INT2 cannot be used for any motion of BMI 270, but INT1 can be used.

[hjj]

Hello everyone, I have a problem that has troubled me for a long time.I hope I can get your help.

I use BMI 2_ INT1 can be mapped to the external interrupt INT1 of MCU, but BMI2 is used_ INT1 cannot be mapped to external interrupt INT2.

My code is as follows

int any_motion_interrupt(void)
{
/* Status of api are returned to this variable. */
int8_t rslt;

/* Accel sensor and any-motion feature are listed in array. */
uint8_t sens_list[2] = { BMI2_ACCEL, BMI2_ANY_MOTION };
struct bmi2_int_pin_config int_cfg;
/* Variable to get any-motion interrupt status. */
uint16_t int_status = 0;

/* Sensor initialization configuration. */
struct bmi2_dev bmi2_dev;

/* Select features and their pins to be mapped to. */
struct bmi2_sens_int_config sens_int = { .type = BMI2_ANY_MOTION, .hw_int_pin = BMI2_INT2 };

/* Interface reference is given as a parameter
* For I2C : BMI2_I2C_INTF
* For SPI : BMI2_SPI_INTF
*/
rslt = bmi2_interface_init(&bmi2_dev, BMI2_SPI_INTF);
bmi2_error_codes_print_result(rslt);

/* Initialize bmi270. */
rslt = bmi270_init(&bmi2_dev);
bmi2_error_codes_print_result(rslt);

if (rslt == BMI2_OK)
{
/* Enable the selected sensors. */
rslt = bmi270_sensor_enable(sens_list, 2, &bmi2_dev);
bmi2_error_codes_print_result(rslt);

bmi2_get_int_pin_config(&int_cfg, &bmi2_dev);

int_cfg.pin_type = BMI2_INT2;
int_cfg.pin_cfg[0].lvl = BMI2_INT_ACTIVE_HIGH;/*Config INT2 rising edge trigging*/
int_cfg.pin_cfg[0].od = BMI2_INT_PUSH_PULL;
int_cfg.pin_cfg[0].output_en= BMI2_INT_OUTPUT_ENABLE;

bmi2_set_int_pin_config(&int_cfg, &bmi2_dev);
bmi2_error_codes_print_result(rslt);

if (rslt == BMI2_OK)
{
/* Set feature configurations for any-motion. */
rslt = set_feature_config(&bmi2_dev);
bmi2_error_codes_print_result(rslt);

if (rslt == BMI2_OK)
{
/* Map the feature interrupt for any-motion. */
rslt = bmi270_map_feat_int(&sens_int, 1, &bmi2_dev);
bmi2_error_codes_print_result(rslt);
printf("Move the board\n");

/* Loop to get any-motion interrupt. */
do
{
/* Clear buffer. */
int_status = 0;

/* To get the interrupt status of any-motion. */
rslt = bmi2_get_int_status(&int_status, &bmi2_dev);
bmi2_error_codes_print_result(rslt);

/* To check the interrupt status of any-motion. */
if (int_status & BMI270_ANY_MOT_STATUS_MASK)
{
printf("Any-motion interrupt is generated\n");
break;
}
} while (rslt == BMI2_OK);
}
}
}

return rslt;
}

[BSTRobin · Accepted solution]

Hi hjj,

You should modify your code like this, then INT2 pin can be sent out interrupt signal.

int_cfg.pin_type = BMI2_INT2;
int_cfg.pin_cfg[1].lvl = BMI2_INT_ACTIVE_HIGH;/*Config INT2 rising edge trigging*/
int_cfg.pin_cfg[1].od = BMI2_INT_PUSH_PULL;
int_cfg.pin_cfg[1].output_en= BMI2_INT_OUTPUT_ENABLE;

[BSTRobin]

Hi hjj,

Did it work well on your side?