Arduino Uno with SIM808 from DFRobot

[KarstenMH]

Hi Bertrand
I am using your SIM808 library on an an Arduino Uno and a SIM808 GSM GPRS GPS shield from DFRobot.com. I have wired it to fit the way uou use the control ports 5 to 8 and it seems to work. I use the "Test" procedure and the SIM808 is powered up and it seems to find the GSM net (the blue NET LED is blinking every third second), but the program never returns from the Init procedure, as seen in the attached screendump.

I have enabled debug in the SimComAT.h like this #define _SIM808_DEBUG 1 //_DEBUG , but no further messages arrived.
Finally I have connected SIM808 pin 16 RESET to D5 of UNO and shield without any change.
Do you any comments or hints for further investigations?

[andrewmzhang]

I'm running into the same error. This library worked for me. https://github.com/DFRobot/DFRobot_SIM808