[DirectFB or framebuffer]

DirectFB is a abstraction level over initiated framebuffer.

 

Does "sudo ls /dev/fb*" show anything?

How does your display connected?

 

 

[[OPi Plus 2] SPI1 pins]

So sad :(

 

Can I connect 2 displays (small TFT and larger TFT with touch -  actually 3 SPI devices) to SPI0 ?

 

- TFT with touch - https://aliexpress.com/item/3-5-Inch-320-X-480-TFT-LCD-Display-Touch-Board-For-Raspberry-Pi-2-Model/32631471521.html?spm=a2g0v.10010108.1000016/B.1.6be451f6odXBwj&isOrigTitle=true

- small TFT - https://ru.aliexpress.com/item/1-8-inch-SPI-TFT-LCD-Display-Module-ST7735-128x160-51-AVR-STM32-ARM-8-16/32817088094.html?spm=a2g0v.10010108.1000016/B.1.29732a62QrOuol&isOrigTitle=true

[[OPi Plus 2] SPI1 pins]

Sorry, but which pins  PA15 and PA16 on th scheme above?

 

4 minutes ago, martinayotte said:

To go around that, you would need to tweak DT

 

Can you give a point to start to?

[[OPi Plus 2] SPI1 pins]

Need to have working both SPI0 and SPI1 on Orange Pi Plus 2.

           Linux orange 4.14.40-sunxi #155 SMP Sat May 12 11:12:46 CEST 2018 armv7l armv7l armv7l GNU/Linux

           ARMBIAN 5.44.180510 nightly Ubuntu 16.04.4 LTS 4.14.40-sunxi

 

SPI Double overlay installed (https://github.com/armbian/sunxi-DT-overlays/blob/master/examples/spi-double-spidev-bus.dts)

I can see both spi's

        ls /dev/spi*

            /dev/spidev0.0
            /dev/spidev1.0

I know all SPI0 pins -  19, 21, 23, 24

SPI1 pin CS = 8, CLK = 10 but what is MOSI and MISO?

How do I know where they are (or even select) ?

 

 

 

[(OPi Plus 2) GPIO 3.3v decreasing to 1.6v]

When 40pin female-female cable connected to my Orange Pi Plus 2 GPIO voltage on pin1 decreasing from 3.3v to ~ 1.6v

 

WAIDW?

 

Spoiler