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38 lines
791 B
ReStructuredText
38 lines
791 B
ReStructuredText
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=======
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QR code
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=======
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QR code generation with LVGL. Uses
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`QR-Code-generator <https://github.com/nayuki/QR-Code-generator>`__ by
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`nayuki <https://github.com/nayuki>`__.
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Usage
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-----
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Enable :c:macro:`LV_USE_QRCODE` in ``lv_conf.h``.
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Use :c:expr:`lv_qrcode_create()` to create a qrcode object, and use
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:c:expr:`lv_qrcode_update()` to generate a QR code.
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If you need to re-modify the size and color, use
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:c:expr:`lv_qrcode_set_size()` and :c:expr:`lv_qrcode_set_dark/light_color()`, and
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call :c:expr:`lv_qrcode_update()` again to regenerate the QR code.
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Notes
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-----
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- QR codes with less data are smaller, but they scaled by an integer
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number to best fit to the given size.
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Example
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-------
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.. include:: ../examples/libs/qrcode/index.rst
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API
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---
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:ref:`lv_qrcode`
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:ref:`qrcodegen`
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