请教如何用gprs模块用at命令给乐联网发送传感器数据？

jzmno1

模块是sim900a的，支持http协议，请教怎么用at命令调试给乐联网发送传感器数据。


Checking registration status...

AT+CREG?

+CREG: 0,1

OK
The device is registered in home network.

Querying bearer 1 .

AT+SAPBR=2,1

+SAPBR: 1,1,"10.50.159.189"

OK
Bearer  1 is Connected.IP address is "10.50.159.189"

Bearer 1 is Connected.

Initializing HTTP service...

AT+HTTPINIT

+CME ERROR: 3
Error initializing HTTP service.

Setting up HTTP parameters..

AT+HTTPPARA="URL","http://www.lewei50.com/api/V1/gateway/UpdateSensors/jzm"

OK
AT+HTTPPARA="CID",1

OK
AT+HTTPDATA=166,10000

DOWNLOAD

OK
AT+HTTPACTION=1

OK

+HTTPACTION:1,200,48


想搞一个项目感应水压，只有gprs网络。