Rename signalk_position to signalk_types

Implement ENUVector and AttitudeVector and provide serializers for them.

src/sensesp/signalk/signalk_types.cpp

@@ -0,0 +1,46 @@
+
+#include "signalk_types.h"
+
+namespace sensesp {
+
+/**
+ * @brief Template specialization for SKOutputPosition::as_signalk_json()
+ *
+ * This specialization allows `Position` objects to be output as Signal K
+ * deltas.
+ *
+ * @tparam
+ * @return String
+ */
+template <>
+void SKOutput<Position>::as_signalk_json(JsonDocument& doc) {
+  doc["path"] = this->get_sk_path();
+  JsonObject value = doc["value"].to<JsonObject>();
+  value["latitude"] = output.latitude;
+  value["longitude"] = output.longitude;
+  if (output.altitude != kPositionInvalidAltitude) {
+    value["altitude"] = output.altitude;
+  }
+}
+
+template <>
+void SKOutput<ENUVector>::as_signalk_json(JsonDocument& doc) {
+  doc["path"] = this->get_sk_path();
+  JsonObject value = doc["value"].to<JsonObject>();
+  value["east"] = output.east;
+  value["north"] = output.north;
+  if (output.up != kPositionInvalidAltitude) {
+    value["up"] = output.up;
+  }
+}
+
+template <>
+void SKOutput<AttitudeVector>::as_signalk_json(JsonDocument& doc) {
+  doc["path"] = this->get_sk_path();
+  JsonObject value = doc["value"].to<JsonObject>();
+  value["roll"] = output.roll;
+  value["pitch"] = output.pitch;
+  value["yaw"] = output.yaw;
+}
+
+}  // namespace sensesp

src/sensesp/signalk/signalk_types.h

@@ -0,0 +1,26 @@
+#ifndef SENSESP_SRC_SENSESP_SIGNALK_SIGNALK_TYPES_H_
+#define SENSESP_SRC_SENSESP_SIGNALK_SIGNALK_TYPES_H_
+
+#include <vector>
+
+#include "sensesp/signalk/signalk_output.h"
+#include "sensesp/types/position.h"
+
+namespace sensesp {
+
+template <>
+void SKOutput<Position>::as_signalk_json(JsonDocument& doc);
+
+template <>
+void SKOutput<ENUVector>::as_signalk_json(JsonDocument& doc);
+
+template <>
+void SKOutput<AttitudeVector>::as_signalk_json(JsonDocument& doc);
+
+typedef SKOutput<Position> SKOutputPosition;
+typedef SKOutput<ENUVector> SKOutputENUVector;
+typedef SKOutput<AttitudeVector> SKOutputAttitudeVector;
+
+}  // namespace sensesp
+
+#endif