toggle GPIO as fast as possible

[weightwatcherphil]

I want to use C code to toggle the GPIO lines as fast as possible in C.  I do not want to use any libraries.

[John]

You could do this in a loop:

NRF_GPIO->OUTSET = (1UL << pin_number);

NRF_GPIO->OUTCLR = (1UL << pin_number);

Blatantly stolen from nrf_gpio.h

[weightwatcherphil]

thanks.