Handling of the MS5534a pressure sensor. More...

#include "modules/sensors/baro_MS5534A.h"
#include "mcu_periph/spi.h"
#include "mcu_periph/uart.h"
#include "modules/datalink/downlink.h"
#include "modules/core/abi.h"
#include "firmwares/fixedwing/nav.h"
#include "state.h"

Include dependency graph for baro_MS5534A.c:

Go to the source code of this file.

Macros
#define	STATUS_INIT1 0

#define	STATUS_INIT2 1

#define	STATUS_INIT3 2

#define	STATUS_INIT4 3

#define	STATUS_MEASURE_PRESSURE 4

#define	STATUS_MEASURE_TEMPERATURE 5

#define	STATUS_RESET 6

#define	InitStatus() (status <= STATUS_INIT4)

#define	NextStatus()

#define	CMD_INIT 0x1D

#define	CMD_MEASUREMENT 0x0F

#define	CMD_W1 0x50

#define	CMD_W2 0x60

#define	CMD_W3 0x90

#define	CMD_W4 0xA0

#define	CMD_PRESSURE 0x40

#define	CMD_TEMPERATURE 0x20

#define	Uint16(buf_input) (buf_input[0] << 8 \| buf_input[1])

#define	MS5534A_MCLK 32768

#define	PWM_PERIOD ((PCLK / PWM_PRESCALER) / MS5534A_MCLK)

#define	PWM_DUTY (PWM_PERIOD / 2)

Functions
static void	calibration (void)

void	baro_MS5534A_init (void)

void	baro_MS5534A_reset (void)

void	baro_MS5534A_send (void)

void	baro_MS5534A_event_task (void)

void	baro_MS5534A_event (void)

Variables
bool	baro_MS5534A_do_reset

uint32_t	baro_MS5534A_pressure

uint16_t	baro_MS5534A_temp

bool	baro_MS5534A_available

bool	alt_baro_enabled

uint32_t	baro_MS5534A_ground_pressure

float	baro_MS5534A_r

float	baro_MS5534A_sigma2

float	baro_MS5534A_z

static uint8_t	status

static bool	status_read_data

static uint16_t	words [4]

static uint8_t	cmds [6] = {CMD_W1, CMD_W2, CMD_W3, CMD_W4, CMD_PRESSURE, CMD_TEMPERATURE}

static uint8_t	reset [3] = {0x15, 0x55, 0x40}

static uint8_t	buf_input [3]

static uint8_t	buf_output [3]

static uint16_t	d1

static uint16_t	d2

static uint16_t	c1

static uint16_t	c2

static uint16_t	c3

static uint16_t	c4

static uint16_t	ut1

static uint16_t	c6

Detailed Description

Handling of the MS5534a pressure sensor.

uses: MOSI, MISO, SCK and 32kHz @ P0.7 with 5V for the -A type

Definition in file baro_MS5534A.c.

Macro Definition Documentation

◆ CMD_INIT

#define CMD_INIT 0x1D

Definition at line 73 of file baro_MS5534A.c.

◆ CMD_MEASUREMENT

#define CMD_MEASUREMENT 0x0F

Definition at line 74 of file baro_MS5534A.c.

◆ CMD_PRESSURE

#define CMD_PRESSURE 0x40

Definition at line 80 of file baro_MS5534A.c.

◆ CMD_TEMPERATURE

#define CMD_TEMPERATURE 0x20

Definition at line 81 of file baro_MS5534A.c.

◆ CMD_W1

#define CMD_W1 0x50

Definition at line 76 of file baro_MS5534A.c.

◆ CMD_W2

#define CMD_W2 0x60

Definition at line 77 of file baro_MS5534A.c.

◆ CMD_W3

#define CMD_W3 0x90

Definition at line 78 of file baro_MS5534A.c.

◆ CMD_W4

#define CMD_W4 0xA0

Definition at line 79 of file baro_MS5534A.c.

◆ InitStatus

#define InitStatus ( ) (status <= STATUS_INIT4)

Definition at line 64 of file baro_MS5534A.c.

◆ MS5534A_MCLK

#define MS5534A_MCLK 32768

Definition at line 111 of file baro_MS5534A.c.

◆ NextStatus

#define NextStatus ( )

Value:

    { \
    if (status_read_data) { \
      status++; if (status > STATUS_MEASURE_TEMPERATURE) status = STATUS_MEASURE_PRESSURE; \
    }; \
    status_read_data = !status_read_data; \
  }