2 replies to this topic

[luan007]

Hi,

I got my netduino minis for about a week and I'm having a hard time on getting this simple program working,
it works on Netduino Plus..

The 'WriteByte(x)' is working but not 'ReadByte', and I'm pretty sure about wiring RX/TX, and my USB-TTL board has
no problem (can connect with Netduino Plus using the same code)

my mini: 4.2, debug/deploy via TTL

public static void Main()
{
            SerialPort sp = new SerialPort(SecretLabs.NETMF.Hardware.NetduinoMini.SerialPorts.COM1, 9600);
            sp.Open();
            while (true)
            {
                if (sp.BytesToRead > 0)
                {
                        sp.WriteByte((byte)sp.ReadByte());
                }
            }
}

Any reply would be helpful,

Thank you!

Mike Luan

[Nevyn]

my mini: 4.2, debug/deploy via TTL

Mike,

Which COM port (on the Mini)are you using for deployment from Visual Studio? By default the Mini comes with an application deployed which allows you to select the COM port used for deployment and debugging. Have you used this to set the deployment COM port? If so, which port did you set this to?

If you selected COM1 for deployment then (if memory serves) you will not be able to use this for serial comms as well. You will have to use COM2.

Regards,
Mark

[luan007]

Mike,

Which COM port (on the Mini)are you using for deployment from Visual Studio? By default the Mini comes with an application deployed which allows you to select the COM port used for deployment and debugging. Have you used this to set the deployment COM port? If so, which port did you set this to?

If you selected COM1 for deployment then (if memory serves) you will not be able to use this for serial comms as well. You will have to use COM2.

Regards,
Mark

Thanks Mark! Your reply is REALLY clear and helpful! Then I'm going to use RS232 for debugging instead (I was using COM1 before and that's the problem)

But I can still sending out data using COM1 EVEN IF i set it as debugging port, I thought it's still possible to use
it when disconnected from PC, but I don't know if it can be tuned in that way..


Regards

Mike