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fix(wifi): fix max connection number issue

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muhaidong
2026-05-06 20:48:22 +08:00
parent f7a5ef7ad5
commit 47e680d2cd
7 changed files with 55 additions and 111 deletions
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docs/en/api-guides/wifi-driver/overview.rst
+25 -51
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@@ -387,9 +387,11 @@ The :ref:`wifi-event-connectionless-module-wake-interval-start` will arise at th
{IDF_TARGET_MAX_CONN_STA_NUM:default="15", esp32c2="4", esp32c3="10", esp32c6="10"}
{IDF_TARGET_MAX_CONN_STA_NUM:default="15", esp32c2="4"}
{IDF_TARGET_SUB_MAX_NUM_FROM_KEYS:default="2", esp32c3="7", esp32c6="7"}
{IDF_TARGET_SUB_MAX_NUM_FROM_KEYS:default="2", esp32c2="0"}
{IDF_TARGET_SUPPORT_ENCRYPT_NUM:default="17", esp32c2="4"}
.. _wifi-configuration:
@@ -525,56 +527,28 @@ AP Basic Configuration
API :cpp:func:`esp_wifi_set_config()` can be used to configure the AP. And the configuration will be stored in NVS. The table below describes the fields in detail.
.. only:: esp32 or esp32s2 or esp32s3 or esp32c3 or esp32c5 or esp32c6
.. list-table::
:header-rows: 1
:widths: 15 55
.. list-table::
:header-rows: 1
:widths: 15 55
* - Field
- Description
* - ssid
- SSID of AP; if the ssid[0] is 0xFF and ssid[1] is 0xFF, the AP defaults the SSID to ``ESP_aabbcc``, where “aabbcc” is the last three bytes of the AP MAC.
* - password
- Password of AP; if the auth mode is ``WIFI_AUTH_OPEN``, this field will be ignored.
* - ssid_len
- Length of SSID; if ssid_len is 0, check the SSID until there is a termination character. If ssid_len > 32, change it to 32; otherwise, set the SSID length according to ssid_len.
* - channel
- Channel of AP; if the channel is out of range, the Wi-Fi driver will return error. So, please make sure the channel is within the required range. For more details, refer to `Wi-Fi Country Code`_.
* - authmode
- Auth mode of ESP AP; currently, ESP AP does not support AUTH_WEP. If the authmode is an invalid value, AP defaults the value to ``WIFI_AUTH_OPEN``.
* - ssid_hidden
- If ssid_hidden is 1, AP does not broadcast the SSID; otherwise, it does broadcast the SSID.
* - max_connection
- The max number of stations allowed to connect in, the default value is 10. ESP Wi-Fi supports up to {IDF_TARGET_MAX_CONN_STA_NUM} (``ESP_WIFI_MAX_CONN_NUM``) Wi-Fi connections. Please note that ESP AP and ESP-NOW share the same encryption hardware keys, so the max_connection parameter will be affected by the :ref:`CONFIG_ESP_WIFI_ESPNOW_MAX_ENCRYPT_NUM`. The total number of encryption hardware keys is 17, if :ref:`CONFIG_ESP_WIFI_ESPNOW_MAX_ENCRYPT_NUM` <= {IDF_TARGET_SUB_MAX_NUM_FROM_KEYS}, the max_connection can be set up to {IDF_TARGET_MAX_CONN_STA_NUM}, otherwise the max_connection can be set up to (17 - :ref:`CONFIG_ESP_WIFI_ESPNOW_MAX_ENCRYPT_NUM`).
* - beacon_interval
- Beacon interval; the value is 100 ~ 60000 ms, with default value being 100 ms. If the value is out of range, AP defaults it to 100 ms.
.. only:: esp32c2
.. list-table::
:header-rows: 1
:widths: 15 55
* - Field
- Description
* - ssid
- SSID of AP; if the ssid[0] is 0xFF and ssid[1] is 0xFF, the AP defaults the SSID to ``ESP_aabbcc``, where “aabbcc” is the last three bytes of the AP MAC.
* - password
- Password of AP; if the auth mode is ``WIFI_AUTH_OPEN``, this field will be ignored.
* - ssid_len
- Length of SSID; if ssid_len is 0, check the SSID until there is a termination character. If ssid_len > 32, change it to 32; otherwise, set the SSID length according to ssid_len.
* - channel
- Channel of AP; if the channel is out of range, the Wi-Fi driver defaults to channel 1. So, please make sure the channel is within the required range. For more details, refer to `Wi-Fi Country Code`_.
* - authmode
- Auth mode of ESP AP; currently, ESP AP does not support AUTH_WEP. If the authmode is an invalid value, AP defaults the value to ``WIFI_AUTH_OPEN``.
* - ssid_hidden
- If ssid_hidden is 1, AP does not broadcast the SSID; otherwise, it does broadcast the SSID.
* - max_connection
- The max number of stations allowed to connect in, the default value is 2. ESP Wi-Fi supports up to {IDF_TARGET_MAX_CONN_STA_NUM} (``ESP_WIFI_MAX_CONN_NUM``) Wi-Fi connections. Please note that ESP AP and ESP-NOW share the same encryption hardware keys, so the max_connection parameter will be affected by the :ref:`CONFIG_ESP_WIFI_ESPNOW_MAX_ENCRYPT_NUM`. The total number of encryption hardware keys is {IDF_TARGET_MAX_CONN_STA_NUM}, the max_connection can be set up to ({IDF_TARGET_MAX_CONN_STA_NUM} - :ref:`CONFIG_ESP_WIFI_ESPNOW_MAX_ENCRYPT_NUM`).
* - beacon_interval
- Beacon interval; the value is 100 ~ 60000 ms, with default value being 100 ms. If the value is out of range, AP defaults it to 100 ms.
* - Field
- Description
* - ssid
- SSID of AP; if the ssid[0] is 0xFF and ssid[1] is 0xFF, the AP defaults the SSID to ``ESP_aabbcc``, where “aabbcc” is the last three bytes of the AP MAC.
* - password
- Password of AP; if the auth mode is ``WIFI_AUTH_OPEN``, this field will be ignored.
* - ssid_len
- Length of SSID; if ssid_len is 0, check the SSID until there is a termination character. If ssid_len > 32, change it to 32; otherwise, set the SSID length according to ssid_len.
* - channel
- Channel of AP; set to 0 for auto selection (min channel: typically 1 for 2.4G, 36 for 5G). Other invalid values return ``ESP_ERR_INVALID_ARG``. So, please make sure the channel is within the required range. For more details, refer to `Wi-Fi Country Code`_.
* - authmode
- Auth mode of ESP AP; currently, ESP AP does not support AUTH_WEP. If the authmode is an invalid value, AP defaults the value to ``WIFI_AUTH_OPEN``.
* - ssid_hidden
- If ssid_hidden is 1, AP does not broadcast the SSID; otherwise, it does broadcast the SSID.
* - max_connection
- The max number of stations allowed to connect in. {IDF_TARGET_NAME} supports up to {IDF_TARGET_MAX_CONN_STA_NUM} (``ESP_WIFI_MAX_CONN_NUM``) Wi-Fi connections. Please note that soft-AP and ESP-NOW share the same encryption hardware keys, so the max_connection parameter will be affected by the :ref:`CONFIG_ESP_WIFI_ESPNOW_MAX_ENCRYPT_NUM`. The total number of encryption hardware keys is {IDF_TARGET_SUPPORT_ENCRYPT_NUM}, if :ref:`CONFIG_ESP_WIFI_ESPNOW_MAX_ENCRYPT_NUM` <= {IDF_TARGET_SUB_MAX_NUM_FROM_KEYS}, the max_connection can be set up to {IDF_TARGET_MAX_CONN_STA_NUM}, otherwise the max_connection can be set up to ({IDF_TARGET_SUPPORT_ENCRYPT_NUM} - :ref:`CONFIG_ESP_WIFI_ESPNOW_MAX_ENCRYPT_NUM`).
* - beacon_interval
- Beacon interval; the value is 100 ~ 60000 ms, with default value being 100 ms. If the value is out of range, AP defaults it to 100 ms.
Wi-Fi Protocol Mode