Waveshare 7.9 - project-owner/PeppyPlayers.doc GitHub Wiki

Overview

Here is the display description on the Waveshare web site. The display is available on Amazon.

waveshare-7.9

Disk Image Content

This disk image is based on the Headless Disk Image and has the following additional software and configuration:

  • Screen was rotated (display_rotate=3 in /boot/config.txt).
  • Rainbow splash disabled (disable_splash=1 in /boot/config.txt)
  • Peppy Player was configured to work with GUI displayed in LCD, Peppy Player splash screen was configured.

Installation and Configuration

Here are the steps which were used to create the Disk Image for the Waveshare 7.9" touchscreen.

Install the Headless Disk Image

  • Connect display using HDMI and USB connectors.
  • Download the Headless Disk Image
  • Write downloaded disk image to 8GB MicroSD card.
  • Insert a MicroSD card to a Raspberry Pi, power on, login using putty.

Configure Peppy Player for display

Edit the player configuration file

nano Peppy/config.txt

Set parameters:

width = 1280
height = 400
hdmi = True
headless = False

Copy changed file to the defaults:

cp Peppy/config.txt Peppy/defaults/

Edit Spectrum Analyzer screensaver configuration:

nano Peppy/screensaver/spectrum/config.txt

Set property:

screen.size = wide

Edit VU Meter screensaver configuration:

nano Peppy/screensaver/peppymeter/config.txt

Set property:

meter.size = wide

This change will enable the wide type of the VU Meter screensaver:

wide

Configure the touchscreen

Edit the system configuration file:

sudo nano /boot/config.txt

Set the parameters:

max_usb_current=1
hdmi_group=2
hdmi_mode=87
hdmi_timings=400 0 100 10 140 1280 10 20 20 2 0 0 0 60 0 43000000 3
display_rotate=3
disable_splash=1

Comment out the line (required for Raspberry Pi 4, works with Pi 3 too):

#dtoverlay=vc4-fkms-v3d

Install library for PIL:

sudo apt-get install libopenjp2-7-dev

Install touchscreen library:

sudo apt-get install libts-bin

sudo reboot

Calibrate touchscreen:

sudo TSLIB_FBDEVICE=/dev/fb0 TSLIB_TSDEVICE=/dev/input/event0 ts_calibrate

Install the Splash Screen 

sudo apt-get install fbi
wget https://raw.githubusercontent.com/project-owner/Peppy.doc/master/files/splash.service

Edit the service file:

nano splash.service

change the line to:

ExecStart=/usr/bin/fbi -d /dev/fb0 --noverbose -a /home/pi/Peppy/splash/splash-1280.png

Start service:

sudo mv splash.service /etc/systemd/system
sudo systemctl enable splash
sudo systemctl start splash

Configure Audio

To switch from HDMI to the on-board audio run:

sudo raspi-config

Select System Options/Audio/Headphones.

Configure peppyalsa plugin

Change the audio card number from 0 (HDMI) to 1 (Headphones):

nano .asoundrc-equal-peppyalsa

Change the properties:

type hw card 0
...
slave.pcm "plughw:0,0"

to

type hw card 1
...
slave.pcm "plughw:1,0"

Switch to edited file and test audio:

cp .asoundrc-equal-peppyalsa .asoundrc
speaker-test -t wav

Remove console messages during booting

Edit the configuration file:

sudo nano /boot/cmdline.txt

Add parameter

fbcon=map:2

Enable Player / Reboot / Test / Cleanup

Enable the player:

sudo nano /etc/rc.local

remove comment at line:

su pi -c 'cd /home/pi/Peppy; openvt -s -- python3 peppy.py'

sudo reboot

Test player functionality.
Cleanup:

rm -rf .wget_hsts .bash_history
sudo poweroff
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