This release is a pre-release and may not be stable for production use.
pymcu-avr
AVR (ATmega/ATtiny) backend for the PyMCU compiler. Free and open source.
Bundles the pymcuc-avr AOT binary that reads .mir IR files and emits AVR assembly,
then drives the AVR toolchain to produce a flashable Intel HEX file.
Pipeline
pymcuc --emit-ir → firmware.mir (target-agnostic IR)
pymcuc-avr (this pkg) → firmware.asm (AVR assembly)
avr-as / avra → firmware.hex (Intel HEX)
Installation
pip install pymcu-avr
The AVR toolchain (avr-gcc, avr-as, avr-objcopy) is sourced (in order) from the
pymcu-avr-toolchain wheel cache, common system install paths, or PATH. A system
avr-gcc also works with no extra package:
# macOS
brew tap osx-cross/avr && brew install avr-gcc
# Debian/Ubuntu
apt install gcc-avr binutils-avr avr-libc
Supported targets
Families: atmega, attiny, at90, atxmega.
Examples: ATmega328P, ATmega2560, ATmega32U4, ATtiny85.
Layout
src/python/pymcu/backend/avr/ backend plugin — wraps pymcuc-avr
src/python/pymcu/toolchain/avr/ AVR toolchain driver (assemble → HEX)
src/csharp/lib/ AvrBackendProvider + codegen
src/csharp/cli/ pymcuc-avr runner CLI
src/csharp/debugserver/ GDB-stub debug server
src/csharp/profiler/ cycle-accurate profiler
tests/integration/ NUnit suite on the AVR8Sharp emulator
tests/testkit/ shared I2C-oracle machinery (transaction
stream, TWI recorder, oracle.py runner)
tests/oracle/ language oracle corpus (184 probes, pytest)
tests/oracle-circuitpython/ three-way SSD1306 oracle: CircuitPython
10.3.1 on RP2040Sharp vs CPython vs AVR
firmware (needs an RP2040Sharp sibling
checkout)
Testing
dotnet test tests/integration runs the AVR8Sharp suite; just test-oracle runs the language oracle corpus (tests/oracle) under both compiler front ends.
Status
Alpha (API) / stable (codegen). 700+ integration tests green across ATmega328P, ATmega2560, ATmega32U4, ATtiny85.
1 maintainer
Metadata
1 maintainer
Release files for pymcu-avr 0.1.0b1
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Built distributions (wheels)
| File | Reset | |||
|---|---|---|---|---|
| pymcu_avr-0.1.0b1-py3-none-win_arm64.whl | Python 3 | none | Windows ARM64 | Details |
| pymcu_avr-0.1.0b1-py3-none-win_amd64.whl | Python 3 | none | Windows x86-64 | Details |
| pymcu_avr-0.1.0b1-py3-none-manylinux_2_28_x86_64.whl | Python 3 | none | Linux glibc 2.28+ x86-64 | Details |
| pymcu_avr-0.1.0b1-py3-none-manylinux_2_28_aarch64.whl | Python 3 | none | Linux glibc 2.28+ ARM64 | Details |
| pymcu_avr-0.1.0b1-py3-none-macosx_14_0_arm64.whl | Python 3 | none | macOS 14.0+ ARM64 | Details |
| pymcu_avr-0.1.0b1-py3-none-macosx_13_0_x86_64.whl | Python 3 | none | macOS 13.0+ x86-64 | Details |
Total release size: 17.5 MB
Release files / pymcu_avr-0.1.0b1-py3-none-win_arm64.whl
| Download URL | pymcu_avr-0.1.0b1-py3-none-win_arm64.whl |
|---|---|
| Size | 2.7 MB |
| Tags | Python 3 Windows ARM64 |
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Release files / pymcu_avr-0.1.0b1-py3-none-win_amd64.whl
| Download URL | pymcu_avr-0.1.0b1-py3-none-win_amd64.whl |
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| Size | 2.8 MB |
| Tags | Python 3 Windows x86-64 |
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Release files / pymcu_avr-0.1.0b1-py3-none-manylinux_2_28_x86_64.whl
| Download URL | pymcu_avr-0.1.0b1-py3-none-manylinux_2_28_x86_64.whl |
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| Size | 3.1 MB |
| Tags | Linux glibc 2.28+ x86-64 Python 3 |
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| Download URL | pymcu_avr-0.1.0b1-py3-none-manylinux_2_28_aarch64.whl |
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| Size | 2.9 MB |
| Tags | Linux glibc 2.28+ ARM64 Python 3 |
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Release files / pymcu_avr-0.1.0b1-py3-none-macosx_14_0_arm64.whl
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| Size | 2.9 MB |
| Tags | Python 3 macOS 14.0+ ARM64 |
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