ms5611.h

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/**
 * @file ms5611.h
 *
 * Shared defines for the ms5611 driver.
 */

#pragma once

#include <string.h>

#include <drivers/device/i2c.h>
#include <drivers/device/device.h>
#include <drivers/device/ringbuffer.h>
#include <drivers/device/spi.h>
#include <drivers/drv_baro.h>
#include <lib/cdev/CDev.hpp>
#include <lib/perf/perf_counter.h>
#include <px4_platform_common/getopt.h>
#include <px4_platform_common/px4_work_queue/ScheduledWorkItem.hpp>
#include <systemlib/err.h>
#include <uORB/uORB.h>

#include "board_config.h"

#define ADDR_RESET_CMD          0x1E    /* write to this address to reset chip */
#define ADDR_PROM_SETUP         0xA0    /* address of 8x 2 bytes factory and calibration data */

/* interface ioctls */
#define IOCTL_RESET         2
#define IOCTL_MEASURE           3

namespace ms5611
{

/**
 * Calibration PROM as reported by the device.
 */
#pragma pack(push,1)
struct prom_s {
    uint16_t factory_setup;
    uint16_t c1_pressure_sens;
    uint16_t c2_pressure_offset;
    uint16_t c3_temp_coeff_pres_sens;
    uint16_t c4_temp_coeff_pres_offset;
    uint16_t c5_reference_temp;
    uint16_t c6_temp_coeff_temp;
    uint16_t serial_and_crc;
};

/**
 * Grody hack for crc4()
 */
union prom_u {
    uint16_t c[8];
    prom_s s;
};
#pragma pack(pop)

extern bool crc4(uint16_t *n_prom);

} /* namespace */

/* interface factories */
extern device::Device *MS5611_spi_interface(ms5611::prom_u &prom_buf, uint8_t busnum);
extern device::Device *MS5611_i2c_interface(ms5611::prom_u &prom_buf, uint8_t busnum);
extern device::Device *MS5611_sim_interface(ms5611::prom_u &prom_buf, uint8_t busnum);
typedef device::Device *(*MS5611_constructor)(ms5611::prom_u &prom_buf, uint8_t busnum);