i want to add a new pca9555 chip which is iic device. the device address is 0x20. and i wrote a driver like hmc5883l, when i wrote a register value, the I2CDevice.cpp/transfer() function shows “I2C: not owner of 0xFF2009 for addr 0x20”, is there any problem? i can post my files if needed.
my device type: 0xff, address: 0x20, bus type:0x01(iic), bus number:0x01