52 lines
1.8 KiB
Markdown
52 lines
1.8 KiB
Markdown
Copyright 2023 (C) Peter McGoron.
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This file is a part of Upsilon, a free and open source software project.
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For license terms, refer to the files in `doc/copying` in the Upsilon
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source distribution.
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__________________________________________________________________________
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This manual describes the controller software programming. This guide does not
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describe Verilog: see `verilog_manual.md` for that.
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# Preqreuisites
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You must know basic Linux shell (change directories, edit files with `vi`)
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and basic SSH usage (sftp, ssh).
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Knowledge of Micropython (a subset of Python) is required for scripting.
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I assume that you have the controller running and accessable. See `docker.md`
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for the easy quick-start guide.
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# Programming in MicroPython
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## Introduction to MicroPython
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MicroPython is a programming language that is very similar to Python. It is
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stripped down and designed to run on very small devices. If you have written
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Python, you will be able to use MicroPython without issue. If you are not
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a hardcore Python programmer, you might not even notice a difference.
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Everything you need to know is [here](https://docs.micropython.org).
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## Standard Library
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There are two modules of the standard library: `mmio` and `comm`.
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`mmio` are wrappers that handle reads and writes from MMIO pins. This file
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is automatically generated by the build process. This file is generated in
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the `gateware` directory (if you use the Docker build system, the file is
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automatically copied to `boot/mmio.py`).
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`comm` contains higher level wrappers for DAC and ADC pins. This module is
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documented well enough that you should be able to read it and understand
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how to use it.
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# FAQ
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## SCP Is Not Working
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SCP by default uses SFTP, which dropbear does not support. Pass `-O` to all
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SCP invocations to use the legacy SCP protocol.
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