i2cdev check if the port is installed

[dizcza]

I'm juggling with i2cdev non-ported libs alongside i2cdev-ported ones.
Being unable to check if the i2c port is installed in i2cdev makes

E (00:00:04.763) i2c: i2c_driver_delete(441): i2c driver install error

errors. To workaround this, I store a bool variable and change it to true if at least one of the i2cdev-ported library commands is issued and therefore an i2c port is configured. It's a bad practice and prone to errors.

I'd like to see a method

bool i2cdev_port_installed(i2c_port_t port);

[dizcza]

It's a bad practice and error-prone because now the logic relies on the intrinsic implementation of i2cdev commands which are hidden from the user.