5 replies to this topic

[JR.NET]

Hello,

I would like to set certain pins in my class constructor. I've tried the following but without any luck:

        PWM PWMpinENA;
        InputPort DirectionPinIN1;
        InputPort DirectionPinIN2;
        SecretLabs.NETMF.Hardware.AnalogInput ReadmAPin;
        InterruptPort RPMpin;

        public MotorControl(Pins pwmpin, Pins Direction1, Pins Direction2, Pins mapin, Pins rpmpin)
        {
            PWMpinENA = new PWM(pwmpin);
            DirectionPinIN1 = new InputPort(Direction1, true, ResistorModes.PullUp);
            DirectionPinIN2 = new InputPort(Direction2, true, ResistorModes.PullUp);
            ReadmAPin = new SecretLabs.NETMF.Hardware.AnalogInput(mapin);

            RPMpin = new InterruptPort(rpmpin, false, Port.ResistorMode.Disabled, Port.InterruptMode.InterruptEdgeLevelHigh);
            RPMpin.OnInterrupt += new NativeEventHandler(RPMpin_OnInterrupt);

        }

The class initiation would be:

MotorControl MotorLeft = new MotorControl(Pins.GPIO_PIN_D6, Pins.GPIO_PIN_D9, Pins.GPIO_PIN_D5, Pins.GPIO_PIN_A1, Pins.GPIO_PIN_D10);

However this is not correct. Can anyone point me in the right direction?

Thanks in advance.

[Stefan]

Strange, that should work. I've done the same here:
http://netmftoolbox....iew/8751#134105

Which 'using' lines do you have? The Pins enumeration requires SecretLabs.NETMF.Hardware.

[CW2]

The type of Pins enumeration values is actually Cpu.Pin, so you'd need to change constructor prototype like the following:

public MotorControl(Cpu.Pin pwmpin, Cpu.Pin direction1, Cpu.Pin direction2, Cpu.Pin mapin, Cpu.Pin rpmpin)
{
  ...
}

[Stefan]

The type of Pins enumeration values is actually Cpu.Pin, so you'd need to change constructor prototype like the following:

public MotorControl(Cpu.Pin pwmpin, Cpu.Pin direction1, Cpu.Pin direction2, Cpu.Pin mapin, Cpu.Pin rpmpin)
{
  ...
}

Oh true, missed that!

[JR.NET]

Thanks (and to Stefan: Dank je!!)

I am writing (yet another probably) a motor driver that can also maintain a certain RPM (using an encoder) instead of only PWM values.

I am building a (quite big) tank (with massive DIY tracks) that use two motors to drive it. With an earlier version that only used PWM I has speed sync issues.

Cheers.

[Stefan]

I am writing (yet another probably) a motor driver

Yep, you're correct I recognise your code and have written something simular once myself. But it's very educating writing code. Helps you understand the device.