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ctacke
877 Posts |
 Posted - 19 Aug 2002 : 13:29:12
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Can I soft reset my ADS system through code?
Yes. A soft reset can be performed programmatically using the KernelIoControl API like this:
#define CTL_CODE( DeviceType, Function, Method, Access ) ( \
((DeviceType) << 16) | ((Access) << 14) | ((Function) << 2) | (Method))
#define FILE_DEVICE_HAL 0x00000101
#define METHOD_BUFFERED 0
#define FILE_ANY_ACCESS 0
#define IOCTL_HAL_REBOOT CTL_CODE(FILE_DEVICE_HAL, 15, METHOD_BUFFERED, FILE_ANY_ACCESS)
extern "C" __declspec(dllimport) BOOL KernelIoControl(
DWORD dwIoControlCode,
LPVOID lpInBuf,
DWORD nInBufSize,
LPVOID lpOutBuf,
DWORD nOutBufSize,
LPDWORD lpBytesReturned);
void SoftReset() {KernelIoControl(IOCTL_HAL_REBOOT, NULL,0, NULL, 0, 0);}
Aternatively you can call CreateProcess to launch restart.exe which in turn makes this same call.
-----------------
Chris Tacke, eMVP
Applied Data Support |
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skydyvyr
2 Posts |
Posted - 07 Apr 2004 : 18:55:16
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| Is there a simple way to access this from VB.NET? |
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akidder
1519 Posts |
Posted - 09 Apr 2004 : 14:02:07
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You may be able to P/Invoke it, but I'm not familiar enough with VB.NET to give you a definitive answer.
We'll give a more detailed response at this topic in the next day or two. Cheers, Drew |
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ctacke
877 Posts |
Posted - 12 Apr 2004 : 10:03:51
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Here are managed versions of the code:
---------
[VB]
Imports System.Runtime.InteropServices
<DllImport("coredll.dll", EntryPoint:="KernelIoControl", SetLastError:=True)> _
Private Shared Function KernelIoControl( _
ByVal dwIoControlCode As Integer, _
ByVal lpInBuf As IntPtr, _
ByVal nInBufSize As Integer, _
ByVal lpOutBuf As IntPtr, _
ByVal nOutBufSize As Integer, _
ByRef lpBytesReturned As Integer) As Boolean
End Function
Private Const IOCTL_HAL_REBOOT As Integer = &H101003C
Public Function DeviceReset() As Boolean
Dim b As Integer = 0
Return KernelIoControl(IOCTL_HAL_REBOOT, IntPtr.Zero, 0, IntPtr.Zero, 0, b)
End Function
---------
[C#]
using System.Runtime.InteropServices;
[DllImport("CoreDll.dll", SetLastError=true, CharSet=CharSet.Auto)]
internal static extern bool KernelIoControl(int dwIoControlCode,
IntPtr lpInBuf,
int nInBufSize,
IntPtr lpOutBuf,
int nOutBufSize,
ref int lpBytesReturned);
public bool DeviceReset()
{
int b = 0;
return KernelIoControl(0x0101003C,IntPtr.Zero,0,IntPtr.Zero,0, ref b);
}
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skydyvyr
2 Posts |
Posted - 12 Apr 2004 : 19:55:18
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I've tried to implement the code snippet you set with no success...
I've placed the code inside of a module within my project named ADSmartIO.vb. As a result, I've had to modify your code slightly to get it to run (and be called from other forms in my project) but I don't see how I broke it.
--Begin Code--
_
Private Shared Function KernelIoControl( _
ByVal dwIoControlCode As Integer, _
ByVal lpInBuf As IntPtr, _
ByVal nInBufSize As Integer, _
ByVal lpOutBuf() As Byte, _
ByVal nOutBufSize As Integer, _
ByRef lpBytesReturned As Integer) As Boolean
End Function
Private Const IOCTL_HAL_REBOOT As Integer = &H4040003C
Public Shared Function DeviceReset() As Boolean
Return KernelIoControl(IOCTL_HAL_REBOOT, Nothing, 0, Nothing, 0, Nothing)
End Function
--End Code--
When I call the above code by:
Dim MyBool as Boolean
MyBool = ADSmartIO.DeviceReset()
DeviceReset() returns False and the device (BitsyX running WinCE.NET build 4.20.01) does not reboot or throw any errors that I can find.
Any further suggestions?
TIA |
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ctacke
877 Posts |
Posted - 13 Apr 2004 : 11:19:13
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| Yep. I didn't fully test the managed code before posting it. I made modifications to the code above and tested it under both languages and it now works. |
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