1 files changed, 50 insertions, 0 deletions
diff --git a/src/common/GPIO/analog.h b/src/common/GPIO/analog.h
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+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016 Matthias P. Braendli, Maximilien Cuony
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+*/
+
+#pragma once
+#include <stdint.h>
+
+void analog_init(void);
+
+/* Measure the 12V supply voltage, in 0.5V increments.
+ * Returns 0.0f in case of error
+ *
+ * Warning, do not run from interrupt context!
+ */
+float analog_measure_12v(void);
+
+/* Measure SWR, and return voltages in mV.
+ * Returns 0 in case of error, 1 in case of success
+ *
+ * Warning, do not run from interrupt context!
+ */
+int analog_measure_swr(int *forward_mv, int* reflected_mv);
+
+/* Keep an average of measurements, and decide if the repeater should enter
+ * QRP. Returns 1 if low power must be activated
+ *
+ * Warning, do not run from interrupt context!
+ */
+int analog_supply_too_low(void);
+