lis2dh12.h

Interface definition for the STM LIS2DH12 accelerometer.

enum lis2dh12_scale_t
LIS2DH12_SCALE_2G = 0x00
+- 2g
LIS2DH12_SCALE_4G = 0x10
+- 4g
LIS2DH12_SCALE_8G = 0x20
+- 8g
LIS2DH12_SCALE_16G = 0x30
+- 16g
enum lis2dh12_rate_t
LIS2DH12_RATE_1HZ = 0x17
sample with 1Hz
LIS2DH12_RATE_10HZ = 0x27
sample with 10Hz
LIS2DH12_RATE_25HZ = 0x37
sample with 25Hz
LIS2DH12_RATE_50HZ = 0x47
sample with 50Hz
LIS2DH12_RATE_100HZ = 0x57
sample with 100Hz
LIS2DH12_RATE_200HZ = 0x67
sample with 200Hz
LIS2DH12_RATE_400HZ = 0x77
sample with 400Hz
enum @126
LIS2DH12_OK =  0
everything was fine
LIS2DH12_NOBUS = -1
bus interface error
LIS2DH12_NODEV = -2
unable to talk to device
const saul_driver_t lis2dh12_saul_driver

Export the SAUL interface for this driver.

int lis2dh12_init(lis2dh12_t * dev, const lis2dh12_params_t * params)

Initialize the given LIS2DH12 sensor device.

Parameters

dev:device descriptor
params:static device configuration

Return values

  • LIS2DH12_OK on success
  • LIS2DH12_NOBUS on bus errors
  • LIS2DH12_NODEV if no LIS2DH12 device was found on the bus
int lis2dh12_read(const lis2dh12_t * dev, int16_t * data)

Read acceleration data from the given device.

Parameters

dev:device descriptor
data:acceleration data in mili-g, MUST hold 3 values

Return values

  • LIS2DH12_OK on success
  • LIS2DH12_NOBUS on bus error
int lis2dh12_poweron(const lis2dh12_t * dev)

Power on the given device.

Parameters

dev:device descriptor

Return values

  • LIS2DH12_OK on success
  • LIS2DH12_NOBUS on bus error
int lis2dh12_poweroff(const lis2dh12_t * dev)

Power off the given device.

Parameters

dev:device descriptor

Return values

  • LIS2DH12_OK on success
  • LIS2DH12_NOBUS on bus error
struct lis2dh12_params_t

LIS2DH12 configuration parameters.

spi.h::spi_t spi

SPI bus the device is connected to.

gpio.h::gpio_t cs

connected chip select pin

lis2dh12.h::lis2dh12_scale_t scale

sampling sensitivity used

lis2dh12.h::lis2dh12_rate_t rate

sampling rate used

struct lis2dh12_t

LIS2DH12 device descriptor.

const lis2dh12_params_t * p

device configuration

uint16_t comp

scale compensation factor