Raspberry Pi中PWM的频率调节 [英] Frequency regulation for PWM in Raspberry Pi

问题描述

我试图通过驱动程序控制步进电机，并修改电机的速度我需要改变PWM的频率，但是我的代码没有允许我对频率进行更改，换句话说，命令是定义固定的
频率值。有人可以帮我解决这个问题吗？ 

I am trying to control a stepper motor by means of a driver, and to modify the speed of the motor I need to change the frequency of the PWM, but my code does not allow me to make that change of frequency, in other words, the command is to define a fixed frequency value . Could someone help me solve that? 

这是我正在使用的代码片段

This is the code snippet that i´m using

  private async void SetupGPIO()
        {
            var gpioController = GpioController.GetDefault(); 
            var pwmManager = new PwmProviderManager(); 
            pwmManager.Providers.Add(new SoftPwm());   

            var pwmControllers = await pwmManager.GetControllersAsync();
            
//use the first available PWM controller an set refresh rate (Hz)
            _pwmController = pwmControllers[0];
            _pwmController.SetDesiredFrequency(240);  

推荐答案

Hello Jose，

Hello Jose,

PwmProviderManager是否来自  Microsoft.IoT.DeviceCore.Pwm Nuget包？

Does the PwmProviderManager come from Microsoft.IoT.DeviceCore.Pwm Nuget package?

我测试以下命令来设置360之类的其他值，它设置成功。以下是测试结果：

I test the following command to set other value like 360, it set successfully. The following is test result:

那么你想设定什么价值？

So what value do you want to set?

祝你好运，

Rita

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