An experimental project to customize squawk virtual machine for microcontrollers
- Ported Squawk VM to mbed classic and esp8266
- Implemented aggressive dead code elimination; Static footprint is reduced to less than 128K (including romized classes)
- Optimized interpreter loop
- Provides easy way to add native methods
- Provides API to call HAL layer
- Has been tested on ESP8266, MICROBIT, LPC1768, NUCLEO_L476, and Linux/x86.
- Install gcc-arm-none-eabi
- Install JDK
- git clone https://github.com/tomatsu/squawk
- cd squawk; make
- cd project_gen/targets/mbed; make TARGET=LPC1768 PROJECT=helloworld
- cd /tmp/lpc1768_helloworld; make
- Install toolchain and SDK
- Install JDK
- git clone https://github.com/tomatsu/squawk
- cd squawk; make
- Set environment variable PATH and ESP_SDK For example, export ESP_SDK=$HOME/esp-open-sdk/sdk; export PATH=$HOME/esp-open-sdk/xtensa-lx106-elf/bin:$PATH
- cd project_gen/targets/esp8266; make PROJECT=helloworld
- cd /tmp/esp8266_helloworld; make
- Documentation
- Test
- CLDC8 support