2022-09-17 00:35:47 -04:00
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# upsilon
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Upsilon is a 100% free and open source STM/AFM controller for FPGAs.
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## Organization
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The project is split into hardware (`firmware`), kernel (`software`),
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and client software (`client`).
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Hardware uses Verilog, LiteX and F4PGA to implement the Soft CPU (Risc-V),
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hardware communication, PI control loop, image scanning, and tip autoapproach.
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Kernel implements the network communication between the hardware and the
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client software.
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The client software receives and interprets data from the hardware.
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## License
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GNU GPL v3.0 or later. Other portions are dual licensed under the CERN
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OHL-v2-S, or permissive licenses: please view all `COPYING` files for more
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legal information.
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2022-09-17 00:37:42 -04:00
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## See also
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* SPI nodes -- <https://software.mcgoron.com/peter/spi>
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