codex init

OpticalChannelTester/Pwm.h

@@ -0,0 +1,15 @@
+#pragma once
+#include <Arduino.h>
+
+struct ActualPwm { uint32_t requestedHz; uint32_t actualHz; float actualDutyPct; uint8_t bits; };
+
+class PwmGenerator {
+ public:
+  void begin();
+  bool preview(uint32_t frequencyHz, uint8_t dutyPct, ActualPwm &actual);
+  bool start(uint32_t frequencyHz, uint8_t dutyPct, ActualPwm &actual);
+  void stop();
+  bool running() const { return running_; }
+ private:
+  bool running_ = false;
+};