driver_mpu6050_read_test.c

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#include "driver_mpu6050_read_test.h"
 
static mpu6050_handle_t gs_handle;        

uint8_t mpu6050_read_test(mpu6050_address_t addr, uint32_t times)
{
    uint8_t res;
    uint32_t i;
    mpu6050_info_t info;
    
    /* link interface function */
    DRIVER_MPU6050_LINK_INIT(&gs_handle, mpu6050_handle_t);
    DRIVER_MPU6050_LINK_IIC_INIT(&gs_handle, mpu6050_interface_iic_init);
    DRIVER_MPU6050_LINK_IIC_DEINIT(&gs_handle, mpu6050_interface_iic_deinit);
    DRIVER_MPU6050_LINK_IIC_READ(&gs_handle, mpu6050_interface_iic_read);
    DRIVER_MPU6050_LINK_IIC_WRITE(&gs_handle, mpu6050_interface_iic_write);
    DRIVER_MPU6050_LINK_DELAY_MS(&gs_handle, mpu6050_interface_delay_ms);
    DRIVER_MPU6050_LINK_DEBUG_PRINT(&gs_handle, mpu6050_interface_debug_print);
    DRIVER_MPU6050_LINK_RECEIVE_CALLBACK(&gs_handle, mpu6050_interface_receive_callback);
    
    /* get information */
    res = mpu6050_info(&info);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: get info failed.\n");
       
        return 1;
    }
    else
    {
        /* print chip info */
        mpu6050_interface_debug_print("mpu6050: chip is %s.\n", info.chip_name);
        mpu6050_interface_debug_print("mpu6050: manufacturer is %s.\n", info.manufacturer_name);
        mpu6050_interface_debug_print("mpu6050: interface is %s.\n", info.interface);
        mpu6050_interface_debug_print("mpu6050: driver version is %d.%d.\n", info.driver_version / 1000, (info.driver_version % 1000) / 100);
        mpu6050_interface_debug_print("mpu6050: min supply voltage is %0.1fV.\n", info.supply_voltage_min_v);
        mpu6050_interface_debug_print("mpu6050: max supply voltage is %0.1fV.\n", info.supply_voltage_max_v);
        mpu6050_interface_debug_print("mpu6050: max current is %0.2fmA.\n", info.max_current_ma);
        mpu6050_interface_debug_print("mpu6050: max temperature is %0.1fC.\n", info.temperature_max);
        mpu6050_interface_debug_print("mpu6050: min temperature is %0.1fC.\n", info.temperature_min);
    }
    
    /* start read test */
    mpu6050_interface_debug_print("mpu6050: start read test.\n");
    
    /* set the addr pin */
    res = mpu6050_set_addr_pin(&gs_handle, addr);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set addr pin failed.\n");
       
        return 1;
    }
    
    /* init */
    res = mpu6050_init(&gs_handle);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: init failed.\n");
       
        return 1;
    }
    
    /* delay 100 ms */
    mpu6050_interface_delay_ms(100);
    
    /* disable sleep */
    res = mpu6050_set_sleep(&gs_handle, MPU6050_BOOL_FALSE);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set sleep failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* set pll x */
    res = mpu6050_set_clock_source(&gs_handle, MPU6050_CLOCK_SOURCE_PLL_X_GYRO);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set clock source failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* set 50Hz */
    res = mpu6050_set_sample_rate_divider(&gs_handle, (1000 / 50) - 1);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set sample rate divider failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* set low pass filter 3 */
    res = mpu6050_set_low_pass_filter(&gs_handle, MPU6050_LOW_PASS_FILTER_3);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set low pass filter failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* enable temperature sensor */
    res = mpu6050_set_temperature_sensor(&gs_handle, MPU6050_BOOL_TRUE);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set temperature sensor failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* disable cycle wake up */
    res = mpu6050_set_cycle_wake_up(&gs_handle, MPU6050_BOOL_FALSE);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set cycle wake up failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* set wake up frequency 1.25Hz */
    res = mpu6050_set_wake_up_frequency(&gs_handle, MPU6050_WAKE_UP_FREQUENCY_1P25_HZ);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set wake up frequency failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* enable acc x */
    res = mpu6050_set_standby_mode(&gs_handle, MPU6050_SOURCE_ACC_X, MPU6050_BOOL_FALSE);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set standby mode failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* enable acc y */
    res = mpu6050_set_standby_mode(&gs_handle, MPU6050_SOURCE_ACC_Y, MPU6050_BOOL_FALSE);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set standby mode failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* enable acc z */
    res = mpu6050_set_standby_mode(&gs_handle, MPU6050_SOURCE_ACC_Z, MPU6050_BOOL_FALSE);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set standby mode failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* enable gyro x */
    res = mpu6050_set_standby_mode(&gs_handle, MPU6050_SOURCE_GYRO_X, MPU6050_BOOL_FALSE);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set standby mode failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* enable gyro y */
    res = mpu6050_set_standby_mode(&gs_handle, MPU6050_SOURCE_GYRO_Y, MPU6050_BOOL_FALSE);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set standby mode failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* enable gyro z */
    res = mpu6050_set_standby_mode(&gs_handle, MPU6050_SOURCE_GYRO_Z, MPU6050_BOOL_FALSE);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set standby mode failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* disable gyroscope x test */
    res = mpu6050_set_gyroscope_test(&gs_handle, MPU6050_AXIS_X, MPU6050_BOOL_FALSE);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set gyroscope test failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* disable gyroscope y test */
    res = mpu6050_set_gyroscope_test(&gs_handle, MPU6050_AXIS_Y, MPU6050_BOOL_FALSE);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set gyroscope test failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* disable gyroscope z test */
    res = mpu6050_set_gyroscope_test(&gs_handle, MPU6050_AXIS_Z, MPU6050_BOOL_FALSE);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set gyroscope test failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* disable accelerometer x test */
    res = mpu6050_set_accelerometer_test(&gs_handle, MPU6050_AXIS_X, MPU6050_BOOL_FALSE);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set accelerometer test failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* disable accelerometer y test */
    res = mpu6050_set_accelerometer_test(&gs_handle, MPU6050_AXIS_Y, MPU6050_BOOL_FALSE);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set accelerometer test failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* disable accelerometer z test */
    res = mpu6050_set_accelerometer_test(&gs_handle, MPU6050_AXIS_Z, MPU6050_BOOL_FALSE);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set accelerometer test failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* disable fifo */
    res = mpu6050_set_fifo(&gs_handle, MPU6050_BOOL_FALSE);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set fifo failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* disable temp fifo */
    res = mpu6050_set_fifo_enable(&gs_handle, MPU6050_FIFO_TEMP, MPU6050_BOOL_FALSE);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set fifo enable failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* disable xg fifo */
    res = mpu6050_set_fifo_enable(&gs_handle, MPU6050_FIFO_XG, MPU6050_BOOL_FALSE);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set fifo enable failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* disable yg fifo */
    res = mpu6050_set_fifo_enable(&gs_handle, MPU6050_FIFO_YG, MPU6050_BOOL_FALSE);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set fifo enable failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* disable zg fifo */
    res = mpu6050_set_fifo_enable(&gs_handle, MPU6050_FIFO_ZG, MPU6050_BOOL_FALSE);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set fifo enable failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* disable accel fifo */
    res = mpu6050_set_fifo_enable(&gs_handle, MPU6050_FIFO_ACCEL, MPU6050_BOOL_FALSE);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set fifo enable failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* set interrupt level low */
    res = mpu6050_set_interrupt_level(&gs_handle, MPU6050_PIN_LEVEL_LOW);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set interrupt level failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* push pull */
    res = mpu6050_set_interrupt_pin_type(&gs_handle, MPU6050_PIN_TYPE_PUSH_PULL);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set interrupt pin type failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* disable motion */
    res = mpu6050_set_interrupt(&gs_handle, MPU6050_INTERRUPT_MOTION, MPU6050_BOOL_FALSE);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set interrupt failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* disable fifo overflow */
    res = mpu6050_set_interrupt(&gs_handle, MPU6050_INTERRUPT_FIFO_OVERFLOW, MPU6050_BOOL_FALSE);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set interrupt failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* disable dmp interrupt */
    res = mpu6050_set_interrupt(&gs_handle, MPU6050_INTERRUPT_DMP, MPU6050_BOOL_FALSE);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set interrupt failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* disable i2c master */
    res = mpu6050_set_interrupt(&gs_handle, MPU6050_INTERRUPT_I2C_MAST, MPU6050_BOOL_FALSE);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set interrupt failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* disable data ready */
    res = mpu6050_set_interrupt(&gs_handle, MPU6050_INTERRUPT_DATA_READY, MPU6050_BOOL_FALSE);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set interrupt failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* enable latch */
    res = mpu6050_set_interrupt_latch(&gs_handle, MPU6050_BOOL_TRUE);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set interrupt latch failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* enable interrupt read clear */
    res = mpu6050_set_interrupt_read_clear(&gs_handle, MPU6050_BOOL_TRUE);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set interrupt read clear failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* disable sync input */
    res = mpu6050_set_extern_sync(&gs_handle, MPU6050_EXTERN_SYNC_INPUT_DISABLED);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set extern sync failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* disable fsync interrupt */
    res = mpu6050_set_fsync_interrupt(&gs_handle, MPU6050_BOOL_FALSE);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set fsync interrupt failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* fsync interrupt level low */
    res = mpu6050_set_fsync_interrupt_level(&gs_handle, MPU6050_PIN_LEVEL_LOW);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set fsync interrupt level failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* disable iic master */
    res = mpu6050_set_iic_master(&gs_handle, MPU6050_BOOL_FALSE);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set iic master failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* disable iic bypass */
    res = mpu6050_set_iic_bypass(&gs_handle, MPU6050_BOOL_FALSE);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set iic bypass failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* ±2g */
    res = mpu6050_set_accelerometer_range(&gs_handle, MPU6050_ACCELEROMETER_RANGE_2G);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set accelerometer range failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* delay 100 ms */
    mpu6050_interface_delay_ms(100);
    
    mpu6050_interface_debug_print("mpu6050: set accelerometer range 2g.\n");
    for (i = 0; i < times; i++)
    {
        int16_t accel_raw[1][3];
        float accel_g[1][3];
        int16_t gyro_raw[1][3];
        float gyro_dps[1][3];
        uint16_t len;
        
        len = 1;
        res = mpu6050_read(&gs_handle, accel_raw, accel_g, gyro_raw, gyro_dps, &len);
        if (res != 0)
        {
            mpu6050_interface_debug_print("mpu6050: read failed.\n");
            (void)mpu6050_deinit(&gs_handle);
           
            return 1;
        }
        mpu6050_interface_debug_print("mpu6050: acc x is %0.2fg.\n", accel_g[0][0]);
        mpu6050_interface_debug_print("mpu6050: acc y is %0.2fg.\n", accel_g[0][1]);
        mpu6050_interface_debug_print("mpu6050: acc z is %0.2fg.\n", accel_g[0][2]);
        
        /* delay 1000 ms */
        mpu6050_interface_delay_ms(1000);
    }
    
    /* ±4g */
    res = mpu6050_set_accelerometer_range(&gs_handle, MPU6050_ACCELEROMETER_RANGE_4G);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set accelerometer range failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* delay 100 ms */
    mpu6050_interface_delay_ms(100);
    
    mpu6050_interface_debug_print("mpu6050: set accelerometer range 4g.\n");
    for (i = 0; i < times; i++)
    {
        int16_t accel_raw[1][3];
        float accel_g[1][3];
        int16_t gyro_raw[1][3];
        float gyro_dps[1][3];
        uint16_t len;
        
        len = 1;
        res = mpu6050_read(&gs_handle, accel_raw, accel_g, gyro_raw, gyro_dps, &len);
        if (res != 0)
        {
            mpu6050_interface_debug_print("mpu6050: read failed.\n");
            (void)mpu6050_deinit(&gs_handle);
           
            return 1;
        }
        mpu6050_interface_debug_print("mpu6050: acc x is %0.2fg.\n", accel_g[0][0]);
        mpu6050_interface_debug_print("mpu6050: acc y is %0.2fg.\n", accel_g[0][1]);
        mpu6050_interface_debug_print("mpu6050: acc z is %0.2fg.\n", accel_g[0][2]);
        
        /* delay 1000 ms */
        mpu6050_interface_delay_ms(1000);
    }
    
    /* ±8g */
    res = mpu6050_set_accelerometer_range(&gs_handle, MPU6050_ACCELEROMETER_RANGE_8G);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set accelerometer range failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* delay 100 ms */
    mpu6050_interface_delay_ms(100);
    
    mpu6050_interface_debug_print("mpu6050: set accelerometer range 8g.\n");
    for (i = 0; i < times; i++)
    {
        int16_t accel_raw[1][3];
        float accel_g[1][3];
        int16_t gyro_raw[1][3];
        float gyro_dps[1][3];
        uint16_t len;
        
        len = 1;
        res = mpu6050_read(&gs_handle, accel_raw, accel_g, gyro_raw, gyro_dps, &len);
        if (res != 0)
        {
            mpu6050_interface_debug_print("mpu6050: read failed.\n");
            (void)mpu6050_deinit(&gs_handle);
           
            return 1;
        }
        mpu6050_interface_debug_print("mpu6050: acc x is %0.2fg.\n", accel_g[0][0]);
        mpu6050_interface_debug_print("mpu6050: acc y is %0.2fg.\n", accel_g[0][1]);
        mpu6050_interface_debug_print("mpu6050: acc z is %0.2fg.\n", accel_g[0][2]);
        
        /* delay 1000 ms */
        mpu6050_interface_delay_ms(1000);
    }
    
    /* ±16g */
    res = mpu6050_set_accelerometer_range(&gs_handle, MPU6050_ACCELEROMETER_RANGE_16G);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set accelerometer range failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* delay 100 ms */
    mpu6050_interface_delay_ms(100);
    
    mpu6050_interface_debug_print("mpu6050: set accelerometer range 16g.\n");
    for (i = 0; i < times; i++)
    {
        int16_t accel_raw[1][3];
        float accel_g[1][3];
        int16_t gyro_raw[1][3];
        float gyro_dps[1][3];
        uint16_t len;
        
        len = 1;
        res = mpu6050_read(&gs_handle, accel_raw, accel_g, gyro_raw, gyro_dps, &len);
        if (res != 0)
        {
            mpu6050_interface_debug_print("mpu6050: read failed.\n");
            (void)mpu6050_deinit(&gs_handle);
           
            return 1;
        }
        mpu6050_interface_debug_print("mpu6050: acc x is %0.2fg.\n", accel_g[0][0]);
        mpu6050_interface_debug_print("mpu6050: acc y is %0.2fg.\n", accel_g[0][1]);
        mpu6050_interface_debug_print("mpu6050: acc z is %0.2fg.\n", accel_g[0][2]);
        
        /* delay 1000 ms */
        mpu6050_interface_delay_ms(1000);
    }
    
    /* ±250dps */
    res = mpu6050_set_gyroscope_range(&gs_handle, MPU6050_GYROSCOPE_RANGE_250DPS);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set gyroscope range failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* delay 100 ms */
    mpu6050_interface_delay_ms(100);
    
    mpu6050_interface_debug_print("mpu6050: set gyroscope range 250dps.\n");
    for (i = 0; i < times; i++)
    {
        int16_t accel_raw[1][3];
        float accel_g[1][3];
        int16_t gyro_raw[1][3];
        float gyro_dps[1][3];
        uint16_t len;
        
        len = 1;
        res = mpu6050_read(&gs_handle, accel_raw, accel_g, gyro_raw, gyro_dps, &len);
        if (res != 0)
        {
            mpu6050_interface_debug_print("mpu6050: read failed.\n");
            (void)mpu6050_deinit(&gs_handle);
           
            return 1;
        }
        mpu6050_interface_debug_print("mpu6050: gyro x is %0.2fdps.\n", gyro_dps[0][0]);
        mpu6050_interface_debug_print("mpu6050: gyro y is %0.2fdps.\n", gyro_dps[0][1]);
        mpu6050_interface_debug_print("mpu6050: gyro z is %0.2fdps.\n", gyro_dps[0][2]);
        
        /* delay 1000 ms */
        mpu6050_interface_delay_ms(1000);
    }
    
    /* ±500dps */
    res = mpu6050_set_gyroscope_range(&gs_handle, MPU6050_GYROSCOPE_RANGE_500DPS);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set gyroscope range failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* delay 100 ms */
    mpu6050_interface_delay_ms(100);
    
    mpu6050_interface_debug_print("mpu6050: set gyroscope range 500dps.\n");
    for (i = 0; i < times; i++)
    {
        int16_t accel_raw[1][3];
        float accel_g[1][3];
        int16_t gyro_raw[1][3];
        float gyro_dps[1][3];
        uint16_t len;
        
        len = 1;
        res = mpu6050_read(&gs_handle, accel_raw, accel_g, gyro_raw, gyro_dps, &len);
        if (res != 0)
        {
            mpu6050_interface_debug_print("mpu6050: read failed.\n");
            (void)mpu6050_deinit(&gs_handle);
           
            return 1;
        }
        mpu6050_interface_debug_print("mpu6050: gyro x is %0.2fdps.\n", gyro_dps[0][0]);
        mpu6050_interface_debug_print("mpu6050: gyro y is %0.2fdps.\n", gyro_dps[0][1]);
        mpu6050_interface_debug_print("mpu6050: gyro z is %0.2fdps.\n", gyro_dps[0][2]);
        
        /* delay 1000 ms */
        mpu6050_interface_delay_ms(1000);
    }
    
    /* ±1000dps */
    res = mpu6050_set_gyroscope_range(&gs_handle, MPU6050_GYROSCOPE_RANGE_1000DPS);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set gyroscope range failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* delay 100 ms */
    mpu6050_interface_delay_ms(100);
    
    mpu6050_interface_debug_print("mpu6050: set gyroscope range 1000dps.\n");
    for (i = 0; i < times; i++)
    {
        int16_t accel_raw[1][3];
        float accel_g[1][3];
        int16_t gyro_raw[1][3];
        float gyro_dps[1][3];
        uint16_t len;
        
        len = 1;
        res = mpu6050_read(&gs_handle, accel_raw, accel_g, gyro_raw, gyro_dps, &len);
        if (res != 0)
        {
            mpu6050_interface_debug_print("mpu6050: read failed.\n");
            (void)mpu6050_deinit(&gs_handle);
           
            return 1;
        }
        mpu6050_interface_debug_print("mpu6050: gyro x is %0.2fdps.\n", gyro_dps[0][0]);
        mpu6050_interface_debug_print("mpu6050: gyro y is %0.2fdps.\n", gyro_dps[0][1]);
        mpu6050_interface_debug_print("mpu6050: gyro z is %0.2fdps.\n", gyro_dps[0][2]);
        
        /* delay 1000 ms */
        mpu6050_interface_delay_ms(1000);
    }
    
    /* ±2000dps */
    res = mpu6050_set_gyroscope_range(&gs_handle, MPU6050_GYROSCOPE_RANGE_2000DPS);
    if (res != 0)
    {
        mpu6050_interface_debug_print("mpu6050: set gyroscope range failed.\n");
        (void)mpu6050_deinit(&gs_handle);
       
        return 1;
    }
    
    /* delay 100 ms */
    mpu6050_interface_delay_ms(100);
    
    mpu6050_interface_debug_print("mpu6050: set gyroscope range 2000dps.\n");
    for (i = 0; i < times; i++)
    {
        int16_t accel_raw[1][3];
        float accel_g[1][3];
        int16_t gyro_raw[1][3];
        float gyro_dps[1][3];
        uint16_t len;
        
        len = 1;
        res = mpu6050_read(&gs_handle, accel_raw, accel_g, gyro_raw, gyro_dps, &len);
        if (res != 0)
        {
            mpu6050_interface_debug_print("mpu6050: read failed.\n");
            (void)mpu6050_deinit(&gs_handle);
           
            return 1;
        }
        mpu6050_interface_debug_print("mpu6050: gyro x is %0.2fdps.\n", gyro_dps[0][0]);
        mpu6050_interface_debug_print("mpu6050: gyro y is %0.2fdps.\n", gyro_dps[0][1]);
        mpu6050_interface_debug_print("mpu6050: gyro z is %0.2fdps.\n", gyro_dps[0][2]);
        
        /* delay 1000 ms */
        mpu6050_interface_delay_ms(1000);
    }
    
    mpu6050_interface_debug_print("mpu6050: read temperature.\n");
    for (i = 0; i < times; i++)
    {
        int16_t raw;
        float degrees;
        
        /* read temperature */
        res = mpu6050_read_temperature(&gs_handle, &raw, &degrees);
        if (res != 0)
        {
            mpu6050_interface_debug_print("mpu6050: read temperature failed.\n");
            (void)mpu6050_deinit(&gs_handle);
           
            return 1;
        }
        mpu6050_interface_debug_print("mpu6050: temperature %0.2fC.\n", degrees);
        
        /* delay 1000 ms */
        mpu6050_interface_delay_ms(1000);
    }
    
    /* finish read test */
    mpu6050_interface_debug_print("mpu6050: finish read test.\n");
    (void)mpu6050_deinit(&gs_handle);
    
    return 0;
}