mirror of https://github.com/ArduPilot/ardupilot
536 lines
21 KiB
C++
536 lines
21 KiB
C++
/*
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* This program is free software
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*/
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#include <AP_HAL/AP_HAL.h>
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#include "AP_InertialSensor_LSM9DS1.h"
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#include <utility>
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#include <AP_HAL/GPIO.h>
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extern const AP_HAL::HAL& hal;
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#define WHO_AM_I 0x68
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#define WHO_AM_I_M 0x3D
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#define LSM9DS1_DRY_XG_PIN -1
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/*
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* Accelerometer and Gyroscope registers
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*/
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#define LSM9DS1XG_ACT_THS 0x04
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# define LSM9DS1XG_ACT_THS_SLEEP_ON (0x1 << 7)
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#define LSM9DS1XG_ACT_DUR 0x05
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#define LSM9DS1XG_INT_GEN_CFG_XL 0x06
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# define LSM9DS1XG_INT_GEN_CFG_XL_AOI_XL (0x1 << 7)
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# define LSM9DS1XG_INT_GEN_CFG_XL_6D (0x1 << 6)
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# define LSM9DS1XG_INT_GEN_CFG_XL_ZHIE_XL (0x1 << 5)
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# define LSM9DS1XG_INT_GEN_CFG_XL_ZLIE_XL (0x1 << 4)
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# define LSM9DS1XG_INT_GEN_CFG_XL_YHIE_XL (0x1 << 3)
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# define LSM9DS1XG_INT_GEN_CFG_XL_YLIE_XL (0x1 << 2)
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# define LSM9DS1XG_INT_GEN_CFG_XL_XHIE_XL (0x1 << 1)
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# define LSM9DS1XG_INT_GEN_CFG_XL_XLIE_XL (0x1 << 0)
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#define LSM9DS1XG_INT_GEN_THS_X_XL 0x07
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#define LSM9DS1XG_INT_GEN_THS_Y_XL 0x08
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#define LSM9DS1XG_INT_GEN_THS_Z_XL 0x09
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#define LSM9DS1XG_INT_GEN_DUR_XL 0x0A
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# define LSM9DS1XG_INT_GEN_DUR_XL_WAIT_XL (0x1 << 7)
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#define LSM9DS1XG_REFERENCE_G 0x0B
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#define LSM9DS1XG_INT1_CTRL 0x0C
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# define LSM9DS1XG_INT1_CTRL_INT1_IG_G (0x1 << 7)
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# define LSM9DS1XG_INT1_CTRL_INT_IG_XL (0x1 << 6)
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# define LSM9DS1XG_INT1_CTRL_INT_FSS5 (0x1 << 5)
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# define LSM9DS1XG_INT1_CTRL_INT_OVR (0x1 << 4)
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# define LSM9DS1XG_INT1_CTRL_INT_FTH (0x1 << 3)
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# define LSM9DS1XG_INT1_CTRL_INT_Boot (0x1 << 2)
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# define LSM9DS1XG_INT1_CTRL_INT_DRDY_G (0x1 << 1)
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# define LSM9DS1XG_INT1_CTRL_INT_DRDY_XL (0x1 << 0)
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#define LSM9DS1XG_INT2_CTRL 0x0D
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# define LSM9DS1XG_INT2_CTRL_INT2_INACT (0x1 << 7)
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# define LSM9DS1XG_INT2_CTRL_INT2_FSS5 (0x1 << 5)
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# define LSM9DS1XG_INT2_CTRL_INT2_OVR (0x1 << 4)
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# define LSM9DS1XG_INT2_CTRL_INT2_FTH (0x1 << 3)
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# define LSM9DS1XG_INT2_CTRL_INT2_DRDY_TEMP (0x1 << 2)
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# define LSM9DS1XG_INT2_CTRL_INT2_DRDY_G (0x1 << 1)
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# define LSM9DS1XG_INT2_CTRL_INT2_DRDY_XL (0x1 << 0)
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#define LSM9DS1XG_WHO_AM_I 0x0F
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#define LSM9DS1XG_CTRL_REG1_G 0x10
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# define LSM9DS1XG_CTRL_REG1_G_ODR_G_14900mHz (0x1 << 5)
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# define LSM9DS1XG_CTRL_REG1_G_ODR_G_59500mHz (0x2 << 5)
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# define LSM9DS1XG_CTRL_REG1_G_ODR_G_119Hz (0x3 << 5)
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# define LSM9DS1XG_CTRL_REG1_G_ODR_G_238Hz (0x4 << 5)
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# define LSM9DS1XG_CTRL_REG1_G_ODR_G_476Hz (0x5 << 5)
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# define LSM9DS1XG_CTRL_REG1_G_ODR_G_952Hz (0x6 << 5)
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# define LSM9DS1XG_CTRL_REG1_FS_G_245DPS (0x0 << 3)
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# define LSM9DS1XG_CTRL_REG1_FS_G_500DPS (0x1 << 3)
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# define LSM9DS1XG_CTRL_REG1_FS_G_2000DPS (0x3 << 3)
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#define LSM9DS1XG_CTRL_REG2_G 0x11
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# define LSM9DS1XG_CTRL_REG2_G_INT_SEL_00 (0x0 << 2)
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# define LSM9DS1XG_CTRL_REG2_G_INT_SEL_01 (0x1 << 2)
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# define LSM9DS1XG_CTRL_REG2_G_INT_SEL_10 (0x2 << 2)
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# define LSM9DS1XG_CTRL_REG2_G_INT_SEL_11 (0x3 << 2)
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# define LSM9DS1XG_CTRL_REG2_G_OUT_SEL_00 (0x0 << 0)
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# define LSM9DS1XG_CTRL_REG2_G_OUT_SEL_01 (0x1 << 0)
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# define LSM9DS1XG_CTRL_REG2_G_OUT_SEL_10 (0x2 << 0)
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# define LSM9DS1XG_CTRL_REG2_G_OUT_SEL_11 (0x3 << 0)
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#define LSM9DS1XG_CTRL_REG3_G 0x12
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# define LSM9DS1XG_CTRL_REG3_G_LP_MODE (0x1 << 7)
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# define LSM9DS1XG_CTRL_REG3_G_HP_EN (0x1 << 6)
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#define LSM9DS1XG_ORIENT_CFG_G 0x13
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#define LSM9DS1XG_INT_GEN_SRC_G 0x14
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# define LSM9DS1XG_INT_GEN_SRC_G_IA_G (0x1 << 6)
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# define LSM9DS1XG_INT_GEN_SRC_G_ZH_G (0x1 << 5)
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# define LSM9DS1XG_INT_GEN_SRC_G_ZL_G (0x1 << 4)
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# define LSM9DS1XG_INT_GEN_SRC_G_YH_G (0x1 << 3)
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# define LSM9DS1XG_INT_GEN_SRC_G_YL_G (0x1 << 2)
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# define LSM9DS1XG_INT_GEN_SRC_G_XH_G (0x1 << 1)
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# define LSM9DS1XG_INT_GEN_SRC_G_XL_G (0x1 << 0)
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#define LSM9DS1XG_OUT_TEMP_L 0x15
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#define LSM9DS1XG_OUT_TEMP_H 0x16
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#define LSM9DS1XG_STATUS_REG 0x17
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# define LSM9DS1XG_STATUS_REG_IG_XL (0x1 << 6)
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# define LSM9DS1XG_STATUS_REG_IG_G (0x1 << 5)
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# define LSM9DS1XG_STATUS_REG_INACT (0x1 << 4)
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# define LSM9DS1XG_STATUS_REG_BOOT_STATUS (0x1 << 3)
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# define LSM9DS1XG_STATUS_REG_TDA (0x1 << 2)
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# define LSM9DS1XG_STATUS_REG_GDA (0x1 << 1)
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# define LSM9DS1XG_STATUS_REG_XLDA (0x1 << 0)
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#define LSM9DS1XG_OUT_X_L_G 0x18
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#define LSM9DS1XG_OUT_X_H_G 0x19
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#define LSM9DS1XG_OUT_Y_L_G 0x1A
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#define LSM9DS1XG_OUT_Y_H_G 0x1B
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#define LSM9DS1XG_OUT_Z_L_G 0x1C
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#define LSM9DS1XG_OUT_Z_H_G 0x1D
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#define LSM9DS1XG_CTRL_REG4 0x1E
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# define LSM9DS1XG_CTRL_REG4_Zen_G (0x1 << 5)
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# define LSM9DS1XG_CTRL_REG4_Yen_G (0x1 << 4)
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# define LSM9DS1XG_CTRL_REG4_Xen_G (0x1 << 3)
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# define LSM9DS1XG_CTRL_REG4_LIR_XL1 (0x1 << 1)
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# define LSM9DS1XG_CTRL_REG4_4D_XL1 (0x1 << 0)
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#define LSM9DS1XG_CTRL_REG5_XL 0x1F
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# define LSM9DS1XG_CTRL_REG5_XL_Zen_XL (0x1 << 5)
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# define LSM9DS1XG_CTRL_REG5_XL_Yen_XL (0x1 << 4)
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# define LSM9DS1XG_CTRL_REG5_XL_Xen_XL (0x1 << 3)
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#define LSM9DS1XG_CTRL_REG6_XL 0x20
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# define LSM9DS1XG_CTRL_REG6_XL_ODR_XL_10Hz (0x1 << 5)
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# define LSM9DS1XG_CTRL_REG6_XL_ODR_XL_50Hz (0x2 << 5)
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# define LSM9DS1XG_CTRL_REG6_XL_ODR_XL_119Hz (0x3 << 5)
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# define LSM9DS1XG_CTRL_REG6_XL_ODR_XL_238Hz (0x4 << 5)
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# define LSM9DS1XG_CTRL_REG6_XL_ODR_XL_476Hz (0x5 << 5)
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# define LSM9DS1XG_CTRL_REG6_XL_ODR_XL_952Hz (0x6 << 5)
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# define LSM9DS1XG_CTRL_REG6_XL_FS_XL_2G (0x0 << 3)
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# define LSM9DS1XG_CTRL_REG6_XL_FS_XL_16G (0x1 << 3)
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# define LSM9DS1XG_CTRL_REG6_XL_FS_XL_4G (0x2 << 3)
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# define LSM9DS1XG_CTRL_REG6_XL_FS_XL_8G (0x3 << 3)
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# define LSM9DS1XG_CTRL_REG6_XL_BW_SCAL_ODR (0x1 << 2)
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# define LSM9DS1XG_CTRL_REG6_XL_BW_XL_408Hz (0x0 << 0)
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# define LSM9DS1XG_CTRL_REG6_XL_BW_XL_211Hz (0x1 << 0)
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# define LSM9DS1XG_CTRL_REG6_XL_BW_XL_105Hz (0x2 << 0)
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# define LSM9DS1XG_CTRL_REG6_XL_BW_XL_50Hz (0x3 << 0)
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#define LSM9DS1XG_CTRL_REG7_XL 0x21
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# define LSM9DS1XG_CTRL_REG7_XL_FDS (0x1 << 2)
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# define LSM9DS1XG_CTRL_REG7_XL_HPIS1 (0x1 << 0)
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#define LSM9DS1XG_CTRL_REG8 0x22
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# define LSM9DS1XG_CTRL_REG8_BOOT (0x1 << 7)
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# define LSM9DS1XG_CTRL_REG8_BDU (0x1 << 6)
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# define LSM9DS1XG_CTRL_REG8_H_LACTIVE (0x1 << 5)
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# define LSM9DS1XG_CTRL_REG8_PP_OD (0x1 << 4)
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# define LSM9DS1XG_CTRL_REG8_SIM (0x1 << 3)
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# define LSM9DS1XG_CTRL_REG8_IF_ADD_INC (0x1 << 2)
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# define LSM9DS1XG_CTRL_REG8_BLE (0x1 << 1)
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# define LSM9DS1XG_CTRL_REG8_SW_RESET (0x1 << 0)
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#define LSM9DS1XG_CTRL_REG9 0x23
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# define LSM9DS1XG_CTRL_REG9_SLEEP_G (0x1 << 6)
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# define LSM9DS1XG_CTRL_REG9_FIFO_TEMP_EN (0x1 << 4)
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# define LSM9DS1XG_CTRL_REG9_DRDY_mask_bit (0x1 << 3)
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# define LSM9DS1XG_CTRL_REG9_I2C_DISABLE (0x1 << 2)
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# define LSM9DS1XG_CTRL_REG9_FIFO_EN (0x1 << 1)
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# define LSM9DS1XG_CTRL_REG9_STOP_ON_FTH (0x1 << 0)
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#define LSM9DS1XG_CTRL_REG10 0x24
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# define LSM9DS1XG_CTRL_REG10_ST_G (0x1 << 2)
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# define LSM9DS1XG_CTRL_REG10_ST_XL (0x1 << 0)
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#define LSM9DS1XG_INT_GEN_SRC_XL 0x26
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# define LSM9DS1XG_INT_GEN_SRC_XL_IA_XL (0x1 << 6)
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# define LSM9DS1XG_INT_GEN_SRC_XL_ZH_XL (0x1 << 5)
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# define LSM9DS1XG_INT_GEN_SRC_XL_ZL_XL (0x1 << 4)
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# define LSM9DS1XG_INT_GEN_SRC_XL_YH_XL (0x1 << 3)
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# define LSM9DS1XG_INT_GEN_SRC_XL_YL_XL (0x1 << 2)
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# define LSM9DS1XG_INT_GEN_SRC_XL_XH_XL (0x1 << 1)
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# define LSM9DS1XG_INT_GEN_SRC_XL_XL_XL (0x1 << 0)
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//#define LSM9DS1XG_STATUS_REG 0x27 //repeat
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#define LSM9DS1XG_OUT_X_L_XL 0x28
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#define LSM9DS1XG_OUT_X_H_XL 0x29
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#define LSM9DS1XG_OUT_Y_L_XL 0x2A
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#define LSM9DS1XG_OUT_Y_H_XL 0x2B
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#define LSM9DS1XG_OUT_Z_L_XL 0x2C
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#define LSM9DS1XG_OUT_Z_H_XL 0x2D
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#define LSM9DS1XG_FIFO_CTRL 0x2E
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# define LSM9DS1XG_FIFO_CTRL_FMODE_BYPASS (0x0 << 5)
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# define LSM9DS1XG_FIFO_CTRL_FMODE_FIFO (0x1 << 5)
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# define LSM9DS1XG_FIFO_CTRL_FMODE_STREAM (0x3 << 5)
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# define LSM9DS1XG_FIFO_CTRL_FMODE_B_TO_S (0x4 << 5)
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# define LSM9DS1XG_FIFO_CTRL_FMODE_CON (0x5 << 5)
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#define LSM9DS1XG_FIFO_SRC 0x2F
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# define LSM9DS1XG_FIFO_SRC_FTH (0x1 << 7)
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# define LSM9DS1XG_FIFO_SRC_OVRN (0x1 << 6)
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# define LSM9DS1XG_FIFO_SRC_UNREAD_SAMPLES 0x3F
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#define LSM9DS1XG_INT_GEN_CFG_G 0x30
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# define LSM9DS1XG_INT_GEN_CFG_G_AOI_G (0x1 << 7)
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# define LSM9DS1XG_INT_GEN_CFG_G_LIR_G (0x1 << 6)
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# define LSM9DS1XG_INT_GEN_CFG_G_ZHIE_G (0x1 << 5)
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# define LSM9DS1XG_INT_GEN_CFG_G_ZLIE_G (0x1 << 4)
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# define LSM9DS1XG_INT_GEN_CFG_G_YHIE_G (0x1 << 3)
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# define LSM9DS1XG_INT_GEN_CFG_G_YLIE_G (0x1 << 2)
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# define LSM9DS1XG_INT_GEN_CFG_G_XHIE_G (0x1 << 1)
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# define LSM9DS1XG_INT_GEN_CFG_G_XLIE_G (0x1 << 0)
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#define LSM9DS1XG_INT_GEN_THS_XH_G 0x31
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# define LSM9DS1XG_INT_GEN_THS_XH_G_DCRM_G (0x1 << 7)
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#define LSM9DS1XG_INT_GEN_THS_XL_G 0x32
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#define LSM9DS1XG_INT_GEN_THS_YH_G 0x33
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#define LSM9DS1XG_INT_GEN_THS_YL_G 0x34
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#define LSM9DS1XG_INT_GEN_THS_ZH_G 0x35
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#define LSM9DS1XG_INT_GEN_THS_ZL_G 0x36
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#define LSM9DS1XG_INT_GEN_DUR_G 0x37
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# define LSM9DS1XG_INT_GEN_DUR_G_WAIT_G (0x1 << 7)
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AP_InertialSensor_LSM9DS1::AP_InertialSensor_LSM9DS1(AP_InertialSensor &imu,
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AP_HAL::OwnPtr<AP_HAL::SPIDevice> dev,
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int drdy_pin_num_xg,
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enum Rotation rotation)
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: AP_InertialSensor_Backend(imu)
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, _dev(std::move(dev))
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, _drdy_pin_num_xg(drdy_pin_num_xg)
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, _rotation(rotation)
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{
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}
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AP_InertialSensor_Backend *AP_InertialSensor_LSM9DS1::probe(AP_InertialSensor &_imu,
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AP_HAL::OwnPtr<AP_HAL::SPIDevice> dev,
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enum Rotation rotation)
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{
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if (!dev) {
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return nullptr;
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}
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AP_InertialSensor_LSM9DS1 *sensor =
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new AP_InertialSensor_LSM9DS1(_imu,std::move(dev),
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LSM9DS1_DRY_XG_PIN,
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rotation);
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if (!sensor || !sensor->_init_sensor()) {
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delete sensor;
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return nullptr;
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}
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return sensor;
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}
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bool AP_InertialSensor_LSM9DS1::_init_sensor()
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{
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_spi_sem = _dev->get_semaphore();
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if (_drdy_pin_num_xg >= 0) {
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_drdy_pin_xg = hal.gpio->channel(_drdy_pin_num_xg);
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if (_drdy_pin_xg == nullptr) {
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AP_HAL::panic("LSM9DS1: null accel data-ready GPIO channel\n");
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}
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_drdy_pin_xg->mode(HAL_GPIO_INPUT);
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}
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bool success = _hardware_init();
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#if LSM9DS1_DEBUG
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_dump_registers();
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#endif
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return success;
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}
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bool AP_InertialSensor_LSM9DS1::_hardware_init()
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{
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_spi_sem->take_blocking();
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uint8_t tries, whoami;
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// set flag for reading registers
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_dev->set_read_flag(0x80);
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whoami = _register_read(LSM9DS1XG_WHO_AM_I);
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if (whoami != WHO_AM_I) {
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hal.console->printf("LSM9DS1: unexpected acc/gyro WHOAMI 0x%x\n", whoami);
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goto fail_whoami;
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}
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_fifo_reset();
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for (tries = 0; tries < 5; tries++) {
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_dev->set_speed(AP_HAL::Device::SPEED_LOW);
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_gyro_init();
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_accel_init();
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_dev->set_speed(AP_HAL::Device::SPEED_HIGH);
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hal.scheduler->delay(10);
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int samples = _register_read(LSM9DS1XG_FIFO_SRC);
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//if samples == 0 -> FIFO empty
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if (samples > 1) {
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break;
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}
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#if LSM9DS1_DEBUG
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_dump_registers();
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#endif
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}
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if (tries == 5) {
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hal.console->printf("Failed to boot LSM9DS1 5 times\n\n");
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goto fail_tries;
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}
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_spi_sem->give();
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return true;
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fail_tries:
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fail_whoami:
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_spi_sem->give();
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return false;
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}
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void AP_InertialSensor_LSM9DS1::_fifo_reset()
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{
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_dev->set_speed(AP_HAL::Device::SPEED_LOW);
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//Disable FIFO
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int reg_9 = _register_read(LSM9DS1XG_CTRL_REG9);
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_dev->write_register(LSM9DS1XG_CTRL_REG9, reg_9 & ~0x02);
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//Enable Bypass for reset FIFO
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_dev->write_register(LSM9DS1XG_FIFO_CTRL, LSM9DS1XG_FIFO_CTRL_FMODE_BYPASS);
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//Enable FIFO and Disable I2C
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_dev->write_register(LSM9DS1XG_CTRL_REG9,LSM9DS1XG_CTRL_REG9_FIFO_EN | LSM9DS1XG_CTRL_REG9_I2C_DISABLE);
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//Enable block data update, allow auto-increment during multiple byte read
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_dev->write_register(LSM9DS1XG_CTRL_REG8, LSM9DS1XG_CTRL_REG8_BDU | LSM9DS1XG_CTRL_REG8_IF_ADD_INC);
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hal.scheduler->delay_microseconds(1);
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//Enable FIFO stream mode and set watermark at 32 samples
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_dev->write_register(LSM9DS1XG_FIFO_CTRL, 0x1F | LSM9DS1XG_FIFO_CTRL_FMODE_FIFO);
|
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hal.scheduler->delay_microseconds(1);
|
|
|
|
_dev->set_speed(AP_HAL::Device::SPEED_HIGH);
|
|
|
|
notify_accel_fifo_reset(_accel_instance);
|
|
notify_gyro_fifo_reset(_gyro_instance);
|
|
}
|
|
|
|
/*
|
|
start the sensor going
|
|
*/
|
|
void AP_InertialSensor_LSM9DS1::start(void)
|
|
{
|
|
if (!_imu.register_gyro(_gyro_instance, 952, _dev->get_bus_id_devtype(DEVTYPE_GYR_LSM9DS1)) ||
|
|
!_imu.register_accel(_accel_instance, 952, _dev->get_bus_id_devtype(DEVTYPE_ACC_LSM9DS1))) {
|
|
return;
|
|
}
|
|
|
|
set_accel_orientation(_accel_instance, _rotation);
|
|
set_gyro_orientation(_gyro_instance, _rotation);
|
|
|
|
_set_accel_max_abs_offset(_accel_instance, 5.0f);
|
|
|
|
/* start the timer process to read samples */
|
|
_dev->register_periodic_callback(1000, FUNCTOR_BIND_MEMBER(&AP_InertialSensor_LSM9DS1::_poll_data, void));
|
|
}
|
|
|
|
uint8_t AP_InertialSensor_LSM9DS1::_register_read(uint8_t reg)
|
|
{
|
|
uint8_t val = 0;
|
|
_dev->read_registers(reg, &val, 1);
|
|
return val;
|
|
}
|
|
|
|
|
|
void AP_InertialSensor_LSM9DS1::_register_write(uint8_t reg, uint8_t val, bool checked)
|
|
{
|
|
_dev->write_register(reg, val, checked);
|
|
}
|
|
|
|
void AP_InertialSensor_LSM9DS1::_gyro_init()
|
|
{
|
|
_register_write(LSM9DS1XG_CTRL_REG1_G, LSM9DS1XG_CTRL_REG1_G_ODR_G_952Hz |
|
|
LSM9DS1XG_CTRL_REG1_FS_G_2000DPS);
|
|
hal.scheduler->delay(1);
|
|
|
|
_register_write(LSM9DS1XG_CTRL_REG4, LSM9DS1XG_CTRL_REG4_Zen_G |
|
|
LSM9DS1XG_CTRL_REG4_Yen_G |
|
|
LSM9DS1XG_CTRL_REG4_Xen_G);
|
|
_set_gyro_scale();
|
|
hal.scheduler->delay(1);
|
|
}
|
|
|
|
void AP_InertialSensor_LSM9DS1::_accel_init()
|
|
{
|
|
_register_write(LSM9DS1XG_CTRL_REG6_XL, LSM9DS1XG_CTRL_REG6_XL_ODR_XL_952Hz |
|
|
LSM9DS1XG_CTRL_REG6_XL_FS_XL_16G);
|
|
hal.scheduler->delay(1);
|
|
|
|
_register_write(LSM9DS1XG_CTRL_REG5_XL, LSM9DS1XG_CTRL_REG5_XL_Zen_XL |
|
|
LSM9DS1XG_CTRL_REG5_XL_Yen_XL |
|
|
LSM9DS1XG_CTRL_REG5_XL_Xen_XL);
|
|
_set_accel_scale(A_SCALE_16G);
|
|
hal.scheduler->delay(1);
|
|
}
|
|
|
|
void AP_InertialSensor_LSM9DS1::_set_gyro_scale()
|
|
{
|
|
/* scale value from datasheet 2000 mdps/digit */
|
|
_gyro_scale = 70;
|
|
/* convert mdps/digit to dps/digit */
|
|
_gyro_scale /= 1000;
|
|
/* convert dps/digit to (rad/s)/digit */
|
|
_gyro_scale *= DEG_TO_RAD;
|
|
}
|
|
|
|
void AP_InertialSensor_LSM9DS1::_set_accel_scale(accel_scale scale)
|
|
{
|
|
/*
|
|
* Possible accelerometer scales (and their register bit settings) are:
|
|
* 2 g (000), 4g (001), 6g (010) 8g (011), 16g (100). Here's a bit of an
|
|
* algorithm to calculate g/(ADC tick) based on that 3-bit value:
|
|
*/
|
|
_accel_scale = (((float) scale + 1.0f) * 2.0f) / 32768.0f;
|
|
if (scale == A_SCALE_16G) {
|
|
/* the datasheet shows an exception for +-16G */
|
|
_accel_scale = 0.000732f;
|
|
}
|
|
/* convert to G/LSB to (m/s/s)/LSB */
|
|
_accel_scale *= GRAVITY_MSS;
|
|
}
|
|
|
|
/**
|
|
* Timer process to poll for new data from the LSM9DS1.
|
|
*/
|
|
void AP_InertialSensor_LSM9DS1::_poll_data()
|
|
{
|
|
uint16_t samples = _register_read(LSM9DS1XG_FIFO_SRC);
|
|
|
|
|
|
samples = samples & LSM9DS1XG_FIFO_SRC_UNREAD_SAMPLES;
|
|
if (samples > 1) {
|
|
_read_data_transaction_g(samples);
|
|
_read_data_transaction_x(samples);
|
|
}
|
|
|
|
if (samples == 32) {
|
|
_fifo_reset();
|
|
}
|
|
|
|
// check next register value for correctness
|
|
AP_HAL::Device::checkreg reg;
|
|
if (!_dev->check_next_register(reg)) {
|
|
log_register_change(_dev->get_bus_id(), reg);
|
|
_inc_accel_error_count(_accel_instance);
|
|
}
|
|
}
|
|
|
|
void AP_InertialSensor_LSM9DS1::_read_data_transaction_x(uint16_t samples)
|
|
{
|
|
struct sensor_raw_data raw_data = { };
|
|
int32_t _accel_bias[3] = {0, 0, 0};
|
|
|
|
const uint8_t _reg = LSM9DS1XG_OUT_X_L_XL | 0x80;
|
|
|
|
// Read the accel data stored in the FIFO
|
|
for (int i = 0; i < samples; i++)
|
|
{
|
|
struct sensor_raw_data raw_data_temp = { };
|
|
|
|
if (!_dev->transfer(&_reg, 1, (uint8_t *) &raw_data_temp, sizeof(raw_data_temp))) {
|
|
hal.console->printf("LSM9DS1: error reading accelerometer\n");
|
|
return;
|
|
}
|
|
|
|
_accel_bias[0] += (int32_t) raw_data_temp.x; // Sum individual signed 16-bit biases to get accumulated signed 32-bit biases
|
|
_accel_bias[1] += (int32_t) raw_data_temp.y;
|
|
_accel_bias[2] += (int32_t) raw_data_temp.z;
|
|
}
|
|
|
|
raw_data.x = _accel_bias[0] / samples; // average the data
|
|
raw_data.y = _accel_bias[1] / samples;
|
|
raw_data.z = _accel_bias[2] / samples;
|
|
|
|
|
|
Vector3f accel_data(raw_data.x, raw_data.y, -raw_data.z);
|
|
accel_data *= _accel_scale;
|
|
|
|
_rotate_and_correct_accel(_accel_instance, accel_data);
|
|
_notify_new_accel_raw_sample(_accel_instance, accel_data);
|
|
}
|
|
|
|
/*
|
|
* read from the data registers and update filtered data
|
|
*/
|
|
void AP_InertialSensor_LSM9DS1::_read_data_transaction_g(uint16_t samples)
|
|
{
|
|
struct sensor_raw_data raw_data = { };
|
|
int32_t _gyro_bias[3] = {0, 0, 0};
|
|
|
|
const uint8_t _reg = LSM9DS1XG_OUT_X_L_G | 0x80;
|
|
|
|
// Read the gyro data stored in the FIFO
|
|
for (int i = 0; i < samples; i++)
|
|
{
|
|
struct sensor_raw_data raw_data_temp = { };
|
|
|
|
if (!_dev->transfer(&_reg, 1, (uint8_t *) &raw_data_temp, sizeof(raw_data_temp))) {
|
|
hal.console->printf("LSM9DS1: error reading gyroscope\n");
|
|
return;
|
|
}
|
|
|
|
_gyro_bias[0] += (int32_t) raw_data_temp.x; // Sum individual signed 16-bit biases to get accumulated signed 32-bit biases
|
|
_gyro_bias[1] += (int32_t) raw_data_temp.y;
|
|
_gyro_bias[2] += (int32_t) raw_data_temp.z;
|
|
}
|
|
|
|
raw_data.x = _gyro_bias[0] / samples; // average the data
|
|
raw_data.y = _gyro_bias[1] / samples;
|
|
raw_data.z = _gyro_bias[2] / samples;
|
|
|
|
Vector3f gyro_data(raw_data.x, raw_data.y, -raw_data.z);
|
|
gyro_data *= _gyro_scale;
|
|
|
|
_rotate_and_correct_gyro(_gyro_instance, gyro_data);
|
|
_notify_new_gyro_raw_sample(_gyro_instance, gyro_data);
|
|
}
|
|
|
|
bool AP_InertialSensor_LSM9DS1::update()
|
|
{
|
|
update_gyro(_gyro_instance);
|
|
update_accel(_accel_instance);
|
|
|
|
return true;
|
|
}
|
|
|
|
#if LSM9DS1_DEBUG
|
|
/*
|
|
* dump all config registers - used for debug
|
|
*/
|
|
void AP_InertialSensor_LSM9DS1::_dump_registers(void)
|
|
{
|
|
hal.console->println("LSM9DS1 registers:");
|
|
|
|
const uint8_t first = LSM9DS1XG_ACT_THS;
|
|
const uint8_t last = LSM9DS1XG_INT_GEN_DUR_G;
|
|
for (uint8_t reg=first; reg<=last; reg++) {
|
|
uint8_t v = _register_read(reg);
|
|
hal.console->printf("%02x:%02x ", reg, v);
|
|
if ((reg - (first-1)) % 16 == 0) {
|
|
hal.console->println();
|
|
}
|
|
}
|
|
hal.console->println();
|
|
}
|
|
#endif
|