我正在研究一项需要控制直流电机的项目。这些直流电机连接到2个电路板。我静态链接本机代码。这是我需要得到的代码，它是用C ++编写的。
// system defs
typedef int (Sys_Initialise)(); // find all devices connected and open USB paths to them
typedef int (Sys_GetMotorHawkCount)(); // find number of motor hawks connected
typedef int (Sys_GetSwitchingHawkCount)(); // find number of switching hawks connected
typedef int (Sys_GetServoHawkCount)(); // find number of servo hawks connected
typedef int (Sys_GetAn128Count)(); // find number of analogue 128's connected
typedef int (Sys_GetDiyHawkCount)(); // find number of DIY hawks connected
typedef int (Sys_CloseAllDevices)(); // close all open paths to USB devices
// motor hawk defs
typedef int (Motor_SetType)(int devnum, int type); // choose motor type (stepper or DC Motors)
typedef int (Motor_RunSteps)(int devnum, int steps); // set the number of steps to execute
typedef int (Motor_SetDCMotors)(int devnum, int M1Speed, int M1Dir, int M2Speed, int M2Dir); // set the speed and direction of both DC motors
typedef int (Motor_GetDCMotors)(int devnum, int M1Speed, int M1Dir, int M2Speed, int M2Dir); // get the speed and direction of both DC motors from the specified board
typedef int (Motor_GetType)(int devnum, int motor_type); // get the type of motor currently configured for from the specified board
typedef int (Motor_GetStepper)(int devnum, int direction, int interval, int step_mode, int power, int steps, int run_mode, int paused); // get the current stepper motor settings from the specified board
typedef int (Motor_GetStepsRemaining)(int devnum, int steps_remaining); // get the current steps remaining from the specified board
typedef int (Motor_SetDigitalOutputs)(int devnum, int outputs); // set the digital outputs
typedef int (Motor_GetDigitalOutputs)(int devnum, int outputs); // get the current settings of the digital outputs
typedef int (Motor_GetDigitalInputs)(int devnum, int inputs); // get the current digital inputs
typedef int (Motor_SetLimitEnables)(int devnum, int m1_forward, int m1_reverse, int m2_forward, int m2_reverse); // set the limit switch enables
typedef int (Motor_GetLimitEnables)(int devnum, int m1_forward, int m1_reverse, int m2_forward, int m2_reverse); // get the current limit switch enable settings
typedef int (Motor_SetStepper)(int devnum, int direction, int interval, int step_mode, int power); // configure the stepper motor
typedef int (Motor_PauseStepper)(int devnum); // temporarily pause the stepper motor
typedef int (Motor_ResumeStepper)(int devnum); // resume running of the stepper motor
typedef int (Motor_StopStepper)(int devnum); // stop the stepper motor and clear any remaining steps
typedef int (Motor_SetRunMode)(int devnum, int run_mode); // set the stepper running mode (once or continuous)
typedef int (Motor_ResetBoard)(int devnum); // reset board
// switching hawk defs
typedef int (Switching_SetOutputs)(int devnum, int outputs); // set the outputs
typedef int (Switching_GetOutputs)(int devnum, int outputs); // get the current outputs
// servo hawk defs
typedef int (Servo_SetServos)(int devnum, int Servo1, int Servo2, int Servo3, int Servo4, int Servo5, int Servo6, int Servo7, int Servo8); // set the servos
typedef int (Servo_GetServos)(int devnum, int Servo1, int Servo2, int Servo3, int Servo4, int Servo5, int Servo6, int Servo7, int Servo8); // get the current servo positions
typedef int (Servo_SetOutputs)(int devnum, int outputs); // set the outputs
typedef int (Servo_GetOutputs)(int devnum, int outputs); // get the current outputs
// analogue 128 defs
typedef int (An128_GetAnalogueInputs)(int devnum, int *AnInputs); // get the current analogue inputs
typedef int (An128_SetSensitivities)(int devnum, int Sens1to16,int Sens17to32,int Sens33to48,int Sens49to64,int Sens65to80,int Sens81to96,int Sens97to112,int Sens113to128 ); // set the individual sensitivities required on all inputs
typedef int (An128_GetSensitivities)(int devnum, int Sens1to16,int Sens17to32,int Sens33to48,int Sens49to64,int Sens65to80,int Sens81to96,int Sens97to112,int Sens113to128 ); // get the individual sensitivities currently set on all inputs
// DIY hawk defs
typedef int (Diy_SetOutputs)(int devnum, int outputs); // set the outputs
typedef int (Diy_GetOutputs)(int devnum, int outputs); // get the current outputs
typedef int (Diy_GetDigitalInputs)(int devnum, int inputs); // get the current digital inputs
typedef int (Diy_GetAnalogueInputs)(int devnum, int inputs); // get the current analogue inputs
///////////////////////////////////////////////
// other defs
#define STEP_MODE_FULL 1
#define STEP_MODE_HALF 2
#define POWER_ZERO 1
#define POWER_FRACTIONAL 2
#define POWER_MAX 3
#define MHK_STOPPED 0
#define MHK_FORWARD 1 // direction of DC motors
#define MHK_REVERSE 2
#define STEPPER 0 // motor hawk is driving a stepper motor
#define DCMOTORS 1 // motor hawk is driving two DC motors
#define STEPPER_RUN_ONCE 0 // run the specified steps once
#define STEPPER_RUN_CONTINUOUS 1 // run stepper continuously
当我运行调试器并在这两行代码上放置一个断点时，我得到了System.AccessViolationException。当我与制造商交谈时，他们提到将目标平台更改为32位，我做了它并没有修复任何东西。他们还提到将Calling Conventions更改为“fastcall”或“__cdecl”的“stdcall”内容。通过在.dll导入旁边放置CallingConvention = CallingConvention.StdCall，我认为我做得对。我想知道你们是否知道如何解决这个问题。
[DllImport("hawk.dll", CallingConvention = CallingConvention.StdCall)]
public static extern int Motor_GetStepsRemaining(int devnum, int steps_remaining);
[DllImport("hawk.dll", CallingConvention = CallingConvention.StdCall)]
public static extern int Motor_SetDigitalOutputs(int devnum, int outputs);
Motor_GetStepsRemaining(boardOneSetRunMode, stepsRemaining);
shutterSensor = Motor_SetDigitalOutputs(boardTwoShutter, CLOSE);
pressureSensor = Motor_SetDigitalOutputs(boardThreeDc, DOWN);