AC Mains Zero Crossing使用中断检测和控制LED

你好，
目前我正在做一个项目cy8ckit-042-ble PSoC 4在cybl11573-56lqxi。
我用的是交流电250V，50赫兹电源送进我的过零检测电路。在每个周期的ZCD检测交叉（即只有当波穿过由负转正）。
我把这个电路的输出给PSoC作为中断。
同步测试我控制LED以不同功率水平的ZCD。
观察：
1）在1秒计数器值（无时间中断处理程序执行）应该非常接近50上升沿检测。但我得到它作为100 +
2）该计数器的值时才看到，在该引脚驱动模式中断连接是所有组合如下：
A）开漏，驱动高（初始状态低）
b）开漏，驱动Low（初始状态高）
c）高阻抗数字（初始状态高）
d）高阻抗数字（初始状态低）
和柜台仍然0（无时间中断处理程序执行）对所有剩余的驱动模式的排列组合。
3）当我删除链接的男性（男性得到ZCD INTR引脚上的），在4种工作模式中提到的计数器的值是零。
4）当男性在PSoC销男链路连接而另一端，是删除，从ZCD检测电路的O / P，那就是当男性的另一端男性链接是在空气中，计数器的值是50，在上述4种驱动模式。
请你看看能不能提供任何解决方案，中断运行50次1秒的50 Hz的交流电源，以及LED的控制要求。
我正在连接我的工作空间。
谢谢你的建议。
ZCD-PWM.Test.Bull 01.Zip
2兆字节



     以下为原文
  Hello,

Currently I am doing a project on PSoC 4 CY8CKIT-042-BLE on CYBL11573-56LQXI.

I am using AC Mains 250V, 50 Hz supply and feeding it to my Zero Cross Detector circuit. The ZCD detects the crossing after each cycle (that is, only when the wave crosses from Negative to Positive).

I take the output of this circuit and feed it to the PSoC as an Interrupt.

To sync and test the ZCD I am controlling an LED with varied power levels.

Observations:

1) In 1 second the counter value (no of times Interrupt Handler is executed) should be ideally near 50 for rising edge detection. But I am getting it as 100+

2) This counter value is seen only when, the drive modes of the pin on which interrupt is connected is the following of all combinations:

      A) Open Drain, Drives High (Initial State Low)
      B) Open Drain, Drives Low (Initial State High)
      C) High Impedance Digital (Initial State High)
      D) High Impedance Digital (Initial State Low)

And the counter remains 0 (no of times Interrupt handler is executed) on all the remaining drive modes permutation and combinations.

3) When I remove the Male to Male Link (Used to get ZCD Intr on the pin) , the counter value in the 4 working modes mentioned goes Zero.

4) When the male to male link on the PSoC pin is connected but removed from the other end, that is , from the ZCD detection ckt o/p, that is when the other end of the male to male link is in the air, the Counter value comes as 50 in the above mentioned 4 drive modes.

Please see if you can provide any solution so that the the Interrupt runs 50 times in 1 second for 50 Hz AC Supply, and the LED gets controlled as desired.

I am attaching my workspace.

Thank you in advice.

•   ZCD_PWM_Test.Bundle01.zip 2.0 MB