I am desperate to get my SIM800L module (http://www.ebay.co.uk/itm/SIM800L-GPRS-GSM-Module-Board-Quadband-QUAD-BAND-Antenna-for-MCU-Arduino-/321992759287) sending POST requests for a long period of time... Sometimes it stops after 100 requests in a row, sometimes 300 so it's really weird.
Everytime I run it, it sends the request for a while (between 1 and 3 hours) and suddenly stops on these AT commands:
---> AT+HTTPINIT <--- OK
When it works the OK is on the same line and it goes on to the next AT command.
---> AT+HTTPTERM <--- ERROR ---> AT+HTTPINIT <--- OK ---> AT+HTTPPARA="CID" <--- OK ---> AT+HTTPPARA="UA" <--- OK ---> AT+HTTPPARA="URL" <--- OK ---> AT+HTTPPARA="CONTENT" <--- OK ---> AT+HTTPDATA=1221,10000 <--- DOWNLOAD <--- OK ---> AT+HTTPACTION=1 <--- OK Status: 201 Len: 0 ---> AT+HTTPREAD <--- OK ---> AT+HTTPTERM <--- OK
I thought it was a powering problem so I connected the module to the VIN pin of my arduino mega via a buck converter but the problem is still here!
Does anybody have any idea what could be wrong? I can send you the code if needed.
Many thanks in advance Pauline