49 lines
1.4 KiB
ReStructuredText
49 lines
1.4 KiB
ReStructuredText
.. _AVR-System-emulator:
|
|
|
|
AVR System emulator
|
|
-------------------
|
|
|
|
Use the executable ``qemu-system-avr`` to emulate a AVR 8 bit based machine.
|
|
These can have one of the following cores: avr1, avr2, avr25, avr3, avr31,
|
|
avr35, avr4, avr5, avr51, avr6, avrtiny, xmega2, xmega3, xmega4, xmega5,
|
|
xmega6 and xmega7.
|
|
|
|
As for now it supports few Arduino boards for educational and testing purposes.
|
|
These boards use a ATmega controller, which model is limited to USART & 16-bit
|
|
timer devices, enough to run FreeRTOS based applications (like
|
|
https://github.com/seharris/qemu-avr-tests/blob/master/free-rtos/Demo/AVR_ATMega2560_GCC/demo.elf
|
|
).
|
|
|
|
Following are examples of possible usages, assuming demo.elf is compiled for
|
|
AVR cpu
|
|
|
|
- Continuous non interrupted execution::
|
|
|
|
qemu-system-avr -machine mega2560 -bios demo.elf
|
|
|
|
- Continuous non interrupted execution with serial output into telnet window::
|
|
|
|
qemu-system-avr -M mega2560 -bios demo.elf -nographic \
|
|
-serial tcp::5678,server=on,wait=off
|
|
|
|
and then in another shell::
|
|
|
|
telnet localhost 5678
|
|
|
|
- Debugging with GDB debugger::
|
|
|
|
qemu-system-avr -machine mega2560 -bios demo.elf -s -S
|
|
|
|
and then in another shell::
|
|
|
|
avr-gdb demo.elf
|
|
|
|
and then within GDB shell::
|
|
|
|
target remote :1234
|
|
|
|
- Print out executed instructions (that have not been translated by the JIT
|
|
compiler yet)::
|
|
|
|
qemu-system-avr -machine mega2560 -bios demo.elf -d in_asm
|