tone-generator/entry.hpp

#pragma once

template <int P, bool v>
struct Checker {
    static constexpr bool value = v;
};

namespace entry {

	enum Type : uint8_t {
		stop       = 0,
		config     = 1,
		set        = 2,
		set_ts     = 3,
		clear      = 4,
		clear_ts   = 5,
		set_saw    = 6,
		set_saw_ts = 7,
	};

	enum NextType {
		nt_none,
		nt_tone,
		nt_tempo,
	};

	struct Tone {
		uint8_t index;
		uint8_t amplitude;
		uint16_t frequency;
		uint8_t mode;
	};

	struct Tempo {
		uint32_t ticks;
		uint32_t us_per_tick;
	};

	inline size_t get_size(Type type) {
		switch(type) {
		case Type::set:
			return 3;
		case Type::clear:
			return 1;
		case Type::set_ts:
			return 5;
		case Type::clear_ts:
			return 4;
		case Type::config:
			return 8;
		case Type::stop:
		default:
			return 1;
		}
	}
};