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docs: sync up line number for api reference

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2022-05-07 18:40:41 +08:00
parent 179ea878c7
commit 5a1c257f96
7 changed files with 75 additions and 48 deletions
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docs/en/api-reference/network/esp_now.rst
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@@ -85,8 +85,7 @@ Send ESP-NOW Data
Call :cpp:func:`esp_now_send()` to send ESP-NOW data and :cpp:func:`esp_now_register_send_cb()` to register sending callback function. It will return `ESP_NOW_SEND_SUCCESS` in sending callback function if the data is received successfully on the MAC layer. Otherwise, it will return `ESP_NOW_SEND_FAIL`. Several reasons can lead to ESP-NOW fails to send data. For example, the destination device doesn't exist; the channels of the devices are not the same; the action frame is lost when transmitting on the air, etc. It is not guaranteed that application layer can receive the data. If necessary, send back ack data when receiving ESP-NOW data. If receiving ack data timeouts, retransmit the ESP-NOW data. A sequence number can also be assigned to ESP-NOW data to drop the duplicate data.
If there is a lot of ESP-NOW data to send, call :cpp:func:`esp_now_send()` to send less than or equal to 250 bytes of data once a time.
Note that too short interval between sending two ESP-NOW data may lead to disorder of sending callback function. So, it is recommended that sending the next ESP-NOW data after the sending callback function of the previous sending has returned. The sending callback function runs from a high-priority Wi-Fi task. So, do not do lengthy operations in the callback function. Instead, post the necessary data to a queue and handle it from a lower priority task.
If there is a lot of ESP-NOW data to send, call :cpp:func:`esp_now_send()` to send less than or equal to 250 bytes of data once a time. Note that too short interval between sending two ESP-NOW data may lead to disorder of sending callback function. So, it is recommended that sending the next ESP-NOW data after the sending callback function of the previous sending has returned. The sending callback function runs from a high-priority Wi-Fi task. So, do not do lengthy operations in the callback function. Instead, post the necessary data to a queue and handle it from a lower priority task.
Receiving ESP-NOW Data
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