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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Runtime.InteropServices;
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namespace USB2XXX
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{
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class USB2PWM
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{
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//定义函数返回错误代码
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public const Int32 PWM_SUCCESS = (0); //函数执行成功
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public const Int32 PWM_ERR_NOT_SUPPORT = (-1); //适配器不支持该函数
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public const Int32 PWM_ERR_USB_WRITE_FAIL = (-2); //USB写数据失败
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public const Int32 PWM_ERR_USB_READ_FAIL = (-3); //USB读数据失败
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public const Int32 PWM_ERR_CMD_FAIL = (-4); //命令执行失败
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//定义初始化PWM的数据类型
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public struct PWM_CONFIG
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{
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)]
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public UInt16[] Prescaler; //预分频器
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)]
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public UInt16[] Precision; //占空比调节精度
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)]
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public UInt16[] Pulse; //占空比，实际占空比=(Pulse/Precision)*100%
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)]
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public UInt16[] Phase; //波形相位，取值0到Precision-1
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[MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)]
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public Byte[] Polarity; //波形极性
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public Byte ChannelMask; //通道号
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}
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//定义PWM测量数据
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public struct PWM_CAP_DATA
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{
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public UInt16 LowValue;//低电平时间，单位为us
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public UInt16 HighValue;//高电平时间，单位为us
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}
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//UTA0101 UTA0201 UTA0301 UTA0302引脚定义参考引脚定义说明文档，主频为200M
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//UTA0403 UTA0402 UTA0401 LIN1对应的PWM通道为0x40,LIN2对应的PWM通道为0x80，主频84M
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//UTA0503 LIN1对应的PWM通道为0x02,LIN2对应的PWM通道为0x04，主频220M
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//UTA0504 LIN1->0x01 LIN2->0x02 LIN3->0x04 LIN4->0x08 DO0->0x10 DO1->0x20,主频240M
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//函数定义
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[DllImport("USB2XXX.dll")]
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public static extern Int32 PWM_Init(Int32 DevHandle, ref PWM_CONFIG pConfig);
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[DllImport("USB2XXX.dll")]
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public static extern Int32 PWM_Start(Int32 DevHandle,Byte ChannelMask,Int32 RunTimeUs);
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[DllImport("USB2XXX.dll")]
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public static extern Int32 PWM_SetPulse(Int32 DevHandle,Byte ChannelMask,UInt16[] pPulse);
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[DllImport("USB2XXX.dll")]
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public static extern Int32 PWM_SetPhase(Int32 DevHandle,Byte ChannelMask,UInt16[] pPhase);
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[DllImport("USB2XXX.dll")]
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public static extern Int32 PWM_SetFrequency(Int32 DevHandle,Byte ChannelMask,UInt16[] pPrescaler,UInt16[] pPrecision);
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[DllImport("USB2XXX.dll")]
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public static extern Int32 PWM_Stop(Int32 DevHandle,Byte ChannelMask);
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[DllImport("USB2XXX.dll")]
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public static extern Int32 PWM_CAP_Init(Int32 DevHandle, Byte Channel,Byte TimePrecUs);
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[DllImport("USB2XXX.dll")]
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public static extern Int32 PWM_CAP_GetData(Int32 DevHandle, Byte Channel,ref PWM_CAP_DATA pPWMData);
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[DllImport("USB2XXX.dll")]
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public static extern Int32 PWM_CAP_Stop(Int32 DevHandle, Byte Channel);
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}
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}
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