ulp-c

ulp-c is a C compiler for the ESP32 ULP coprocessor. It is not yet functional.

Status

This repository contains multiple compilers. C is compiled to Hlp, Hlp is compiled to assembly, assembly is compiled to binary. Below is the completion status:

• Assembler
  • Compiles
  • Common code reduction
• Hlp
  • Compiles
  • Optimizations
    • Register allocation
• C
  • Compiles
  • Examples

Testing

The project can be tested on emulator with:

go test ./...

The project can be tested on hardware as well. In the next commands, change PORT to the desired USB port. First upload the test app to the esp32:

esptool.py --chip esp32 --port PORT --baud 460800 write_flash -z 0x1000 pkg/usb/test_app/test_app.bin

Then run all tests on emulator and hardware with:

ESP_PORT=PORT go test ./... -p 1