I tryed to control BPI GPIOs by this code but I got some errors while setting pins 27, 28 as output. error: ValueError: The channel sent is invalid on a Raspberry Pi
Is it possible to use this pins as GPIO?
I tryed to control BPI GPIOs by this code but I got some errors while setting pins 27, 28 as output. error: ValueError: The channel sent is invalid on a Raspberry Pi
Is it possible to use this pins as GPIO?
pin 27, 28 are set as i2c1 functions, two ways to change them to normal gpio,
modify sunxi-pack/sun8iw7p1/configs/BPI-M2Z-720P/sys_config.fex, set property twi1_used = 0
in twi1 node. then rebuild the bsp code and update to image.
Update the “twi1_used” propery in uboot command line via fdt command, please refer to this guide for how to use fdt command.
Thanks for your reply I am trying 2nd method and I read mentioned link, but now I don’t know where can I update “twi1_used”. Thanks in advance