nRF-specific GPIO Flags More...

nRF GPIO drive flags
nRF GPIO drive flags Standard (S) or High (H) drive modes can be applied to both pin levels, 0 or High drive mode will increase current capabilities of the pin (refer to each SoC reference manual). When the pin is configured to operate in open-drain mode (wired-and), the drive mode can only be selected for the 0 level (1 is disconnected). Similarly, when the pin is configured to operate in open-source mode (wired-or), the drive mode can only be set for the 1 level (0 is disconnected). The drive flags are encoded in the 8 upper bits of gpio_dt_flags_t as follows: Bit 8: Drive mode for '0' (0=Standard, 1=High) Bit 9: Drive mode for '1' (0=Standard, 1=High)
#define	NRF_GPIO_DRIVE_S0 (0U << 8U)
	Standard drive for '0' (default, used with GPIO_OPEN_DRAIN)

#define	NRF_GPIO_DRIVE_H0 (1U << 8U)
	High drive for '0' (used with GPIO_OPEN_DRAIN)

#define	NRF_GPIO_DRIVE_S1 (0U << 9U)
	Standard drive for '1' (default, used with GPIO_OPEN_SOURCE)

#define	NRF_GPIO_DRIVE_H1 (1U << 9U)
	High drive for '1' (used with GPIO_OPEN_SOURCE)

#define	NRF_GPIO_DRIVE_S0S1 (NRF_GPIO_DRIVE_S0 \| NRF_GPIO_DRIVE_S1)
	Standard drive for '0' and '1' (default)

#define	NRF_GPIO_DRIVE_S0H1 (NRF_GPIO_DRIVE_S0 \| NRF_GPIO_DRIVE_H1)
	Standard drive for '0' and high for '1'.

#define	NRF_GPIO_DRIVE_H0S1 (NRF_GPIO_DRIVE_H0 \| NRF_GPIO_DRIVE_S1)
	High drive for '0' and standard for '1'.

#define	NRF_GPIO_DRIVE_H0H1 (NRF_GPIO_DRIVE_H0 \| NRF_GPIO_DRIVE_H1)
	High drive for '0' and '1'.