Environment Sensing - Sound Level GATT Service#

Provides microphone sound level data in GATT characteristics. Designed for the Thunderboard smartphone app.

Functions#

void
sl_gatt_service_sound_on_event(sl_bt_msg_t *evt)
sl_status_t
sl_gatt_service_sound_get(float *sound_level)

Macros#

#define
SL_GATT_SERVICE_SOUND_INVALID 0x7FFF

Function Documentation#

sl_gatt_service_sound_on_event#

void sl_gatt_service_sound_on_event (sl_bt_msg_t * evt)
Parameters
TypeDirectionArgument NameDescription
sl_bt_msg_t *[in]evt

Event coming from the Bluetooth stack.

Bluetooth stack event handler.


sl_gatt_service_sound_get#

sl_status_t sl_gatt_service_sound_get (float * sound_level)
Parameters
TypeDirectionArgument NameDescription
float *[out]sound_level

Sound pressure level (in dB).

Getter for Sound Level characteristic value. Returns

  • Status of the operation.

Note

  • To be implemented in user code.