pmw3901.h File Reference

#include "mcu_periph/spi.h"
#include "modules/core/threads.h"
#include <stdbool.h>
#include <math.h>

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Data Structures
struct	pmw3901_t

Macros
#define	SPI_BUFFER_SIZE   8

Enumerations
enum	pmw3901_state {   PMW3901_IDLE , PMW3901_READ_MOTION , PMW3901_READ_DELTAXHIGH , PMW3901_READ_DELTAXLOW ,   PMW3901_READ_DELTAYHIGH , PMW3901_READ_DELTAYLOW }

Functions
void	pmw3901_init (struct pmw3901_t *pmw, struct spi_periph *periph, uint8_t slave_idx)
bool	pmw3901_get_data (struct pmw3901_t *pmw, int16_t *delta_x, int16_t *delta_y)

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Data Structure Documentation

pmw3901_t

struct pmw3901_t

Definition at line 61 of file pmw3901.h.

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Data Fields
pprz_bsem_t	bsem
bool	data_available
int16_t	delta_x
int16_t	delta_y
struct spi_periph *	periph
float	rad_per_px
uint8_t	readwrite_state
uint32_t	readwrite_timeout
volatile uint8_t	spi_input_buf[SPI_BUFFER_SIZE]
volatile uint8_t	spi_output_buf[SPI_BUFFER_SIZE]
enum pmw3901_state	state
pprz_thread_t	thd_handle
struct spi_transaction	trans

Macro Definition Documentation

SPI_BUFFER_SIZE

#define SPI_BUFFER_SIZE   8

Definition at line 49 of file pmw3901.h.

Enumeration Type Documentation

pmw3901_state

enum pmw3901_state

Enumerator
PMW3901_IDLE
PMW3901_READ_MOTION
PMW3901_READ_DELTAXHIGH
PMW3901_READ_DELTAXLOW
PMW3901_READ_DELTAYHIGH
PMW3901_READ_DELTAYLOW

Definition at line 52 of file pmw3901.h.

Function Documentation

pmw3901_get_data()

bool pmw3901_get_data	(	struct pmw3901_t *	pmw,
		int16_t *	delta_x,
		int16_t *	delta_y
	)

Definition at line 260 of file pmw3901.c.

References pmw3901_t::data_available, pmw3901_t::delta_x, and pmw3901_t::delta_y.

Referenced by opticflow_pmw3901_event().

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pmw3901_init()

void pmw3901_init	(	struct pmw3901_t *	pmw,
		struct spi_periph *	periph,
		uint8_t	slave_idx
	)

Definition at line 232 of file pmw3901.c.

References spi_transaction::after_cb, spi_transaction::before_cb, spi_transaction::bitorder, pmw3901_t::bsem, spi_transaction::cdiv, spi_transaction::cpha, spi_transaction::cpol, pmw3901_t::data_available, pmw3901_t::delta_x, pmw3901_t::delta_y, spi_transaction::dss, foo, initializeSensor(), spi_transaction::input_buf, spi_transaction::output_buf, pmw3901_t::periph, PMW3901_IDLE, PMW3901_RAD_PER_PX, PMW3901_SPI_CDIV, pmw3901_thd(), pprz_bsem_init(), PPRZ_NORMAL_PRIO, pprz_thread_create(), pmw3901_t::rad_per_px, spi_transaction::select, spi_transaction::slave_idx, pmw3901_t::spi_input_buf, pmw3901_t::spi_output_buf, SPICphaEdge2, SPICpolIdleHigh, SPIDss8bit, SPIMSBFirst, SPINoSelect, SPITransDone, pmw3901_t::state, spi_transaction::status, pmw3901_t::thd_handle, and pmw3901_t::trans.

Referenced by opticflow_pmw3901_init().

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