Module nrf5x::gpio [−] [src]

GPIO and GPIOTE (task and events), nRF5x-family

Author

Reexports

use core::cell::Cell;
use core::ops::Index;
use core::ops::IndexMut;
use kernel::common::VolatileCell;
use kernel::hil;
use peripheral_registers::GPIO;
use peripheral_registers::GPIO_BASE;

Structs

GPIOPin
GpioteRegisters

The nRF5x doesn't automatically provide GPIO interrupts. Instead, to receive interrupts from a GPIO line, you must allocate a GPIOTE (GPIO Task and Event) channel, and bind the channel to the desired pin. There are 4 channels for the nrf51 and 8 channels for the nrf52. This means that requesting an interrupt can fail, if they are all already allocated.
Port

Constants

GPIOTE_BASE
NUM_GPIOTE

Statics

PORT

Functions

GPIO
GPIOTE
allocate_channel

Allocate a GPIOTE channel
find_channel

Return which channel is allocated to a pin, or -1 if none.