65 lines
3.1 KiB
C#
65 lines
3.1 KiB
C#
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namespace Unosquare.RaspberryIO.Native
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{
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using System.Runtime.InteropServices;
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public partial class WiringPi
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{
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#region WiringPi - Soft PWM (https://github.com/WiringPi/WiringPi/blob/master/wiringPi/softPwm.h)
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/// <summary>
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/// This creates a software controlled PWM pin. You can use any GPIO pin and the pin numbering will be that of the wiringPiSetup()
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/// function you used. Use 100 for the pwmRange, then the value can be anything from 0 (off) to 100 (fully on) for the given pin.
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/// The return value is 0 for success. Anything else and you should check the global errno variable to see what went wrong.
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/// </summary>
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/// <param name="pin">The pin.</param>
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/// <param name="initialValue">The initial value.</param>
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/// <param name="pwmRange">The PWM range.</param>
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/// <returns>The result</returns>
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[DllImport(WiringPiLibrary, EntryPoint = "softPwmCreate", SetLastError = true)]
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public static extern int SoftPwmCreate(int pin, int initialValue, int pwmRange);
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/// <summary>
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/// This updates the PWM value on the given pin. The value is checked to be in-range and pins that haven’t previously
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/// been initialized via softPwmCreate will be silently ignored.
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/// </summary>
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/// <param name="pin">The pin.</param>
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/// <param name="value">The value.</param>
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[DllImport(WiringPiLibrary, EntryPoint = "softPwmWrite", SetLastError = true)]
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public static extern void SoftPwmWrite(int pin, int value);
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/// <summary>
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/// This function is undocumented
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/// </summary>
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/// <param name="pin">The pin.</param>
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[DllImport(WiringPiLibrary, EntryPoint = "softPwmStop", SetLastError = true)]
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public static extern void SoftPwmStop(int pin);
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/// <summary>
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/// This creates a software controlled tone pin. You can use any GPIO pin and the pin numbering will be that of the wiringPiSetup() function you used.
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/// The return value is 0 for success. Anything else and you should check the global errno variable to see what went wrong.
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/// </summary>
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/// <param name="pin">The pin.</param>
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/// <returns>The result</returns>
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[DllImport(WiringPiLibrary, EntryPoint = "softToneCreate", SetLastError = true)]
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public static extern int SoftToneCreate(int pin);
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/// <summary>
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/// This function is undocumented
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/// </summary>
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/// <param name="pin">The pin.</param>
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[DllImport(WiringPiLibrary, EntryPoint = "softToneStop", SetLastError = true)]
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public static extern void SoftToneStop(int pin);
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/// <summary>
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/// This updates the tone frequency value on the given pin. The tone will be played until you set the frequency to 0.
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/// </summary>
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/// <param name="pin">The pin.</param>
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/// <param name="freq">The freq.</param>
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[DllImport(WiringPiLibrary, EntryPoint = "softToneWrite", SetLastError = true)]
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public static extern void SoftToneWrite(int pin, int freq);
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#endregion
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}
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}
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