C# Wrapper Question

[shaggygi]

Hi Jim (and sorry to bother), but I found the following link you participated in and I had a question related to this for C# you might be able to help.

https://stackoverflow.com/questions/62331489/c-sharp-calling-a-dll-function-that-returns-a-pointer-to-pointer-to-an-array-of

First, let me thank you for providing current tidbits to help the community on related topic. Very helpful so far.

I'm creating a C# wrapper class for the STM32CubProg and was successful using similar code to get a list of connected ST-LINKs. The major hurdle now is setting up basic code to pass the selected DebugConnectParameters to connect with the device. When calling the connect function, it always returns -8 (Invalid Parameters). Below is some basic code I've setup...

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
public class DebugConnectParameters
{
    public DebugPort DebugPort;
    public int Index;
    [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 33)]
    public string SerialNumber;
    [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 20)]
    public string FirmwareVersion;
    [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 5)]
    public string TargetVoltage;
    public int AccesPortNumber;
    public int AccessPort;
    public DebugConnectMode ConnectionMode;  
    public DebugResetMode ResetMode;    
    public int IsOldFirmware;    
    public Frequencies Frequencies;    
    public int Frequency;    
    public int IsBridge;    
    public int Shared;
    [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 100)]
    public string Board;
    public int DebugSleep;
    public int Speed;
}

Stm32CubeProgrammer.Commands.StLink.GetList(false, out Stm32CubeProgrammer.Types.DebugConnectParameters[] stLinkList);
int result = Stm32CubeProgrammer.Commands.StLink.Connect(stLinkList[0]);

public static int Connect(DebugConnectParameters debugParameters)
{
    IntPtr stListPtr = Marshal.AllocHGlobal(Marshal.SizeOf<DebugConnectParameters>());
    Marshal.StructureToPtr(debugParameters, stListPtr, true);
    return NativeCommands.ConnectStLink(stListPtr);
}

[DllImport(Native.CubeProgrammerApiDllFilePath, CallingConvention = CallingConvention.Cdecl, EntryPoint = "connectStLink")]
public static extern int ConnectStLink(IntPtr debugParameters);

Were you successful in passing in the DebugConnectParameters data structure to make a successful connection?

Again, sorry for intruding (especially since this is a Python API). Any help will be appreciated.