Robinson74 wrote: Sun Mar 29, 2026 12:16 pm
Kilka dalszych pytań.
4) Co oznaczają poniższe parametry odczytywane w ramach polecenia nwk-scan?
DEPTH,
0 = koordynator (bramka)
1 = urządzenie połączone bezpośrednio z bramką
2 = urządzenie połączone przez 1 router...
RX_ON_WHEN_IDLE,
Jeżeli ten parametr = 1, to znaczy, że urządzenie nasłuchuje cały czas. 0 oznacza
sleep end device, które odbiera komunikaty tylko w momencie przebudzenia.
RELATIONSHIP,
relacja = rodzic, dziecko, rodzeństwo itp.
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typedef enum {
ESP_ZB_NWK_RELATIONSHIP_PARENT = 0U, /*!< The peer device is the parent of current device. */
ESP_ZB_NWK_RELATIONSHIP_CHILD = 1U, /*!< The peer device is the child of current device. */
ESP_ZB_NWK_RELATIONSHIP_SIBLING = 2U, /*!< The peer device is the sibling of current device. */
ESP_ZB_NWK_RELATIONSHIP_NONE_OF_THE_ABOVE = 3U, /*!< The relationship is none of above, means that the peer device is
currently unknown, and its relationship with the network is in
the process of being established. */
ESP_ZB_NWK_RELATIONSHIP_PREVIOUS_CHILD = 4U, /*!< The peer device is the previous child of current device, meaning it
has been confirmed to have left the network */
ESP_ZB_NWK_RELATIONSHIP_UNAUTHENTICATED_CHILD = 5U, /*!< The peer device is the unauthenticated child of current device,
meaning it is in the process of joining the network but has not yet
been authenticated. */
OUTGOING COST,
AGE
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uint8_t outgoing_cost
The cost of an outgoing link. Got from link status.
uint8_t age
Counter value for router aging. The number of nwkLinkStatusPeriod intervals since a link status command was received.
uint32_t device_timeout
Configured end device timeout, in seconds.
uint32_t timeout_counter
Timeout value ED aging, in milliseconds.
2. Outgoing Cost & Link Status
Zigbee routers exchange Link Status messages (one-hop broadcasts) every 15–16 seconds.
How it works: When your device receives a Link Status from a neighbor, it looks for its own short address in that neighbor's "reported" list.
The Value: The Outgoing Cost is the value the neighbor has calculated for you.
Significance: If the Outgoing Cost is 0, the link is considered "one-way" (unidirectional). A valid bidirectional link must have a non-zero outgoing cost to be used for routing.
3. Age & Stale Entries
The Age field is the primary mechanism for cleaning the table of dead or moved routers.
Increment: In ZBOSS, the age is typically incremented every 15 or 16 seconds.
Reset: Every time a Link Status message or a network frame is received from that neighbor, the Age is reset to 0 (or a "fresh" value like 3, depending on the specific ZBOSS version/profile).
Stale Limit: Once the Age exceeds a threshold (typically 3 to 6), the entry is marked as "stale."
Note: If a neighbor is a parent or a critical child, the stack may attempt to keep it longer, but for general routers, it will be evicted to make room for active neighbors.
4. Device Timeout & Timeout Counter (End Device Aging)
This specifically applies to End Device children. Unlike routers, End Devices don't send Link Status messages; they use "Keep Alives" (MAC Data Polls).
End Device Timeout: This is a value (often $2^n$ minutes) agreed upon when the child joins.
Timeout Counter: The parent maintains a counter for each child. Every time the child polls the parent, this counter is reset.
Aging Out: If the counter expires (no polls received within the timeout period), the parent "ages out" the child and may remove it from the neighbor table. This triggers a ZB_NWK_SIGNAL_CHILD_LOST or similar signal in ZBOSS.
