RE: GPIO byte writes

Susheel Nuguru — Fri, 10 Jul 2015 10:01:58 GMT

Hi,

If you are talking about writing 8bits to 8GPIO pins, then using nrf_gpio_port_write will work with same 2-3 cycles write same as writing to a single pin.

Thing to remember is that the ports are pre-selected pins

typedef enum
{
    NRF_GPIO_PORT_SELECT_PORT0 = 0,           ///<  Port 0 (GPIO pin 0-7)
    NRF_GPIO_PORT_SELECT_PORT1,               ///<  Port 1 (GPIO pin 8-15)
    NRF_GPIO_PORT_SELECT_PORT2,               ///<  Port 2 (GPIO pin 16-23)
    NRF_GPIO_PORT_SELECT_PORT3,               ///<  Port 3 (GPIO pin 24-31)
} nrf_gpio_port_select_t;