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Jeff Epler 6834cf3432 OK what are we up to? let's explain		2022-10-22 20:24:44 -05:00
py	OK what are we up to? let's explain	2022-10-22 20:24:44 -05:00
.gitignore	Add a tiny elfutils like library	2022-10-22 20:20:13 -05:00
LICENSE	OK what are we up to? let's explain	2022-10-22 20:24:44 -05:00
Makefile	Add a tiny elfutils like library	2022-10-22 20:20:13 -05:00
README.md	OK what are we up to? let's explain	2022-10-22 20:24:44 -05:00
sdkconfig.h	standalone build for riscv ulp programs	2022-10-22 18:00:54 -05:00
ulp.c	standalone build for riscv ulp programs	2022-10-22 18:00:54 -05:00
ulp.riscv.ld	standalone build for riscv ulp programs	2022-10-22 18:00:54 -05:00

This is a demonstration prototype for CircuitPython "coproc" on esp32s2/s3

Coproc is a new feature in CircuitPython 8 for using the riscv "ultra low power" coprocessor on esp32s2 and esp32s3 microcontrollers.

Two difficulties presented themselves to me so far:

Building a program
Accessing program variables from Python without manually transcribing hex addresses

The code here builds towards addressing these problems.

Building

.../esp-idf/install.sh
. .../esp-idf/export.sh
make

python py/minidump.py

In principle, you now use a wrapper around minielf to (A) load the Coproc binary and (B) to find symbols within the CoprocMemory.