ardupilot/libraries/AP_InertialSensor/AP_InertialSensor_LSM9DS0.h

92 lines
2.4 KiB
C
Raw Normal View History

#pragma once
#define LSM9DS0_DEBUG 0
#include <AP_HAL/AP_HAL.h>
#include <AP_HAL/SPIDevice.h>
#include "AP_InertialSensor.h"
#include "AP_InertialSensor_Backend.h"
class AP_InertialSensor_LSM9DS0 : public AP_InertialSensor_Backend
{
public:
virtual ~AP_InertialSensor_LSM9DS0() { }
bool update();
static AP_InertialSensor_Backend *probe(AP_InertialSensor &imu,
AP_HAL::OwnPtr<AP_HAL::SPIDevice> dev_gyro,
AP_HAL::OwnPtr<AP_HAL::SPIDevice> dev_accel);
private:
AP_InertialSensor_LSM9DS0(AP_InertialSensor &imu,
AP_HAL::OwnPtr<AP_HAL::SPIDevice> dev_gyro,
AP_HAL::OwnPtr<AP_HAL::SPIDevice> dev_accel,
int drdy_pin_num_a, int drdy_pin_num_b);
struct PACKED sensor_raw_data {
int16_t x;
int16_t y;
int16_t z;
};
enum gyro_scale {
G_SCALE_245DPS = 0,
G_SCALE_500DPS,
G_SCALE_2000DPS,
};
enum accel_scale {
A_SCALE_2G = 0,
A_SCALE_4G,
A_SCALE_6G,
A_SCALE_8G,
A_SCALE_16G,
};
bool _accel_data_ready();
bool _gyro_data_ready();
void _poll_data();
bool _init_sensor();
bool _hardware_init();
void _gyro_init();
void _accel_init();
void _set_gyro_scale(gyro_scale scale);
void _set_accel_scale(accel_scale scale);
uint8_t _register_read_xm(uint8_t reg);
uint8_t _register_read_g(uint8_t reg);
void _register_write_xm(uint8_t reg, uint8_t val);
void _register_write_g(uint8_t reg, uint8_t val);
void _read_data_transaction_a();
void _read_data_transaction_g();
#if LSM9DS0_DEBUG
void _dump_registers();
#endif
AP_HAL::OwnPtr<AP_HAL::SPIDevice> _dev_gyro;
AP_HAL::OwnPtr<AP_HAL::SPIDevice> _dev_accel;
AP_HAL::Semaphore *_spi_sem;
/*
* If data-ready GPIO pins numbers are not defined (i.e. any negative
* value), the fallback approach used is to check if there's new data ready
* by reading the status register. It is *strongly* recommended to use
* data-ready GPIO pins for performance reasons.
*/
AP_HAL::DigitalSource * _drdy_pin_a;
AP_HAL::DigitalSource * _drdy_pin_g;
float _gyro_scale;
float _accel_scale;
int _drdy_pin_num_a;
int _drdy_pin_num_g;
uint8_t _gyro_instance;
uint8_t _accel_instance;
};