We are using the STM32H745I-DISCO and built a daughter board that uses the Arduino Connector and ports on that connector. Unfortunately, we discovered that at least two of the ports (SDA/D14 on Pin 9 and SCL/D15 on Pin 10 of CN2), are being used by the display, so they are NOT usable to us. We are wondering why they designed it so that those ports are brought out to CN2. There are other I2C signals available CN7. Why did they not bring out other processor ports that could be used on CN2 that are not committed to the display or other integral function of the DISCO Board? Fortunately we have just two unused ports on other connectors so we can cut and jumper a fix, but it seems this is something ST should look at for the future.
