GM862 communication problem

GPS/GNSS Development Boards
1

Hello All,

I recently put together a quad band GM862 GSM+GPS module with usb interface. The problem is that I am unable to communicate with the device at all :cry:

I installed the usb driver mentioned on the website; a COM port also shows up in the device manager’s hardware profile.

I reset the board and the green light blinks a couple of times before going silent.

I tried using the hyperterminal with the flow control set to Hardware and None, neither of them works.

When I type anything in the hyperterminal, nothing appears in the window i.e., neither the thing I type nor any respone from the device.

I tried looking in the forum for similar problems but I am afraid I haven’t found anything that I could use.

Most people have been able to acheive basic communication atleast.

I look forward to everything that you may have to suggest and get this problem solved.

Thanks in advance,

Shashank.

2

Im having the same problem cant get anything to display on the hyperterminal window.

3

What baud rate are you using? I think it should be 4800. The USB RS232 is usually set between COM3 and COM8.

Hope that help you!

4

Your USB may not be supplying the required power, mine wasn’t.

Connect an external power supply (I do not remember exactly but I used 9V) to the dc barrel jack connector on the board and you should be on.