Scott Mabin MabezDev

Overview

Initial dev environment setup for ESP32-C3 and ESP32-C6 programming, tailored towards Rust development. Some of this will also apply to the ESP32-C2 as well as the ESP32-H2 and ESP32-P4 when they are released.

General Setup
Setup USB JTAG
Setup GPIO JTAG

General Setup

Install ESP tooling:

Screen sharing on Hyprland (Arch Linux)

Mappings for DMI/SMBIOS to Linux and dmidecode

Information can be put into dmi tables via some qemu-system hosts (x86_64 and aarch64). That information is exposed in Linux under /sys/class/dmi/id and can be read with dmidecode. The names are very annoyingly inconsistent. The point of this doc is to map them.

Mappings

Example qemu cmdline:

qemu-system-x86_64 -smbios type=<type>,field=value[,...]

qemu-system-x86_64 -smbios type=0,vendor=superco,version=1.2.3

Adding Sections to ELF Binaries

Suppose you need to add a section to an ELF binary to contain information gathered at compile time, but to be used at link time or run time. Here's how to add a section named .okdata and either populate it with data either after or before emitting the ELF binary.

Adding a Section After Emitting

In this case, you'll add file’s contents to an already existing binary. objcopy copies and translates object files, such that adding a new section is a matter of writing that new section’s contents into the ELF file.

(Optional) Create a simple program’s object file.

	(version 1)
	#Kicad 7

	# 2-layer, 1oz copper
	(rule "Minimum Trace Width (outer layer)"
	(constraint track_width (min 5mil))
	(layer outer)
	(condition "A.Type == 'track'"))

	(rule "Minimum Trace Spacing (outer layer)"

	#!/usr/local/bin/python3

	# For Gigabyte M27Q KVM connected over USB-C
	#
	# Reads brightness value of builtin display from system, adapts it (Lunar-style) and sends over USB command to external display
	#
	# You need PyUSB and PyObjC
	#
	# Not much testing was done so far, only on MBP A1990 15" 2019 i7 555X
	#