dev_ism330dhcx.c File Reference

#include "dev_ism330dhcx.h"
#include <stddef.h>

Include dependency graph for dev_ism330dhcx.c:

Go to the source code of this file.

Macros
#define	SPI_READ   0x80U /* bit 7 = 1: read (p.21) */
#define	CTRL3_SW_RESET   0x01U /* self-clearing (p.51) */
#define	RESET_POLLS   10U /* 1 ms apart; reset takes far less */

Enumerations
enum	{   REG_COUNTER_BDR_REG1 = 0x0B , REG_INT1_CTRL = 0x0D , REG_WHO_AM_I = 0x0F , REG_CTRL1_XL = 0x10 ,   REG_CTRL2_G = 0x11 , REG_CTRL3_C = 0x12 , REG_CTRL4_C = 0x13 , REG_OUT_TEMP_L = 0x20 }

Functions
static int	write_reg (const dev_bus_t *bus, uint8_t reg, uint8_t value)
static int	read_reg (const dev_bus_t *bus, uint8_t reg, uint8_t *value)
int	ism330_init (const dev_bus_t *bus)
int	ism330_power_down (const dev_bus_t *bus)
static int16_t	le16 (const uint8_t *p)
int	ism330_read (const dev_bus_t *bus, ism330_sample_t *out)

Variables
struct {
uint8_t   reg
uint8_t   value
}	config []

Macro Definition Documentation

CTRL3_SW_RESET

#define CTRL3_SW_RESET   0x01U /* self-clearing (p.51) */

Definition at line 17 of file dev_ism330dhcx.c.

Referenced by ism330_init().

RESET_POLLS

#define RESET_POLLS   10U /* 1 ms apart; reset takes far less */

Definition at line 18 of file dev_ism330dhcx.c.

Referenced by ism330_init().

SPI_READ

#define SPI_READ   0x80U /* bit 7 = 1: read (p.21) */

Definition at line 16 of file dev_ism330dhcx.c.

Enumeration Type Documentation

anonymous enum

anonymous enum

Enumerator
REG_COUNTER_BDR_REG1
REG_INT1_CTRL
REG_WHO_AM_I
REG_CTRL1_XL
REG_CTRL2_G
REG_CTRL3_C
REG_CTRL4_C
REG_OUT_TEMP_L

Definition at line 5 of file dev_ism330dhcx.c.

Function Documentation

ism330_init()

int ism330_init

(

const dev_bus_t *

bus

)

Definition at line 45 of file dev_ism330dhcx.c.

References config, CTRL3_SW_RESET, DEV_ERR_BUS, DEV_ERR_ID, DEV_ERR_PARAM, DEV_ERR_TIMEOUT, DEV_ERR_VERIFY, DEV_OK, ISM330_WHO_AM_I_VALUE, read_reg(), reg, REG_CTRL3_C, REG_WHO_AM_I, RESET_POLLS, and write_reg().

Referenced by init_imu(), test_bus_error_is_reported(), test_dead_bus_reads_ff_and_is_refused(), test_init_writes_the_datasheet_configuration(), test_missing_arguments_are_refused(), test_register_that_does_not_read_back_fails(), test_reset_that_never_finishes_times_out(), and test_wrong_identity_is_refused_before_any_write().

ism330_power_down()

int ism330_power_down

(

const dev_bus_t *

bus

)

Definition at line 81 of file dev_ism330dhcx.c.

References DEV_ERR_BUS, DEV_ERR_PARAM, DEV_OK, REG_CTRL1_XL, REG_CTRL2_G, and write_reg().

Referenced by sensors_core_stop().

ism330_read()

int ism330_read	(	const dev_bus_t *	bus,
		ism330_sample_t *	out )

Definition at line 96 of file dev_ism330dhcx.c.

References DEV_ERR_BUS, DEV_ERR_PARAM, DEV_OK, le16(), REG_OUT_TEMP_L, and SPI_READ.

Referenced by read_imu(), test_missing_arguments_are_refused(), and test_read_decodes_the_burst().

le16()

int16_t le16 ( const uint8_t * p )

static

Definition at line 92 of file dev_ism330dhcx.c.

References p.

Referenced by ism330_read().

read_reg()

int read_reg ( const dev_bus_t * bus, uint8_t reg, uint8_t * value )

static

Definition at line 37 of file dev_ism330dhcx.c.

References reg, and SPI_READ.

Referenced by ism330_init().

write_reg()

int write_reg ( const dev_bus_t * bus, uint8_t reg, uint8_t value )

static

Definition at line 32 of file dev_ism330dhcx.c.

References NULL, and reg.

Referenced by ism330_init(), and ism330_power_down().

Variable Documentation

[struct]

const struct { ... } config[]

Initial value:

= {
    {REG_CTRL3_C, 0x44},          
    {REG_CTRL4_C, 0x04},          
    {REG_CTRL1_XL, 0x74},         
    {REG_CTRL2_G, 0x71},          
    {REG_COUNTER_BDR_REG1, 0x80}, 
    {REG_INT1_CTRL, 0x01},        
}

reg

uint8_t reg

Definition at line 21 of file dev_ism330dhcx.c.

value

uint8_t value

Definition at line 22 of file dev_ism330dhcx.c.