我正在尝试使用互操作性功能来为c编写的Pigpio库创建一个.net包装器。但是我似乎陷入了以下错误: “ 无法封送'parameter#2':签名与Interop不兼容”。 C方法具有以下签名:
int gpioWaveAddGeneric(unsigned numPulses, gpioPulse_t *pulses);
其中gpioPulse_t是:
typedef struct
{
uint32_t gpioOn;
uint32_t gpioOff;
uint32_t usDelay;
} gpioPulse_t;
我认为这将是调用该类的签名:
[DllImport(Constants.PiGpioLibrary, CallingConvention = CallingConvention.Cdecl, EntryPoint = "gpioWaveAddGeneric")]
public static extern int GpioWaveAddGeneric(uint numPulses, [In, MarshalAs(UnmanagedType.LPArray)] GpioPulse[] pulses);
GpioPulse []在哪里
[StructLayout(LayoutKind.Sequential, Pack = 1)]
public class GpioPulse
{
private BitMask m_GpioOn;
private BitMask m_GpioOff;
private uint m_DelayMicroseconds;
public BitMask GpioOn { get => m_GpioOn; set => m_GpioOn = value; }
public BitMask GpioOff { get => m_GpioOff; set => m_GpioOff = value; }
public uint DurationMicroSecs { get => m_DelayMicroseconds; set => m_DelayMicroseconds = value; }
}
和BitMask:
[Flags]
public enum BitMask : uint
{
None = 0x00000000,
All = 0xFFFFFFFF,
Bit00 = 0x00000001,
Bit01 = 0x00000002,
Bit02 = 0x00000004,
Bit03 = 0x00000008,
}
知道我在做什么错吗?
答案 0 :(得分:0)
解决方案: C#中的uint32_t只是一个uint,因此您的GpioPulse C#类应该与C版本一样简单,例如公共结构GpioPulse {uint gpioOn; uint gpioOff; uint usDelay; }