Save_configuration() fail

Hi!
I met a problem about save_configuration() recently,would you please help me give some suggestion.The details are as follows:

odrv0.axis0.motor.config.pole_pairs = 15
odrv0.axis0.motor.config.resistance_calib_max_voltage = 4
odrv0.axis0.motor.config.requested_current_range = 25
odrv0.axis0.motor.config.current_control_bandwidth = 100
odrv0.axis0.motor.config.torque_constant = 8.27
odrv0.axis0.encoder.config.mode = ENCODER_MODE_HALL
odrv0.axis0.encoder.config.cpr = 90
odrv0.axis0.encoder.config.bandwidth = 100
odrv0.axis0.controller.config.pos_gain = 1
odrv0.axis0.controller.config.vel_gain = 0.02 * odrv0.axis0.motor.config.torque_constant * odrv0.axis0.encoder.config.cpr
odrv0.axis0.controller.config.vel_integrator_gain = 0.1 * odrv0.axis0.motor.config.torque_constant * odrv0.axis0.encoder.config.cpr
odrv0.axis0.controller.config.vel_limit = 10
odrv0.axis0.controller.config.control_mode = CONTROL_MODE_VELOCITY_CONTROL

odrv0.save_configuration()
odrv0.reboot()

odrv0.axis0.requested_state = AXIS_STATE_MOTOR_CALIBRATION
odrv0.axis0.motor
odrv0.axis0.motor.config.pre_calibrated = True

odrv0.axis0.requested_state = AXIS_STATE_ENCODER_OFFSET_CALIBRATION
odrv0.axis0.encoder
odrv0.axis0.encoder.config.pre_calibrated = True

All of the above steps are performed OK,motor calibration and encoder calibration successful.

odrv0.save_configuration()
odrv0.reboot()

When i save configuration as above and reboot, All parameters are restored by default.
Is there any problem with my setting?
Thanks for your browsing!!!

Hi Zhang,

This is quite curious. Is it still occurring?

Yes´╝îI just change default value in code,and my motor work normally,but the problem is still unresolved!