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ardupilot/libraries/AP_InertialSensor/AP_InertialSensor_LSM9DS0.cpp

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/*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <AP_HAL/AP_HAL.h>
#include "AP_InertialSensor_LSM9DS0.h"
#include <utility>
extern const AP_HAL::HAL &hal;
#define LSM9DS0_DRY_X_PIN -1
#define LSM9DS0_DRY_G_PIN -1
#define LSM9DS0_G_WHOAMI 0xD4 // L3GD20
#define LSM9DS0_G_WHOAMI_H 0xD7 // L3GD20H
#define LSM9DS0_XM_WHOAMI 0x49
////////////////////////////
// LSM9DS0 Gyro Registers //
////////////////////////////
#define WHO_AM_I_G 0x0F
#define CTRL_REG1_G 0x20
# define CTRL_REG1_G_DR_95Hz_BW_12500mHz (0x0 << 4)
# define CTRL_REG1_G_DR_95Hz_BW_25Hz (0x1 << 4)
# define CTRL_REG1_G_DR_190Hz_BW_12500mHz (0x4 << 4)
# define CTRL_REG1_G_DR_190Hz_BW_25Hz (0x5 << 4)
# define CTRL_REG1_G_DR_190Hz_BW_50Hz (0x6 << 4)
# define CTRL_REG1_G_DR_190Hz_BW_70Hz (0x7 << 4)
# define CTRL_REG1_G_DR_380Hz_BW_20Hz (0x8 << 4)
# define CTRL_REG1_G_DR_380Hz_BW_25Hz (0x9 << 4)
# define CTRL_REG1_G_DR_380Hz_BW_50Hz (0xA << 4)
# define CTRL_REG1_G_DR_380Hz_BW_100Hz (0xB << 4)
# define CTRL_REG1_G_DR_760Hz_BW_30Hz (0xC << 4)
# define CTRL_REG1_G_DR_760Hz_BW_35Hz (0xD << 4)
# define CTRL_REG1_G_DR_760Hz_BW_50Hz (0xE << 4)
# define CTRL_REG1_G_DR_760Hz_BW_100Hz (0xF << 4)
# define CTRL_REG1_G_PD (0x1 << 3)
# define CTRL_REG1_G_ZEN (0x1 << 2)
# define CTRL_REG1_G_YEN (0x1 << 1)
# define CTRL_REG1_G_XEN (0x1 << 0)
#define CTRL_REG2_G 0x21
# define CTRL_REG2_G_HPM_NORMAL_RESET (0x0 << 4)
# define CTRL_REG2_G_HPM_REFERENCE (0x1 << 4)
# define CTRL_REG2_G_HPM_NORMAL (0x2 << 4)
# define CTRL_REG2_G_HPM_AUTORESET (0x3 << 4)
# define CTRL_REG2_G_HPCF_0 (0x0 << 0)
# define CTRL_REG2_G_HPCF_1 (0x1 << 0)
# define CTRL_REG2_G_HPCF_2 (0x2 << 0)
# define CTRL_REG2_G_HPCF_3 (0x3 << 0)
# define CTRL_REG2_G_HPCF_4 (0x4 << 0)
# define CTRL_REG2_G_HPCF_5 (0x5 << 0)
# define CTRL_REG2_G_HPCF_6 (0x6 << 0)
# define CTRL_REG2_G_HPCF_7 (0x7 << 0)
# define CTRL_REG2_G_HPCF_8 (0x8 << 0)
# define CTRL_REG2_G_HPCF_9 (0x9 << 0)
#define CTRL_REG3_G 0x22
# define CTRL_REG3_G_I1_INT1 (0x1 << 7)
# define CTRL_REG3_G_I1_BOOT (0x1 << 6)
# define CTRL_REG3_G_H_LACTIVE (0x1 << 5)
# define CTRL_REG3_G_PP_OD (0x1 << 4)
# define CTRL_REG3_G_I2_DRDY (0x1 << 3)
# define CTRL_REG3_G_I2_WTM (0x1 << 2)
# define CTRL_REG3_G_I2_ORUN (0x1 << 1)
# define CTRL_REG3_G_I2_EMPTY (0x1 << 0)
#define CTRL_REG4_G 0x23
# define CTRL_REG4_G_BDU (0x1 << 7)
# define CTRL_REG4_G_BLE (0x1 << 6)
# define CTRL_REG4_G_FS_245DPS (0x0 << 4)
# define CTRL_REG4_G_FS_500DPS (0x1 << 4)
# define CTRL_REG4_G_FS_2000DPS (0x2 << 4)
# define CTRL_REG4_G_ST_NORMAL (0x0 << 1)
# define CTRL_REG4_G_ST_0 (0x1 << 1)
# define CTRL_REG4_G_ST_1 (0x3 << 1)
# define CTRL_REG4_G_SIM_3WIRE (0x1 << 0)
#define CTRL_REG5_G 0x24
# define CTRL_REG5_G_BOOT (0x1 << 7)
# define CTRL_REG5_G_FIFO_EN (0x1 << 6)
# define CTRL_REG5_G_HPEN (0x1 << 4)
# define CTRL_REG5_G_INT1_SEL_00 (0x0 << 2)
# define CTRL_REG5_G_INT1_SEL_01 (0x1 << 2)
# define CTRL_REG5_G_INT1_SEL_10 (0x2 << 2)
# define CTRL_REG5_G_INT1_SEL_11 (0x3 << 2)
# define CTRL_REG5_G_OUT_SEL_00 (0x0 << 0)
# define CTRL_REG5_G_OUT_SEL_01 (0x1 << 0)
# define CTRL_REG5_G_OUT_SEL_10 (0x2 << 0)
# define CTRL_REG5_G_OUT_SEL_11 (0x3 << 0)
#define REFERENCE_G 0x25
#define STATUS_REG_G 0x27
# define STATUS_REG_G_ZYXOR (0x1 << 7)
# define STATUS_REG_G_ZOR (0x1 << 6)
# define STATUS_REG_G_YOR (0x1 << 5)
# define STATUS_REG_G_XOR (0x1 << 4)
# define STATUS_REG_G_ZYXDA (0x1 << 3)
# define STATUS_REG_G_ZDA (0x1 << 2)
# define STATUS_REG_G_YDA (0x1 << 1)
# define STATUS_REG_G_XDA (0x1 << 0)
#define OUT_X_L_G 0x28
#define OUT_X_H_G 0x29
#define OUT_Y_L_G 0x2A
#define OUT_Y_H_G 0x2B
#define OUT_Z_L_G 0x2C
#define OUT_Z_H_G 0x2D
#define FIFO_CTRL_REG_G 0x2E
# define FIFO_CTRL_REG_G_FM_BYPASS (0x0 << 5)
# define FIFO_CTRL_REG_G_FM_FIFO (0x1 << 5)
# define FIFO_CTRL_REG_G_FM_STREAM (0x2 << 5)
# define FIFO_CTRL_REG_G_FM_STREAM_TO_FIFO (0x3 << 5)
# define FIFO_CTRL_REG_G_FM_BYPASS_TO_STREAM (0x4 << 5)
# define FIFO_CTRL_REG_G_WTM_MASK 0x1F
#define FIFO_SRC_REG_G 0x2F
# define FIFO_SRC_REG_G_WTM (0x1 << 7)
# define FIFO_SRC_REG_G_OVRN (0x1 << 6)
# define FIFO_SRC_REG_G_EMPTY (0x1 << 5)
# define FIFO_SRC_REG_G_FSS_MASK 0x1F
#define INT1_CFG_G 0x30
# define INT1_CFG_G_AND_OR (0x1 << 7)
# define INT1_CFG_G_LIR (0x1 << 6)
# define INT1_CFG_G_ZHIE (0x1 << 5)
# define INT1_CFG_G_ZLIE (0x1 << 4)
# define INT1_CFG_G_YHIE (0x1 << 3)
# define INT1_CFG_G_YLIE (0x1 << 2)
# define INT1_CFG_G_XHIE (0x1 << 1)
# define INT1_CFG_G_XLIE (0x1 << 0)
#define INT1_SRC_G 0x31
# define INT1_SRC_G_IA (0x1 << 6)
# define INT1_SRC_G_ZH (0x1 << 5)
# define INT1_SRC_G_ZL (0x1 << 4)
# define INT1_SRC_G_YH (0x1 << 3)
# define INT1_SRC_G_YL (0x1 << 2)
# define INT1_SRC_G_XH (0x1 << 1)
# define INT1_SRC_G_XL (0x1 << 0)
#define INT1_THS_XH_G 0x32
#define INT1_THS_XL_G 0x33
#define INT1_THS_YH_G 0x34
#define INT1_THS_YL_G 0x35
#define INT1_THS_ZH_G 0x36
#define INT1_THS_ZL_G 0x37
#define INT1_DURATION_G 0x38
# define INT1_DURATION_G_WAIT (0x1 << 7)
# define INT1_DURATION_G_D_MASK 0x7F
//////////////////////////////////////////
// LSM9DS0 Accel/Magneto (XM) Registers //
//////////////////////////////////////////
#define OUT_TEMP_L_XM 0x05
#define OUT_TEMP_H_XM 0x06
#define STATUS_REG_M 0x07
# define STATUS_REG_M_ZYXMOR (0x1 << 7)
# define STATUS_REG_M_ZMOR (0x1 << 6)
# define STATUS_REG_M_YMOR (0x1 << 5)
# define STATUS_REG_M_XMOR (0x1 << 4)
# define STATUS_REG_M_ZYXMDA (0x1 << 3)
# define STATUS_REG_M_ZMDA (0x1 << 2)
# define STATUS_REG_M_YMDA (0x1 << 1)
# define STATUS_REG_M_XMDA (0x1 << 0)
#define OUT_X_L_M 0x08
#define OUT_X_H_M 0x09
#define OUT_Y_L_M 0x0A
#define OUT_Y_H_M 0x0B
#define OUT_Z_L_M 0x0C
#define OUT_Z_H_M 0x0D
#define WHO_AM_I_XM 0x0F
#define INT_CTRL_REG_M 0x12
# define INT_CTRL_REG_M_XMIEN (0x1 << 7)
# define INT_CTRL_REG_M_YMIEN (0x1 << 6)
# define INT_CTRL_REG_M_ZMIEN (0x1 << 5)
# define INT_CTRL_REG_M_PP_OD (0x1 << 4)
# define INT_CTRL_REG_M_IEA (0x1 << 3)
# define INT_CTRL_REG_M_IEL (0x1 << 2)
# define INT_CTRL_REG_M_4D (0x1 << 1)
# define INT_CTRL_REG_M_MIEN (0x1 << 0)
#define INT_SRC_REG_M 0x13
# define INT_SRC_REG_M_M_PTH_X (0x1 << 7)
# define INT_SRC_REG_M_M_PTH_Y (0x1 << 6)
# define INT_SRC_REG_M_M_PTH_Z (0x1 << 5)
# define INT_SRC_REG_M_M_NTH_X (0x1 << 4)
# define INT_SRC_REG_M_M_NTH_Y (0x1 << 3)
# define INT_SRC_REG_M_M_NTH_Z (0x1 << 2)
# define INT_SRC_REG_M_MROI (0x1 << 1)
# define INT_SRC_REG_M_MINT (0x1 << 0)
#define INT_THS_L_M 0x14
#define INT_THS_H_M 0x15
#define OFFSET_X_L_M 0x16
#define OFFSET_X_H_M 0x17
#define OFFSET_Y_L_M 0x18
#define OFFSET_Y_H_M 0x19
#define OFFSET_Z_L_M 0x1A
#define OFFSET_Z_H_M 0x1B
#define REFERENCE_X 0x1C
#define REFERENCE_Y 0x1D
#define REFERENCE_Z 0x1E
#define CTRL_REG0_XM 0x1F
# define CTRL_REG0_XM_B00T (0x1 << 7)
# define CTRL_REG0_XM_FIFO_EN (0x1 << 6)
# define CTRL_REG0_XM_WTM_EN (0x1 << 5)
# define CTRL_REG0_XM_HP_CLICK (0x1 << 2)
# define CTRL_REG0_XM_HPIS1 (0x1 << 1)
# define CTRL_REG0_XM_HPIS2 (0x1 << 0)
#define CTRL_REG1_XM 0x20
# define CTRL_REG1_XM_AODR_POWERDOWN (0x0 << 4)
# define CTRL_REG1_XM_AODR_3125mHz (0x1 << 4)
# define CTRL_REG1_XM_AODR_6250mHz (0x2 << 4)
# define CTRL_REG1_XM_AODR_12500mHz (0x3 << 4)
# define CTRL_REG1_XM_AODR_25Hz (0x4 << 4)
# define CTRL_REG1_XM_AODR_50Hz (0x5 << 4)
# define CTRL_REG1_XM_AODR_100Hz (0x6 << 4)
# define CTRL_REG1_XM_AODR_200Hz (0x7 << 4)
# define CTRL_REG1_XM_AODR_400Hz (0x8 << 4)
# define CTRL_REG1_XM_AODR_800Hz (0x9 << 4)
# define CTRL_REG1_XM_AODR_1600Hz (0xA << 4)
# define CTRL_REG1_XM_BDU (0x1 << 3)
# define CTRL_REG1_XM_AZEN (0x1 << 2)
# define CTRL_REG1_XM_AYEN (0x1 << 1)
# define CTRL_REG1_XM_AXEN (0x1 << 0)
#define CTRL_REG2_XM 0x21
# define CTRL_REG2_XM_ABW_773Hz (0x0 << 6)
# define CTRL_REG2_XM_ABW_194Hz (0x1 << 6)
# define CTRL_REG2_XM_ABW_362Hz (0x2 << 6)
# define CTRL_REG2_XM_ABW_50Hz (0x3 << 6)
# define CTRL_REG2_XM_AFS_2G (0x0 << 3)
# define CTRL_REG2_XM_AFS_4G (0x1 << 3)
# define CTRL_REG2_XM_AFS_6G (0x2 << 3)
# define CTRL_REG2_XM_AFS_8G (0x3 << 3)
# define CTRL_REG2_XM_AFS_16G (0x4 << 3)
# define CTRL_REG2_XM_AST_NORMAL (0x0 << 1)
# define CTRL_REG2_XM_AST_POSITIVE (0x1 << 1)
# define CTRL_REG2_XM_AST_NEGATIVE (0x2 << 1)
# define CTRL_REG2_XM_SIM_3WIRE (0x1 << 0)
#define CTRL_REG3_XM 0x22
# define CTRL_REG3_XM_P1_BOOT (0x1 << 7)
# define CTRL_REG3_XM_P1_TAP (0x1 << 6)
# define CTRL_REG3_XM_P1_INT1 (0x1 << 5)
# define CTRL_REG3_XM_P1_INT2 (0x1 << 4)
# define CTRL_REG3_XM_P1_INTM (0x1 << 3)
# define CTRL_REG3_XM_P1_DRDYA (0x1 << 2)
# define CTRL_REG3_XM_P1_DRDYM (0x1 << 1)
# define CTRL_REG3_XM_P1_EMPTY (0x1 << 0)
#define CTRL_REG4_XM 0x23
# define CTRL_REG4_XM_P2_TAP (0x1 << 7)
# define CTRL_REG4_XM_P2_INT1 (0x1 << 6)
# define CTRL_REG4_XM_P2_INT2 (0x1 << 5)
# define CTRL_REG4_XM_P2_INTM (0x1 << 4)
# define CTRL_REG4_XM_P2_DRDYA (0x1 << 3)
# define CTRL_REG4_XM_P2_DRDYM (0x1 << 2)
# define CTRL_REG4_XM_P2_OVERRUN (0x1 << 1)
# define CTRL_REG4_XM_P2_WTM (0x1 << 0)
#define CTRL_REG5_XM 0x24
# define CTRL_REG5_XM_TEMP_EN (0x1 << 7)
# define CTRL_REG5_XM_M_RES_LOW (0x0 << 5)
# define CTRL_REG5_XM_M_RES_HIGH (0x3 << 5)
# define CTRL_REG5_XM_ODR_3125mHz (0x0 << 2)
# define CTRL_REG5_XM_ODR_6250mHz (0x1 << 2)
# define CTRL_REG5_XM_ODR_12500mHz (0x2 << 2)
# define CTRL_REG5_XM_ODR_25Hz (0x3 << 2)
# define CTRL_REG5_XM_ODR_50Hz (0x4 << 2)
# define CTRL_REG5_XM_ODR_100Hz (0x5 << 2)
# define CTRL_REG5_XM_LIR2 (0x1 << 1)
# define CTRL_REG5_XM_LIR1 (0x1 << 0)
#define CTRL_REG6_XM 0x25
# define CTRL_REG6_XM_MFS_2Gs (0x0 << 5)
# define CTRL_REG6_XM_MFS_4Gs (0x1 << 5)
# define CTRL_REG6_XM_MFS_8Gs (0x2 << 5)
# define CTRL_REG6_XM_MFS_12Gs (0x3 << 5)
#define CTRL_REG7_XM 0x26
# define CTRL_REG7_XM_AHPM_NORMAL_RESET (0x0 << 6)
# define CTRL_REG7_XM_AHPM_REFERENCE (0x1 << 6)
# define CTRL_REG7_XM_AHPM_NORMAL (0x2 << 6)
# define CTRL_REG7_XM_AHPM_AUTORESET (0x3 << 6)
# define CTRL_REG7_XM_AFDS (0x1 << 5)
# define CTRL_REG7_XM_MLP (0x1 << 2)
# define CTRL_REG7_XM_MD_CONTINUOUS (0x0 << 0)
# define CTRL_REG7_XM_MD_SINGLE (0x1 << 0)
# define CTRL_REG7_XM_MD_POWERDOWN (0x2 << 0)
#define STATUS_REG_A 0x27
# define STATUS_REG_A_ZYXAOR (0x1 << 7)
# define STATUS_REG_A_ZAOR (0x1 << 6)
# define STATUS_REG_A_YAOR (0x1 << 5)
# define STATUS_REG_A_XAOR (0x1 << 4)
# define STATUS_REG_A_ZYXADA (0x1 << 3)
# define STATUS_REG_A_ZADA (0x1 << 2)
# define STATUS_REG_A_YADA (0x1 << 1)
# define STATUS_REG_A_XADA (0x1 << 0)
#define OUT_X_L_A 0x28
#define OUT_X_H_A 0x29
#define OUT_Y_L_A 0x2A
#define OUT_Y_H_A 0x2B
#define OUT_Z_L_A 0x2C
#define OUT_Z_H_A 0x2D
#define FIFO_CTRL_REG 0x2E
# define FIFO_CTRL_REG_FM_BYPASS (0x0 << 5)
# define FIFO_CTRL_REG_FM_FIFO (0x1 << 5)
# define FIFO_CTRL_REG_FM_STREAM (0x2 << 5)
# define FIFO_CTRL_REG_FM_STREAM_TO_FIFO (0x3 << 5)
# define FIFO_CTRL_REG_FM_BYPASS_TO_STREAM (0x4 << 5)
# define FIFO_CTRL_REG_FTH_MASK 0x1F
#define FIFO_SRC_REG 0x2F
# define FIFO_SRC_REG_WTM (0x1 << 7)
# define FIFO_SRC_REG_OVRN (0x1 << 6)
# define FIFO_SRC_REG_EMPTY (0x1 << 5)
# define FIFO_SRC_REG_FSS_MASK 0x1F
#define INT_GEN_1_REG 0x30
# define INT_GEN_1_REG_AOI (0x1 << 7)
# define INT_GEN_1_REG_6D (0x1 << 6)
# define INT_GEN_1_REG_ZHIE_ZUPE (0x1 << 5)
# define INT_GEN_1_REG_ZLIE_ZDOWNE (0x1 << 4)
# define INT_GEN_1_REG_YHIE_YUPE (0x1 << 3)
# define INT_GEN_1_REG_YLIE_YDOWNE (0x1 << 2)
# define INT_GEN_1_REG_XHIE_XUPE (0x1 << 1)
# define INT_GEN_1_REG_XLIE_XDOWNE (0x1 << 0)
#define INT_GEN_1_SRC 0x31
# define INT_GEN_1_SRC_IA (0x1 << 6)
# define INT_GEN_1_SRC_ZH (0x1 << 5)
# define INT_GEN_1_SRC_ZL (0x1 << 4)
# define INT_GEN_1_SRC_YH (0x1 << 3)
# define INT_GEN_1_SRC_YL (0x1 << 2)
# define INT_GEN_1_SRC_XH (0x1 << 1)
# define INT_GEN_1_SRC_XL (0x1 << 0)
#define INT_GEN_1_THS 0x32
#define INT_GEN_1_DURATION 0x33
#define INT_GEN_2_REG 0x34
# define INT_GEN_2_REG_AOI (0x1 << 7)
# define INT_GEN_2_REG_6D (0x1 << 6)
# define INT_GEN_2_REG_ZHIE_ZUPE (0x1 << 5)
# define INT_GEN_2_REG_ZLIE_ZDOWNE (0x1 << 4)
# define INT_GEN_2_REG_YHIE_YUPE (0x1 << 3)
# define INT_GEN_2_REG_YLIE_YDOWNE (0x1 << 2)
# define INT_GEN_2_REG_XHIE_XUPE (0x1 << 1)
# define INT_GEN_2_REG_XLIE_XDOWNE (0x1 << 0)
#define INT_GEN_2_SRC 0x35
# define INT_GEN_2_SRC_IA (0x1 << 6)
# define INT_GEN_2_SRC_ZH (0x1 << 5)
# define INT_GEN_2_SRC_ZL (0x1 << 4)
# define INT_GEN_2_SRC_YH (0x1 << 3)
# define INT_GEN_2_SRC_YL (0x1 << 2)
# define INT_GEN_2_SRC_XH (0x1 << 1)
# define INT_GEN_2_SRC_XL (0x1 << 0)
#define INT_GEN_2_THS 0x36
#define INT_GEN_2_DURATION 0x37
#define CLICK_CFG 0x38
# define CLICK_CFG_ZD (0x1 << 5)
# define CLICK_CFG_ZS (0x1 << 4)
# define CLICK_CFG_YD (0x1 << 3)
# define CLICK_CFG_YS (0x1 << 2)
# define CLICK_CFG_XD (0x1 << 1)
# define CLICK_CFG_XS (0x1 << 0)
#define CLICK_SRC 0x39
# define CLICK_SRC_IA (0x1 << 6)
# define CLICK_SRC_DCLICK (0x1 << 5)
# define CLICK_SRC_SCLICK (0x1 << 4)
# define CLICK_SRC_SIGN (0x1 << 3)
# define CLICK_SRC_Z (0x1 << 2)
# define CLICK_SRC_Y (0x1 << 1)
# define CLICK_SRC_X (0x1 << 0)
#define CLICK_THS 0x3A
#define TIME_LIMIT 0x3B
#define TIME_LATENCY 0x3C
#define TIME_WINDOW 0x3D
#define ACT_THS 0x3E
#define ACT_DUR 0x3F
AP_InertialSensor_LSM9DS0::AP_InertialSensor_LSM9DS0(AP_InertialSensor &imu,
AP_HAL::OwnPtr<AP_HAL::Device> dev_gyro,
AP_HAL::OwnPtr<AP_HAL::Device> dev_accel,
int drdy_pin_num_a,
int drdy_pin_num_g,
enum Rotation rotation_a,
enum Rotation rotation_g,
enum Rotation rotation_gH)
: AP_InertialSensor_Backend(imu)
, _dev_gyro(std::move(dev_gyro))
, _dev_accel(std::move(dev_accel))
, _drdy_pin_num_a(drdy_pin_num_a)
, _drdy_pin_num_g(drdy_pin_num_g)
, _rotation_a(rotation_a)
, _rotation_g(rotation_g)
, _rotation_gH(rotation_gH)
{
}
AP_InertialSensor_Backend *AP_InertialSensor_LSM9DS0::probe(AP_InertialSensor &_imu,
AP_HAL::OwnPtr<AP_HAL::Device> dev_gyro,
AP_HAL::OwnPtr<AP_HAL::Device> dev_accel,
enum Rotation rotation_a,
enum Rotation rotation_g,
enum Rotation rotation_gH)
{
if (!dev_gyro || !dev_accel) {
return nullptr;
}
AP_InertialSensor_LSM9DS0 *sensor =
new AP_InertialSensor_LSM9DS0(_imu, std::move(dev_gyro), std::move(dev_accel),
LSM9DS0_DRY_X_PIN, LSM9DS0_DRY_G_PIN,
rotation_a, rotation_g, rotation_gH);
if (!sensor || !sensor->_init_sensor()) {
delete sensor;
return nullptr;
}
return sensor;
}
bool AP_InertialSensor_LSM9DS0::_init_sensor()
{
/*
* Same semaphore for both since they necessarily share the same bus (with
* different CS)
*/
_spi_sem = _dev_gyro->get_semaphore();
if (_drdy_pin_num_a >= 0) {
_drdy_pin_a = hal.gpio->channel(_drdy_pin_num_a);
if (_drdy_pin_a == nullptr) {
AP_HAL::panic("LSM9DS0: null accel data-ready GPIO channel\n");
}
_drdy_pin_a->mode(HAL_GPIO_INPUT);
}
if (_drdy_pin_num_g >= 0) {
_drdy_pin_g = hal.gpio->channel(_drdy_pin_num_g);
if (_drdy_pin_g == nullptr) {
AP_HAL::panic("LSM9DS0: null gyro data-ready GPIO channel\n");
}
_drdy_pin_g->mode(HAL_GPIO_INPUT);
}
bool success = _hardware_init();
#if LSM9DS0_DEBUG
_dump_registers();
#endif
return success;
}
bool AP_InertialSensor_LSM9DS0::_hardware_init()
{
if (!_spi_sem->take(HAL_SEMAPHORE_BLOCK_FOREVER)) {
return false;
}
uint8_t tries, whoami;
// set flag for reading registers
_dev_gyro->set_read_flag(0x80);
_dev_accel->set_read_flag(0x80);
whoami_g = _register_read_g(WHO_AM_I_G);
if (whoami_g != LSM9DS0_G_WHOAMI && whoami_g != LSM9DS0_G_WHOAMI_H) {
goto fail_whoami;
}
whoami = _register_read_xm(WHO_AM_I_XM);
if (whoami != LSM9DS0_XM_WHOAMI) {
goto fail_whoami;
}
// setup for register checking
_dev_gyro->setup_checked_registers(5, 20);
_dev_accel->setup_checked_registers(4, 20);
for (tries = 0; tries < 5; tries++) {
_dev_gyro->set_speed(AP_HAL::Device::SPEED_LOW);
_dev_accel->set_speed(AP_HAL::Device::SPEED_LOW);
_gyro_init();
_accel_init();
_dev_gyro->set_speed(AP_HAL::Device::SPEED_HIGH);
_dev_accel->set_speed(AP_HAL::Device::SPEED_HIGH);
hal.scheduler->delay(10);
if (_accel_data_ready() && _gyro_data_ready()) {
break;
}
#if LSM9DS0_DEBUG
_dump_registers();
#endif
}
if (tries == 5) {
hal.console->printf("Failed to boot LSM9DS0 5 times\n\n");
goto fail_tries;
}
_spi_sem->give();
return true;
fail_tries:
fail_whoami:
_spi_sem->give();
return false;
}
/*
start the sensor going
*/
void AP_InertialSensor_LSM9DS0::start(void)
{
_gyro_instance = _imu.register_gyro(760, _dev_gyro->get_bus_id_devtype(DEVTYPE_GYR_L3GD20));
_accel_instance = _imu.register_accel(1000, _dev_accel->get_bus_id_devtype(DEVTYPE_ACC_LSM303D));
if (whoami_g == LSM9DS0_G_WHOAMI_H) {
set_gyro_orientation(_gyro_instance, _rotation_gH);
} else {
set_gyro_orientation(_gyro_instance, _rotation_g);
}
set_accel_orientation(_accel_instance, _rotation_a);
_set_accel_max_abs_offset(_accel_instance, 5.0f);
/* start the timer process to read samples */
_dev_gyro->register_periodic_callback(1000, FUNCTOR_BIND_MEMBER(&AP_InertialSensor_LSM9DS0::_poll_data, void));
}
uint8_t AP_InertialSensor_LSM9DS0::_register_read_xm(uint8_t reg)
{
uint8_t val = 0;
_dev_accel->read_registers(reg, &val, 1);
return val;
}
uint8_t AP_InertialSensor_LSM9DS0::_register_read_g(uint8_t reg)
{
uint8_t val = 0;
_dev_gyro->read_registers(reg, &val, 1);
return val;
}
void AP_InertialSensor_LSM9DS0::_register_write_xm(uint8_t reg, uint8_t val, bool checked)
{
_dev_accel->write_register(reg, val, checked);
}
void AP_InertialSensor_LSM9DS0::_register_write_g(uint8_t reg, uint8_t val, bool checked)
{
_dev_gyro->write_register(reg, val, checked);
}
void AP_InertialSensor_LSM9DS0::_gyro_disable_i2c()
{
uint8_t retries = 10;
while (retries--) {
// add retries
uint8_t a = _register_read_g(0x05);
_register_write_g(0x05, (0x20 | a));
if (_register_read_g(0x05) == (a | 0x20)) {
return;
}
}
AP_HAL::panic("LSM9DS0_G: Unable to disable I2C");
}
void AP_InertialSensor_LSM9DS0::_accel_disable_i2c()
{
uint8_t a = _register_read_xm(0x02);
_register_write_xm(0x02, (0x10 | a));
a = _register_read_xm(0x02);
_register_write_xm(0x02, (0xF7 & a));
a = _register_read_xm(0x15);
_register_write_xm(0x15, (0x80 | a));
a = _register_read_xm(0x02);
_register_write_xm(0x02, (0xE7 & a));
}
void AP_InertialSensor_LSM9DS0::_gyro_init()
{
_gyro_disable_i2c();
hal.scheduler->delay(1);
_register_write_g(CTRL_REG1_G,
CTRL_REG1_G_DR_760Hz_BW_50Hz |
CTRL_REG1_G_PD |
CTRL_REG1_G_ZEN |
CTRL_REG1_G_YEN |
CTRL_REG1_G_XEN, true);
hal.scheduler->delay(1);
_register_write_g(CTRL_REG2_G, 0x00, true);
hal.scheduler->delay(1);
/*
* Gyro data ready on DRDY_G
*/
_register_write_g(CTRL_REG3_G, CTRL_REG3_G_I2_DRDY, true);
hal.scheduler->delay(1);
_register_write_g(CTRL_REG4_G,
CTRL_REG4_G_BDU |
CTRL_REG4_G_FS_2000DPS, true);
_set_gyro_scale(G_SCALE_2000DPS);
hal.scheduler->delay(1);
_register_write_g(CTRL_REG5_G, 0x00, true);
hal.scheduler->delay(1);
}
void AP_InertialSensor_LSM9DS0::_accel_init()
{
_accel_disable_i2c();
hal.scheduler->delay(1);
_register_write_xm(CTRL_REG0_XM, 0x00, true);
hal.scheduler->delay(1);
_register_write_xm(CTRL_REG1_XM,
CTRL_REG1_XM_AODR_1600Hz |
CTRL_REG1_XM_BDU |
CTRL_REG1_XM_AZEN |
CTRL_REG1_XM_AYEN |
CTRL_REG1_XM_AXEN, true);
hal.scheduler->delay(1);
_register_write_xm(CTRL_REG2_XM,
CTRL_REG2_XM_ABW_194Hz |
CTRL_REG2_XM_AFS_16G, true);
_set_accel_scale(A_SCALE_16G);
hal.scheduler->delay(1);
/* Accel data ready on INT1 */
_register_write_xm(CTRL_REG3_XM, CTRL_REG3_XM_P1_DRDYA, true);
hal.scheduler->delay(1);
}
void AP_InertialSensor_LSM9DS0::_set_gyro_scale(gyro_scale scale)
{
/* scales values from datasheet in mdps/digit */
switch (scale) {
case G_SCALE_245DPS:
_gyro_scale = 8.75;
break;
case G_SCALE_500DPS:
_gyro_scale = 17.50;
break;
case G_SCALE_2000DPS:
_gyro_scale = 70;
break;
}
/* convert mdps/digit to dps/digit */
_gyro_scale /= 1000;
/* convert dps/digit to (rad/s)/digit */
_gyro_scale *= DEG_TO_RAD;
}
void AP_InertialSensor_LSM9DS0::_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 LSM9DS0.
*/
void AP_InertialSensor_LSM9DS0::_poll_data()
{
if (_gyro_data_ready()) {
_read_data_transaction_g();
}
if (_accel_data_ready()) {
_read_data_transaction_a();
}
// check next register value for correctness
if (!_dev_gyro->check_next_register()) {
_inc_gyro_error_count(_gyro_instance);
}
if (!_dev_accel->check_next_register()) {
_inc_accel_error_count(_accel_instance);
}
}
bool AP_InertialSensor_LSM9DS0::_accel_data_ready()
{
if (_drdy_pin_a != nullptr) {
return _drdy_pin_a->read() != 0;
}
uint8_t status = _register_read_xm(STATUS_REG_A);
return status & STATUS_REG_A_ZYXADA;
}
bool AP_InertialSensor_LSM9DS0::_gyro_data_ready()
{
if (_drdy_pin_g != nullptr) {
return _drdy_pin_g->read() != 0;
}
uint8_t status = _register_read_g(STATUS_REG_G);
return status & STATUS_REG_G_ZYXDA;
}
void AP_InertialSensor_LSM9DS0::_read_data_transaction_a()
{
struct sensor_raw_data raw_data = { };
const uint8_t reg = OUT_X_L_A | 0xC0;
if (!_dev_accel->transfer(&reg, 1, (uint8_t *) &raw_data, sizeof(raw_data))) {
hal.console->printf("LSM9DS0: error reading accelerometer\n");
return;
}
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, AP_HAL::micros64());
}
/*
* read from the data registers and update filtered data
*/
void AP_InertialSensor_LSM9DS0::_read_data_transaction_g()
{
struct sensor_raw_data raw_data = { };
const uint8_t reg = OUT_X_L_G | 0xC0;
if (!_dev_gyro->transfer(&reg, 1, (uint8_t *) &raw_data, sizeof(raw_data))) {
hal.console->printf("LSM9DS0: error reading gyroscope\n");
return;
}
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, AP_HAL::micros64());
}
bool AP_InertialSensor_LSM9DS0::update()
{
update_gyro(_gyro_instance);
update_accel(_accel_instance);
return true;
}
#if LSM9DS0_DEBUG
/* dump all config registers - used for debug */
void AP_InertialSensor_LSM9DS0::_dump_registers(void)
{
hal.console->printf("LSM9DS0 registers:\n");
hal.console->printf("Gyroscope registers:\n");
const uint8_t first = OUT_TEMP_L_XM;
const uint8_t last = ACT_DUR;
for (uint8_t reg=first; reg<=last; reg++) {
uint8_t v = _register_read_g(reg);
hal.console->printf("%02x:%02x ", (unsigned)reg, (unsigned)v);
if ((reg - (first-1)) % 16 == 0) {
hal.console->printf("\n");
}
}
hal.console->printf("\n");
hal.console->printf("Accelerometer and Magnetometers registers:\n");
for (uint8_t reg=first; reg<=last; reg++) {
uint8_t v = _register_read_xm(reg);
hal.console->printf("%02x:%02x ", (unsigned)reg, (unsigned)v);
if ((reg - (first-1)) % 16 == 0) {
hal.console->printf("\n");
}
}
hal.console->printf("\n");
}
#endif
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