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This library provides a [OpenStreetMap](https://www.openstreetmap.org/) (OSM) map fetching and tile caching system for ESP32-based devices.
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Under the hood it uses [LovyanGFX](https://github.com/lovyan03/LovyanGFX) and [PNGdec](https://github.com/bitbank2/PNGdec) to do the heavy lifting.
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A map is composed from downloaded OSM tiles and returned as a LGFX sprite.
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Tile fetching and decoding is performed concurrently across both cores on dualcore ESP32 devices.
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This library is **PlatformIO only** due to use of modern C++ features. The Arduino IDE is **not** supported.
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[](https://www.openstreetmap.org/)
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A map is composed from downloaded OSM tiles and returned as a LGFX sprite.
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The sprite can be pushed to the screen, saved to SD or used for further composing.
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The returned map can be pushed to the screen, saved to SD or used for further composing.
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Downloaded tiles are cached in psram for reuse.
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This library should work on any ESP32 type with psram and a LovyanGFX compatible display.
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OSM tiles are quite large -128kB per tile- so psram is required.
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Tile fetching and decoding is performed concurrently across both cores on multicore ESP32 devices.
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This project is not endorsed by or affiliated with the OpenStreetMap Foundation.
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The `OpenstreetMap-esp32` library -this library- is licensed under the [MIT license](/LICENSE).
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### The downloaded tile data has a Open Data Commons Open Database License (ODbL)
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### The downloaded tile data has a ODbL license
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OpenStreetMap® is open data, licensed under the [Open Data Commons Open Database License (ODbL)](https://opendatacommons.org/licenses/odbl/) by the OpenStreetMap Foundation (OSMF).
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