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WalterDuino

Member Since 22 Nov 2011
Offline Last Active Feb 24 2016 03:57 PM
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Posts I've Made

In Topic: GSM Playground (GSM Shield)

17 April 2012 - 08:47 PM

Hello Crispin, i've read your post.
I'm beginner in MF & ND+.
I'm using sim900 and i have deployed a little project for testing my hd.
I have included GSM-playground version and replace the code in GSM class as you write.
Nothing...
The GSM module dont blink...
Can you help me please?
Many thanks.
Regards
Walter

Well, my new toy arrived a couple days ago. A battery backpack and the long coveted GSM shield from HW Kitchen. (http://www.hwkitchen...ce-description/)

I can't find any details on the shield with it being used with Netduino sooooo, it'll be a learning curve.

Initial thoughts: Board is packed. Chockers with components and is very tall. They have left space for you to add an under-slung battery for it.

First attempt at being used did nothing :( Plugged it into an Arduino and it logged on to the network. Back into Netduino and nudda. Seems it does not appreciate unassigned pins. Adding the following makes it happy:

        static SerialPort serialPort = new SerialPort("COM1");
        static OutputPort pin_DTMF_ENABLE = new OutputPort(Pins.GPIO_PIN_D2, true);
        static InputPort pin_DTMF_VALID = new InputPort(Pins.GPIO_PIN_D3, false, Port.ResistorMode.Disabled);
        static OutputPort pin_RESET = new OutputPort(Pins.GPIO_PIN_D4, false);
        static OutputPort pin_ONOFF = new OutputPort(Pins.GPIO_PIN_D5, false);

Also, setting the DIP switch for serial to ON causes windows to get upset with the Netduino and whine that it is an unrecognised USB device.
Apparently, this switch is a pass-through so that the serial connection on the Arduino is connected directly to the GSM module. Clearly Netduino does not like this.


Anyway, off to send Hello World to myself.

Cheers,
Crispin
p.s.
Anyone got one of these working? I'll be porting the Arduino libraries over to csharp as I go :|


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