RE: Reconfigure GPIO pins during runtime

Fran89 — Wed, 16 Jun 2021 18:46:44 GMT

Thank you very much for your answer. Although it doesn't really address the question I posed, it can be helpful for someone else. I will verify is as correct and close the topic.

RE: Reconfigure GPIO pins during runtime

hmolesworth — Wed, 02 Jun 2021 16:15:08 GMT

One of the advantages of using a multiple-register set/reset/port scheme is that up to 32-bits of an i/o port can simultaneously be written in any combination with a single instruction. gpio_pin_toggle() and other similar port functions hide this advantage by using a single pin number as a parameter, like older simpler cpus; however you can instead use something like nrf_gpio_port_out_write() which takes any combination of the 32 pins including changing 2 pins from low to high and vice versa with a single instruction by using a 32-bit mask. Underneath this instruction is P0.OUTCLR = mask.

Search for the definition in nrf_gpio.c and write new function gpio_port_toggle() which takes a mask as a parameter, or simply use the low-level instruction directly.

Off topic - I concur