DietPi-Software | CAVA (console spectrum)

Created on 19 Nov 2016 · 11Comments · Source: MichaIng/DietPi

As title: https://github.com/karlstav/cava#cava-mp

Implementing with:

MPD FIFIO
dietpi-justboom

Software Request

Source

Fourdee

Most helpful comment

@k-plan

as well with 3.2 / 3.5 LCD Touchscreen Shield Support in DietPi ?

😉 yep, looks great on both :D

Fourdee on 19 Nov 2016

🎉1 👍1

All 11 comments

Huuh ... as well with 3.2 / 3.5 LCD Touchscreen Shield Support in DietPi ?

_PS: - after the gaming trip (retropi, OpenTyrian, Cuberite, MineOS, AmiBerry, DXX-Rebirth) you are now on the audio trip (JustBoom)?_ 😄

k-plan on 19 Nov 2016

@k-plan

as well with 3.2 / 3.5 LCD Touchscreen Shield Support in DietPi ?

😉 yep, looks great on both :D

Fourdee on 19 Nov 2016

🎉1 👍1

@Fourdee

looks great on both

wow, great news! 😃

Have you please any "preview" picture of a working device?
Would be very nice to see how it looks.

Is support for the 3 or 4 display keypads possible (MPD or CAVA) ?

http://odroid.com/dokuwiki/doku.php?id=en:c1_tft_keypads

http://odroid.com/dokuwiki/doku.php?id=en:3.5inch_lcd_shield#using_keypad

k-plan on 19 Nov 2016

👍1

@k-plan

Is support for the 3 or 4 display keypads possible (MPD or CAVA) ?

I'll take a look at the Odroid LCD 3.5 first. Next/previous track and volume seems good combo for the keys?

Have you please any "preview" picture of a working device?
Would be very nice to see how it looks.

Yep, i'll do a video when its nearly done 👍.
Having a few issues with CAVA performance on i2c, appears to be related to when the majority of bars are filled, temporally drastically lowers framerates.
Note to self: try a larger font.

Fourdee on 19 Nov 2016

😄1

@Fourdee

Yep, i'll do a video when its nearly done

Wow ... a video. Thanks, very nice. 😃

Next/previous track and volume seems good combo for the keys?

Hmm .. for 3.2 '' LCD (WaveShare) witch 3 keypads I think:

“Up” => Next

“Down” => Previous

“Enter” => Stop

3.5 '' LCD (Hardkernel) witch 4 keypads I think:

“Up” => Volume + (or: Next)

“Down” => Volume - (or: Previous)

“SPACE” => Previous (or: Stop)

“Enter” => Next (or: Repeat/Play)

(volume is easier to adjust direct at speaker)

k-plan on 19 Nov 2016

👍1

@k-plan

"Bash'd it", Odroid C2 + Odroid LCD 3.5:

apt-get install -y mpc

cat << _EOF_ > /etc/odroid_lcd_mpd_keys.sh
#!/bin/bash

VALUE=0
FP_SW=0
TICK_RATE=0.06
KEY_RELEASE_DELAY=0.3

aSW_MIN=(
    0
    505
    670
    760
)

aSW_MAX=(
    15
    525
    690
    780
)

aSW_COMMAND=(
    'next'
    'prev'
    'play' #+ pause
    'stop'
)


#Main

# - C1
if [ -f /sys/class/saradc/saradc_ch0 ]; then

    FP_SW='/sys/class/saradc/saradc_ch0'

elif [ -f /sys/class/saradc/ch0 ]; then

    FP_SW='/sys/class/saradc/ch0'

fi

while true
do

    VALUE=\$(cat "\$FP_SW")

    for ((i=0; i<\${#aSW_MIN[@]}; i++))
    do

        if (( \$VALUE <= \${aSW_MAX[\$i]} && \$VALUE >= \${aSW_MIN[\$i]} )); then

            # - Play/pause
            if [ "\${aSW_COMMAND[\$i]}" = "play" ] || [ "\${aSW_COMMAND[\$i]}" = "pause" ]; then

                aSW_COMMAND[\$i]='play'
                if (( \$(mpc | grep -ci -m1 'playing') )); then

                    aSW_COMMAND[\$i]='pause'

                fi

            fi

            # - exec
            mpc \${aSW_COMMAND[\$i]} &> /dev/tty1
            sleep \$KEY_RELEASE_DELAY
            break

        fi

    done

    sleep \$TICK_RATE

done

unset aSW_MIN
unset aSW_MAX
unset aSW_COMMAND

_EOF_

chmod +x /etc/odroid_lcd_mpd_keys.sh

cat << _EOF_ > /etc/systemd/system/odroid_lcd_mpd_keys.service
[Unit]
Description=odroid_lcd_mpd_keys
After=sound.target

[Service]
Type=forking

ExecStart=/bin/bash -c '/etc/odroid_lcd_mpd_keys.sh &'
#ExecStop=/usr/bin/killall -w odroid_lcd_mpd_keys.sh

[Install]
WantedBy=default.target
_EOF_
systemctl daemon-reload

systemctl restart odroid_lcd_mpd_keys.service

Fourdee on 20 Nov 2016

👍1

@Fourdee

looks great, nice work. But I can't test it. 😢

It's seems to be time going out to buy a DAC HAT or a sound card for some of my devices.
Any suggestion?

k-plan on 20 Nov 2016

@k-plan
I've got a spare HiFi Shield Plus for C1/C2, will send it over in next few days.

For Raspberry Pi, JustBoom DAC HAT (https://www.justboom.co/product/justboom-dac-hat/) or DAC Zero (https://www.justboom.co/product/justboom-dac-zero-phat/) are both excellent.

Fourdee on 21 Nov 2016

The low framerate (10-15) on the Odroid LCD shield causes massive IO overheads when cava is running, even at matching framerates: