File content as of revision 0:f1a10797d9f6:

/*
 * Mbed Application program
 *  Nano 33 BLE Sense board runs on mbed-OS5
 *  LSM9DS1 -> iNEMO inertial module:
 *    3D accelerometer, 3D gyroscope, 3D magnetometer
 *      by STMicroelectronics
 *
 * Copyright (c) 2020 Kenji Arai / JH1PJL
 *      http://www7b.biglobe.ne.jp/~kenjia/
 *      https://os.mbed.com/users/kenjiArai/
 *      Started:    January   22nd, 2020
 *      Revised:    Feburary   5th, 2020
 */

//  Pre-selection --------------------------------------------------------------
#include    "select_example.h"
//#define EXAMPLE_2_CHECK_LSM9DS1
#ifdef EXAMPLE_2_CHECK_LSM9DS1

//  Include --------------------------------------------------------------------
#include    "mbed.h"
#include    "nano33blesense_iodef.h"
#include    "LSM9DS1.h"

//  Definition -----------------------------------------------------------------

//  Constructor ----------------------------------------------------------------
RawSerial       pc(STDIO_UART_TX, STDIO_UART_RX, 115200);
DigitalOut      sen_pwr(PIN_VDD_ENV, 1);
DigitalOut      i2c_pullup(PIN_I2C_PULLUP, 1);
I2C             i2c(PIN_SDA1, PIN_SCL1);
LSM9DS1         *imu = NULL;
Timer           t;

//  RAM ------------------------------------------------------------------------

//  ROM / Constant data --------------------------------------------------------

//  Function prototypes --------------------------------------------------------
extern void check_i2c_connected_devices(void);

//------------------------------------------------------------------------------
//  Control Program
//------------------------------------------------------------------------------
int main()
{
    i2c_pullup = 1;
    sen_pwr = 1;
    pc.printf("\r\nCheck LSM9DS1\r\n");
    thread_sleep_for(200);
    check_i2c_connected_devices();
    imu = new LSM9DS1(PIN_SDA1, PIN_SCL1);
    uint16_t reg = imu->begin();
    pc.printf("IMU(LSM9DS1) 0x%x\r\n", reg);
    imu->calibration();
    //  check I2C line
    check_i2c_connected_devices();
    if (reg == 0x683d){
        pc.printf("ACC+GYR+MAG are ready!\r\n");
    } else {
        pc.printf("ACC+GYR+MAG are NOT ready!\r\n");
    }
    uint32_t n = 0;
    while(true) {
        t.reset();
        t.start();
        imu->readAccel();
        imu->readGyro();
        imu->readMag();
        imu->readTemp();
        pc.printf("acc = %+5.3f, %+5.3f, %+5.3f, ", imu->ax, imu->ay, imu->az);
        pc.printf("gyr = %+8.3f, %+8.3f, %+8.3f, ", imu->gx, imu->gy, imu->gz);
        pc.printf("mag = %+5.3f, %+5.3f, %+5.3f, ", imu->mx, imu->my, imu->mz);
        pc.printf("temperature = %+5.1f, ", imu->temperature_c);
        ++n;
        uint32_t passed_time = t.read_ms();
        pc.printf("processing time: %d [ms], count: %4d\r\n", passed_time, n);
        if (passed_time < 199){
            thread_sleep_for(200 - t.read_ms());
        }
    }
}

#endif // EXAMPLE_2_CHECK_LSM9DS1