adxl345_spi.c File Reference

Driver for the accelerometer ADXL345 from Analog Devices using SPI. More...

#include "peripherals/adxl345_spi.h"

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Macros
#define	Int16FromBuf(_buf, _idx)   ((int16_t)((_buf[_idx+1]<<8) | _buf[_idx]))

Functions
void	adxl345_spi_init (struct Adxl345_Spi *adxl, struct spi_periph *spi_p, uint8_t slave_idx)
static void	adxl345_spi_write_to_reg (struct Adxl345_Spi *adxl, uint8_t _reg, uint8_t _val)
static void	adxl345_spi_send_config (struct Adxl345_Spi *adxl)
void	adxl345_spi_start_configure (struct Adxl345_Spi *adxl)
void	adxl345_spi_read (struct Adxl345_Spi *adxl)
void	adxl345_spi_event (struct Adxl345_Spi *adxl)

Detailed Description

Driver for the accelerometer ADXL345 from Analog Devices using SPI.

Todo:

Use SPICallback to copy data from rx_buf when transaction is successful, instead of checking transaction status for SPITransSuccess in event loop. Problem is that in the callback we don't have a reference to the Adxl345_Spi struct.

Definition in file adxl345_spi.c.

Macro Definition Documentation

#define Int16FromBuf	(		_buf,
			_idx
	)		((int16_t)((_buf[_idx+1]<<8) | _buf[_idx]))

Definition at line 129 of file adxl345_spi.c.

Referenced by adxl345_spi_event().

Function Documentation

void adxl345_spi_event

(

struct Adxl345_Spi *

adxl

)

Definition at line 131 of file adxl345_spi.c.

References adxl345_spi_send_config(), ADXL_CONF_UNINIT, Adxl345_Spi::data, Adxl345_Spi::data_available, Adxl345_Spi::init_status, Adxl345_Spi::initialized, Int16FromBuf, Adxl345_Spi::rx_buf, Adxl345_Spi::spi_trans, SPITransDone, SPITransFailed, SPITransSuccess, and spi_transaction::status.

Referenced by imu_aspirin_event().

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void adxl345_spi_init	(	struct Adxl345_Spi *	adxl,
		struct spi_periph *	spi_p,
		uint8_t	slave_idx
	)

Definition at line 35 of file adxl345_spi.c.

References adxl345_set_default_config(), ADXL_CONF_UNINIT, spi_transaction::after_cb, spi_transaction::before_cb, spi_transaction::bitorder, spi_transaction::cdiv, Adxl345_Spi::config, spi_transaction::cpha, spi_transaction::cpol, Adxl345_Spi::data_available, spi_transaction::dss, Adxl345_Spi::init_status, Adxl345_Spi::initialized, spi_transaction::input_buf, spi_transaction::input_length, spi_transaction::output_buf, spi_transaction::output_length, Adxl345_Spi::rx_buf, spi_transaction::select, spi_transaction::slave_idx, Adxl345_Spi::spi_p, Adxl345_Spi::spi_trans, SPICphaEdge2, SPICpolIdleHigh, SPIDiv64, SPIDss8bit, SPIMSBFirst, SPISelectUnselect, SPITransDone, spi_transaction::status, and Adxl345_Spi::tx_buf.

Referenced by imu_aspirin_init().

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void adxl345_spi_read

(

struct Adxl345_Spi *

adxl

)

Definition at line 118 of file adxl345_spi.c.

References ADXL345_REG_DATA_X0, Adxl345_Spi::initialized, spi_transaction::input_length, spi_transaction::output_length, Adxl345_Spi::spi_p, spi_submit(), Adxl345_Spi::spi_trans, SPITransDone, spi_transaction::status, and Adxl345_Spi::tx_buf.

Referenced by adxl345_spi_periodic().

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static void adxl345_spi_send_config ( struct Adxl345_Spi *  adxl )

static

Definition at line 79 of file adxl345_spi.c.

References adxl345_data_format(), ADXL345_REG_BW_RATE, ADXL345_REG_DATA_FORMAT, ADXL345_REG_INT_ENABLE, ADXL345_REG_POWER_CTL, adxl345_spi_write_to_reg(), ADXL_CONF_DONE, ADXL_CONF_ENABLE, ADXL_CONF_FORMAT, ADXL_CONF_INT, ADXL_CONF_RATE, Adxl345_Spi::config, Adxl345Config::drdy_int_enable, Adxl345_Spi::init_status, Adxl345_Spi::initialized, Adxl345Config::rate, Adxl345_Spi::spi_trans, SPITransDone, and spi_transaction::status.

Referenced by adxl345_spi_event(), and adxl345_spi_start_configure().

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void adxl345_spi_start_configure

(

struct Adxl345_Spi *

adxl

)

Definition at line 108 of file adxl345_spi.c.

References adxl345_spi_send_config(), ADXL_CONF_UNINIT, Adxl345_Spi::init_status, Adxl345_Spi::spi_trans, SPITransDone, SPITransSuccess, and spi_transaction::status.

Referenced by adxl345_spi_periodic().

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static void adxl345_spi_write_to_reg ( struct Adxl345_Spi *  adxl, uint8_t  _reg, uint8_t  _val  )

static

Definition at line 69 of file adxl345_spi.c.

References spi_transaction::input_length, spi_transaction::output_length, Adxl345_Spi::spi_p, spi_submit(), Adxl345_Spi::spi_trans, and Adxl345_Spi::tx_buf.

Referenced by adxl345_spi_send_config().

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