光电编码器在wince下的使用【C#】

原创于 2010-09-03 20:04:00 发布 · 925 阅读

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#wince #c# #null #thread

本文介绍了一种利用光电编码器连接GPIO口并通过新建线程捕捉信号的方法。通过委托事件机制通知主程序处理顺时针和逆时针旋转以及按钮按下事件。

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光电编码器连接GPIO口，程序中新建线程扫描捕捉GPIO信号，用委托事件机制通知主程序，程序具体逻辑判读如下：

/// <summary> /// 启动新的线程 /// </summary> public void InitPin() { newThread = new Thread(new ThreadStart(Turn)); newThread.Start(); } /// <summary> /// 捕捉信号 /// </summary> private void Turn() { curA = this.Parse(GpioRead(0x17)[0], 3); while (true) { Thread.Sleep(1); curB = this.Parse(GpioRead(0x17)[0], 3); curC = this.CurrAddBefo(curB, curA); curD = this.Parse(GpioRead(0x1f)[0], 1); if (curC == 2 || curC == 4 || curC == 11 || curC == 13) { if (ClockWise != null) { ClockWise(); curA = this.Parse(GpioRead(0x17)[0], 3); } } else if (curC == 1 || curC == 7 || curC == 8 || curC == 14) { if (AntiClockWise != null) { AntiClockWise(); curA = this.Parse(GpioRead(0x17)[0], 3); } } else if (curD == 0) { if (ButtonPush != null) { ButtonPush(); } } } }