I purchased a Seedstudio SD shield (http://www.seeedstud...l?cPath=132_134

) but it does not appear to work. Has anyone used this shield with the Netduino?

If not, what shield do you suggest?

I need to store 18 configuration values (double) from one power up to the next...

-Capel

NooM,

I have the N2 with a 2gb SD card.

The reason I say it does not appear to work is because my app works when the I/O is connected to the N2, but when I plug in the SD shield and move all the I/O wires to it, the app will not run. Nowhere does the documentation say it is Netduino compatible, I was assuming it was when I bought it, now I'm trying to confirm this assumption. I have not written any code to read/write to the SD card, yet.

You can see my initial schematic here: http://forums.netdui...uttons-and-lcd/

I'm not familiar with eeproms, would you point me to some tutorials? I like the sound of cheap:)

I definitely have a conflict with the SPI pins. If I free up D10-D13 I'm 2 pins short of what I need for the project.

It's a feature on our wish list, something that we baked into the hardware design. Right now we're focused on ensuring that all Netduino Plus 2 features work really well for our community and that projects upgrade seamlessly.

After the holidays we'll start attacking new software features. If this one gets the most votes, it gets in the first batch

Chris

Did this make the list?

I have code that works fine when running on N2, but when I run the same code on the N2+ I get a System.ArgumentException on this line of code:

// Input Trigger - This input starts the cycle

InterruptPort inpTrigger = new InterruptPort(Pins.GPIO_PIN_A5, true, Port.ResistorMode.Disabled, Port.InterruptMode.InterruptEdgeLow);

It is simply a button to start my program running.

BTW I am using:

using SecretLabs.NETMF.Hardware.NetduinoPlus;

Any suggestions?

-Capel

Ok, so I referenced

using SecretLabs.NETMF.Hardware.Netduino;

and I still get the same exception.

I next tried moving the button assignments around and now I get the same exception, but on a [font="arial, helvetica, sans-serif;"]different InterruptPort assignment.[/font]

[font="arial, helvetica, sans-serif;"]Keep in mind that I'm moving from a Netduino 2 to a Netduino + 2. Chris' post refers to N+ to N+2.[/font]

Upon closer examination, here is the debug output:

A first chance exception of type 'System.ArgumentException' occurred in Microsoft.SPOT.Hardware.dll

A first chance exception of type 'System.ArgumentException' occurred in Microsoft.SPOT.Hardware.dll

An unhandled exception of type 'System.ArgumentException' occurred in Microsoft.SPOT.Hardware.dll

Any suggestions?

Hanz,

Well I'm still getting intermittent behavior with the second line of the display. I grounded D0-D4 with a 100k resistor as you suggested and that did not resolve the problem. I purchased another 16x2 LCD from Adafruit and that did not solve the problem. I've even ported my code to a N+2 and I'm still seeing the issue of sometimes being able to see line 2 but most of the time I can't. If I unplug the USB cable to reboot, hold my jaw just right and I'm not wearing any socks, the 2nd line will sometimes work. All joking aside, I'm convinced its not a hardware problem.

You mentioned that it could be an issue with clocking. I assume this would be in the MicroLiquidCrystal library correct? Would a shift register and Mario's library solve the problem?

This was a strange issue and I never did figure out why the N2 code would not run on the N+2, I did find a work around.

Basically, I defined the input using the Auto-Repeat button (http://forums.netdui...n-press-sample/) and it worked. Don't ask me why this worked, but it did.

I agree, it's hardly a h/w error "anymore". Using a shiftregister would probably help but you need to change your wiring to use SPI with the shift register and probably have to use a different library (e.g. Mario's) too. Before trying that, I could post you some code to try when I'm home after work today. That code would be more or less a drop in replacement.

Any suggestions you have would be appreciated.

Hanzibal,

First let me say thank you for your assistance. I've been working with your code and I can't seem to get it to work. My breadboard is wired as shown in the attached image. I'm not sure if I have the pins assigned wrong or your code need to be tweaked for the N+2. Here is my code using your sample:

using System;using System.IO;using System.Net;using System.Net.Sockets;using System.Threading;using Microsoft.SPOT;using Microsoft.SPOT.Hardware;using SecretLabs.NETMF.Hardware;using SecretLabs.NETMF.Hardware.Netduino;using Hd44780Test;namespace FirstPlus    {    public class Program        {        public static void Main()            {            // create the LCD driver class (d4, d5, d6, d7, E, RS)            var lcd = new Hd44780(Pins.GPIO_PIN_D4, Pins.GPIO_PIN_D5, Pins.GPIO_PIN_D6, Pins.GPIO_PIN_D7, Pins.GPIO_PIN_D9, Pins.GPIO_PIN_D8);            lcd.Write("- Hd44780 Demo -");            bool onoff;            for (int i = 0; true; i++)                {                onoff = (i & 1) == 0;                lcd.ChangePosition(1, 0);                lcd.Write((i & 0xff).ToString("X2") + " LED is " + (onoff ? "ON " : "OFF"));                //led.Write(onoff);                Thread.Sleep(250);                }            }        }    }

Hanz,

Yes, I will stand up a new board with just the LCD on it and see if my wiring is the issue. It is a rather complex breadboard. I will also take a picture of the setup and what I'm seeing on the LCD. I won't be able to do this until this evening after work.

Here is the picture. I'll set the other board up this weekend.

I'll remove the pull-downs on d0-d3, but do you think that is causing this problem?

Hanzibal,

Tweaking the delay to 2ms did the trick. I also removed the pull-downs. Thanks for all your help.

I'm using this keypad: http://www.adafruit.com/product/419

with the Toolbox.NETMF.Hardware.MatrixKeyPad driver and I'm getting a lot of bounce. It appears that the "time" parameter of the event handler is not working correctly. For example, in the code below, ButtonLastPushed is initially 0 and the first time the button is pushed "time" is zero also. Has anyone else run into this problem and found a fix?

/// Triggered when a key is pressedstatic void kb_OnKeyDown(uint KeyCode, uint Unused, DateTime time) {   if (ButtonLastPushed.AddMilliseconds(intBounceWait) > time) return; // prevent bounce   ButtonLastPushed = time;   Debug.Print("Key pressed: " + KeyLookup((int)KeyCode).ToString()); }

To start with I'm using the N+2. Sorry about posting in the wrong forum if this has anything to do with it.

The value of the "time" parameter is always 00:00:00 as if there were no clock at all on board. I don't expect the board to have the current time, just the time relative to startup. I can work around my problem with the code below, but I expected the Toolbox.NETMF.Hardware.MatrixKeyPad code to work and was wondering if anyone else had seen this problem.

static void kb_OnKeyDown(uint KeyCode, uint Unused, DateTime time){   KeyDown(KeyLookup((int)KeyCode), DateTime.Now);}// Process the keypad inputstatic void KeyDown(int KeyVal, DateTime dtTime)  {  if (ButtonLastPushed.AddMilliseconds(intBounceWait) > dtTime) return; // prevent bounce  ButtonLastPushed = dtTime;...

I'll have to retract that last post. It does not work either. Looks like there is something wrong with the clock...

This is weird. The clock works. Debug printing .Now shows the clock incrementing. Maybe it is the keypad.

Thanks for the input Karl. I'll give your suggestion a try.

-Capel

I'm at the conceptual stage of a project and would like some advice. The project can best be described as a game. The "Whack-a-Mole" game is a pretty close approximation of what I'm trying to do except the "moles" are further apart. If you don't know what this game is, watch this 22 seconds of video: https://www.youtube....h?v=D0n8N98mpes

There will be n number of devices in the network and one master controller. I'm thinking the controller will be a laptop, but I'm open to other ideas.

Each device will "display" according to an algorithm running on the master controller. If the mole is whacked while its displayed, a signal should be sent back to the master controller with the time it was whacked.

So my question is what is the best way for the master controller to communicate with the moles? After doing some research, it seems to me that each mole should be an N+2 with a Edimax BR-6258n wireless router running the NeonMika webserver. However, my concern is speed. Would Bluetooth be a better option or maybe one of the Xbee protocols? What about using a Mini instead of a N+2?

The moles will be anywhere from 10 yards to 35 yards from the central controller and up to 10 yards from each other.

What version of Visual Studio is this built in? I get an error saying the project is incompatible with VS2010.

Am I missing something? I downloaded the N+2 Version (10.12.12) and have it running,  but I can't create the "network name". Its not a parameter in

Server WebServer = new Server(PinManagement.OnboardLED, 80, false, "192.168.1.25", "255.255.255.0", "192.168.1.1");

[font="arial, helvetica, sans-serif;"]Does the N+2 version have this?[/font]

I saw you using gradient factors in the video. What deco algorithm are you using and did you code that yourself?