periph_cpu.h File Reference

nRF52 specific definitions for handling peripherals More...

Detailed Description

nRF52 specific definitions for handling peripherals

Author

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

Philipp-Alexander Blum phili.nosp@m.pp-b.nosp@m.lum@j.nosp@m.akik.nosp@m.u.de

Definition in file periph_cpu.h.

#include "periph_cpu_common.h"

Include dependency graph for periph_cpu.h:

Go to the source code of this file.

#define	CLOCK_CORECLOCK   (64000000U)
	System core clock speed, fixed to 64MHz for all NRF52x CPUs.

Peripheral clock speed (fixed to 16MHz for nRF52 based CPUs)
#define	PERIPH_CLOCK   (16000000U)
#define	ADC_NUMOF   (9U)
	The nRF52 family of CPUs provides a fixed number of 9 ADC lines.
#define	UART_TXBUF_SIZE   (64)
	Size of the UART TX buffer for non-blocking mode.
enum	{   NRF52_AIN0 = 0 , NRF52_AIN1 = 1 , NRF52_AIN2 = 2 , NRF52_AIN3 = 3 ,   NRF52_AIN4 = 4 , NRF52_AIN5 = 5 , NRF52_AIN6 = 6 , NRF52_AIN7 = 7 ,   NRF52_VDD = 8 }
	nRF52 specific naming of ADC lines (for convenience) More...
typedef void(*	spi_twi_irq_cb_t) (void *arg)
	Common SPI/I2C interrupt callback. More...
void	spi_twi_irq_register_spi (NRF_SPIM_Type *bus, spi_twi_irq_cb_t cb, void *arg)
	Register a SPI IRQ handler for a shared I2C/SPI irq vector. More...
void	spi_twi_irq_register_i2c (NRF_TWIM_Type *bus, spi_twi_irq_cb_t cb, void *arg)
	Register a I2C IRQ handler for a shared I2C/SPI irq vector. More...
void	nrf5x_i2c_acquire (NRF_TWIM_Type *bus, spi_twi_irq_cb_t cb, void *arg)
	Acquire the shared I2C/SPI peripheral in I2C mode. More...
void	nrf5x_i2c_release (NRF_TWIM_Type *bus)
	Release the shared I2C/SPI peripheral in I2C mode. More...
void	nrf5x_spi_acquire (NRF_SPIM_Type *bus, spi_twi_irq_cb_t cb, void *arg)
	Acquire the shared I2C/SPI peripheral in SPI mode. More...
void	nrf5x_spi_release (NRF_SPIM_Type *bus)
	Acquire the shared I2C/SPI peripheral in SPI mode. More...

Typedef Documentation

spi_twi_irq_cb_t

typedef void(* spi_twi_irq_cb_t) (void *arg)

Common SPI/I2C interrupt callback.

Parameters

arg	Opaque context pointer

Definition at line 92 of file periph_cpu.h.

Enumeration Type Documentation

anonymous enum

anonymous enum

nRF52 specific naming of ADC lines (for convenience)

Enumerator
NRF52_AIN0	Analog Input 0.
NRF52_AIN1	Analog Input 1.
NRF52_AIN2	Analog Input 2.
NRF52_AIN3	Analog Input 3.
NRF52_AIN4	Analog Input 4.
NRF52_AIN5	Analog Input 5.
NRF52_AIN6	Analog Input 6.
NRF52_AIN7	Analog Input 7.
NRF52_VDD	VDD, not useful if VDD is reference...

Definition at line 48 of file periph_cpu.h.

Function Documentation

nrf5x_i2c_acquire()

void nrf5x_i2c_acquire	(	NRF_TWIM_Type *	bus,
		spi_twi_irq_cb_t	cb,
		void *	arg
	)

Acquire the shared I2C/SPI peripheral in I2C mode.

Parameters

bus	bus to acquire exclusive access on
cb	ISR handler to call on IRQ
arg	ISR handler argument

nrf5x_i2c_release()

void nrf5x_i2c_release

(

NRF_TWIM_Type *

bus

)

Release the shared I2C/SPI peripheral in I2C mode.

Parameters

bus	bus to release exclusive access on

nrf5x_spi_acquire()

void nrf5x_spi_acquire	(	NRF_SPIM_Type *	bus,
		spi_twi_irq_cb_t	cb,
		void *	arg
	)

Acquire the shared I2C/SPI peripheral in SPI mode.

Parameters

bus	bus to release exclusive access on
cb	ISR handler to call on IRQ
arg	ISR handler argument

nrf5x_spi_release()

void nrf5x_spi_release

(

NRF_SPIM_Type *

bus

)

Acquire the shared I2C/SPI peripheral in SPI mode.

Parameters

bus	bus to release exclusive access on

spi_twi_irq_register_i2c()

void spi_twi_irq_register_i2c	(	NRF_TWIM_Type *	bus,
		spi_twi_irq_cb_t	cb,
		void *	arg
	)

Register a I2C IRQ handler for a shared I2C/SPI irq vector.

Parameters

bus	bus to register the IRQ handler on
cb	callback to call on IRQ
arg	Argument to pass to the handler

spi_twi_irq_register_spi()

void spi_twi_irq_register_spi	(	NRF_SPIM_Type *	bus,
		spi_twi_irq_cb_t	cb,
		void *	arg
	)

Register a SPI IRQ handler for a shared I2C/SPI irq vector.

Parameters

bus	bus to register the IRQ handler on
cb	callback to call on IRQ
arg	Argument to pass to the handler