Add interface2

interface2/firmware/include/indicators.h

@@ -0,0 +1,43 @@
+// Copyright (c) 2020, Andrew Kay
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+#pragma once
+
+enum IndicatorsStatus {
+    INDICATORS_STATUS_UNKNOWN,
+    INDICATORS_STATUS_CONFIGURING,
+    INDICATORS_STATUS_RUNNING
+};
+
+class Indicators
+{
+public:
+    Indicators();
+
+    void init();
+
+    void setStatus(IndicatorsStatus status);
+
+    void tx();
+    void rx();
+    void error();
+
+    void update();
+
+private:
+    volatile IndicatorsStatus _status;
+    volatile uint8_t _txState;
+    volatile uint8_t _rxState;
+    volatile uint8_t _errorState;
+};