Ok, I just forced a reset of the CPLD by pulling the 3V3 low for a short period
Unfortunatley, there's no pwm after that, I have to restart the board to get it back working...
Any ideas?
Search found 31 matches
- Fri Aug 17, 2012 6:51 am
- Forum: BeagleBoard&PandaBoard
- Topic: Beadaframe: Display blanks out - PWM to backlight fails
- Replies: 8
- Views: 9573
- Fri Aug 17, 2012 6:26 am
- Forum: BeagleBoard&PandaBoard
- Topic: Beadaframe: Display blanks out - PWM to backlight fails
- Replies: 8
- Views: 9573
Re: Beadaframe: Display blanks out - PWM to backlight fails
After removing that R30, the boards works as before. So, the CPLD should now work without initialization?
- Wed Aug 15, 2012 4:41 am
- Forum: BeagleBoard&PandaBoard
- Topic: Beadaframe: Display blanks out - PWM to backlight fails
- Replies: 8
- Views: 9573
Re: Beadaframe: Display blanks out - PWM to backlight fails
Thank you, I'm going to check that....
- Wed Aug 08, 2012 10:54 pm
- Forum: BeagleBoard&PandaBoard
- Topic: Beadaframe: Display blanks out - PWM to backlight fails
- Replies: 8
- Views: 9573
Re: Beadaframe: Display blanks out - PWM to backlight fails
Hi, we already tried both methods. If we reboot the board (warm start, typing reboot in the console), the pwm is back and the board works fine. Just writing other values to the pwm-beada does not work. It seems that the FPGA resets itself, and that some initial values are missing after that. There a...
- Wed Aug 08, 2012 5:13 am
- Forum: BeagleBoard&PandaBoard
- Topic: Beadaframe: Display blanks out - PWM to backlight fails
- Replies: 8
- Views: 9573
Beadaframe: Display blanks out - PWM to backlight fails
Hi guys, we have an issue with the beadaframe on some devices. Suddenly, the displays blanks out. We tracked the issue down and we found out that there's no more PWM coming from your Altera going to the dc-dc regulator on the display's backside. Everything else works fine, the device is still runnin...
- Fri Mar 23, 2012 11:59 am
- Forum: BeagleBoard&PandaBoard
- Topic: Software keyboard in Android
- Replies: 3
- Views: 5855
Re: Software keyboard in Android
I forgot to mention that forcing the device in the tablet mode will crash the settings menu. That's because there's no ethernet image available for the tablet dpi settings. So don't forget to add one...
- Fri Mar 23, 2012 11:57 am
- Forum: BeagleBoard&PandaBoard
- Topic: Software keyboard in Android
- Replies: 3
- Views: 5855
Re: Software keyboard in Android
The problem is that the current image is in the "phone mode". In order to get the on screen keyboard to be displayed you have to get the device in the tablet mode. As far as I remember you can accomplish that by changing the dpi settings...
- Thu Feb 09, 2012 5:00 am
- Forum: BeagleBoard&PandaBoard
- Topic: Flickering Screen if PWM is adjusted
- Replies: 3
- Views: 5836
Re: Flickering Screen if PWM is adjusted
It starts to flicker more the lower the settings is - below 65 you can easily notice it. And around 50, it is unusable. We already tried different displays and cables. It seems that either the cable is too long or there is some kind of interference between the PWM and other signals.
- Thu Feb 09, 2012 2:03 am
- Forum: BeagleBoard&PandaBoard
- Topic: Flickering Screen if PWM is adjusted
- Replies: 3
- Views: 5836
Flickering Screen if PWM is adjusted
If we set PWM to another value than 100%, the Screen starts to flicker. It also depends if we touch the connection between the extension board and the display itself. Only settings the brightness to 100% seems to fix it - maybe because the display is always on?
- Sun Feb 05, 2012 11:03 pm
- Forum: BeagleBoard&PandaBoard
- Topic: First try of Linaro Android 12.01 Pandaboard
- Replies: 23
- Views: 22996
Re: First try of Linaro Android 12.01 Pandaboard
Do get dvi to work on tracking, you have to apply the following fix (dvi is disabled by intent to favor hdmi 1080p, see https://bugs.launchpad.net/linaro-android/+bug/893000 ): edit arch/arm/mach-omap2/board-omap4panda.c -------------- static struct omap_dss_device *omap4_panda_dss_devices[] = { &om...