Thanks for help in SPI, UART with Android 9 Pie!
We installed an Android Module for supporting UART_B and UART_C an VIM3 boards,
using C++ and CMake to communicate with the included Linux UART- Driver.
Module works with all three UART’s ttyS1, ttyS2, and ttyS3.
This part is (was) not so easy to realise.
To change something in .dts file is very easy but before you can do this,
you have to download round about 250 GB Sourcecode + 150 GB extra
diskspace for recompiling this code. Download needs around 8…10 hours
and one compiling approximately 6…8 hours, to get a new Android image.
Result, it works…!
Now, my last question, maybe you can help again…?
We wont use PIN 37 GPIOH_4 of VIM3’s 40 PIN connector as Output PIN.
Is this possible, is this PIN 37 aktuell defined as GPIO PIN under Android 9.
We searched for an easy example, but we didn’t find some.
Thanks for help again.