Shearwater: Add Sensor Calibration Info.

Add the calibration values for ppO2 sonsors in CCR mode as extra info
fields.

Signed-off-by: Michael Keller <github@ike.ch>

src/shearwater_predator_parser.c

@@ -727,25 +727,31 @@ shearwater_predator_parser_cache (shearwater_predator_parser_t *parser)
 	dc_field_add_string_fmt(&parser->cache, "Logversion", "%d%s", logversion, pnf ? "(PNF)" : "");
 
 	// Cache sensor calibration for later use
-	unsigned int nsensors = 0;
 	unsigned int base = parser->opening[3] + (pnf ? 6 : 86);
+	parser->calibrated = data[base];
+
 	for (size_t i = 0; i < 3; ++i) {
-		unsigned int calibration = array_uint16_be(data + base + 1 + i * 2);
-		parser->calibration[i] = calibration / 100000.0;
-		if (parser->model == PREDATOR) {
-			// The Predator expects the mV output of the cells to be
-			// within 30mV to 70mV in 100% O2 at 1 atmosphere. If the
-			// calibration value is scaled with a factor 2.2, then the
-			// sensors lines up and matches the average.
-			parser->calibration[i] *= 2.2;
-		}
-		if (data[base] & (1 << i)) {
-			nsensors++;
+		if (parser->calibrated & (1 << i)) {
+			unsigned int calibration = array_uint16_be(data + base + 1 + i * 2);
+			parser->calibration[i] = calibration / 100000.0;
+			if (parser->model == PREDATOR) {
+				// The Predator expects the mV output of the cells to be
+				// within 30mV to 70mV in 100% O2 at 1 atmosphere. If the
+				// calibration value is scaled with a factor 2.2, then the
+				// sensors lines up and matches the average.
+				parser->calibration[i] *= 2.2;
+			}
+
+			static const char *name[] = {
+				"Sensor 1 calibration [bar / V]",
+				"Sensor 2 calibration [bar / V]",
+				"Sensor 3 calibration [bar / V]",
+			};
+			dc_field_add_string_fmt(&parser->cache, name[i], "%.2f", parser->calibration[i] * 1000);
+
 		}
 	}
 
-	parser->calibrated = data[base];
-
 	// Get the dive mode from the header (if available).
 	if (logversion >= 8) {
 		divemode = data[parser->opening[4] + (pnf ? 1 : 112)];