#!/bin/bash
# UNO Monitor Sender
# kidacro@archamedis.net
#

# TTY Device to use
TTY="/dev/ttyACM0"
##########################################################

# Stats
# we are limited to 2 lines and 16 chars per line so, light stats & no labels
CLOAD=$(mpstat | awk '$3 ~ /CPU/ { for(i=1;i<=NF;i++) { if ($i ~ /%idle/) field=i } } $3 ~ /all/ { printf("%d%%",100 - $field) }')
CTEMP=$(sensors | grep TSI0_TEMP: | tr '°+' ' ' | awk '{print $2}' | paste -sd ', ')
MFREE=$(free -h | grep Mem | awk '{print $4}' | paste -sd ', ')
RFREE=$(df -h | grep /dev/nvme0n1p3 | awk '{print $4}' | paste -sd ', ')
LFREE=$(df -h | grep /dev/sda1 | awk '{print $4}' | paste -sd ', ')
SFREE=$(df -h | grep /dev/mapper/store0-lvol1 | awk '{print $4}' | paste -sd ', ')

# setup device
stty -F $TTY ispeed 9600 ospeed 9600 -ignpar cs8 -cstopb -echo -hupcl

# Line 1
LINE1="#1$CLOAD $CTEMP $MFREE@"
/usr/bin/echo "$LINE1" > $TTY # -ne
echo Sending to $TTY: $LINE1

# line 2
LINE2="#2$RFREE $LFREE $SFREE@"
/usr/bin/echo "$LINE2" > $TTY
echo Sending to $TTY: $LINE2