Device Tree • Re: MCP23017 overlay error -EIO: can't write IOCON 32

Code:

GPPUA = 0x0C  # Pull-up resistors for port AGPPUB = 0x0D  # Pull-up resistors for port B# Enable pull-up resistors on port Ai2c.write_byte_data(MCP23017_ADDRESS, GPPUA, 0xFF)# Enable pull-up resistors on port Bi2c.write_byte_data(MCP23017_ADDRESS, GPPUB, 0xFF)