itspngu

Keybase proof

I hereby claim:

• I am itspngu on github.
• I am pngu (https://keybase.io/pngu) on keybase.
• I have a public key whose fingerprint is 9F0C 4BE0 C1EB 1DC1 7FD6 D100 86DA D9B2 B3C2 C6DF

To claim this, I am signing this object:

itspngu

Installing an up-to-date AVR cross compilation toolchain for QMK on Ubuntu 20.04+

Unfortunately Ubuntu packages a fairly old (5.3.0) version of gcc-avr at the time of writing. Versions of gcc-avr from 8.3.0 onwards will produce significantly smaller binaries. The steps of building and installing a cutting-edge AVR toolchain on Ubuntu (tested on 20.04/WSL2 and 20.10/Baremetal) are outlined below.

Most of the procedure is loosely based on this manpage.

Prequisites

It's a good idea to run all of this from a folder dedicated to it.

itspngu

#include "dz60.h"


#define MODS_SHIFT_MASK  (MOD_BIT(KC_LSHIFT)|MOD_BIT(KC_RSHIFT))

enum custom_keycodes {
	KX_UMLAUT_A = SAFE_RANGE,
	KX_UMLAUT_O,
	KX_UMLAUT_U,
	KX_UMLAUT_S,