lakka patch & safe shutdown script & audio fix

GPi_Case2_patch_lakka3.6/install_patch.bat

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+@echo off
+
+set Pan=.\
+set OrgFolder=original_files\
+set OverlaysFolder=overlays\
+set ConfigFile=config.txt
+set Dpi24File=dpi24.dtbo
+
+if exist %Pan%%OrgFolder%%ConfigFile% (		
+	echo config.txt is backuped
+) else (
+	copy .\..\config.txt .\original_files\config.txt
+)
+
+::if exist %Pan%%OrgFolder%%OverlaysFolder%%Dpi24File% (		
+::	echo dpi24.dtbo is backuped
+::) else (
+::	copy .\..\overlays\dpi24.dtbo .\original_files\overlays\dpi24.dtbo
+::)
+
+copy .\patch_files\config.txt .\..\config.txt
+copy .\patch_files\config_lcd.txt .\..\config_lcd.txt
+copy .\patch_files\config_hdmi.txt .\..\config_hdmi.txt
+::copy .\patch_files\overlays\dpi24.dtbo .\..\overlays\dpi24.dtbo
+::copy .\patch_files\overlays\pwm-audio-pi-zero.dtbo .\..\overlays\pwm-audio-pi-zero.dtbo
+
+echo .
+echo -----------------------Successful configuration-----------------------
+echo .
+
+
+pause

GPi_Case2_patch_lakka3.6/patch_files/config.txt

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+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright (C) 2009-2014 Stephan Raue ([email protected])
+# Copyright (C) 2016-present Team LibreELEC (https://libreelec.tv)
+################################################################################
+# Bootloader configuration - config.txt
+################################################################################
+
+################################################################################
+# Memory (System/GPU configuration )
+################################################################################
+
+# Default GPU memory split - at least 288M is needed for some 4k HEVC files
+gpu_mem=384
+
+################################################################################
+# For overclocking and various other settings, see:
+# https://www.raspberrypi.org/documentation/configuration/config-txt.md
+################################################################################
+# Set 'force_turbo=1' to disable dynamic overclocking and enable overclocking always.
+force_turbo=0
+
+# Force HDMI even if unplugged or powered off
+# hdmi_force_hotplug=1
+
+# Doesn't sent initial active source message.
+# Avoids bringing CEC (enabled TV) out of standby and channel switch when
+# rebooting.
+hdmi_ignore_cec_init=1
+
+################################################################################
+# End of default configuration
+################################################################################
+
+# Choose between DVI and HDMI output
+# 1 = DVI mode (no sound)
+# 2 = HDMI mode (sound will be sent if supported and enabled)
+# hdmi_drive=2
+
+################################################################################
+# Include distribution specific config file if it exists.
+################################################################################
+[all]
+# Enable DRM VC4 V3D driver on top of the dispmanx display stack
+# Preferred 'Full' Kernel Mode Setting (KMS)
+# dtoverlay=vc4-kms-v3d-pi4
+# Optional 'Fake' KMS for displays that won't work with 'Full' KMS
+dtoverlay=vc4-fkms-v3d
+
+dtoverlay=rpivid-v4l2
+disable_overscan=1
+disable_splash=1
+dtparam=audio=on
+hdmi_max_pixel_freq:0=200000000
+hdmi_max_pixel_freq:1=200000000
+arm_64bit=1
+kernel=kernel.img
+
+# if you plug your tv at the same time as your rpi and that the rpi switches from the hdmi or give a low resolution because tv had no enough time to initialize it
+# boot_delay=3
+
+# uncomment if you have slow sound issues on composite output
+#audio_pwm_mode=0
+
+# enable UART (required for for retroflag)
+# affect rpi performances
+# enable_uart=1
+
+# activate USB sockets
+dtoverlay=dwc2,dr_mode=host
+
+# Ensure only one display output can be used on the Pi4
+max_framebuffers=1
+
+[DPI]
+# Put any DPI required display code here
+# i.e. Official 7" DSI Raspberry Pi Touch Display for 'Full' KMS
+#ignore_lcd=1
+#dtoverlay=vc4-kms-dsi-7inch
+display_rotate=0
+dtoverlay=dpi24
+overscan_left=0
+overscan_right=0
+overscan_top=0
+overscan_bottom=0
+framebuffer_width=640
+framebuffer_height=480
+#framebuffer_depth=8
+enable_dpi_lcd=1
+display_default_lcd=1
+dpi_group=2
+dpi_mode=87
+dpi_output_format=0x00016
+hdmi_timings=640 0 41 40 41 480 0 18 9 18 0 0 0 60 0 24000000 1   #80hz
+#hdmi_timings=640 0 20 1 20 480 0 1 1 2 0 0 0 60 0 24000000 1  #59hz
+

GPi_Case2_patch_lakka3.6/patch_files/config_hdmi.txt

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+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright (C) 2009-2014 Stephan Raue ([email protected])
+# Copyright (C) 2016-present Team LibreELEC (https://libreelec.tv)
+################################################################################
+# Bootloader configuration - config.txt
+################################################################################
+
+################################################################################
+# Memory (System/GPU configuration )
+################################################################################
+
+# Default GPU memory split - at least 288M is needed for some 4k HEVC files
+gpu_mem=384
+
+################################################################################
+# For overclocking and various other settings, see:
+# https://www.raspberrypi.org/documentation/configuration/config-txt.md
+################################################################################
+# Set 'force_turbo=1' to disable dynamic overclocking and enable overclocking always.
+force_turbo=0
+
+# Force HDMI even if unplugged or powered off
+# hdmi_force_hotplug=1
+
+# Doesn't sent initial active source message.
+# Avoids bringing CEC (enabled TV) out of standby and channel switch when
+# rebooting.
+hdmi_ignore_cec_init=1
+
+################################################################################
+# End of default configuration
+################################################################################
+
+# Choose between DVI and HDMI output
+# 1 = DVI mode (no sound)
+# 2 = HDMI mode (sound will be sent if supported and enabled)
+# hdmi_drive=2
+
+################################################################################
+# Include distribution specific config file if it exists.
+################################################################################
+[all]
+include distroconfig.txt
+
+# activate USB sockets
+dtoverlay=dwc2,dr_mode=host

GPi_Case2_patch_lakka3.6/patch_files/config_lcd.txt

@@ -0,0 +1,95 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright (C) 2009-2014 Stephan Raue ([email protected])
+# Copyright (C) 2016-present Team LibreELEC (https://libreelec.tv)
+################################################################################
+# Bootloader configuration - config.txt
+################################################################################
+
+################################################################################
+# Memory (System/GPU configuration )
+################################################################################
+
+# Default GPU memory split - at least 288M is needed for some 4k HEVC files
+gpu_mem=384
+
+################################################################################
+# For overclocking and various other settings, see:
+# https://www.raspberrypi.org/documentation/configuration/config-txt.md
+################################################################################
+# Set 'force_turbo=1' to disable dynamic overclocking and enable overclocking always.
+force_turbo=0
+
+# Force HDMI even if unplugged or powered off
+# hdmi_force_hotplug=1
+
+# Doesn't sent initial active source message.
+# Avoids bringing CEC (enabled TV) out of standby and channel switch when
+# rebooting.
+hdmi_ignore_cec_init=1
+
+################################################################################
+# End of default configuration
+################################################################################
+
+# Choose between DVI and HDMI output
+# 1 = DVI mode (no sound)
+# 2 = HDMI mode (sound will be sent if supported and enabled)
+# hdmi_drive=2
+
+################################################################################
+# Include distribution specific config file if it exists.
+################################################################################
+[all]
+# Enable DRM VC4 V3D driver on top of the dispmanx display stack
+# Preferred 'Full' Kernel Mode Setting (KMS)
+# dtoverlay=vc4-kms-v3d-pi4
+# Optional 'Fake' KMS for displays that won't work with 'Full' KMS
+dtoverlay=vc4-fkms-v3d
+
+dtoverlay=rpivid-v4l2
+disable_overscan=1
+disable_splash=1
+dtparam=audio=on
+hdmi_max_pixel_freq:0=200000000
+hdmi_max_pixel_freq:1=200000000
+arm_64bit=1
+kernel=kernel.img
+
+# if you plug your tv at the same time as your rpi and that the rpi switches from the hdmi or give a low resolution because tv had no enough time to initialize it
+# boot_delay=3
+
+# uncomment if you have slow sound issues on composite output
+#audio_pwm_mode=0
+
+# enable UART (required for for retroflag)
+# affect rpi performances
+# enable_uart=1
+
+# activate USB sockets
+dtoverlay=dwc2,dr_mode=host
+
+# Ensure only one display output can be used on the Pi4
+max_framebuffers=1
+
+[DPI]
+# Put any DPI required display code here
+# i.e. Official 7" DSI Raspberry Pi Touch Display for 'Full' KMS
+#ignore_lcd=1
+#dtoverlay=vc4-kms-dsi-7inch
+display_rotate=0
+dtoverlay=dpi24
+overscan_left=0
+overscan_right=0
+overscan_top=0
+overscan_bottom=0
+framebuffer_width=640
+framebuffer_height=480
+#framebuffer_depth=8
+enable_dpi_lcd=1
+display_default_lcd=1
+dpi_group=2
+dpi_mode=87
+dpi_output_format=0x00016
+hdmi_timings=640 0 41 40 41 480 0 18 9 18 0 0 0 60 0 24000000 1   #80hz
+#hdmi_timings=640 0 20 1 20 480 0 1 1 2 0 0 0 60 0 24000000 1  #59hz
+

GPi_Case2_patch_lakka3.6/uninstall_patch.bat

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+@echo off
+
+set Pan=.\
+set UpFolder=..\
+set OrgFolder=original_files\
+set OverlaysFolder=overlays\
+set ConfigFile=config.txt
+set Dpi24File=dpi24.dtbo
+set PwmAudiFile=pwm-audio-pi-zero.dtbo
+
+if exist %Pan%%OrgFolder%%ConfigFile% (		
+	copy .\original_files\config.txt .\..\config.txt
+) else (
+	echo .\original_files\config.txt is not exist
+)
+
+::if exist %Pan%%OrgFolder%%OverlaysFolder%%Dpi24File% (		
+::	copy  .\original_files\overlays\dpi24.dtbo .\..\overlays\dpi24.dtbo
+::	echo .
+::	echo -----------------------Successful configuration-----------------------
+::	echo .
+::) else (
+::	echo .\original_files\overlays\dpi24.dtbo is not exist
+::)
+
+::if exist %Pan%%UpFolder%%OverlaysFolder%%PwmAudiFile% (		
+::	del .\..\overlays\pwm-audio-pi-zero.dtbo
+::) 
+if exist %Pan%%UpFolder%%ConfigHDMIFile% (		
+	del .\..\config_hdmi.txt
+	del .\..\config_lcd.txt
+) 
+	echo .
+	echo -----------------------Successful configuration-----------------------
+	echo .
+
+pause

lakka_SafeShutdown_gpi2.py

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+import RPi.GPIO as GPIO
+import os
+import time
+from multiprocessing import Process
+
+#initialize pins
+#powerPin = 3 #pin 5
+#ledPin = 14 #TXD
+#resetPin = 2 #pin 13
+#powerenPin = 4 #pin 5
+
+powerPin = 26 
+powerenPin = 27 
+
+#initialize GPIO settings
+def init():
+	GPIO.setmode(GPIO.BCM)
+	GPIO.setup(powerPin, GPIO.IN, pull_up_down=GPIO.PUD_UP)
+	GPIO.setup(powerenPin, GPIO.OUT, initial=GPIO.HIGH)
+	GPIO.output(powerenPin, GPIO.HIGH)
+	GPIO.setwarnings(False)
+
+#waits for user to hold button up to 1 second before issuing poweroff command
+def poweroff():
+	while True:
+		#self.assertEqual(GPIO.input(powerPin), GPIO.LOW)
+		GPIO.wait_for_edge(powerPin, GPIO.FALLING)
+		#start = time.time()
+		#while GPIO.input(powerPin) == GPIO.HIGH:
+		#	time.sleep(0.5)
+		os.system("systemctl stop retroarch")
+		time.sleep(1)
+		os.system("systemctl poweroff")
+
+def lcdrun():
+	while True:
+		os.system("sh /storage/.RetroFlag/lcdnext.sh")
+		time.sleep(1)
+
+def audiofix():
+	while True:
+		time.sleep(0.5)
+		os.system("systemctl restart retroarch")
+		break
+
+if __name__ == "__main__":
+	#initialize GPIO settings
+	init()
+	#create a multiprocessing.Process instance for each function to enable parallelism 
+	powerProcess = Process(target = poweroff)
+	powerProcess.start()
+	lcdrunProcess = Process(target = lcdrun)
+	lcdrunProcess.start()
+	audiofixProcess = Process(target = audiofix)
+	audiofixProcess.start()
+
+	powerProcess.join()
+	lcdrunProcess.join()
+	audiofixProcess.join()
+
+	GPIO.cleanup()