The BTS7040 is a 2 channel High Side Switch with diagnostic feature, im planning on using 2 of the IC and i dont have extra GPIOs to spare.
The way you read a fault from the BTS7040 is to select a channel from the DSEL and read the current sense pin IS, if there is a fault IS will be at a fixed value (not sure).
The Internal structure of the IS pin look like this taken from page 4 of it sensing datasheet
I can only allocate 2 GPIOs for the two BTS7040, 1 is used for the DSEL of IC and the other for the IS of both IC. I do not mind not knowing which channel and which IC the fault occurs all i need to know is that a fault occured. I am unfamiliar with the structure on how the IS pin is made thus i know nothing if it is possible to share a GPIO and if it is possible how to do it.