CM-FX6: Android: Operating instructions - Revision history

Nadav at 13:59, 4 November 2014

2014-11-04T13:59:21Z

Nadav at 08:34, 24 April 2014

2014-04-24T08:34:19Z

Nadav at 08:19, 24 April 2014

2014-04-24T08:19:08Z

Nadav at 06:06, 6 April 2014

2014-04-06T06:06:17Z

Nadav: New page: = Overview = This page contains information useful for day-to-day operating of CM-FX6 Android package. === Display configuration === By default CM-FX6 is configured to use HDMI display wi...

2014-04-06T06:05:21Z

New page: = Overview = This page contains information useful for day-to-day operating of CM-FX6 Android package. === Display configuration === By default CM-FX6 is configured to use HDMI display wi...

New page

= Overview =
This page contains information useful for day-to-day operating of CM-FX6 Android package.

=== Display configuration ===
By default CM-FX6 is configured to use HDMI display with 1080p resolution. 
This setting can be overridden by providing alternate boot arguments to the Android/Linux kernel.
* Connect to the serial console as explained in the [[CM-FX6: Android: Serial console connection | Development]] section.
* Press ENTER to stop the countdown.
<pre>
setenv videomode video=mxcfb0:dev=hdmi,if=RGB24,1920x1080M@60 video=mxcfb1:off video=mxcfb2:off video=mxcfb3:off # default video mode (HDMI)
setenv videomode video=mxcfb0:dev=dvi,if=RGB24,1920x1080M@60 video=mxcfb1:off video=mxcfb2:off video=mxcfb3:off # DVI display with 1080p resolution
setenv videomode video=mxcfb0:dev=dvi,if=RGB24,1280x1024M@60 video=mxcfb1:off video=mxcfb2:off video=mxcfb3:off # DVI display with 1280x1024 resolution
setenv videomode video=mxcfb0:dev=lcd,if=RGB24,KD050C-WVGA video=mxcfb1:off video=mxcfb2:off video=mxcfb3:off # Startek 800x480 LCD
</pre>
* Type in '''boot''' to proceed to kernel boot overriding default video mode.

=== ON/OFF button ===
'''ON/OFF''' button suspends and resumes CM-FX6 operation (i.e. sends to sleep / wakes up), whenever suspend is not disabled manually, or by Android policy. 
Pressing and holding the '''ON/OFF''' button for more than 5 seconds, will unconditionally power the module down. This operation is pretty much equivalent to unplugging the power supply, so it should really be considered the last resort.

=== Graceful shutdown ===
Due to specifics of i.MX6 SoC hardware, the ON/OFF button cannot be used to bring up the Android '''Power off''' menu. 
CM-FX6 pre-configures GPIO 29 (P18, pin 2 on SB-FX6 base board) as GPIO Power Button. As GPIO 29 has an internal pull-up resistor, it can be momentarily connected to the ground to produce a 'power button press'. Short press will behave identically to short press on ON/OFF button, whereas long press will bring up the '''Power off''' menu allowing graceful shutdown.

=== Security ===
CM-FX6 Android package permits full root access. 
The '''su''' utility will switch a user to '''root''' not requiring any credentials or password. 
In order to harden system security one might replace '''su''' implementation or remove it altogether.

=== Start-up script ===
'''/system/etc/install-recovery.sh''' script is run upon system boot by Android ''init'' process. 
As ''system'' partition is mounted 'read-only', one should remount ''system'' 'rw', prior to attempting to edit the script.

== For devices running Ice Cream Sandwich ==

=== Networking ===
Normally, when both networking interfaces are enabled (Ethernet, Wi-Fi), CM-FX6 Android will tear Wi-Fi down preferring Ethernet. 
In order to override this policy, enabling Ethernet and Wi-Fi co-existence, proceed to the console, and type in:
<pre>
# setprop compulab.net.disable_policy true # (or 'y', or '1')
</pre>

=== S/PDIF audio ===
Normally, Android audio streams to HDMI or analog audio codec according to configuration. 
In order to switch audio output to S/PDIF, proceed to the console, and type in:
<pre>
# setprop compulab.audio.spdif 1
</pre>

@@ Line 1: / Line 1: @@
 = Overview =
-This page contains information useful for day-to-day operating of CM-FX6 Android package.
+Most CM-FX6 [http://www.compulab.co.il/products/operating-systems-and-drivers-for-cm-fx6-and-sbc-fx6 supported features] are operated using normal Android controls.<br/>
 === Display configuration ===
 By default CM-FX6 is configured to use HDMI display with 1080p resolution.<br/>
@@ Line 15: / Line 17: @@
 </pre>
 * Type in '''boot''' to proceed to kernel boot overriding default video mode.
 === ON/OFF button ===
@@ Line 33: / Line 60: @@
 === Start-up script ===
-'''/system/etc/install-recovery.sh''' script is run upon system boot by Android ''init'' process.<br/>
+'''/system/etc/install-recovery.sh''' script is run upon system boot by Android ''init'' process with ''root'' permissions.<br/>
 As ''system'' partition is mounted 'read-only', one should remount ''system'' 'rw', prior to attempting to edit the script.
-== Devices running Ice Cream Sandwich only ==
+=== Networking ===
-=== Networking ===
+=== Audio sink selection ===
-Normally, when both networking interfaces are enabled (Ethernet, Wi-Fi), CM-FX6 Android will tear Wi-Fi down preferring Ethernet.<br/>
+CM-FX6 may use either one of the following audio devices:
-In order to override this policy, enabling Ethernet and Wi-Fi co-existence, proceed to the console, and type in:
+* '''HDMI''' - default when HDMI video is selected, and totally inaccessible otherwise
-<pre>
+* '''analog''' - default when DVI video is selected
-# setprop compulab.net.disable_policy true    # (or 'y', or '1')
+* '''S/PDIF'''
-</pre>
+Audio sink selection should be done with a designated application, e.g. ''SoundAbout'', available via Google Play Store.<br/>
-=== S/PDIF audio ===
+{| class="wikitable" border="1" cellspacing="0"
-Normally, Android audio streams to HDMI or analog audio codec according to configuration.<br/>
+! audio device
-In order to switch audio output to S/PDIF, proceed to the console, and type in:
+! sink name
-<pre>
+|-
-# setprop compulab.audio.spdif 1
+| HDMI
-</pre>
+| Aux Digital (HDMI)
 [[Category:Android]]
 [[Category:CM-FX6]]

@@ Line 24: / Line 24: @@
 CM-FX6 pre-configures GPIO 29 (P18, pin 2 on SB-FX6 base board) as GPIO Power Button. As GPIO 29 has an internal pull-up resistor, it can be momentarily connected to the ground to produce a ''power button press''. Short press will behave identically to short press on ON/OFF button, whereas long press will bring up the '''Power off''' menu allowing graceful shutdown.
-=== Physical BACK button ===
+=== Physical HOME button ===
-GPIO 205 (GPIO7_13) is pre-programmed as hadware BACK key.
+GPIO 205 (GPIO7_13) is pre-programmed as hadware HOME key.
 === Security ===

← Older revision		Revision as of 06:06, 6 April 2014
Line 47:		Line 47:
	# setprop compulab.audio.spdif 1		# setprop compulab.audio.spdif 1
	</pre>		</pre>
		+
		+
		+	[[Category:Android]]
		+	[[Category:CM-FX6]]

@@ Line 11: / Line 11: @@
 setenv videomode video=mxcfb0:dev=dvi,if=RGB24,1920x1080M@60 video=mxcfb1:off video=mxcfb2:off video=mxcfb3:off     # DVI display with 1080p resolution
 setenv videomode video=mxcfb0:dev=dvi,if=RGB24,1280x1024M@60 video=mxcfb1:off video=mxcfb2:off video=mxcfb3:off     # DVI display with 1280x1024 resolution
 setenv videomode video=mxcfb0:dev=lcd,if=RGB24,KD050C-WVGA video=mxcfb1:off video=mxcfb2:off video=mxcfb3:off       # Startek 800x480 LCD
 </pre>
@@ Line 21: / Line 22: @@
 === Graceful shutdown ===
 Due to specifics of i.MX6 SoC hardware, the ON/OFF button cannot be used to bring up the Android '''Power off''' menu.<br/>
-CM-FX6 pre-configures GPIO 29 (P18, pin 2 on SB-FX6 base board) as GPIO Power Button. As GPIO 29 has an internal pull-up resistor, it can be momentarily connected to the ground to produce a 'power button press'. Short press will behave identically to short press on ON/OFF button, whereas long press will bring up the '''Power off''' menu allowing graceful shutdown.
+CM-FX6 pre-configures GPIO 29 (P18, pin 2 on SB-FX6 base board) as GPIO Power Button. As GPIO 29 has an internal pull-up resistor, it can be momentarily connected to the ground to produce a ''power button press''. Short press will behave identically to short press on ON/OFF button, whereas long press will bring up the '''Power off''' menu allowing graceful shutdown.
 === Security ===
@@ Line 32: / Line 36: @@
 As ''system'' partition is mounted 'read-only', one should remount ''system'' 'rw', prior to attempting to edit the script.
-== For devices running Ice Cream Sandwich ==
+== Devices running Ice Cream Sandwich only ==
 === Networking ===