Health Server

The Health Server model provides attention callbacks and node diagnostics for Health Client models. It is primarily used to report faults in the mesh node and map the mesh nodes to their physical location.

If present, the Health Server model must be instantiated on the primary element.

Faults

The Health Server model may report a list of faults that have occurred in the device’s lifetime. Typically, the faults are events or conditions that may alter the behavior of the node, like power outages or faulty peripherals. Faults are split into warnings and errors. Warnings indicate conditions that are close to the limits of what the node is designed to withstand, but not necessarily damaging to the device. Errors indicate conditions that are outside of the node’s design limits, and may have caused invalid behavior or permanent damage to the device.

Fault values 0x01 to 0x7f are reserved for the Bluetooth Mesh specification, and the full list of specification defined faults are available in Health faults. Fault values 0x80 to 0xff are vendor specific. The list of faults are always reported with a company ID to help interpreting the vendor specific faults.

Attention state

The attention state is used to make the device call attention to itself through some physical behavior like blinking, playing a sound or vibrating. The attention state may be used during provisioning to let the user know which device they’re provisioning, as well as through the Health models at runtime.

The attention state is always assigned a timeout in the range of one to 255 seconds when enabled. The Health Server API provides two callbacks for the application to run their attention calling behavior: bt_mesh_health_srv_cb.attn_on is called at the beginning of the attention period, bt_mesh_health_srv_cb.attn_off is called at the end.

The remaining time for the attention period may be queried through bt_mesh_health_srv.attn_timer.

API reference

group bt_mesh_health_srv

Health Server Model.

Defines

BT_MESH_HEALTH_PUB_DEFINE(_name, _max_faults)

A helper to define a health publication context.

Parameters:

_name – Name given to the publication context variable.
_max_faults – Maximum number of faults the element can have.

BT_MESH_MODEL_HEALTH_SRV(srv, pub, ...)

Define a new health server model.

Note that this API needs to be repeated for each element that the application wants to have a health server model on. Each instance also needs a unique bt_mesh_health_srv and bt_mesh_model_pub context.

Parameters:

srv – Pointer to a unique struct bt_mesh_health_srv.
pub – Pointer to a unique struct bt_mesh_model_pub.
... – Optional Health Server metadata if application is compiled with Large Composition Data Server support, otherwise this parameter is ignored.

Returns:

New mesh model instance.

BT_MESH_HEALTH_TEST_INFO_METADATA_ID: Health Test Information Metadata ID.

BT_MESH_HEALTH_TEST_INFO_METADATA(tests)

BT_MESH_HEALTH_TEST_INFO(cid, tests...)

Define a Health Test Info Metadata array.

Parameters:

cid – Company ID of the Health Test suite.
tests – A comma separated list of tests.

Returns:

A comma separated list of values that make Health Test Info Metadata

Functions

int bt_mesh_health_srv_fault_update(const struct bt_mesh_elem *elem)

Notify the stack that the fault array state of the given element has changed.

This prompts the Health server on this element to publish the current fault array if periodic publishing is disabled.

Parameters:

elem – Element to update the fault state of.

Returns:

0 on success, or (negative) error code otherwise.

struct bt_mesh_health_srv_cb

#include <health_srv.h>

Callback function for the Health Server model.

Public Members

int (*fault_get_cur)(const struct bt_mesh_model *model, uint8_t *test_id, uint16_t *company_id, uint8_t *faults, uint8_t *fault_count)

Callback for fetching current faults.

Fault values may either be defined by the specification, or by a vendor. Vendor specific faults should be interpreted in the context of the accompanying Company ID. Specification defined faults may be reported for any Company ID, and the same fault may be presented for multiple Company IDs.

All faults shall be associated with at least one Company ID, representing the device vendor or some other vendor whose vendor specific fault values are used.

If there are multiple Company IDs that have active faults, return only the faults associated with one of them at the time. To report faults for multiple Company IDs, interleave which Company ID is reported for each call.

Param model:: Health Server model instance to get faults of.
Param test_id:: Test ID response buffer.
Param company_id:: Company ID response buffer.
Param faults:: Array to fill with current faults.
Param fault_count:: The number of faults the fault array can fit. Should be updated to reflect the number of faults copied into the array.
Return:: 0 on success, or (negative) error code otherwise.

int (*fault_get_reg)(const struct bt_mesh_model *model, uint16_t company_id, uint8_t *test_id, uint8_t *faults, uint8_t *fault_count)

Callback for fetching all registered faults.

Registered faults are all past and current faults since the last call to fault_clear. Only faults associated with the given Company ID should be reported.

Fault values may either be defined by the specification, or by a vendor. Vendor specific faults should be interpreted in the context of the accompanying Company ID. Specification defined faults may be reported for any Company ID, and the same fault may be presented for multiple Company IDs.

Param model:: Health Server model instance to get faults of.
Param company_id:: Company ID to get faults for.
Param test_id:: Test ID response buffer.
Param faults:: Array to fill with registered faults.
Param fault_count:: The number of faults the fault array can fit. Should be updated to reflect the number of faults copied into the array.
Return:: 0 on success, or (negative) error code otherwise.

int (*fault_clear)(const struct bt_mesh_model *model, uint16_t company_id)

Clear all registered faults associated with the given Company ID.

Param model:: Health Server model instance to clear faults of.
Param company_id:: Company ID to clear faults for.
Return:: 0 on success, or (negative) error code otherwise.

int (*fault_test)(const struct bt_mesh_model *model, uint8_t test_id, uint16_t company_id)

Run a self-test.

The Health server may support up to 256 self-tests for each Company ID. The behavior for all test IDs are vendor specific, and should be interpreted based on the accompanying Company ID. Test failures should result in changes to the fault array.

Param model:: Health Server model instance to run test for.
Param test_id:: Test ID to run.
Param company_id:: Company ID to run test for.
Return:: 0 if the test execution was started successfully, or (negative) error code otherwise. Note that the fault array will not be reported back to the client if the test execution didn’t start.

void (*attn_on)(const struct bt_mesh_model *model)

Start calling attention to the device.

The attention state is used to map an element address to a physical device. When this callback is called, the device should start some physical procedure meant to call attention to itself, like blinking, buzzing, vibrating or moving. If there are multiple Health server instances on the device, the attention state should also help identify the specific element the server is in.

The attention calling behavior should continue until the attn_off callback is called.

Param model:: Health Server model to start the attention state of.

void (*attn_off)(const struct bt_mesh_model *model)

Stop the attention state.

Any physical activity started to call attention to the device should be stopped.

Param model:

struct bt_mesh_health_srv

#include <health_srv.h>

Mesh Health Server Model Context.

Public Members

const struct bt_mesh_model *model: Composition data model entry pointer.

const struct bt_mesh_health_srv_cb *cb: Optional callback struct.

struct k_work_delayable attn_timer: Attention Timer state.

Health faults

Fault values defined by the Bluetooth Mesh specification.

group bt_mesh_health_faults

List of specification defined Health fault values.

Defines

BT_MESH_HEALTH_FAULT_NO_FAULT: No fault has occurred.

BT_MESH_HEALTH_FAULT_BATTERY_LOW_WARNING

BT_MESH_HEALTH_FAULT_BATTERY_LOW_ERROR

BT_MESH_HEALTH_FAULT_SUPPLY_VOLTAGE_TOO_LOW_WARNING

BT_MESH_HEALTH_FAULT_SUPPLY_VOLTAGE_TOO_LOW_ERROR

BT_MESH_HEALTH_FAULT_SUPPLY_VOLTAGE_TOO_HIGH_WARNING

BT_MESH_HEALTH_FAULT_SUPPLY_VOLTAGE_TOO_HIGH_ERROR

BT_MESH_HEALTH_FAULT_POWER_SUPPLY_INTERRUPTED_WARNING

BT_MESH_HEALTH_FAULT_POWER_SUPPLY_INTERRUPTED_ERROR

BT_MESH_HEALTH_FAULT_NO_LOAD_WARNING

BT_MESH_HEALTH_FAULT_NO_LOAD_ERROR

BT_MESH_HEALTH_FAULT_OVERLOAD_WARNING

BT_MESH_HEALTH_FAULT_OVERLOAD_ERROR

BT_MESH_HEALTH_FAULT_OVERHEAT_WARNING

BT_MESH_HEALTH_FAULT_OVERHEAT_ERROR

BT_MESH_HEALTH_FAULT_CONDENSATION_WARNING

BT_MESH_HEALTH_FAULT_CONDENSATION_ERROR

BT_MESH_HEALTH_FAULT_VIBRATION_WARNING

BT_MESH_HEALTH_FAULT_VIBRATION_ERROR

BT_MESH_HEALTH_FAULT_CONFIGURATION_WARNING

BT_MESH_HEALTH_FAULT_CONFIGURATION_ERROR

BT_MESH_HEALTH_FAULT_ELEMENT_NOT_CALIBRATED_WARNING

BT_MESH_HEALTH_FAULT_ELEMENT_NOT_CALIBRATED_ERROR

BT_MESH_HEALTH_FAULT_MEMORY_WARNING

BT_MESH_HEALTH_FAULT_MEMORY_ERROR

BT_MESH_HEALTH_FAULT_SELF_TEST_WARNING

BT_MESH_HEALTH_FAULT_SELF_TEST_ERROR

BT_MESH_HEALTH_FAULT_INPUT_TOO_LOW_WARNING

BT_MESH_HEALTH_FAULT_INPUT_TOO_LOW_ERROR

BT_MESH_HEALTH_FAULT_INPUT_TOO_HIGH_WARNING

BT_MESH_HEALTH_FAULT_INPUT_TOO_HIGH_ERROR

BT_MESH_HEALTH_FAULT_INPUT_NO_CHANGE_WARNING

BT_MESH_HEALTH_FAULT_INPUT_NO_CHANGE_ERROR

BT_MESH_HEALTH_FAULT_ACTUATOR_BLOCKED_WARNING

BT_MESH_HEALTH_FAULT_ACTUATOR_BLOCKED_ERROR

BT_MESH_HEALTH_FAULT_HOUSING_OPENED_WARNING

BT_MESH_HEALTH_FAULT_HOUSING_OPENED_ERROR

BT_MESH_HEALTH_FAULT_TAMPER_WARNING

BT_MESH_HEALTH_FAULT_TAMPER_ERROR

BT_MESH_HEALTH_FAULT_DEVICE_MOVED_WARNING

BT_MESH_HEALTH_FAULT_DEVICE_MOVED_ERROR

BT_MESH_HEALTH_FAULT_DEVICE_DROPPED_WARNING

BT_MESH_HEALTH_FAULT_DEVICE_DROPPED_ERROR

BT_MESH_HEALTH_FAULT_OVERFLOW_WARNING

BT_MESH_HEALTH_FAULT_OVERFLOW_ERROR

BT_MESH_HEALTH_FAULT_EMPTY_WARNING

BT_MESH_HEALTH_FAULT_EMPTY_ERROR

BT_MESH_HEALTH_FAULT_INTERNAL_BUS_WARNING

BT_MESH_HEALTH_FAULT_INTERNAL_BUS_ERROR

BT_MESH_HEALTH_FAULT_MECHANISM_JAMMED_WARNING

BT_MESH_HEALTH_FAULT_MECHANISM_JAMMED_ERROR

BT_MESH_HEALTH_FAULT_VENDOR_SPECIFIC_START

Start of the vendor specific fault values.

All values below this are reserved for the Bluetooth Specification.