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Generate Gree heatpump IR codes to be used in LIRC
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#!/bin/bash | |
# Generate Gree heat pump IR codes, according to | |
# https://forum.mysensors.org/uploads/files/1469565493670-gree.pdf | |
# How to use raw codes in LIRC see e.g. | |
# https://github.com/suikammd/AirConditioner-Homekit/ | |
MSG_SPACE=20000 | |
HDR_MARK=9000 | |
HDR_SPACE=4500 | |
BIT_MARK=550 | |
ZERO_SPACE=550 | |
ONE_SPACE=1660 | |
BIT0="$BIT_MARK $ZERO_SPACE" | |
BIT1="$BIT_MARK $ONE_SPACE" | |
CODE_COOL=1 | |
CODE_HEAT=4 | |
CODE_POWER=8 | |
err() { echo "$@"; exit 1; } | |
print_bits() { | |
local bb=$1 cc=$2 | |
while ((cc-- > 0)); do | |
(( (bb & 1) > 0)) && printf "$BIT1 " || printf "$BIT0 " | |
((bb >>= 1)) | |
done | |
} | |
[[ -z "$2" ]] && err "Please provide temp (16..30) and fan speed (0..3)" | |
temp=$1 | |
fan=$2 | |
# Remove CODE_POWER to get OFF code | |
# Replace CODE_COOL with CODE_HEAT to get heating codes | |
d0=$(( CODE_POWER + CODE_COOL + ( (fan & 3) << 4 ) )) | |
d1=$(( (temp - 16) & 15 )) | |
d2=0 | |
d3=80 | |
d4=2 | |
d5=0 | |
d6=32 | |
d7=0 | |
d8=$(( ( ( (d0 + d1 + d2 + d3) << 4 ) + d5 + d6 + d7 + 160 ) & 240 )) | |
printf "$HDR_MARK $HDR_SPACE " | |
print_bits $d0 8 | |
print_bits $d1 8 | |
print_bits $d2 8 | |
print_bits $d3 8 | |
print_bits $d4 3 | |
printf "$BIT_MARK $MSG_SPACE " | |
print_bits $d5 8 | |
print_bits $d6 8 | |
print_bits $d7 8 | |
print_bits $d8 8 | |
printf "${BIT_MARK}\n" | |
### END ### |
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