periph_cpu.h File Reference

CPU specific definitions for internal peripheral handling. More...

Detailed Description

CPU specific definitions for internal peripheral handling.

CPU specific definitions for internal peripheral handling

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.h.

#include <limits.h>
#include "periph_cpu_common.h"

Include dependency graph for periph_cpu.h:

Go to the source code of this file.

Data Structures
struct	sam0_aux_cfg_mapping
	NVM User Row Mapping - Dedicated Entries Config values will be applied at power-on. More...

Macros
#define	PM_BLOCKER_INITIAL   0x00000001
	Override the default initial PM blocker. More...
#define	SPI_HWCS(x)   (UINT_MAX - 1)
	Override SPI hardware chip select macro. More...
#define	DAC_RES_BITS   (10)
	The MCU has a 10 bit DAC.
#define	DAC_NUMOF   (1)
	The MCU has one DAC Output.

Functions
static int	_sercom_id (SercomUsart *sercom)
	Return the numeric id of a SERCOM device derived from its address. More...

Power mode configuration
#define	PM_NUM_MODES   (3)

SAMD21 sleep modes for PM
#define	SAMD21_PM_STANDBY   (0U)
	Standby mode (stops main clock)
#define	SAMD21_PM_IDLE_2   (1U)
	Idle 2 (stops AHB, APB and CPU)
#define	SAMD21_PM_IDLE_1   (2U)
	Idle 1 (stops AHB and CPU)
#define	SAMD21_PM_IDLE_0   (3U)
	Idle 0 (stops CPU)

SAMD21 GCLK definitions
enum	{   SAM0_GCLK_MAIN = 0, SAM0_GCLK_1MHZ, SAM0_GCLK_32KHZ, SAM0_GCLK_1KHZ,   SAM0_GCLK_DISABLED = 0xF }

Real time counter configuration
#define	RTT_RUNSTDBY   (1) /* Keep RTT running in sleep states */
#define	RTT_MAX_VALUE   (0xffffffff)
#define	RTT_CLOCK_FREQUENCY   (32768U) /* in Hz */
#define	RTT_MIN_FREQUENCY   (RTT_CLOCK_FREQUENCY / 1024U) /* in Hz */
#define	RTT_MAX_FREQUENCY   (RTT_CLOCK_FREQUENCY) /* in Hz */

Macro Definition Documentation

PM_BLOCKER_INITIAL

#define PM_BLOCKER_INITIAL   0x00000001

Override the default initial PM blocker.

Todo:

Idle modes are enabled by default, deep sleep mode blocked

Definition at line 42 of file periph_cpu.h.

SPI_HWCS

#define SPI_HWCS

(

x

)

(UINT_MAX - 1)

Override SPI hardware chip select macro.

As of now, we do not support HW CS, so we always set it to a fixed value

Definition at line 72 of file periph_cpu.h.

Enumeration Type Documentation

anonymous enum

anonymous enum

Enumerator
SAM0_GCLK_MAIN	48 MHz main clock
SAM0_GCLK_1MHZ	1 MHz clock for xTimer
SAM0_GCLK_32KHZ	32 kHz clock
SAM0_GCLK_1KHZ	1 kHz clock
SAM0_GCLK_DISABLED	disabled GCLK

Definition at line 58 of file periph_cpu.h.

Function Documentation

_sercom_id()

static int _sercom_id ( SercomUsart *  sercom )

inlinestatic

Return the numeric id of a SERCOM device derived from its address.

Parameters

[in]

sercom

SERCOM device

Returns

numeric id of the given SERCOM device

Definition at line 81 of file periph_cpu.h.