gismo

Shouldn't you be connecting to the SDA (or SD) and SCL (or SC) lines (top left of the Netduino in your diagram)?

 

Regards,

Mark

 ^^ what he said. Your diagram shows an arduino SDA/SCL hookup.

Hey Alex, 

I'm not sure you can do that at the same time with the standard firmware and netmf sdk...You would need to directly program the the chip register(s) with low-level instructions with native code and bypass the CLR to accomplish that.

BUT, you could accomplish the same "code" and simply write a method like this to simplify your code:

public void Pin1AndPin2(Cpu.Pin pin1, Cpu.Pin pin2, bool onOrOff)
{
pin1.Write(onOrOff);
pin2.Write(onOrOff);
}

and in your program code you would call:

Pin1andPin2(pin1_object, pin2_object,true);

Hey Guys,

I have got a couple of questions regarding interrupts and events and then subscribing to events/interrupts created by the encoder class/driver. With specific regards to a 3 pin (A C rotary encoder with gray code output:

Specifically:

https://www.sparkfun...s/TW-700198.pdf
 

Some background, I found a rotary encoder driver on the forums and the output was not consistent due to what I believed was bounce in the encoder..so I've found a sufficient debounce circuit:

Now, I've wired up the encoder with a hardware debounce and I'm getting consistent and correct output from the rotation. Yay! But still a problem...the interrupt fires twice with each detented rotation/click. Because there are two 4 pulses per click. this makes sense to me...The driver works perfectly if I rotate the encoder between half way between the detents..But this is obviously not how I want to use the device. With each detent click, I only need one event fired. In efforts to optimize the code and not get a double event, is there a way to clear the interrupt queue or disable and re-enable the interrupt? Is that the right way to handle it?

That all being said, I'm really trying to wrap my head around the driver code and subscribers to the events created by the driver. I understand a basic interrupt and the handler, but I need to use the encoder for more several functions..this is where Subscriber come into play. I've spent hours googling, youtubing, MSDNing(the least useful resource IMO) researching this. I'm no c#.net expert and need an explanation on how this works, in understandable terms. Otherwise seems like black magic when stepping through the code..

I'll write out some abbreviated code:

Main/Subscriber

public class Program    {        public static void Main()        {            RotaryEncoder RE = new RotaryEncoder(Pins.GPIO_PIN_D0, Pins.GPIO_PIN_D1);            Subscriber sb = new Subscriber(RE);//instantiate the subscriber                        Thread.Sleep(Timeout.Infinite);        }    }        public class Subscriber        {            public Subscriber(RotaryEncoder rotary)            {                rotary.RotationEventHandler += HandleRotation;            }            public static void HandleRotation(uint data1, uint data2, DateTime time)            {                Debug.Print("EVENT @ "+ time.TimeOfDay);                Debug.Print("Handle Rotation " + data2);            }        }    }

I hope this is clear and thanks in advance for reading through all this.