Hi,
I have a INA219 connected to a Nucleo-F401RE. The address pins of the INA219 are both connected to GND. This should result in a I2C address of 0x40 if I am not mistaken. When I run a I2C scan on my Nucleo-F401RE (after setting it to 7-bit address mode), there are two adresses being reported, 0x00 and 0x40. How can two addresses be reported for the INA219 when there is only one device connected?
My code uses the 0x40 address to communicate with the INA219 over I2C. This operation works fine and I am able to read and write to the registers.
Thank you for your time and response.