GPI case 2 information and ideas

[takov751]

Gamepad seems like a no issue it's somekind of usb HID device by the look of it as I couldn't find other than "it's just works"

1. I look trough and if dpi24.dto has no custom patch made by retroflag it's out dated. The latest file can be found

https://github.com/raspberrypi/firmware/blob/master/boot/overlays/dpi24.dtbo

LCD specific config.txt available in patch zip from their repo. That can be easily copied.
2. case has only a power switch and that can be implemented with simple

from gpiozero import Buttons, LED


powerPin = 26
powerenPin = 27

def shut() :
    os.system("sudo shutdown -h now")

#Turn on power led
led_power = LED(powerenPin)
led_power.on()
#init shutdown feature
btn_power = Button(powerPin)
btn_power.when_pressed = shut

3. The real issue is to switch from lcd to hdmi. This should be done by rebooting, and the gpicase2 has a weird check for it
   The pin has to be enable as input and this method seems to be working only with this case. same issue with audio

HDMI_HPD=18
HDMI_HPD_VALUE=$(cat /sys/class/gpio/gpio$HDMI_HPD/value)

if "1" = $HDMI_HPD_VALUE ; then

4. internal audio is simply adding /etc/modprobe.d/alsa-base.conf (maybe to cmdline.txt instead)

options snd_usb_audio index=0

However switching to hdmi audio from internal can be tricky

[github-actions]

Hello there 👋
Thanks for submitting your first issue to the Retro Home project 🐛 We'll try and take a look at your issue soon ⏲

In the meantime you might want to join the Wimpy's World Discord 🗣 where we have a large community of Linux 🐧 enthusiasts and passionate open source developers 🧑‍💻 and a support channel for this project.

You might also be interested in following Wimpy's World Twitch 📡 channel where Wimpy streams let's code videos, including this project, several times a week. A back catalog of past live streams and other Linux 🐧 and Raspberry Pi 🥧 related content is available on Wimpy's World YouTube 📺 channel.