04:18:35 GMT
Content-Length: 19
Keep-Alive: timeout=15, max=99
Connection: Keep-Alive
Content-Type: text/html
Date: Wed, 24 Jun 2015 04:08:35 GMT
Server: Apache/2.0.63 (Win32) mod_ssl/2.0.65 OpenSSL/0.9.8o PHP/5.2.14
X-Powered-By: PHP/5.2.14
Cache-Control: max-age=600
Expires: Wed, 24 Jun 2015 04:18:35 GMT
Content-Length: 19
Keep-Alive: timeout=15, max=99
Connection: Keep-Alive
Content-Type: text/html
[www.usr.cn]
After GM3 receives the above data, it will analysis the information, and send the result to
After GM3 receives the above data, it will analysis the information, and send the result to
serial device.