I have a BPI-CM4 running Android 9, the official OS for this module. I have installed Termux and Python to create command-line applications and run them as scripts in Linux.
My problem is that I need to interact with I2C devices or GPIO pins, but no matter what I have tried, it hasn't worked. So far, I have attempted to install various libraries like WiringPi, RPi.GPIO, Amlogic-wiringPi, etc., but all of them give me a lot of compilation errors. In the best-case scenario, after resolving those errors, I get the message "This library is made for Raspberry Pi," even though it's a port of the library for use with Banana Pi. I have also tried to install directly in Python with the same issues, and using apt install or pkg,
I cannot find applications in the repositories like i2c-tools. Finally, I managed to install the smbus2 library in Python, but when I perform a write operation to the device, it gives me the error message:
"ioctl(self.fd, I2C_SMBUS, msg). OSError: [Errno 6] No such device or address."
This indicates that the module is not loaded, even though I have the device at /dev/i2c-1. I have tried to install kmod using apt install to have modprobe and other commands that I also don't have, but it doesn't exist...
In summary, I have tried everything. I am even willing to use bash scripts directly, but since I can't find any commands to install either, I don't know how to proceed. I'm feeling quite desperate at this point. Do you have any ideas?
Thank you in advance.