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pimoroni / hyperpixel

Setup for the Pimoroni Hyper Pixel 800x480 pixel multi-touch display
https://shop.pimoroni.com/products/hyperpixel
MIT License
96 stars 28 forks source link

Enable easy switch between hyperpixel and HDMI #32

Closed hoegge closed 1 year ago

hoegge commented 6 years ago

It would be very useful if there was an easy way to disable the display (i.e. enable HDMI again) and enable (when done using HDMI) like a script so you do not have to uninstall every time you need to change display. Would that be easy to do?

Thanks

Gadgetoid commented 6 years ago

There's a good topic about this on our forums, here: https://forums.pimoroni.com/t/hyperpixel-selective-output-eg-on-boot/5193

hoegge commented 6 years ago

Is there any way to use the HDMI as main display and then only use the HyperPixel for dedicated programs? The hyperpixel display is not very suitable for debugging and developing.

tinspin commented 4 years ago

TLDR on the link above is: If you write a 1 to this file /sys/class/backlight/rpi_backlight/bl_power the screen turns off... write a 0 again to turn it on... and this works in realtime! Compared to DPI, HDMI/DVI is just bad! I wish we could get larger DPI screens... Edit; FYI this means you can turn the screen on/off from the keyboard with ZERO latency! Prediction: GPIO is the everything connector/cable of the future if we can handle the electromagnetics! NOT USB! Going even further RxTx (also known as COMM and RS232) is better than I2C and SPI!