Added DaisySP

daisysp/Control/phasor.h

@@ -0,0 +1,71 @@
+/*
+Copyright (c) 2020 Electrosmith, Corp
+
+Use of this source code is governed by an MIT-style
+license that can be found in the LICENSE file or at
+https://opensource.org/licenses/MIT.
+*/
+
+#pragma once
+#ifndef DSY_PHASOR_H
+#define DSY_PHASOR_H
+#ifdef __cplusplus
+
+namespace daisysp
+{
+/** Generates a normalized signal moving from 0-1 at the specified frequency.
+
+\todo Selecting which channels should be initialized/included in the sequence conversion.
+\todo Setup a similar start function for an external mux, but that seems outside the scope of this file.
+
+*/
+class Phasor
+{
+  public:
+    Phasor() {}
+    ~Phasor() {}
+    /** Initializes the Phasor module
+    sample rate, and freq are in Hz
+    initial phase is in radians
+    Additional Init functions have defaults when arg is not specified:
+    - phs = 0.0f
+    - freq = 1.0f
+    */
+    inline void Init(float sample_rate, float freq, float initial_phase)
+    {
+        sample_rate_ = sample_rate;
+        phs_         = initial_phase;
+        SetFreq(freq);
+    }
+
+    /** Initialize phasor with samplerate and freq
+    */
+    inline void Init(float sample_rate, float freq)
+    {
+        Init(sample_rate, freq, 0.0f);
+    }
+
+    /** Initialize phasor with samplerate
+    */
+    inline void Init(float sample_rate) { Init(sample_rate, 1.0f, 0.0f); }
+    /** processes Phasor and returns current value
+    */
+    float Process();
+
+
+    /** Sets frequency of the Phasor in Hz
+    */
+    void SetFreq(float freq);
+
+
+    /** Returns current frequency value in Hz
+    */
+    inline float GetFreq() { return freq_; }
+
+  private:
+    float freq_;
+    float sample_rate_, inc_, phs_;
+};
+} // namespace daisysp
+#endif
+#endif