LSM6DSV16B.cpp

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//Driver for LSM6DSV16B, LSM6DSV16BX gyroscope/accelometer

#include "LSM6DSV16B.h"

//returns negative error code, positive warning code, or 0 on success
int LSM6DSV16B::begin(SensorDevice* dev) { 
    this->dev = dev;
    dev->setLowSpeed(); // Use low speed for setup

    // Check who-am-i
    if (!detect(dev)) return -1;

    // Perform a software reset
    dev->writeReg(0x12, 0x01); //CTRL3, SW_RESET

    // Wait for the device to be ready
    while (dev->readReg(0x12) & 0x01) {} //CTRL3, SW_RESET

    // Autoincrement register address when doing block SPI reads and update continuously
    dev->writeReg(0x12, 0x44);  //BDU bit need to be set - CTRL3, IF_INC | BDU

    // Acc 16G sensitivity, LPF1 ODR/2, LPF2 ODR/4 (in high-performance mode)
    dev->writeReg(0x17, 0x03); //CTRL8, FS_XL, HP_LPF2_XL_BW

    // Enable acc LPF2 filter
    dev->writeReg(0x16, 0x08); //CTRL9, LPF2_XL_EN

    // Gyro 2000 deg/s sensitivity, LPF1 240Hz (@960kHz ODR)
    dev->writeReg(0x15, 0x04); //CTRL6, FS_G, LPF1_G_BW

    // Enable gyro LPF1 filter
    dev->writeReg(0x16, 0x01); //CTRL7, LPF1_G_EN

    // Acc ODR 960Hz in high-performance mode
    dev->writeReg(0x10, 0x09); //CTRL1, OP_MODE_XL, ODR_XL

    // Gyro ODR 960Hz in high-performance mode
    dev->writeReg(0x11, 0x09); //CTRL2, OP_MODE_G, ODR_G

    // Generate pulse on interrupt line, not requiring a read to clear
    dev->writeReg(0x13, 0x02); //CTRL4, DRDY_PULSED

    // Enable the INT1 output to interrupt when new gyro data is ready
    dev->writeReg(0x0D, 0x02); //INT1_CTRL, INT1_DRDY_G

    // Set full speed
    dev->setFreq(10000000); //10MHz

    return 0;
}

void LSM6DSV16B::readraw(int16_t *raw) {
  dev->readRegs(0x22, (uint8_t*)raw, 12); //LSM6DSV_OUTX_L_G - gx,gy,gz,az,ay,ax little endian, no byte juggling needed for RP2,ESP32,STM32
}