Hi Nobby, Below is my statement. m_objCommMgr = New cCommManager("COM2", 9600, Ports.Parity.None, 8, Ports.StopBits.One) so far, I have not connected RTS and CTS since i am only using 3 wire interface. Since on the board layout, for COM2 it comes with RTS and CTS (derived from GPIO pins), I just wonder if we can disable these RTS and CTS when using COM2. Thus giving my project the much needed GPIO to measure the pulse input. Care to share how do you initialise your COM2 without RTS & CTS? Thanks in advance.

Hi Guys, Need your advice on how to release COM2(CTS, RTS) pins for more GPIO purpose? Currently for my project, I need 2 COM port, but we usually use 3-wire interface, so just like to check how can I release CTS and RTS pins for my other GPIO purpose. Thanks in advance. Regards, Novice Alex

What is the issue with your work around?

Seems like it would do what you want, if you use the code a lot you may benefit from wrapping it as a static method

//C#
public static int MinutesDifference(DateTime lastGPSInfo){
 return (DateTime.Now.Subtract(lastGPSInfo).Ticks/TimeSpan.TicksPerMinute);
}

//VB.Net - My VB is very rusty example is from memory so may not work at all ;-)
Public Shared Function MinutesDifference(ByVal lastGPSInfo As DateTime) As Int
 Return (DateTime.Now.Subtract(lastGPSInfo).Ticks/TimeSpan.TicksPerMinute)
End Function

Nak.

Hi Guys,

There is nothing wrong with my workaround, except that it needs more code to do as compare to DateDiff method. As you know code size for our little Netduino is precious.

Hi Guys, in VB.net, when I need to find the time difference between 2 dates, all I need is to use the function DateDiff. But in NetMF, I can only use date.subtract method and it returns a Timespan object. The problem here is that, in a TimeSpan object, how can I get the total number of minutes between 2 dates? In the NetMF, the totalMinutes method is removed. Only left with the Minutes property which does not serve my purpose. So I have to fall back to use the following statements: if (Date.Now.substract(m_dteLastGPSInfo).tick/TimeSpan.TicksPerMinute )> 30 then .... Any good idea on how to deal with this? Thanks in advance.

Thanks, I voted for the issue too

Hi Stefan,

They have taken up the issue and fixes is schedule for NETMF 3.0

That's an interesting find!
Could you please make an issue at http://netmf.codeple...item/list/basic ?
I can indeed reproduce this and it should never happen.

Hi Stefan,

good to know that you too is facing the same problem.
As suggested, I have make an issue @ codeplex.

Thanks.

Hi Novice Alex,


You can safely use the regular Netduino firmware on your Netduino Plus.

To do this you will want to: erase your board by applying 3V3 power to the gold erase pad underneath D0; flash TinyBooter using Atmel SAM-BA; flash the NETMF runtime using MFDeploy.

Full instructions are available on the Wiki.

Once you flash the regular Netduino firmware on your Netduino Plus, you can use the SecretLabs StorageDevice class to ".MountSD" and re-enable SD card access.

Chris

Hi Chris,

Just like to double confirm. I have successfully update the Netduino firmware onto my Neduino+. So when I start a project, do I set it as Netduino/Netduino+ project? Also in my case, do you have any sample code on mounting the SD card.
Also by using Netduino firmware on access SD card, will i be giving up any digital pins access?

Separately, do I need to mount & un-mount the SD card everything I use? Or only for once during system power up?

Thanks in advance.

Hi Guys,

Anyone try to the following declaration in VB using VS2010.

Public Const INFINITE_DATE As Date = #12/31/9999#

I am using the above declaration for my program to do comparison. But once I declare it, the VS2010(VB) will crash and need to restart.

I have also tried to set the date to today date, example #07/21/2012#, it will still restart the VS.

Hi Novice Alex,


You can safely use the regular Netduino firmware on your Netduino Plus.

To do this you will want to: erase your board by applying 3V3 power to the gold erase pad underneath D0; flash TinyBooter using Atmel SAM-BA; flash the NETMF runtime using MFDeploy.

Full instructions are available on the Wiki.

Once you flash the regular Netduino firmware on your Netduino Plus, you can use the SecretLabs StorageDevice class to ".MountSD" and re-enable SD card access.

Chris

Hi Chris,

Thanks for your quick response.
I will try and revert if there is any problem.

So after this flashing, I suppose I have 128KB code storage size together with 60KB RAM, right?

Hi Chris, Just like to know if it is possible to release more code space if I would to drop the network portion, since for my project, I don't really need it. But I am using Netduino+ because of the SD card reader onboard. If so, how can I go about on loading the firmware, which once should I use? Please advise. Thanks in advance.

Does Interger.Parse("0") not work ?

Does any try out the above using the 4.2 RC4?

Hi,

At the first moment, thanks for your time....


I have tryed with


try
Dim a As String = "10"
Dim h As New System.DateTime(1900, 1, 1, CInt(a), CInt(a), 0)
catch e as exception
Debug.print e.message
end try

and i have the next in debug...

Exception was thrown: System.NotImplementedException


I work with

DeviceInfo:
HAL build info: 4.2.0.0, Netduino Plus (v4.2.0.0 RC3) by Secret Labs LLC
OEM Product codes (vendor, model, SKU): 34, 177, 4097
Serial Numbers (module, system):
00000000000000000000000000000000
0000000000000000
Solution Build Info: 4.2.0.0, Netduino Plus (v4.2.0.0 RC3) by Secret Labs LLC
AppDomains:
Assemblies:
mscorlib,4.2.0.0
Microsoft.SPOT.Native,4.2.0.0
Microsoft.SPOT.Hardware,4.2.0.0
Microsoft.SPOT.Net,4.2.0.0
System,4.2.0.0
Microsoft.SPOT.Hardware.SerialPort,4.2.0.0
Microsoft.SPOT.IO,4.2.0.0
System.IO,4.2.0.0
Microsoft.SPOT.Hardware.Usb,4.2.0.0
Microsoft.SPOT.Hardware.PWM,4.2.0.0
SecretLabs.NETMF.Hardware,4.2.0.0
SecretLabs.NETMF.Diagnostics,4.2.0.0
Without SD Card,1.0.0.0
Microsoft.VisualBasic,1.0.0.0
classFecha,1.0.0.0

I have solved this problem with an function in c#, but may be good i can found a better solution.s

thanks in advance.

Just wonder has the 4.2 RC4 solved the VB parse problem.

Make a call to Math.Pow( a, b )

Do note that latest version does not work for this function.

Hi Moskus,

Can you please post a bug report on this at netmf.codeplex.com?

There are a number of post-release bugfixes being checked into the .NET MF 4.2 codebase. We're hoping to pull a bunch of them in at once and make a Netduino 4.2 RC4 firmware update...so it would be great to get this one in too.

Chris

Hi Chris,

Any timeline for the RC4 firmware?
Please advise.

Novice Alex