Accessing Via Com port

[k_senthilnathan]

Hi All,

I want to access com port to read the GPS readings (GPS is hooked to the com port). I am using MScomm to do this, but iam not able to see the GPS signal (NMEA strings).This this the code I use. Please help me if anything is wrong.

MSComm1.CommPort = 1
MSComm1.PortOpen = True
Text1.Text = MSComm1.Input

Thanks in advance for any input.

Nathan

[k_senthilnathan]

Dave Sell,

I am able to see the GPS signal now. This is the code I used. but these signals are in some encyted format. I need to convert them to ascii strings. how to convert these signals to ascii string?


Since GPS is contiuously sending signals, I am using the DoEvents to pause so that I can see the signal in Text box.

Dim start
MSComm1.CommPort = 1
MSComm1.PortOpen = True
MSComm1.Handshaking = comNone
For i = 1 To 10
Text1.Text = MSComm1.Input
start = Timer
Do While Timer < start + 0.25
DoEvents
Loop
Next

Thanks
Nathan.

[Dave Sell]

Glad to hear your communications is working. Are you sure it's encrypted? How would you know that for sure? Maybe you can post an example of your comm input.

[k_senthilnathan]

This is what I see in the Text box.

ff0f3Ìà†à†à†<à†˜†~怘€

Nathan

[Dave Sell]

You can get garbage in your comm input if the baud rate is not set to match both sending and receiving devices. If you're sure they match, then I'm not sure you may be getting binary data. I doubt if it's encrypted, as you say.

You may have to contact the mfg of your GPS device to aqcuire the compatible protocol.

[k_senthilnathan]

Dave Sell,

I tried all the valid baud rates. None of them works. If it is binary data, how can I convert it to ascii string.

Thanks
Nathan.

[Dave Sell]

No one can tell you that except the mfg of the GPS device.

[k_senthilnathan]

Thank You Dave Sell,

It works for baud rate of 4800.

Thank You very much.

nathan.