nRF52 address of single pin's input/output register

[Gordon]

Hi,

On STM32 and some other platforms I'm able to get an address that I can write to in order to set the value of a single pin. While (like on nRF) there is one output register per bank of pins, you can use bit banding to get an address that'll change just a single pin at once. I notice from the datasheet that it seems bit banding isn't implemented - is there another way of getting an address that is associated with a single pin?

While not the end of the world if not, I target a few different platforms and I have a 'fast path' for some operations if a pin can be accessed by address alone. It'd be nice to be able to use those fast paths on nRF52.

thanks!

[FormerMember]

The easiest way to read/write to one GPIO is to use the abstraction layer provided in nrf_gpio.h. 

As you already know each pin doesn't have it's own address, but  it is "merged" into the 32-bit register value for all pins. 

 

[Gordon]

Ok, so to be clear - there is no way whatsoever of getting a single address to write to/read from?

[RK]

Yes there is no bitbanding on the nRF series chips. They are only mapped as bits in the 32 bit PORT registers. There is no way of getting one single address to read/write from for a single pin.