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#!/bin/bash
#----------------------------------------------------------------------
# A firmware Sketch for the Keyboardio Model 01 -- apply color maps
# Copyright © 2019 Guilhem Moulin <guilhem@fripost.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#----------------------------------------------------------------------
set -eu
PATH=/usr/bin:/bin
export PATH
PALETTE="$1"
COLORMAP="$2"
DEFAULT_DEVICE_PATH=( /dev/serial/by-id/usb-keyboardio_Model_01_* )
DEVICE_PATH="${DEVICE_PATH:-${DEFAULT_DEVICE_PATH[0]}}"
stty -F "$DEVICE_PATH" 9600 raw -echo
# cf. key_led_map in
# ./lib/hardware/keyboardio/avr/libraries/Kaleidoscope/src/Kaleidoscope-Hardware-Model01.h
declare -a LED_MAP=(
3 4 11 12 19 20 26 27 36 37 43 44 51 52 59 60
2 5 10 13 18 21 25 28 35 38 42 45 50 53 58 61
1 6 9 14 17 22 24 29 34 39 41 46 49 54 57 62
0 7 8 15 16 23 31 30 33 32 40 47 48 55 56 63
)
declare -a LED_RMAP_LEFT=() LED_RMAP_RIGHT=() LED_RMAP=()
for ((r = 0; r < 4; r++)); do
for ((c = 0; c < 8; c++)); do
LED_RMAP_LEFT[${LED_MAP[r*16+c]}]=$((r*8+c))
LED_RMAP_RIGHT[${LED_MAP[r*16+8+c]}-32]=$((r*8+c))
done
done
transpose() {
local i offset=$(($1 + 1 - ${#LED_MAP[@]}))
MAPFILE[$1]="$2"
for ((i = 0; i < ${#LED_RMAP_LEFT[@]}; i++)); do
printf " %d" "${MAPFILE[offset+${LED_RMAP_LEFT[i]}]}"
done
for ((i = 0; i < ${#LED_RMAP_RIGHT[@]}; i++)); do
printf " %d" "${MAPFILE[offset+32+${LED_RMAP_RIGHT[i]}]}"
done
}
colormap() {
local colormap="$(mktemp --tmpdir)" fd
declare -a MAPFILE
# ugly workaround for the lack of O_TMPFILE
exec {fd}>"$colormap"
rm -f -- "$colormap"
sed -r "/^#/d; s/\\s+/\\n/g" <"$COLORMAP" | sed "/^\\s*$/d" >&$fd
printf "colormap.map"
mapfile -t -C transpose -c ${#LED_MAP[@]} <"/proc/self/fd/$fd"
printf "\\n"
{fd}>&-
}
palette() {
{ echo "palette"; sed "/^\\s*#/d; s/\\s*#.*//" <"$PALETTE"; } \
| sed -r ':a; $!N; s/\n/ /; ta; s/\s+/ /g'
}
serial_send() {
local fd x old_IFS="$IFS"
exec {fd}<"$DEVICE_PATH"
"$@" >"$DEVICE_PATH"
while IFS= read -r -u "$fd" x; do
x="${x%$'\r'}"
[ "$x" != "." ] || break
printf "%s\\n" "$x"
done
IFS="$old_IFS"
exec {fd}<&-
}
serial_send palette
serial_send colormap
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