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by Bremenpl
Mon Jul 01, 2019 7:11 pm
Forum: General discussion
Topic: rpi 4 usb c specs
Replies: 9
Views: 552

Re: rpi 4 usb c specs

Yes, this is all a bit dissapointing... But I gues those few components for the full usb C config would cost too much.

Thank you for feedback guys.
by Bremenpl
Mon Jul 01, 2019 10:06 am
Forum: General discussion
Topic: rpi 4 usb c specs
Replies: 9
Views: 552

Re: rpi 4 usb c specs

There is an USB C controller on board: Untitled.jpg This means it supports at least the base PDO level. The question is either it can accepts higher levels (with higher voltages). Is there a buck converter on board? I Cannot find any picture of the board with bottom side shown. EDIT: Ok, nvm, just f...
by Bremenpl
Sun Jun 30, 2019 7:30 am
Forum: General discussion
Topic: rpi 4 usb c specs
Replies: 9
Views: 552

Re: rpi 4 usb c specs

Thanks for answer,
This topics explains about the usb gadget interface, but not about usb c pdo capabilities.
by Bremenpl
Sun Jun 30, 2019 7:08 am
Forum: General discussion
Topic: rpi 4 usb c specs
Replies: 9
Views: 552

rpi 4 usb c specs

Hello there, I was wondering either: Which PDO levels does rpi USB interface support? Can it be powered from 20V (highest level pdo) Does the official usb c charger support only 5V output? Is the actual usb connection functional this time? I mean, does the rpi appear to the host as usb device? I wou...
by Bremenpl
Wed Aug 29, 2018 3:25 pm
Forum: Raspbian
Topic: Drivers for 7 inch waveshare touc screen?
Replies: 5
Views: 657

Re: Drivers for 7 inch waveshare touc screen?

I did not, since the touch doesnt work at all, I thought there is no need for that. Am I wrong?
by Bremenpl
Wed Aug 29, 2018 3:21 pm
Forum: Raspbian
Topic: Drivers for 7 inch waveshare touc screen?
Replies: 5
Views: 657

Re: Drivers for 7 inch waveshare touc screen?

Thabks for answers. The touch should work, as it was working on the previous rpi image on an sd card I found (not sure what version, some old one). Now I installed fresh one and there is bo touch :/.
by Bremenpl
Wed Aug 29, 2018 2:35 pm
Forum: Raspbian
Topic: Drivers for 7 inch waveshare touc screen?
Replies: 5
Views: 657

Drivers for 7 inch waveshare touc screen?

Hello there, I have just downloaded the latest rasbian. Turned it on and updated. Connected this creen: https://www.waveshare.com/wiki/7inch_HDMI_LCD_(B) After applying this to config.txt the screen resolution is correct: max_usb_current=1 hdmi_group=2 hdmi_mode=87 hdmi_cvt 800 480 60 6 0 0 0 hdmi_d...
by Bremenpl
Thu Aug 16, 2018 2:58 pm
Forum: Official Foundation Display
Topic: Official 7' touchscreen, rotate touch
Replies: 22
Views: 8574

Re: Official 7' touchscreen, rotate touch

Could you try a qml based app with -platform eglfs arguments?
by Bremenpl
Wed Aug 15, 2018 6:24 am
Forum: Official Foundation Display
Topic: Official 7' touchscreen, rotate touch
Replies: 22
Views: 8574

Re: Official 7' touchscreen, rotate touch

Thank for answer,
Could you elaborate more? Do you mean in general or just in this example application from youtube video?
by Bremenpl
Wed Aug 15, 2018 4:54 am
Forum: Official Foundation Display
Topic: Official 7' touchscreen, rotate touch
Replies: 22
Views: 8574

Re: Official 7' touchscreen, rotate touch

Hello there, I am posting to let know that the solution provided by @aBUGSworstnightmare earlier doesnt seem to solve my problem fully. Even though When in the "desktop" the pointer works correctly, it stops when used with a Qt application with eglfs platform. Here is a video: https://www.youtube.co...
by Bremenpl
Mon Aug 06, 2018 5:52 pm
Forum: Official Foundation Display
Topic: Official 7' touchscreen, rotate touch
Replies: 22
Views: 8574

Re: Official 7' touchscreen, rotate touch

Anything new?
by Bremenpl
Fri Aug 03, 2018 6:45 am
Forum: Official Foundation Display
Topic: Official 7' touchscreen, rotate touch
Replies: 22
Views: 8574

Re: Official 7' touchscreen, rotate touch

Please let me know if you will need me to test anything regarding this.
by Bremenpl
Fri Aug 03, 2018 5:37 am
Forum: Official Foundation Display
Topic: Official 7' touchscreen, rotate touch
Replies: 22
Views: 8574

Re: Official 7' touchscreen, rotate touch

aBUGSworstnightmare, Your solution did the trick fully. Thank you.
by Bremenpl
Fri Aug 03, 2018 5:23 am
Forum: Official Foundation Display
Topic: Official 7' touchscreen, rotate touch
Replies: 22
Views: 8574

Re: Official 7' touchscreen, rotate touch

Thanks for answers. First I tried out jamesh solution. Unfortunately it doesnt work. At first I tried out this: dtoverlay=rpi-ft5406,touchscreen-swapped-x-y=1 But it didnt help at all, it only flipped x and y with placed making it still work wrong. I went to the README file in /boot/overlays/ direct...
by Bremenpl
Thu Aug 02, 2018 6:19 am
Forum: Graphics programming
Topic: Cross-compilation guide for Qt 5.9.4 and RPi
Replies: 50
Views: 49417

Re: Cross-compilation guide for Qt 5.9.4 and RPi

Hello there, The provided guide allows to run the application with eglfs. Xcb seems to be installed as well but it does not allow to run with it: [email protected]:~ $ ./qopenglwidget -platform xcb QFontDatabase: Cannot find font directory /usr/local/qt5pi/lib/fonts. Note that Qt no longer ships fonts....
by Bremenpl
Wed Aug 01, 2018 3:21 am
Forum: Official Foundation Display
Topic: Official 7' touchscreen, rotate touch
Replies: 22
Views: 8574

Re: Official 7' touchscreen, rotate touch

Anyone please?
by Bremenpl
Tue Jul 31, 2018 5:50 am
Forum: Official Foundation Display
Topic: Official 7' touchscreen, rotate touch
Replies: 22
Views: 8574

Re: Official 7' touchscreen, rotate touch

Same thing.... display_lcd_rotate=2 gives this:

https://youtu.be/ZcdE97d9NI8

Any idea what else could be done?
by Bremenpl
Mon Jul 30, 2018 12:24 pm
Forum: Official Foundation Display
Topic: Official 7' touchscreen, rotate touch
Replies: 22
Views: 8574

Official 7' touchscreen, rotate touch

Hello there, I am using the latest Rasbian image with Rpi 3. I am using the official 7' Rpi touch screen. I can rotate the screen by editing /boot/config.txt (adding display_rotate=x). The problem is, after I rotate the screen, the touch panel doesnt seem to notice that, and it works as it would if ...
by Bremenpl
Sun Aug 13, 2017 8:49 am
Forum: Graphics programming
Topic: Touch screen directed distro
Replies: 0
Views: 958

Touch screen directed distro

Hello there, I was wondering either there is any touch screen dedicated Raspberry Pi distribution of linux? The base pixel is very fine, but is quite hard to navigate there using touch screen. It is more prepared for a mouse and keyboard. I know one can tweak any DE, but I was just wondering either ...
by Bremenpl
Thu Oct 27, 2016 9:27 pm
Forum: Beginners
Topic: rs485 driver
Replies: 0
Views: 306

rs485 driver

Hello there, Raspberry pi has an on board uart accesible from the header. I would like to use it in rs485 mode ith apropropriate transceiver like max485. For this I need additinal DE line to control the flow direction. Is there an rs485 driver for rpi that makes use of one of gpios for this? I would...
by Bremenpl
Sun Jul 07, 2013 5:24 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: SSH stops when GPIO shortcuted to GND
Replies: 12
Views: 1477

Re: SSH stops when GPIO shortcuted to GND

Joan and pjc123 thank you guys. I said no to interrupts and used simple state checking similar to joan's example and everything works well now.

Love this community :).
by Bremenpl
Sun Jul 07, 2013 11:28 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: SSH stops when GPIO shortcuted to GND
Replies: 12
Views: 1477

Re: SSH stops when GPIO shortcuted to GND

Thank you guys, ill try that out 1st time i have the opportunity.
by Bremenpl
Sun Jul 07, 2013 10:12 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: SSH stops when GPIO shortcuted to GND
Replies: 12
Views: 1477

Re: SSH stops when GPIO shortcuted to GND

I didnt really intend to use interrupts, just wanted to check for state in a loop.

I tried wiringpi in the past and didnt like it to be honest. Would you mind showing me an example of a simple state check in a loop using bcm2835?

I would like to check out your library in the next project :)
by Bremenpl
Sun Jul 07, 2013 9:42 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: SSH stops when GPIO shortcuted to GND
Replies: 12
Views: 1477

Re: SSH stops when GPIO shortcuted to GND

This is my connection: https://www.dropbox.com/s/trgj47r5d2kc6zm/2013-07-07%2011.34.33.jpg Now i figured out whats causing the problem but i dont know why, see my code below: // Raspberry pi power script. #include <bcm2835.h> #include <stdio.h> #define ATTINY_RX RPI_GPIO_P1_11 #define ATTINY_TX RPI_...
by Bremenpl
Sat Jul 06, 2013 1:01 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: SSH stops when GPIO shortcuted to GND
Replies: 12
Views: 1477

Re: SSH stops when GPIO shortcuted to GND

Pins P1-11, P1-13, P1-15?
these.

Its in a simple while loop. No interrupts.

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