添加反射率定标

.pio/libdeps/esp32-s3-devkitc-1/SolarCalculator/examples/SunriseSunsetAltitude/SunriseSunsetAltitude.ino

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+//======================================================================================================================
+// SolarCalculator Library for Arduino example sketch: SunriseSunsetAltitude.ino
+//
+// Calculate the rise and set times at a height above the level of the horizon.
+//
+// Tested with Arduino IDE 1.8.19 and Arduino Uno
+//======================================================================================================================
+
+#include <SolarCalculator.h>
+
+void setup()
+{
+  Serial.begin(9600);
+
+  // Date
+  int year = 2022;
+  int month = 1;
+  int day = 1;
+
+  // Location
+  double latitude = 45.5034;
+  double longitude = -73.5869;
+  int utc_offset = -5;
+
+  double transit, sunrise, sunset;
+
+  // From the Explanatory Supplement to the Astronomical Almanac (1992), p. 484
+  // Sunrise or sunset at a height above the level of the horizon occurs when the Sun's altitude is approximately:
+
+  int height = 200;  // in meters
+  double sun_altitude = SUNRISESET_STD_ALTITUDE - 0.0353 * sqrt(height);
+
+  // Calculate the times of sunrise, transit, and sunset, in hours (UTC)
+  calcSunriseSunset(year, month, day, latitude, longitude, transit, sunrise, sunset, sun_altitude);
+
+  // Print results
+  char str[6];
+  Serial.println(hoursToString(sunrise + utc_offset, str));
+  Serial.println(hoursToString(transit + utc_offset, str));
+  Serial.println(hoursToString(sunset + utc_offset, str));
+}
+
+void loop()
+{
+}
+
+// Rounded HH:mm format
+char * hoursToString(double h, char *str)
+{
+  int m = int(round(h * 60));
+  int hr = (m / 60) % 24;
+  int mn = m % 60;
+
+  str[0] = (hr / 10) % 10 + '0';
+  str[1] = (hr % 10) + '0';
+  str[2] = ':';
+  str[3] = (mn / 10) % 10 + '0';
+  str[4] = (mn % 10) + '0';
+  str[5] = '\0';
+  return str;
+}