micheleandCursor
a28120b44e
Refresh BOM (2026-07-09 CSV), Gerbers, EasyEDA project, pick-and-place, and schematic export; document corrected ADAU crystal/PLL strapping and Si4684 reference clock in the manual; add PCBWay acknowledgement on the back cover only. Co-authored-by: Cursor <cursoragent@cursor.com>
35 lines
1.4 KiB
TeX
35 lines
1.4 KiB
TeX
\chapter{Licensing}
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\label{ch:licensing}
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DigiRadio is dual-licensed, with hardware and firmware under separate but
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compatible open-source licences.
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\section{Hardware}
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The hardware --- schematics, PCB layout, Gerbers, and bill of materials
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--- is licensed under the \textbf{CERN Open Hardware Licence Version~2,
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Strongly Reciprocal (CERN-OHL-S v2)}. Anyone who modifies and distributes
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the hardware must release their changes under the same terms.
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\section{Firmware}
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The firmware is licensed under the \textbf{Apache License 2.0}. It grants
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patent rights explicitly and pairs naturally with the ESP-IDF ecosystem,
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which is Apache-licensed as well. Every source file carries the Apache
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header with an SPDX identifier.
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\section{Documentation and project pages}
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Where a hosting platform does not offer the CERN-OHL-S licence in its
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selector, the closest share-alike option is used for that page, with the
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authoritative licence stated as CERN-OHL-S v2. The definitive licensing
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is always the one declared in the project repository.
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\section{Third-party components}
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The design integrates third-party silicon (Silicon Labs, Analog Devices,
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Espressif, Feasycom/Qualcomm) whose datasheets, firmware images, and DSP
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tools remain subject to their respective vendors' terms. Those terms are
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unaffected by the DigiRadio licences and must be observed when
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redistributing vendor-supplied binaries.
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