sd_ble_gatts_value_set

[hong]

when I call sd_ble_gatts_value_set, "HardFault_Handler" occurs.I don't understand why.

static void lock_update_value(ble_lbs_t * p_lbs, uint8_t *state) { uint16_t len = sizeof(uint8_t);

 sd_ble_gatts_value_set(p_lbs->lock_char_handles.value_handle,
	                                  0,
	                                  &len,
	                                  state);

}

[run_ar]

Do you check what error code is returned from the sd command? And is this controlled in APP_ERROR_CHECK?