Simavr
simavr is an open-source AVR simulator for Linux/Windows/macOS. It can emulate popular AVR microcontrollers like ATmega128, simulating the behavior of the microcontroller so developers can test firmware without hardware.
simulator
avr
microcontroller
emulator
testing
firmware
Simavr: Open-Source AVR Simulator
Free and open-source software emulator for popular AVR microcontrollers, allowing developers to test firmware without hardware
What is Simavr?
simavr is an open-source AVR simulator for Linux, Windows and macOS operating systems. It allows developers to simulate popular Atmel AVR microcontrollers like ATmega128, ATmega256, ATmega8 and more without needing to have the physical hardware.
Some key features of simavr:
- Accurately emulates the behavior of AVR microcontrollers for testing firmware
- Supports simulating sensors, buttons, UART serial ports, ADC, timers, SPI, TWI and more
- Allows debugging cycle-by-cycle or run free at full CPU speed
- Integrates with simulators like GTKWave to visualize signals
- Supports simulating interrupts, sleep modes and fuse bits
- Free and open source software under LGPL license
simavr is targeted towards firmware and hardware developers building products with AVR chips. It enables testing the firmware during development without needing prototype hardware, which saves cost and time. Developers can leverage simavr to write and debug firmware faster compared to testing only on physical boards.
Simavr Features
Features
- Simulates popular AVR microcontrollers like ATmega128
- Allows testing and debugging firmware without hardware
- Supports breakpoints, watches and other debugging features
- Has a GUI for inspecting registers, memory and peripherals
- Can integrate with GDB for more advanced debugging
- Runs on Linux, Windows and macOS
Pricing
- Open Source
Pros
Saves money by eliminating need for hardware for testing
Allows testing early in development before hardware is available
Faster testing iterations without programming physical chips
Allows testing edge cases and failure modes easily
Integrates with IDEs and GDB for familiar workflow
Cons
Does not perfectly model real device behavior in all cases
Timing may differ slightly from real hardware
Limited to simulating AVR microcontrollers only
Requires learning another tool besides real hardware
Official Links
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