[rapjr9]

I see this as a failing of microprocessor design. I/O should be standardized and there should be high level API's that do not change across chips or companies. MCU's are intentionally fragile in this respect to try to lock buyers into one MCU product family. It is absolutely stupid that I/O ports work differently for different MCU's and don't use a common API. It means every designer always has to reinvent the wheel when moving to a new MCU. This must have had a huge negative effect on product reliability and innovation. It's also why many products have moved to using Arduino's.

There is also a huge lack of improvement in MCU designs. Why doesn't my SPI bus autonegotiate everything? Why can't the serial port do the same? This should all be available in hardware as a standard feature of the ports. What a waste of decades of engineering talent to have to repeatedly troubleshoot everything at the bit level.

[BenjiWiebe]

Thank goodness they don't all use a standardized design. What if the standard design was the wrong one? You couldn't switch to a competitor with a better design!