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fix(esp_netif): Prevent running esp_netif_sntp_init() multiple times

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Closes https://github.com/espressif/esp-idf/issues/12854
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David Cermak
2024-01-08 11:09:35 +01:00
parent 37f0447961
commit feef14b43b
4 changed files with 13 additions and 4 deletions
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docs/en/api-reference/network/esp_netif.rst
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@@ -264,7 +264,7 @@ You can find a brief introduction to SNTP in general, its initialization code, a
This section provides more details about specific use cases of the SNTP service, with statically configured servers, or use the DHCP-provided servers, or both. The workflow is usually very simple:
1) Initialize and configure the service using :cpp:func:`esp_netif_sntp_init()`.
1) Initialize and configure the service using :cpp:func:`esp_netif_sntp_init()`. This operations can only be called once (unless the SNTP service has been destroyed by :cpp:func:`esp_netif_sntp_deinit()`)
2) Start the service via :cpp:func:`esp_netif_sntp_start()`. This step is not needed if we auto-started the service in the previous step (default). It is useful to start the service explicitly after connecting if we want to use the DHCP-obtained NTP servers. Please note, this option needs to be enabled before connecting, but the SNTP service should be started after.
3) Wait for the system time to synchronize using :cpp:func:`esp_netif_sntp_sync_wait()` (only if needed).
4) Stop and destroy the service using :cpp:func:`esp_netif_sntp_deinit()`.