From a2c7cca67a02bc24147726d0d7d98b34c7a94f60 Mon Sep 17 00:00:00 2001 From: Piyush Shah Date: Tue, 9 Sep 2025 15:56:34 +0530 Subject: [PATCH 1/4] esp_daylight: Add a new component for NOAA-based sunrise/sunset calculation --- esp_daylight/CHANGELOG.md | 22 +++ esp_daylight/CMakeLists.txt | 3 + esp_daylight/LICENSE | 201 ++++++++++++++++++++++++ esp_daylight/README.md | 135 ++++++++++++++++ esp_daylight/idf_component.yml | 6 + esp_daylight/include/esp_daylight.h | 94 +++++++++++ esp_daylight/src/esp_daylight.c | 231 ++++++++++++++++++++++++++++ 7 files changed, 692 insertions(+) create mode 100644 esp_daylight/CHANGELOG.md create mode 100644 esp_daylight/CMakeLists.txt create mode 100644 esp_daylight/LICENSE create mode 100644 esp_daylight/README.md create mode 100644 esp_daylight/idf_component.yml create mode 100644 esp_daylight/include/esp_daylight.h create mode 100644 esp_daylight/src/esp_daylight.c diff --git a/esp_daylight/CHANGELOG.md b/esp_daylight/CHANGELOG.md new file mode 100644 index 0000000000..6fdff8b094 --- /dev/null +++ b/esp_daylight/CHANGELOG.md @@ -0,0 +1,22 @@ +# Changelog + +All notable changes to the ESP Daylight component will be documented in this file. + +The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), +and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html). + +## [1.0.1] - 2025-09-10 + +Moved from esp-rainmaker to idf-extra-components + +## Added +- Unit test suite and example application + +## [1.0.0] - 2025-09-09 + +### Added +- Initial release of ESP Daylight component +- NOAA Solar Calculator implementation for sunrise/sunset calculations. + Reference: https://gml.noaa.gov/grad/solcalc/ +- Support for global locations including polar regions +- Time offset functionality for scheduling applications diff --git a/esp_daylight/CMakeLists.txt b/esp_daylight/CMakeLists.txt new file mode 100644 index 0000000000..0b1cd60d5f --- /dev/null +++ b/esp_daylight/CMakeLists.txt @@ -0,0 +1,3 @@ +idf_component_register(SRCS "src/esp_daylight.c" + INCLUDE_DIRS "include" + REQUIRES "esp_common") diff --git a/esp_daylight/LICENSE b/esp_daylight/LICENSE new file mode 100644 index 0000000000..6f756351aa --- /dev/null +++ b/esp_daylight/LICENSE @@ -0,0 +1,201 @@ + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. 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This component provides accurate solar calculations for any location and date, designed for integration with ESP-IDF projects. + +## Features + +- **Accurate NOAA calculations**: Uses proven NOAA Solar Calculator equations +- **Global coverage**: Works for any location worldwide (handles polar regions) +- **Lightweight**: Minimal memory footprint and dependencies +- **ESP-IDF ready**: Designed for embedded systems +- **Time zone agnostic**: Returns UTC timestamps for easy conversion + +## API Reference + +### Core Functions + +```c +bool esp_daylight_calc_sunrise_sunset_utc(int year, int month, int day, + double latitude, double longitude, + time_t *sunrise_utc, time_t *sunset_utc); +``` + +Calculate sunrise and sunset times for a specific date and location. + +**Parameters:** +- `year`: Year (e.g., 2024) +- `month`: Month (1-12) +- `day`: Day of month (1-31) +- `latitude`: Latitude in decimal degrees (-90 to +90, positive North) +- `longitude`: Longitude in decimal degrees (-180 to +180, positive East) +- `sunrise_utc`: Output sunrise time as UTC timestamp +- `sunset_utc`: Output sunset time as UTC timestamp + +**Returns:** `true` on success, `false` if sun doesn't rise/set (polar regions) + +### Helper Functions + +```c +time_t esp_daylight_apply_offset(time_t base_time, int offset_minutes); +``` + +Apply time offset to a base timestamp. + +```c +bool esp_daylight_get_sunrise_today(const esp_daylight_location_t *location, time_t *sunrise_utc); +bool esp_daylight_get_sunset_today(const esp_daylight_location_t *location, time_t *sunset_utc); +``` + +Get sunrise/sunset for current date at given location. + +## Usage Example + +```c +#include "esp_daylight.h" + +void calculate_solar_times(void) { + time_t sunrise_utc, sunset_utc; + + // Calculate for Pune, India on August 29, 2025 + bool ok = esp_daylight_calc_sunrise_sunset_utc( + 2025, 8, 29, // Date + 18.5204, 73.8567, // Pune coordinates + &sunrise_utc, &sunset_utc + ); + + if (ok) { + // Apply offset: 30 minutes before sunset + time_t light_on_time = esp_daylight_apply_offset(sunset_utc, -30); + + struct tm *tm_info = gmtime(&light_on_time); + printf("Turn on light at: %02d:%02d:%02d UTC\n", + tm_info->tm_hour, tm_info->tm_min, tm_info->tm_sec); + } else { + printf("No sunrise/sunset for this location and date\n"); + } +} +``` + +## Location Coordinates + +### Popular Cities + +| City | Latitude | Longitude | +|------|----------|-----------| +| New York | 40.7128 | -74.0060 | +| London | 51.5074 | -0.1278 | +| Pune | 18.5204 | 73.8567 | +| Shanghai | 31.2304 | 121.4737 | +| Sydney | -33.8688 | 151.2093 | + +### Coordinate Format + +- **Latitude**: -90 to +90 degrees (positive = North, negative = South) +- **Longitude**: -180 to +180 degrees (positive = East, negative = West) + +## Integration with ESP Schedule + +This component integrates seamlessly with ESP Schedule for solar-based scheduling: + +```c +esp_schedule_config_t schedule_config = { + .name = "sunset_light", + .trigger.type = ESP_SCHEDULE_TYPE_SUNSET, + .trigger.solar.latitude = 18.5204, + .trigger.solar.longitude = 73.8567, + .trigger.solar.offset_minutes = -30, // 30 min before sunset + .trigger.solar.repeat_days = ESP_SCHEDULE_DAY_EVERYDAY, + .trigger_cb = light_control_callback, +}; +``` + +## Algorithm Details + +The component implements the NOAA Solar Calculator algorithm with: + +- **Zenith angle**: 90.833° (accounts for atmospheric refraction) +- **Precision**: Typically accurate to within 1-2 minutes +- **Edge cases**: Handles polar day/night conditions gracefully + +## Dependencies + +- ESP-IDF (esp_common) +- Standard C math library (`-lm`) + +## Component Structure + +``` +esp_daylight/ +├── CMakeLists.txt +├── include/ +│ └── esp_daylight.h +├── src/ +│ └── esp_daylight.c +└── README.md +``` diff --git a/esp_daylight/idf_component.yml b/esp_daylight/idf_component.yml new file mode 100644 index 0000000000..520db13307 --- /dev/null +++ b/esp_daylight/idf_component.yml @@ -0,0 +1,6 @@ +## IDF Component Manager Manifest File +version: "1.0.1" +description: NOAA-based sunrise/sunset calculation library for ESP-IDF +url: https://github.com/espressif/idf-extra-components/tree/master/esp_daylight +dependencies: + idf: ">=5.1" diff --git a/esp_daylight/include/esp_daylight.h b/esp_daylight/include/esp_daylight.h new file mode 100644 index 0000000000..2d0927ff47 --- /dev/null +++ b/esp_daylight/include/esp_daylight.h @@ -0,0 +1,94 @@ +/* + * SPDX-FileCopyrightText: 2025 Espressif Systems (Shanghai) CO LTD + * + * SPDX-License-Identifier: Apache-2.0 + */ + +#pragma once + +#ifdef __cplusplus +extern "C" { +#endif + +#include +#include +#include + +/** + * @brief Location information for daylight calculations + */ +typedef struct { + double latitude; /**< Latitude in decimal degrees (-90 to +90, positive North) */ + double longitude; /**< Longitude in decimal degrees (-180 to +180, positive East) */ + char name[32]; /**< Optional location name for reference */ +} esp_daylight_location_t; + +/** + * @brief Calculate sunrise and sunset times for a given date and location + * + * Uses NOAA Solar Calculator equations with zenith angle of 90.833° for + * geometric sunrise/sunset including atmospheric refraction. + * + * @param[in] year Year (e.g., 2024) + * @param[in] month Month (1-12) + * @param[in] day Day of month (1-31) + * @param[in] latitude Latitude in decimal degrees (-90 to +90, positive North) + * @param[in] longitude Longitude in decimal degrees (-180 to +180, positive East) + * @param[out] sunrise_utc Sunrise time as UTC timestamp (seconds since epoch) + * @param[out] sunset_utc Sunset time as UTC timestamp (seconds since epoch) + * + * @return true on success, false if sun doesn't rise/set (polar day/night) + */ +bool esp_daylight_calc_sunrise_sunset_utc(int year, int month, int day, + double latitude, double longitude, + time_t *sunrise_utc, time_t *sunset_utc); + +/** + * @brief Calculate sunrise and sunset times using location struct + * + * @param[in] year Year (e.g., 2024) + * @param[in] month Month (1-12) + * @param[in] day Day of month (1-31) + * @param[in] location Location information + * @param[out] sunrise_utc Sunrise time as UTC timestamp + * @param[out] sunset_utc Sunset time as UTC timestamp + * + * @return true on success, false if sun doesn't rise/set (polar day/night) + */ +bool esp_daylight_calc_sunrise_sunset_location(int year, int month, int day, + const esp_daylight_location_t *location, + time_t *sunrise_utc, time_t *sunset_utc); + +/** + * @brief Apply time offset to a base timestamp + * + * @param[in] base_time Base timestamp in seconds since epoch + * @param[in] offset_minutes Offset in minutes (positive = after, negative = before) + * + * @return Adjusted timestamp + */ +time_t esp_daylight_apply_offset(time_t base_time, int offset_minutes); + +/** + * @brief Get sunrise time for current date at given location + * + * @param[in] location Location information + * @param[out] sunrise_utc Sunrise time as UTC timestamp + * + * @return true on success, false on failure + */ +bool esp_daylight_get_sunrise_today(const esp_daylight_location_t *location, time_t *sunrise_utc); + +/** + * @brief Get sunset time for current date at given location + * + * @param[in] location Location information + * @param[out] sunset_utc Sunset time as UTC timestamp + * + * @return true on success, false on failure + */ +bool esp_daylight_get_sunset_today(const esp_daylight_location_t *location, time_t *sunset_utc); + +#ifdef __cplusplus +} +#endif diff --git a/esp_daylight/src/esp_daylight.c b/esp_daylight/src/esp_daylight.c new file mode 100644 index 0000000000..2748b61382 --- /dev/null +++ b/esp_daylight/src/esp_daylight.c @@ -0,0 +1,231 @@ +/* + * SPDX-FileCopyrightText: 2025 Espressif Systems (Shanghai) CO LTD + * + * SPDX-License-Identifier: Apache-2.0 + */ + +#include +#include +#include +#include "esp_daylight.h" + +#ifndef M_PI +#define M_PI 3.14159265358979323846 +#endif + +/* + * NOAA Solar Calculator Implementation + * Reliable sunrise/sunset (UTC) calculations using NOAA equations + * Reference: https://gml.noaa.gov/grad/solcalc/ + */ + +/** + * @brief Howard Hinnant's days_from_civil algorithm (public domain) + * Convert civil date to days since Unix epoch + */ +static int64_t days_from_civil(int y, unsigned m, unsigned d) +{ + y -= m <= 2; + const int era = (y >= 0 ? y : y - 399) / 400; + const unsigned yoe = (unsigned)(y - era * 400); // [0, 399] + const unsigned doy = (153 * (m + (m > 2 ? -3 : 9)) + 2) / 5 + d - 1; // [0, 365] + const unsigned doe = yoe * 365 + yoe / 4 - yoe / 100 + yoe / 400 + doy; // [0, 146096] + return era * 146097 + (int)doe - 719468; // days since 1970-01-01 +} + +/** + * @brief Get UTC midnight timestamp for given date + */ +static time_t utc_midnight_epoch(int year, int month, int day) +{ + return (time_t)(days_from_civil(year, (unsigned)month, (unsigned)day) * 86400LL); +} + +/** + * @brief Clamp value between min and max + */ +static double clamp(double v, double lo, double hi) +{ + return v < lo ? lo : (v > hi ? hi : v); +} + +/** + * @brief Calculate fractional year gamma in radians + * Used for NOAA solar equations + */ +static double fractional_year_gamma(int year, int month, int day) +{ + // Day-of-year N (1..365/366) + static const int mdays[] = {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}; + int ly = ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0)); + int N = day; + for (int i = 1; i < month; i++) { + N += mdays[i]; + } + if (ly && month > 2) { + N += 1; + } + + // NOAA form with hour≈0 -> gamma ~= 2π/365 * (N-1 - 12/24) + return 2.0 * M_PI / (ly ? 366.0 : 365.0) * ((double)N - 1.0 - 0.5); +} + +/** + * @brief Calculate Equation of Time in minutes + * NOAA polynomial approximation + */ +static double equation_of_time_min(double gamma) +{ + double s = sin(gamma); + double c = cos(gamma); + double s2 = sin(2 * gamma); + double c2 = cos(2 * gamma); + + // 229.18 * (0.000075 + 0.001868*cosγ - 0.032077*sinγ - 0.014615*cos2γ - 0.040849*sin2γ) + return 229.18 * (0.000075 + 0.001868 * c - 0.032077 * s - 0.014615 * c2 - 0.040849 * s2); +} + +/** + * @brief Calculate solar declination in radians + * NOAA polynomial approximation + */ +static double solar_declination_rad(double gamma) +{ + double s = sin(gamma); + double c = cos(gamma); + double s2 = sin(2 * gamma); + double c2 = cos(2 * gamma); + double s3 = sin(3 * gamma); + double c3 = cos(3 * gamma); + + // δ = 0.006918 - 0.399912 cosγ + 0.070257 sinγ - 0.006758 cos2γ + // + 0.000907 sin2γ - 0.002697 cos3γ + 0.00148 sin3γ + return 0.006918 - 0.399912 * c + 0.070257 * s - 0.006758 * c2 + + 0.000907 * s2 - 0.002697 * c3 + 0.001480 * s3; +} + +bool esp_daylight_calc_sunrise_sunset_utc(int year, int month, int day, + double latitude, double longitude, + time_t *sunrise_utc, time_t *sunset_utc) +{ + // Constants + const double ZENITH_DEG = 90.833; // geometric zenith for sunrise/sunset + const double Z = ZENITH_DEG * (M_PI / 180.0); + const double phi = latitude * (M_PI / 180.0); + + // 1) Day parameters + double gamma = fractional_year_gamma(year, month, day); + double EoT_min = equation_of_time_min(gamma); + double decl = solar_declination_rad(gamma); + + // 2) Hour angle at sunrise/sunset (rad) + // cos(H0) = (cos(Z) - sin(phi) sin(dec)) / (cos(phi) cos(dec)) + double cosH0 = (cos(Z) - sin(phi) * sin(decl)) / (cos(phi) * cos(decl)); + + if (cosH0 < -1.0) { + // Sun above horizon all day (midnight sun) -> no distinct sunrise/sunset + return false; + } + if (cosH0 > 1.0) { + // Sun below horizon all day (polar night) + return false; + } + + double H0 = acos(clamp(cosH0, -1.0, 1.0)); // radians + double H0_deg = H0 * 180.0 / M_PI; + + // 3) Solar noon in UTC minutes + // NOAA: SolarNoon_UTC (minutes) = 720 - 4*longitude - EoT + // (longitude positive east, negative west) + double solar_noon_min_utc = 720.0 - 4.0 * longitude - EoT_min; + + // 4) Sunrise/Sunset UTC minutes + // Daylength (minutes) = 8 * H0 (deg) [since 1 deg hour angle = 4 minutes] + double delta_min = 4.0 * H0_deg; // minutes from noon to event + double sunrise_min_utc = solar_noon_min_utc - delta_min; + double sunset_min_utc = solar_noon_min_utc + delta_min; + + // Normalize to [0,1440) to stay within the same civil day in UTC. + // (Edge cases near poles can roll into prev/next day; we keep them bounded.) + while (sunrise_min_utc < 0) { + sunrise_min_utc += 1440.0; + } + while (sunrise_min_utc >= 1440.0) { + sunrise_min_utc -= 1440.0; + } + while (sunset_min_utc < 0) { + sunset_min_utc += 1440.0; + } + while (sunset_min_utc >= 1440.0) { + sunset_min_utc -= 1440.0; + } + + // 5) Convert to epoch seconds (UTC) + time_t midnight_utc = utc_midnight_epoch(year, month, day); + if (sunrise_utc) { + *sunrise_utc = midnight_utc + (time_t)llround(sunrise_min_utc * 60.0); + } + if (sunset_utc) { + *sunset_utc = midnight_utc + (time_t)llround(sunset_min_utc * 60.0); + } + + return true; +} + +bool esp_daylight_calc_sunrise_sunset_location(int year, int month, int day, + const esp_daylight_location_t *location, + time_t *sunrise_utc, time_t *sunset_utc) +{ + if (!location) { + return false; + } + + return esp_daylight_calc_sunrise_sunset_utc(year, month, day, + location->latitude, location->longitude, + sunrise_utc, sunset_utc); +} + +time_t esp_daylight_apply_offset(time_t base_time, int offset_minutes) +{ + return base_time + (offset_minutes * 60); +} + +bool esp_daylight_get_sunrise_today(const esp_daylight_location_t *location, time_t *sunrise_utc) +{ + if (!location || !sunrise_utc) { + return false; + } + + time_t now; + time(&now); + struct tm *tm_info = gmtime(&now); + + return esp_daylight_calc_sunrise_sunset_location( + tm_info->tm_year + 1900, + tm_info->tm_mon + 1, + tm_info->tm_mday, + location, + sunrise_utc, + NULL + ); +} + +bool esp_daylight_get_sunset_today(const esp_daylight_location_t *location, time_t *sunset_utc) +{ + if (!location || !sunset_utc) { + return false; + } + + time_t now; + time(&now); + struct tm *tm_info = gmtime(&now); + + return esp_daylight_calc_sunrise_sunset_location( + tm_info->tm_year + 1900, + tm_info->tm_mon + 1, + tm_info->tm_mday, + location, + NULL, + sunset_utc + ); +} From 11d1d0f883ee2d86b89bf89ccd47ae5add067a9c Mon Sep 17 00:00:00 2001 From: Piyush Shah Date: Tue, 9 Sep 2025 15:57:01 +0530 Subject: [PATCH 2/4] esp_daylight: Add component in github actions --- .github/ISSUE_TEMPLATE/bug-report.yml | 1 + .github/workflows/upload_component.yml | 1 + 2 files changed, 2 insertions(+) diff --git a/.github/ISSUE_TEMPLATE/bug-report.yml b/.github/ISSUE_TEMPLATE/bug-report.yml index 3ebddcdc95..2ce6336e2d 100644 --- a/.github/ISSUE_TEMPLATE/bug-report.yml +++ b/.github/ISSUE_TEMPLATE/bug-report.yml @@ -29,6 +29,7 @@ body: - coremark - dhara - eigen + - esp_daylight - esp_delta_ota - esp_encrypted_img - esp_gcov diff --git a/.github/workflows/upload_component.yml b/.github/workflows/upload_component.yml index 3be1932f83..d149d64eec 100644 --- a/.github/workflows/upload_component.yml +++ b/.github/workflows/upload_component.yml @@ -41,6 +41,7 @@ jobs: coremark; dhara; eigen; + esp_daylight; esp_delta_ota; esp_encrypted_img; esp_gcov; From 09d7cc119d8fef60cc9a5c7557b9fe5c6e222159 Mon Sep 17 00:00:00 2001 From: Piyush Shah Date: Tue, 9 Sep 2025 19:44:56 +0530 Subject: [PATCH 3/4] esp_daylight: Add a demo example --- .../examples/get_started/CMakeLists.txt | 6 + esp_daylight/examples/get_started/README.md | 130 ++++++++ .../examples/get_started/main/CMakeLists.txt | 3 + .../main/esp_daylight_example_main.c | 306 ++++++++++++++++++ .../get_started/main/idf_component.yml | 4 + .../pytest_esp_daylight_example.py | 42 +++ 6 files changed, 491 insertions(+) create mode 100644 esp_daylight/examples/get_started/CMakeLists.txt create mode 100644 esp_daylight/examples/get_started/README.md create mode 100644 esp_daylight/examples/get_started/main/CMakeLists.txt create mode 100644 esp_daylight/examples/get_started/main/esp_daylight_example_main.c create mode 100644 esp_daylight/examples/get_started/main/idf_component.yml create mode 100644 esp_daylight/examples/get_started/pytest_esp_daylight_example.py diff --git a/esp_daylight/examples/get_started/CMakeLists.txt b/esp_daylight/examples/get_started/CMakeLists.txt new file mode 100644 index 0000000000..d27a7b7dd9 --- /dev/null +++ b/esp_daylight/examples/get_started/CMakeLists.txt @@ -0,0 +1,6 @@ +cmake_minimum_required(VERSION 3.16) + +include($ENV{IDF_PATH}/tools/cmake/project.cmake) +set(COMPONENTS main) +project(esp_daylight_example) + diff --git a/esp_daylight/examples/get_started/README.md b/esp_daylight/examples/get_started/README.md new file mode 100644 index 0000000000..2e5730a9da --- /dev/null +++ b/esp_daylight/examples/get_started/README.md @@ -0,0 +1,130 @@ +# ESP Daylight Example + +This example demonstrates how to use the ESP Daylight component to calculate sunrise and sunset times for various locations around the world. + +## What This Example Does + +The example showcases several key features of the ESP Daylight component: + +1. **Basic Calculations**: Calculate sunrise/sunset for multiple cities worldwide +2. **Seasonal Variations**: Show how daylight hours change throughout the year +3. **Time Offsets**: Demonstrate scheduling events relative to sunrise/sunset +4. **Polar Regions**: Handle special cases like midnight sun and polar night +5. **Practical Scheduling**: Real-world smart home lighting automation example + +## How to Use + +### Build and Flash + +Create the example project: + +```bash +idf.py create-project-from-example "espressif/esp_daylight:get_started" +cd get_started +idf.py set-target esp32 +idf.py build flash monitor +``` + +Alternatively, if you have the component source locally: + +```bash +cd examples/get_started +idf.py set-target esp32 +idf.py build flash monitor +``` + +### Expected Output + +The example will display sunrise and sunset times for various locations and demonstrate different use cases: + +``` +ESP Daylight Component Example +============================ + +=== Basic Sunrise/Sunset Calculation === +Calculating sunrise/sunset for 2025-08-29: + +New York, USA : Sunrise 10:12:34 UTC, Sunset 23:45:12 UTC (Daylight: 13:32) +London, UK : Sunrise 05:23:45 UTC, Sunset 19:34:56 UTC (Daylight: 14:11) +Pune, India : Sunrise 01:15:23 UTC, Sunset 13:02:45 UTC (Daylight: 11:47) +... +``` + +## Key Locations Tested + +The example includes calculations for these major cities: +- New York, USA (40.7128°N, 74.0060°W) +- London, UK (51.5074°N, 0.1278°W) +- Pune, India (18.5204°N, 73.8567°E) +- Shanghai, China (31.2304°N, 121.4737°E) +- Sydney, Australia (33.8688°S, 151.2093°E) +- Moscow, Russia (55.7558°N, 37.6173°E) +- Tokyo, Japan (35.6762°N, 139.6503°E) +- Rio de Janeiro, Brazil (22.9068°S, 43.1729°W) + +## Customization + +### Change Location + +Modify the coordinates in the code to match your location: + +```c +esp_daylight_location_t my_location = { + .latitude = YOUR_LATITUDE, + .longitude = YOUR_LONGITUDE, + .name = "My Location" +}; +``` + +### Change Date + +Update the date parameters in the calculation functions: + +```c +int year = 2025, month = 8, day = 29; // Change to your desired date +``` + +### Add Time Zone Support + +The component returns UTC timestamps. To display local time, you can convert using standard C library functions or ESP-IDF timezone support. + +## Integration with Scheduling + +The example shows how to integrate with scheduling systems: + +```c +// Calculate sunset time +time_t sunset_utc; +esp_daylight_calc_sunrise_sunset_utc(2025, 8, 29, lat, lon, NULL, &sunset_utc); + +// Schedule event 30 minutes before sunset +time_t light_on_time = esp_daylight_apply_offset(sunset_utc, -30); + +// Use with ESP Schedule component (if available) +esp_schedule_config_t config = { + .trigger.type = ESP_SCHEDULE_TYPE_SUNSET, + .trigger.solar.latitude = lat, + .trigger.solar.longitude = lon, + .trigger.solar.offset_minutes = -30, + .callback = your_callback_function +}; +``` + +## Troubleshooting + +### No Output for Polar Regions + +If you see "No sunrise/sunset" messages, this is normal for polar regions during certain times of year (midnight sun in summer, polar night in winter). + +### Accuracy + +The calculations use NOAA Solar Calculator equations and are typically accurate to within 1-2 minutes for most locations. + +## Next Steps + +- Modify coordinates for your specific location +- Integrate with your IoT scheduling system +- Add timezone conversion for local time display +- Implement automated device control based on solar events +- Create recurring schedules that automatically adjust throughout the year + diff --git a/esp_daylight/examples/get_started/main/CMakeLists.txt b/esp_daylight/examples/get_started/main/CMakeLists.txt new file mode 100644 index 0000000000..f1d8d22afa --- /dev/null +++ b/esp_daylight/examples/get_started/main/CMakeLists.txt @@ -0,0 +1,3 @@ +idf_component_register(SRCS "esp_daylight_example_main.c" + INCLUDE_DIRS ".") + diff --git a/esp_daylight/examples/get_started/main/esp_daylight_example_main.c b/esp_daylight/examples/get_started/main/esp_daylight_example_main.c new file mode 100644 index 0000000000..d212fdc95e --- /dev/null +++ b/esp_daylight/examples/get_started/main/esp_daylight_example_main.c @@ -0,0 +1,306 @@ +/* + * SPDX-FileCopyrightText: 2025 Espressif Systems (Shanghai) CO LTD + * + * SPDX-License-Identifier: Unlicense OR CC0-1.0 + */ + +#include +#include +#include +#include "esp_log.h" +#include "esp_daylight.h" + +static const char *TAG = "esp_daylight_example"; + +/* Example locations around the world */ +static const esp_daylight_location_t example_locations[] = { + {40.7128, -74.0060, "New York, USA"}, + {51.5074, -0.1278, "London, UK"}, + {18.5204, 73.8567, "Pune, India"}, + {31.2304, 121.4737, "Shanghai, China"}, + {-33.8688, 151.2093, "Sydney, Australia"}, + {55.7558, 37.6173, "Moscow, Russia"}, + {35.6762, 139.6503, "Tokyo, Japan"}, + {-22.9068, -43.1729, "Rio de Janeiro, Brazil"} +}; + +static const size_t num_locations = sizeof(example_locations) / sizeof(example_locations[0]); + +/* Helper function to format time as string */ +static void format_time_string(time_t timestamp, char *buffer, size_t buffer_size) +{ + struct tm *time_info = gmtime(×tamp); + strftime(buffer, buffer_size, "%H:%M:%S UTC", time_info); +} + +/* Helper function to calculate and display daylight duration */ +static void display_daylight_info(const esp_daylight_location_t *location, + int year, int month, int day) +{ + time_t sunrise_utc, sunset_utc; + char sunrise_str[32], sunset_str[32]; + + bool result = esp_daylight_calc_sunrise_sunset_location( + year, month, day, location, &sunrise_utc, &sunset_utc + ); + + if (result) { + format_time_string(sunrise_utc, sunrise_str, sizeof(sunrise_str)); + format_time_string(sunset_utc, sunset_str, sizeof(sunset_str)); + + /* Calculate daylight duration */ + int daylight_seconds = (int)(sunset_utc - sunrise_utc); + + /* Handle day boundary crossing (sunset next day) */ + if (daylight_seconds < 0) { + daylight_seconds += 24 * 60 * 60; /* Add 24 hours */ + } + + int daylight_minutes = daylight_seconds / 60; + int hours = daylight_minutes / 60; + int minutes = daylight_minutes % 60; + + ESP_LOGI(TAG, "%-20s: Sunrise %s, Sunset %s (Daylight: %02d:%02d)", + location->name, sunrise_str, sunset_str, hours, minutes); + } else { + ESP_LOGI(TAG, "%-20s: No sunrise/sunset (polar day/night)", location->name); + } +} + +/* Demonstrate basic sunrise/sunset calculation */ +static void example_basic_calculation(void) +{ + ESP_LOGI(TAG, "=== Basic Sunrise/Sunset Calculation ==="); + + /* Calculate for today's date (example: August 29, 2025) */ + int year = 2025, month = 8, day = 29; + + ESP_LOGI(TAG, "Calculating sunrise/sunset for %04d-%02d-%02d:", year, month, day); + ESP_LOGI(TAG, ""); + + for (size_t i = 0; i < num_locations; i++) { + display_daylight_info(&example_locations[i], year, month, day); + } + ESP_LOGI(TAG, ""); +} + +/* Demonstrate seasonal variations */ +static void example_seasonal_variations(void) +{ + ESP_LOGI(TAG, "=== Seasonal Variations Example ==="); + + /* Use London as example location */ + const esp_daylight_location_t *london = &example_locations[1]; + + /* Test different seasons */ + struct { + int month, day; + const char *season; + } seasons[] = { + {3, 21, "Spring Equinox"}, + {6, 21, "Summer Solstice"}, + {9, 23, "Autumn Equinox"}, + {12, 21, "Winter Solstice"} + }; + + ESP_LOGI(TAG, "Seasonal daylight variations in %s (2025):", london->name); + ESP_LOGI(TAG, ""); + + for (size_t i = 0; i < 4; i++) { + ESP_LOGI(TAG, "%s (%02d-%02d):", seasons[i].season, seasons[i].month, seasons[i].day); + display_daylight_info(london, 2025, seasons[i].month, seasons[i].day); + ESP_LOGI(TAG, ""); + } +} + +/* Demonstrate time offset functionality */ +static void example_time_offsets(void) +{ + ESP_LOGI(TAG, "=== Time Offset Example ==="); + + /* Use Pune as example */ + const esp_daylight_location_t *pune = &example_locations[2]; + time_t sunrise_utc, sunset_utc; + + bool result = esp_daylight_calc_sunrise_sunset_location( + 2025, 8, 29, pune, &sunrise_utc, &sunset_utc + ); + + if (result) { + char time_str[32]; + + ESP_LOGI(TAG, "Original times for %s:", pune->name); + format_time_string(sunrise_utc, time_str, sizeof(time_str)); + ESP_LOGI(TAG, " Sunrise: %s", time_str); + format_time_string(sunset_utc, time_str, sizeof(time_str)); + ESP_LOGI(TAG, " Sunset: %s", time_str); + ESP_LOGI(TAG, ""); + + /* Apply various offsets */ + struct { + int offset_minutes; + const char *description; + } offsets[] = { + {-30, "30 minutes before sunset (lights on)"}, + {30, "30 minutes after sunrise (morning routine)"}, + {-60, "1 hour before sunset (dinner prep)"}, + {15, "15 minutes after sunrise (wake up)"} + }; + + ESP_LOGI(TAG, "Time offset examples:"); + for (size_t i = 0; i < 4; i++) { + time_t base_time = (i % 2 == 0) ? sunset_utc : sunrise_utc; + time_t offset_time = esp_daylight_apply_offset(base_time, offsets[i].offset_minutes); + + format_time_string(offset_time, time_str, sizeof(time_str)); + ESP_LOGI(TAG, " %s: %s", offsets[i].description, time_str); + } + ESP_LOGI(TAG, ""); + } +} + +/* Demonstrate polar region handling */ +static void example_polar_regions(void) +{ + ESP_LOGI(TAG, "=== Polar Region Example ==="); + + /* Test Arctic locations */ + esp_daylight_location_t arctic_locations[] = { + {71.0, 8.0, "Svalbard, Norway"}, + {80.0, 0.0, "High Arctic"}, + {-77.8, 166.7, "McMurdo, Antarctica"} + }; + + /* Test summer and winter conditions */ + struct { + int month, day; + const char *season; + } polar_seasons[] = { + {6, 21, "Summer (Midnight Sun)"}, + {12, 21, "Winter (Polar Night)"} + }; + + for (size_t s = 0; s < 2; s++) { + ESP_LOGI(TAG, "%s conditions:", polar_seasons[s].season); + + for (size_t i = 0; i < 3; i++) { + time_t sunrise_utc, sunset_utc; + bool result = esp_daylight_calc_sunrise_sunset_location( + 2025, polar_seasons[s].month, polar_seasons[s].day, + &arctic_locations[i], &sunrise_utc, &sunset_utc + ); + + if (result) { + char sunrise_str[32], sunset_str[32]; + format_time_string(sunrise_utc, sunrise_str, sizeof(sunrise_str)); + format_time_string(sunset_utc, sunset_str, sizeof(sunset_str)); + ESP_LOGI(TAG, " %-20s: Sunrise %s, Sunset %s", + arctic_locations[i].name, sunrise_str, sunset_str); + } else { + ESP_LOGI(TAG, " %-20s: No sunrise/sunset (24h %s)", + arctic_locations[i].name, + (polar_seasons[s].month == 6) ? "daylight" : "darkness"); + } + } + ESP_LOGI(TAG, ""); + } +} + +/* Demonstrate practical scheduling use case */ +static void example_practical_scheduling(void) +{ + ESP_LOGI(TAG, "=== Practical Scheduling Example ==="); + + /* Simulate a smart home lighting system */ + const esp_daylight_location_t *home_location = &example_locations[2]; /* Pune */ + time_t sunrise_utc, sunset_utc; + + bool result = esp_daylight_calc_sunrise_sunset_location( + 2025, 8, 29, home_location, &sunrise_utc, &sunset_utc + ); + + if (result) { + ESP_LOGI(TAG, "Smart Home Lighting Schedule for %s:", home_location->name); + ESP_LOGI(TAG, ""); + + /* Define lighting events */ + struct { + time_t event_time; + const char *action; + const char *description; + } lighting_events[6]; + + /* Calculate event times */ + lighting_events[0].event_time = esp_daylight_apply_offset(sunrise_utc, -30); + lighting_events[0].action = "Turn OFF"; + lighting_events[0].description = "30 min before sunrise"; + + lighting_events[1].event_time = sunrise_utc; + lighting_events[1].action = "Dim to 20%"; + lighting_events[1].description = "At sunrise"; + + lighting_events[2].event_time = esp_daylight_apply_offset(sunrise_utc, 60); + lighting_events[2].action = "Turn OFF"; + lighting_events[2].description = "1 hour after sunrise"; + + lighting_events[3].event_time = esp_daylight_apply_offset(sunset_utc, -45); + lighting_events[3].action = "Turn ON 50%"; + lighting_events[3].description = "45 min before sunset"; + + lighting_events[4].event_time = sunset_utc; + lighting_events[4].action = "Turn ON 80%"; + lighting_events[4].description = "At sunset"; + + lighting_events[5].event_time = esp_daylight_apply_offset(sunset_utc, 120); + lighting_events[5].action = "Turn ON 100%"; + lighting_events[5].description = "2 hours after sunset"; + + /* Display schedule */ + for (size_t i = 0; i < 6; i++) { + char time_str[32]; + format_time_string(lighting_events[i].event_time, time_str, sizeof(time_str)); + ESP_LOGI(TAG, " %s - %-15s (%s)", + time_str, lighting_events[i].action, lighting_events[i].description); + } + ESP_LOGI(TAG, ""); + + /* Show integration with scheduling system */ + ESP_LOGI(TAG, "Integration with ESP Schedule:"); + ESP_LOGI(TAG, " esp_schedule_config_t config = {"); + ESP_LOGI(TAG, " .name = \"smart_lighting\","); + ESP_LOGI(TAG, " .trigger.type = ESP_SCHEDULE_TYPE_SUNSET,"); + ESP_LOGI(TAG, " .trigger.solar.latitude = %.4f,", home_location->latitude); + ESP_LOGI(TAG, " .trigger.solar.longitude = %.4f,", home_location->longitude); + ESP_LOGI(TAG, " .trigger.solar.offset_minutes = -45,"); + ESP_LOGI(TAG, " .trigger_cb = lighting_control_callback,"); + ESP_LOGI(TAG, " .timestamp_cb = schedule_timestamp_callback"); + ESP_LOGI(TAG, " };"); + ESP_LOGI(TAG, " esp_schedule_handle_t handle = esp_schedule_create(&config);"); + ESP_LOGI(TAG, " esp_schedule_enable(handle);"); + ESP_LOGI(TAG, ""); + // Note: The above is a demonstration of how to configure the schedule. + // Actual integration would require the esp_schedule component and real callback implementations. + } +} + +void app_main(void) +{ + ESP_LOGI(TAG, "ESP Daylight Component Example"); + ESP_LOGI(TAG, "============================"); + ESP_LOGI(TAG, ""); + + /* Run all examples */ + example_basic_calculation(); + example_seasonal_variations(); + example_time_offsets(); + example_polar_regions(); + example_practical_scheduling(); + + ESP_LOGI(TAG, "Example completed successfully!"); + ESP_LOGI(TAG, ""); + ESP_LOGI(TAG, "Next steps:"); + ESP_LOGI(TAG, "- Modify coordinates to match your location"); + ESP_LOGI(TAG, "- Integrate with your scheduling system"); + ESP_LOGI(TAG, "- Add timezone conversion for local time display"); + ESP_LOGI(TAG, "- Implement automated lighting/irrigation control"); +} diff --git a/esp_daylight/examples/get_started/main/idf_component.yml b/esp_daylight/examples/get_started/main/idf_component.yml new file mode 100644 index 0000000000..b802f1f9af --- /dev/null +++ b/esp_daylight/examples/get_started/main/idf_component.yml @@ -0,0 +1,4 @@ +dependencies: + esp_daylight: + override_path: "../../.." + diff --git a/esp_daylight/examples/get_started/pytest_esp_daylight_example.py b/esp_daylight/examples/get_started/pytest_esp_daylight_example.py new file mode 100644 index 0000000000..00bfdded09 --- /dev/null +++ b/esp_daylight/examples/get_started/pytest_esp_daylight_example.py @@ -0,0 +1,42 @@ +#!/usr/bin/env python3 +# SPDX-FileCopyrightText: 2025 Espressif Systems (Shanghai) CO LTD +# SPDX-License-Identifier: Apache-2.0 + +import pytest +from pytest_embedded import Dut + + +@pytest.mark.generic +def test_esp_daylight_example(dut: Dut) -> None: + """ + Test esp_daylight example application + """ + # Wait for the example to start + dut.expect_exact('ESP Daylight Component Example') + + # Check that basic calculations are performed + dut.expect('Basic Sunrise/Sunset Calculation', timeout=30) + dut.expect('New York, USA', timeout=10) + dut.expect('London, UK', timeout=10) + dut.expect('Pune, India', timeout=10) + + # Check seasonal variations + dut.expect('Seasonal Variations Example', timeout=10) + dut.expect('Spring Equinox', timeout=10) + dut.expect('Summer Solstice', timeout=10) + + # Check time offsets + dut.expect('Time Offset Example', timeout=10) + dut.expect('30 minutes before sunset', timeout=10) + + # Check polar regions + dut.expect('Polar Region Example', timeout=10) + dut.expect('Midnight Sun', timeout=10) + + # Check practical scheduling + dut.expect('Practical Scheduling Example', timeout=10) + dut.expect('Smart Home Lighting Schedule', timeout=10) + + # Wait for completion + dut.expect('Example completed successfully!', timeout=30) + From c4eb4666f62dedf48714ec02718f1bbf9e02415b Mon Sep 17 00:00:00 2001 From: Piyush Shah Date: Tue, 9 Sep 2025 19:46:26 +0530 Subject: [PATCH 4/4] esp_daylight: Add unit tests --- .codespellrc | 2 +- .idf_build_apps.toml | 1 + esp_daylight/.build-test-rules.yml | 2 + esp_daylight/test_apps/CMakeLists.txt | 5 + esp_daylight/test_apps/main/CMakeLists.txt | 5 + esp_daylight/test_apps/main/idf_component.yml | 4 + esp_daylight/test_apps/main/test_app_main.c | 28 ++ .../test_apps/main/test_esp_daylight.c | 284 ++++++++++++++++++ esp_daylight/test_apps/pytest_esp_daylight.py | 15 + esp_daylight/test_apps/sdkconfig.defaults | 4 + 10 files changed, 349 insertions(+), 1 deletion(-) create mode 100644 esp_daylight/.build-test-rules.yml create mode 100644 esp_daylight/test_apps/CMakeLists.txt create mode 100644 esp_daylight/test_apps/main/CMakeLists.txt create mode 100644 esp_daylight/test_apps/main/idf_component.yml create mode 100644 esp_daylight/test_apps/main/test_app_main.c create mode 100644 esp_daylight/test_apps/main/test_esp_daylight.c create mode 100644 esp_daylight/test_apps/pytest_esp_daylight.py create mode 100644 esp_daylight/test_apps/sdkconfig.defaults diff --git a/.codespellrc b/.codespellrc index d738395727..05b35edc3b 100644 --- a/.codespellrc +++ b/.codespellrc @@ -1,4 +1,4 @@ [codespell] skip = build,COPYING.*,LICENSE,*.svg -ignore-words-list = ser,DOUT,dout,ans,nd,Dettached +ignore-words-list = ser,DOUT,dout,ans,nd,Dettached,IST write-changes = true diff --git a/.idf_build_apps.toml b/.idf_build_apps.toml index 140b580e17..954e004b05 100644 --- a/.idf_build_apps.toml +++ b/.idf_build_apps.toml @@ -7,6 +7,7 @@ manifest_file = [ "bdc_motor/.build-test-rules.yml", "ccomp_timer/.build-test-rules.yml", "coremark/.build-test-rules.yml", + "esp_daylight/.build-test-rules.yml", "esp_encrypted_img/.build-test-rules.yml", "esp_gcov/.build-test-rules.yml", "esp_jpeg/.build-test-rules.yml", diff --git a/esp_daylight/.build-test-rules.yml b/esp_daylight/.build-test-rules.yml new file mode 100644 index 0000000000..6d506b31ab --- /dev/null +++ b/esp_daylight/.build-test-rules.yml @@ -0,0 +1,2 @@ +# Build and test rules for esp_daylight component +# This file can be empty - the component will be built with default rules diff --git a/esp_daylight/test_apps/CMakeLists.txt b/esp_daylight/test_apps/CMakeLists.txt new file mode 100644 index 0000000000..e07f28c1ca --- /dev/null +++ b/esp_daylight/test_apps/CMakeLists.txt @@ -0,0 +1,5 @@ +cmake_minimum_required(VERSION 3.16) + +include($ENV{IDF_PATH}/tools/cmake/project.cmake) +project(esp_daylight_test) + diff --git a/esp_daylight/test_apps/main/CMakeLists.txt b/esp_daylight/test_apps/main/CMakeLists.txt new file mode 100644 index 0000000000..95d9f62b9f --- /dev/null +++ b/esp_daylight/test_apps/main/CMakeLists.txt @@ -0,0 +1,5 @@ +idf_component_register(SRCS "test_app_main.c" + "test_esp_daylight.c" + INCLUDE_DIRS "." + PRIV_REQUIRES unity esp_daylight + WHOLE_ARCHIVE) diff --git a/esp_daylight/test_apps/main/idf_component.yml b/esp_daylight/test_apps/main/idf_component.yml new file mode 100644 index 0000000000..138f7f7796 --- /dev/null +++ b/esp_daylight/test_apps/main/idf_component.yml @@ -0,0 +1,4 @@ +dependencies: + esp_daylight: + path: "../.." + diff --git a/esp_daylight/test_apps/main/test_app_main.c b/esp_daylight/test_apps/main/test_app_main.c new file mode 100644 index 0000000000..0c34bb5184 --- /dev/null +++ b/esp_daylight/test_apps/main/test_app_main.c @@ -0,0 +1,28 @@ +/* + * SPDX-FileCopyrightText: 2025 Espressif Systems (Shanghai) CO LTD + * + * SPDX-License-Identifier: Apache-2.0 + */ + +#include "unity.h" +#include "unity_test_runner.h" +#include "esp_heap_caps.h" +#include "esp_newlib.h" +#include "unity_test_utils_memory.h" + +void setUp(void) +{ + unity_utils_record_free_mem(); +} + +void tearDown(void) +{ + esp_reent_cleanup(); /* clean up some of the newlib's lazy allocations */ + unity_utils_evaluate_leaks_direct(50); +} + +void app_main(void) +{ + printf("Running esp_daylight component tests\n"); + unity_run_menu(); +} diff --git a/esp_daylight/test_apps/main/test_esp_daylight.c b/esp_daylight/test_apps/main/test_esp_daylight.c new file mode 100644 index 0000000000..3b644e6444 --- /dev/null +++ b/esp_daylight/test_apps/main/test_esp_daylight.c @@ -0,0 +1,284 @@ +/* + * SPDX-FileCopyrightText: 2025 Espressif Systems (Shanghai) CO LTD + * + * SPDX-License-Identifier: Apache-2.0 + */ + +#include +#include +#include "unity.h" +#include "esp_log.h" +#include "esp_daylight.h" + +static const char *TAG = "esp_daylight_test"; + +/* Test tolerance for time calculations (in seconds) */ +#define TIME_TOLERANCE_SEC 120 /* 2 minutes tolerance for sunrise/sunset calculations */ + +/* Helper function to check if two timestamps are within tolerance */ +__attribute__((unused)) static bool time_within_tolerance(time_t actual, time_t expected, int tolerance_sec) +{ + int diff = abs((int)(actual - expected)); + return diff <= tolerance_sec; +} + +TEST_CASE("Test basic sunrise/sunset calculation", "[esp_daylight]") +{ + time_t sunrise_utc, sunset_utc; + bool result; + + /* Test for Pune, India on August 29, 2025 */ + result = esp_daylight_calc_sunrise_sunset_utc( + 2025, 8, 29, /* Date */ + 18.5204, 73.8567, /* Pune coordinates */ + &sunrise_utc, &sunset_utc + ); + + TEST_ASSERT_TRUE(result); + TEST_ASSERT_NOT_EQUAL(0, sunrise_utc); + TEST_ASSERT_NOT_EQUAL(0, sunset_utc); + /* Note: Don't assert sunset > sunrise due to potential day boundary crossing in UTC */ + + /* Convert to readable format for logging */ + struct tm sunrise_tm_buf, sunset_tm_buf; + struct tm *sunrise_tm = gmtime_r(&sunrise_utc, &sunrise_tm_buf); + struct tm *sunset_tm = gmtime_r(&sunset_utc, &sunset_tm_buf); + + ESP_LOGI(TAG, "Pune 2025-08-29: Sunrise %02d:%02d UTC, Sunset %02d:%02d UTC", + sunrise_tm->tm_hour, sunrise_tm->tm_min, + sunset_tm->tm_hour, sunset_tm->tm_min); + + /* Sanity check: sunrise should be around 01:00 UTC (06:30 IST) */ + /* sunset should be around 13:00 UTC (18:30 IST) */ + TEST_ASSERT_TRUE(sunrise_tm->tm_hour >= 0 && sunrise_tm->tm_hour <= 3); + TEST_ASSERT_TRUE(sunset_tm->tm_hour >= 12 && sunset_tm->tm_hour <= 15); +} + +TEST_CASE("Test location struct interface", "[esp_daylight]") +{ + esp_daylight_location_t location = { + .latitude = 40.7128, + .longitude = -74.0060, + .name = "New York" + }; + + time_t sunrise_utc, sunset_utc; + bool result; + + result = esp_daylight_calc_sunrise_sunset_location( + 2025, 6, 21, /* Summer solstice */ + &location, + &sunrise_utc, &sunset_utc + ); + + TEST_ASSERT_TRUE(result); + TEST_ASSERT_NOT_EQUAL(0, sunrise_utc); + TEST_ASSERT_NOT_EQUAL(0, sunset_utc); + TEST_ASSERT_GREATER_THAN(sunset_utc, sunrise_utc); + + struct tm sunrise_tm_buf, sunset_tm_buf; + struct tm *sunrise_tm = gmtime_r(&sunrise_utc, &sunrise_tm_buf); + struct tm *sunset_tm = gmtime_r(&sunset_utc, &sunset_tm_buf); + + ESP_LOGI(TAG, "New York 2025-06-21: Sunrise %02d:%02d UTC, Sunset %02d:%02d UTC", + sunrise_tm->tm_hour, sunrise_tm->tm_min, + sunset_tm->tm_hour, sunset_tm->tm_min); +} + +TEST_CASE("Test polar regions - midnight sun", "[esp_daylight]") +{ + time_t sunrise_utc, sunset_utc; + bool result; + + /* Test Arctic location during summer (midnight sun) */ + result = esp_daylight_calc_sunrise_sunset_utc( + 2025, 6, 21, /* Summer solstice */ + 80.0, 0.0, /* High Arctic latitude */ + &sunrise_utc, &sunset_utc + ); + + /* Should return false for midnight sun conditions */ + TEST_ASSERT_FALSE(result); + ESP_LOGI(TAG, "Arctic midnight sun test: correctly returned false"); +} + +TEST_CASE("Test polar regions - polar night", "[esp_daylight]") +{ + time_t sunrise_utc, sunset_utc; + bool result; + + /* Test Arctic location during winter (polar night) */ + result = esp_daylight_calc_sunrise_sunset_utc( + 2025, 12, 21, /* Winter solstice */ + 80.0, 0.0, /* High Arctic latitude */ + &sunrise_utc, &sunset_utc + ); + + /* Should return false for polar night conditions */ + TEST_ASSERT_FALSE(result); + ESP_LOGI(TAG, "Arctic polar night test: correctly returned false"); +} + +TEST_CASE("Test time offset functionality", "[esp_daylight]") +{ + time_t base_time = 1640995200; /* 2022-01-01 00:00:00 UTC */ + time_t offset_time; + + /* Test positive offset (30 minutes after) */ + offset_time = esp_daylight_apply_offset(base_time, 30); + TEST_ASSERT_EQUAL(base_time + 1800, offset_time); + + /* Test negative offset (45 minutes before) */ + offset_time = esp_daylight_apply_offset(base_time, -45); + TEST_ASSERT_EQUAL(base_time - 2700, offset_time); + + /* Test zero offset */ + offset_time = esp_daylight_apply_offset(base_time, 0); + TEST_ASSERT_EQUAL(base_time, offset_time); + + ESP_LOGI(TAG, "Time offset tests passed"); +} + +TEST_CASE("Test input validation", "[esp_daylight]") +{ + time_t sunrise_utc, sunset_utc; + + /* Test invalid date */ + (void) esp_daylight_calc_sunrise_sunset_utc( + 2025, 13, 1, /* Invalid month */ + 18.5204, 73.8567, + &sunrise_utc, &sunset_utc + ); + /* Implementation should handle this gracefully */ + + /* Test extreme latitudes */ + (void) esp_daylight_calc_sunrise_sunset_utc( + 2025, 6, 21, + 91.0, 0.0, /* Invalid latitude > 90 */ + &sunrise_utc, &sunset_utc + ); + /* Should handle gracefully */ + + /* Test extreme longitudes */ + (void) esp_daylight_calc_sunrise_sunset_utc( + 2025, 6, 21, + 0.0, 181.0, /* Invalid longitude > 180 */ + &sunrise_utc, &sunset_utc + ); + /* Should handle gracefully */ + + ESP_LOGI(TAG, "Input validation tests completed"); +} + +TEST_CASE("Test known reference values", "[esp_daylight]") +{ + time_t sunrise_utc, sunset_utc; + bool result; + + /* Test London on summer solstice 2025 */ + result = esp_daylight_calc_sunrise_sunset_utc( + 2025, 6, 21, + 51.5074, -0.1278, /* London coordinates */ + &sunrise_utc, &sunset_utc + ); + + TEST_ASSERT_TRUE(result); + + struct tm sunrise_tm_buf, sunset_tm_buf; + struct tm *sunrise_tm = gmtime_r(&sunrise_utc, &sunrise_tm_buf); + struct tm *sunset_tm = gmtime_r(&sunset_utc, &sunset_tm_buf); + + ESP_LOGI(TAG, "London 2025-06-21: Sunrise %02d:%02d UTC, Sunset %02d:%02d UTC", + sunrise_tm->tm_hour, sunrise_tm->tm_min, + sunset_tm->tm_hour, sunset_tm->tm_min); + + /* London summer solstice: sunrise around 04:43 UTC, sunset around 20:21 UTC */ + TEST_ASSERT_TRUE(sunrise_tm->tm_hour >= 3 && sunrise_tm->tm_hour <= 6); + TEST_ASSERT_TRUE(sunset_tm->tm_hour >= 19 && sunset_tm->tm_hour <= 22); +} + +TEST_CASE("Test equatorial location", "[esp_daylight]") +{ + time_t sunrise_utc, sunset_utc; + bool result; + + /* Test Singapore (near equator) */ + result = esp_daylight_calc_sunrise_sunset_utc( + 2025, 3, 21, /* Equinox */ + 1.3521, 103.8198, /* Singapore coordinates */ + &sunrise_utc, &sunset_utc + ); + + TEST_ASSERT_TRUE(result); + + struct tm sunrise_tm_buf, sunset_tm_buf; + struct tm *sunrise_tm = gmtime_r(&sunrise_utc, &sunrise_tm_buf); + struct tm *sunset_tm = gmtime_r(&sunset_utc, &sunset_tm_buf); + + ESP_LOGI(TAG, "Singapore 2025-03-21: Sunrise %02d:%02d UTC, Sunset %02d:%02d UTC", + sunrise_tm->tm_hour, sunrise_tm->tm_min, + sunset_tm->tm_hour, sunset_tm->tm_min); + + /* Near equator, day length should be close to 12 hours */ + /* Handle day boundary crossing - if sunset appears before sunrise, add 24 hours */ + int day_length_minutes; + if (sunset_utc >= sunrise_utc) { + day_length_minutes = (sunset_utc - sunrise_utc) / 60; + } else { + /* Day boundary crossing - sunset is next day */ + day_length_minutes = ((sunset_utc + 24 * 3600) - sunrise_utc) / 60; + } + TEST_ASSERT_INT_WITHIN(30, 12 * 60, day_length_minutes); /* Within 30 minutes of 12 hours */ +} + +TEST_CASE("Test southern hemisphere", "[esp_daylight]") +{ + time_t sunrise_utc, sunset_utc; + bool result; + + /* Test Sydney, Australia */ + result = esp_daylight_calc_sunrise_sunset_utc( + 2025, 12, 21, /* Summer solstice in southern hemisphere */ + -33.8688, 151.2093, /* Sydney coordinates */ + &sunrise_utc, &sunset_utc + ); + + TEST_ASSERT_TRUE(result); + + struct tm sunrise_tm_buf, sunset_tm_buf; + struct tm *sunrise_tm = gmtime_r(&sunrise_utc, &sunrise_tm_buf); + struct tm *sunset_tm = gmtime_r(&sunset_utc, &sunset_tm_buf); + + ESP_LOGI(TAG, "Sydney 2025-12-21: Sunrise %02d:%02d UTC, Sunset %02d:%02d UTC", + sunrise_tm->tm_hour, sunrise_tm->tm_min, + sunset_tm->tm_hour, sunset_tm->tm_min); + + /* Should have valid sunrise/sunset times */ + TEST_ASSERT_NOT_EQUAL(0, sunrise_utc); + TEST_ASSERT_NOT_EQUAL(0, sunset_utc); + TEST_ASSERT_GREATER_THAN(sunset_utc, sunrise_utc); +} + +TEST_CASE("Test NULL pointer handling", "[esp_daylight]") +{ + time_t sunrise_utc, sunset_utc; + bool result; + + /* Test NULL location pointer */ + result = esp_daylight_calc_sunrise_sunset_location( + 2025, 6, 21, + NULL, + &sunrise_utc, &sunset_utc + ); + TEST_ASSERT_FALSE(result); + + /* Test NULL output pointers (should not crash) */ + (void) esp_daylight_calc_sunrise_sunset_utc( + 2025, 6, 21, + 0.0, 0.0, + NULL, NULL + ); + /* Should handle gracefully */ + + ESP_LOGI(TAG, "NULL pointer handling tests completed"); +} diff --git a/esp_daylight/test_apps/pytest_esp_daylight.py b/esp_daylight/test_apps/pytest_esp_daylight.py new file mode 100644 index 0000000000..db9a6eb5a1 --- /dev/null +++ b/esp_daylight/test_apps/pytest_esp_daylight.py @@ -0,0 +1,15 @@ +#!/usr/bin/env python3 +# SPDX-FileCopyrightText: 2025 Espressif Systems (Shanghai) CO LTD +# SPDX-License-Identifier: Apache-2.0 + +import pytest +from pytest_embedded import Dut + + +@pytest.mark.generic +def test_esp_daylight(dut: Dut) -> None: + """ + Test esp_daylight component functionality + """ + dut.run_all_single_board_cases(timeout=60) + diff --git a/esp_daylight/test_apps/sdkconfig.defaults b/esp_daylight/test_apps/sdkconfig.defaults new file mode 100644 index 0000000000..ef5e06c6b0 --- /dev/null +++ b/esp_daylight/test_apps/sdkconfig.defaults @@ -0,0 +1,4 @@ +# This file was generated using idf.py save-defconfig. It can be edited manually. +# Espressif IoT Development Framework (ESP-IDF) 5.4.0 Project Minimal Configuration +# +CONFIG_ESP_TASK_WDT_INIT=n