About potter1234

Hi all, I encountered a strange issue in BMI160 with nordic 52840 mcu. (on a customed board) The situation looks like this: 1.The mcu has no problem receving irq like STEP_DETECT_INT, DOUBLE_TAP_INT, and the register values of 0x1C-0x1F are correctly displayed. 2. However, when I try to set irqs like LOW_G_INT, HiGH_G_INT, SLOW_NO_MOTION_INT, I can see irqs arriving in my interrupt handler, but the register values of 0x1C-0x1F are always zero. This can be quite problematic, since I have no clue which interrups are triggered. for setting low-g interrupt, my code looks like this struct bmi160_int_settg int_config; /* Select the Interrupt channel/pin */ int_config.int_channel = BMI160_INT_CHANNEL_1;// Interrupt channel/pin 1 /* Select the Interrupt type */ int_config.int_type = BMI160_ACC_LOW_G_INT;// Choosing LOW G/fall detection interrupt /* Select the interrupt channel/pin settings */ int_config.int_pin_settg.output_en = BMI160_ENABLE;// Enabling interrupt pins to act as output pin int_config.int_pin_settg.output_mode = BMI160_DISABLE;// Choosing push-pull mode for interrupt pin int_config.int_pin_settg.output_type = BMI160_DISABLE;// Choosing active low output int_config.int_pin_settg.edge_ctrl = BMI160_ENABLE;// Choosing edge triggered output int_config.int_pin_settg.input_en = BMI160_DISABLE;// Disabling interrupt pin to act as input int_config.int_pin_settg.latch_dur = BMI160_LATCH_DUR_NONE;// non-latched output int_config.int_type_cfg.acc_low_g_int.low_data_src=BMI160_ENABLE;// int_config.int_type_cfg.acc_low_g_int.low_en = BMI160_ENABLE;// int_config.int_type_cfg.acc_low_g_int.low_mode = BMI160_ENABLE;// int_config.int_type_cfg.acc_low_g_int.low_hyst = BMI160_ENABLE;// int_config.int_type_cfg.acc_low_g_int.low_dur = low_dur; // [ms] ((n+1) * 2.5) PREV=50 int_config.int_type_cfg.acc_low_g_int.low_thres = low_thres; // [mg] (n * 7.81) PREV=96 bmi160_set_int_config(&int_config, &sensor); /* sensor is an instance of the structure bmi160_dev */ fall_detected = false; I'm pretty sure I followed every guideline from here https://github.com/BoschSensortec/BMI160_driver What could possibly be wrong here?  Is it possible that it has something to do with HW schematic? Any feedback will be appreciated. Thank you! ... View more