periph_cpu_common.h File Reference

nRF5x common definitions for handling peripherals More...

Detailed Description

nRF5x common definitions for handling peripherals

Author

Hauke Petersen hauke.nosp@m..pet.nosp@m.ersen.nosp@m.@fu-.nosp@m.berli.nosp@m.n.de

Definition in file periph_cpu_common.h.

#include "cpu.h"

Include dependency graph for periph_cpu_common.h:

Go to the source code of this file.

Data Structures
struct	timer_conf_t
	Timer configuration. More...

Macros
#define	CPUID_ADDR   (&NRF_FICR->DEVICEID[0])
	Starting offset of CPU_ID.
#define	CPUID_LEN   (8U)
	Length of the CPU_ID in octets.

Functions
uint8_t	gpio_int_get_exti (gpio_t pin)
	Retrieve the exti(GPIOTE) channel associated with a gpio. More...

Override macro for defining GPIO pins
The port definition is used (and zeroed) to suppress compiler warnings
#define	GPIO_PIN(x, y)   ((x & 0) | y)
#define	GPIO_UNDEF   (UINT8_MAX)
	Override GPIO_UNDEF value.
#define	GPIO_MODE(oe, ic, pr, dr)   (oe | (ic << 1) | (pr << 2) | (dr << 8))
	Generate GPIO mode bitfields. More...
#define	SPI_HWCS(x)   (SPI_CS_UNDEF)
	No support for HW chip select...
#define	PERIPH_SPI_NEEDS_INIT_CS
	Declare needed shared SPI functions.
#define	PERIPH_SPI_NEEDS_TRANSFER_BYTE
#define	PERIPH_SPI_NEEDS_TRANSFER_REG
#define	PERIPH_SPI_NEEDS_TRANSFER_REGS

WDT upper and lower bound times in ms
#define	NWDT_TIME_LOWER_LIMIT   (1)
#define	NWDT_TIME_UPPER_LIMIT   ((UINT32_MAX >> 15) * US_PER_MS + 1)

Macro Definition Documentation

GPIO_MODE

#define GPIO_MODE	(		oe,
			ic,
			pr,
			dr
	)		(oe | (ic << 1) | (pr << 2) | (dr << 8))

Generate GPIO mode bitfields.

We use 4 bit to encode the pin mode:

• bit 0: output enable
• bit 1: input connect
• bit 2+3: pull resistor configuration
• bit 8+9+10: drive configuration

Definition at line 71 of file periph_cpu_common.h.

Function Documentation

gpio_int_get_exti()

uint8_t gpio_int_get_exti

(

gpio_t

pin

)

Retrieve the exti(GPIOTE) channel associated with a gpio.

Parameters

pin	GPIO pin to retrieve the channel for

Returns

the channel number

0xff if no channel is found