4 replies to this topic

[Jeka]

Hello. Where i have to see to revive and make available not available ports (in schematics i see port 90 is avalible on board, but unused.

This code give me ArgumentException at OutputPort constructor:

public const Cpu.Pin GPIO_PIN_UNSPECIFIED = (Cpu.Pin)90;

        public static void Main()
        {
            // write your code here
            OutputPort op = new OutputPort(GPIO_PIN_UNSPECIFIED, false);

            while (true)
            {
                op.Write(true);
                Thread.Sleep(1000);
                op.Write(false);
                Thread.Sleep(1000);
            }

        }

I'm ready to change netduino firmware code and .netmf sources to do this code working.

For what this? I need my board based on this platform but i need changes for more gpio ports.

[CW2]

The Cpu.Pin enumeration specifies GPIO port pins, not physical package leads. The microcontroller has two ports PA (PA0 = 0, PA1 = 1, ..., PA31 = 31) and PB (PB0 = 32, PB1 = 33, ...), so you'd need to specify the number of PA6 pin (which is connected to package lead 90), that is (Cpu.Pin)6.

[Jeka]

Oh, thanks, i'll try it. But i think will be more questions =))

[Jeka]

So, how access to AD6 AD7? (not avalible 2 analog inputs)

[CW2]

So, how access to AD6 AD7? (not avalible 2 analog inputs)

It depends on the Netduino firmware version. In 4.1.x you'd need to modify the native code of SecretLabs.NETMF.Hardware.AnalogInput class, i.e. add handling of AD6,AD7 channels because it supports only analog channels multiplexed with I/O (AD0 - AD3) and AD4, AD5 (special case, internally multiplexed with I2C signal lines). In 4.2.x the A/D interface has been unified - it is now part of the .NET MF core implementation - and you should be able to use the new Cpu.AnalogChannel enumeration. Please note the Netduino 4.2.x firmware is under development, it does not yet implement this new analog input interface.