BMX160 No-motion

[amar]

Hi Everyone,

Present i am working with BMX160 Sensor, Till now i am able to read Device ID and Accel, Gyro and Mag raw data.

Now my aim is to implement "NO-MOTION" interrupt,as part of it i configured sensor like below by taking ref from below link

https://community.bosch-sensortec.com/t5/MEMS-sensors-forum/BMI160-No-Motion-Interrupt-Duration/m-p/... 

void No_Motion_config(void)
{
	  struct bmi160_int_settg int_config;

		// Configure interrupt
    int_config.int_channel = BMI160_INT_CHANNEL_2; /* Select the Interrupt channel/pin */
    int_config.int_type = BMI160_ACC_SLOW_NO_MOTION_INT; /* Select the Interrupt type */
		
		/* Select the interrupt channel/pin settings */
    int_config.int_pin_settg.output_en = BMI160_ENABLE;
    int_config.int_pin_settg.output_mode = BMI160_DISABLE;
    int_config.int_pin_settg.output_type = BMI160_DISABLE;
    int_config.int_pin_settg.edge_ctrl = BMI160_ENABLE;
    int_config.int_pin_settg.input_en = BMI160_DISABLE;
    int_config.int_pin_settg.latch_dur = BMI160_LATCH_DUR_NONE;
	
    /* Select the Any-motion interrupt parameters */
    int_config.int_type_cfg.acc_no_motion_int.no_motion_sel = BMI160_ENABLE;
    int_config.int_type_cfg.acc_no_motion_int.no_motion_x = BMI160_ENABLE;
    int_config.int_type_cfg.acc_no_motion_int.no_motion_y = BMI160_ENABLE;
    int_config.int_type_cfg.acc_no_motion_int.no_motion_z  = BMI160_ENABLE;
	  int_config.int_type_cfg.acc_no_motion_int.no_motion_src=1; 
    int_config.int_type_cfg.acc_no_motion_int.no_motion_dur = 40;  
    int_config.int_type_cfg.acc_no_motion_int.no_motion_thres = 20;  
		

		/* Set the Any-motion interrupt */
		rslt = bmi160_set_int_config(&int_config, &bmi); /* sensor is an instance of the structure bmi160_dev  */	
}

1) After completion of IMU Configuration, i kept IMU  flat surface(Table ) for morethan 10 Mints but i did not get "no motion" Interrupt.

2)  But when i read INT_STATUS[1](0x1D) Reg by moving IMU,then i am getting "no motion" innterrupt  bit is High.

3) If i kept IMU at Rest position on Table then  INT_STATUS[1](0x1D) Reg  "no motion" innterrupt  bit become  Low.

4) Am doing wrong Testing procedure for this? or Any thing missing in IMU Configuration?

5) I am confusing to undersatnd this concept of "no-motion", Can you please provide me any Testing Procedures PDF or Weblinks for this to overcome it.

Thank you in advance

Amarr

[amar]

Hi,

Please give me reply.

Thank you.

amarr

[BSTRobin · Accepted solution]

Hello amar,

The duration time is too big if you set it as value 40. You could set it to default value and test it again.
int_config.int_type_cfg.acc_no_motion_int.no_motion_dur = 40;