Initial firmware commit.

firmware/application/rf_path.hpp

@@ -0,0 +1,104 @@
+/*
+ * Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
+ *
+ * This file is part of PortaPack.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __RF_PATH_H__
+#define __RF_PATH_H__
+
+#include <cstdint>
+
+namespace rf {
+
+using Frequency = int64_t;
+
+struct FrequencyRange {
+	Frequency min;
+	Frequency max;
+	/* TODO: static_assert low < high? */
+
+	bool below_range(const Frequency f) const {
+		return f < min;
+	}
+
+	bool contains(const Frequency f) const {
+		return (f >= min) && (f < max);
+	}
+
+	bool out_of_range(const Frequency f) const {
+		return !contains(f);
+	}
+};
+
+enum class Direction {
+	/* Zero-based, used as index into table */
+	Receive = 0,
+	Transmit = 1,
+};
+
+namespace path {
+
+constexpr FrequencyRange band_low {
+	.min = 0,
+	.max = 2150000000,
+};
+
+constexpr FrequencyRange band_high {
+	.min = 2750000000,
+	.max = 7250000000,
+};
+
+constexpr FrequencyRange band_mid {
+	.min = band_low.max,
+	.max = band_high.min,
+};
+
+enum class Band {
+	/* Zero-based, used as index into frequency_bands table */
+	Low = 0,
+	Mid = 1,
+	High = 2,
+};
+
+class Path {
+public:
+	void init();
+
+	void set_direction(const Direction direction);
+	void set_band(const Band band);
+	void set_rf_amp(const bool rf_amp);
+
+private:
+	Direction direction { Direction::Receive };
+	Band band { Band::Mid };
+	bool rf_amp { false };
+
+	void update();
+};
+
+} /* path */
+
+constexpr FrequencyRange tuning_range {
+	.min = path::band_low.min,
+	.max = path::band_high.max,
+};
+
+} /* rf */
+
+#endif/*__RF_PATH_H__*/