Help getting lcd screen to work


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I am using RP on a branded nas box with an lcd display. The folks using freenas/truenas have worked out a script to load on boot that allows you to read a multitude of info from this screen..cpu temp, ip, etc. Is there a way to make this script (which is for truenas/freenas) work on a RP 7.0.1 apollolake build?

All this information is linked from this post. They even mention specific fan control, as the fan seems to be at max speed from boot on RP.

This box has a Pentium N3710 with upgraded 16gb ram and 2 nic. DSM7 seems to work fine. Both lan ports work, drives are seen in order and successfully created a SHR btrfs pool. Shut down works.. all seems fine. (I have not tried transcoding for video as that is not my concern at this point, hopefully its task will simply be storage only)

 

If anyone can assist me I would highly appreciate it.

#!/bin/bash
#
# Post-init script for FreeNAS on Western Digital PR2100/PR4100 
# wdhws v1.0 by TFL
# 
# BSD 3 LICENSE
#
# thanks unix stackexchange question 231975

setup_tty() {
    tty=/dev/cuau3
    exec 4<$tty 5>$tty
}

setup_i2c() {
    # load kernel modules required for the temperature sensor on the RAM modules
    kldload -n iicbus smbus smb ichsmb
}

send() {
    setup_tty
    # send a command to the PMC module and echo the answer
    echo -ne "$1\r" >&5
    read ans <&4
    if [ "$ans" = "ALERT" ]; then
        echo -ne ALERT >&2
        exit 2 
    else
        # keep this for debugging failing commands
        if [ "$ans" = "ERR" ] || [ -z "$ans" ]; then
            echo "CMD $1 gives ERR at $2" >&2
            send_empty
            ans=$(send "$1" $(($2 + 1)))
            #exit 1
        fi
    fi
    # only echo the result for retries ($2 not empty)
    if [ ! -z $2 ]; then 
        echo "CMD $1 gives '$ans' at $2" >&2 
    fi 
    echo $ans
    send_empty
    # deconstruct tty file pointers, otherwise this script breaks on sleep 
    exec 4<&- 5>&-
}

send_empty() {
    # send a empty command to clear the output
    echo -ne "\r" >&5
    read ignore <&4
}

get_ncpu() {
    # get the number of CPUs
    sysctl -n hw.ncpu
}

get_coretemp() {
    # get the CPU temperature and strip of the Celsius
    sysctl -n dev.cpu.$1.temperature | cut -d'.' -f1
}

get_disktemp() {
    # get the disk $i temperature only if it is spinning
    smartctl -n standby -A /dev/ada$1 | grep Temperature_Celsius | awk '{print $NF}'
}

get_ramtemp() {
    # get the memory temperature from the I2C sensor
    smbmsg -s 0x98 -c 0x0$1 -i 1 -F %d
}

get_pmc() {
    # get a value from the PMC
    # e.g. TMP returns TMP=25 --> 25
    send $1 | cut -d'=' -f2
}

init() {
    setup_tty
    setup_i2c

    echo "get system status and firmware"
    send VER
    send CFG 
    send STA
    
    show_welcome
    stop_powerled
}

show_welcome() {
    # set welcome message
    # maximum  "xxx xxx xxx xxx " 
    send   "LN1=    FreeNAS     "
    send   "LN2= go go go go go " 
}

stop_powerled() {
    # stop blinking power LED
    send PLS=00
    send LED=00  # set to 01 to enable it
    send BLK=00
}

show_ip() {
    send "LN1=Interface re$1"
    ip=$(ifconfig re$1 | grep inet | awk '{printf $2}')
    send "LN2=$ip"
}

monitor() {
    lvl="COOL"

    # check RPM (fan may get stuck) and convert hex to dec
    fan=$(get_pmc FAN)
    rpm=$((0x$(get_pmc RPM)))
    echo "Got rpm $rpm"
    if [ "$rpm" != ERR ]; then
        if [ "$rpm" -lt 400 ]; then
            echo "WARNING: low RPM - $rpm - clean dust!"
        fi
    fi
    
    # check pmc  
    tmp=$((0x$(get_pmc TMP)))
    if [ "$tmp" -gt 64 ]; then
        lvl="HOT"
    fi

    # check disks [adjust this for PR2100!!]
    for i in 0 1 2 3 ; do
        tmp=$(get_disktemp $i)
        echo "disk $i is $tmp"
        if [ ! -z $tmp ] && [ "$tmp" -gt 40 ]; then
            echo "Disk $i temperature is $tmp" 
            lvl="HOT"
        fi
    done

    # check cpu
    for i in $(seq $(get_ncpu)); do
        tmp=$(get_coretemp $((i-1)))
        echo "cpu $i is $tmp"
        if [ "$tmp" -gt 50 ]; then
            echo "CPU $i temperature is $tmp"
            lvl="HOT"
        fi
    done
 
    # check ram
    for i in 0 1; do
        tmp=$(get_ramtemp $i)
        echo "ram temp is $tmp for $i"
        if [ "$tmp" -gt 40 ]; then
            echo "RAM $i temperature is $tmp"
            lvl="HOT"
        fi
    done 

    echo "Temperature LVL is $lvl"
    if [ "$lvl" == HOT ] ; then
        if [ "$fan" != 40 ]; then
            send FAN=40
        fi
    else
        if [ "$fan" != 20 ]; then
            send FAN=20 
        fi
    fi
}

check_btn_pressed() {
    btn=$(get_pmc ISR) 
    #echo "Btn is .$btn."
    
    case $btn in
    20*)
        echo "Button up pressed!"
        menu=$(( ($menu + 1) % 3 ))
        ;;
    40*) 
        echo "Button down pressed!"
        menu=$(( ($menu + 2) % 3 ))
        ;;
    *)
        return    
    esac
    
    case "$menu" in
    0)
        show_welcome
        ;;
    1)
        show_ip 0
        ;;
    2)
        show_ip 1
        ;;
    # if you add menu items here, update mod 3 uses above    
    esac        
}

# initial setup
init

while true; do
    # adjust fan speed every 30 seconds
    monitor

    # check for button presses
    for i in $(seq 30); do 
        sleep 1
        check_btn_pressed
    done
done

 

 

 

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