Espressif Systems ESP Faq page 6

3.9.3 Can Wi-Fi be used with ESP-NOW at the same time?
3.9.4 How do I set the rate at which ESP-NOW data is sent?
3.9.5 ESP-NOW allows pairing with a maximum of 20 devices. Is there a way to control more
devices?
3.9.6 What is the maximum number of devices that can be controlled by ESP-NOW?
3.9.7 Do I need to connect a router for communication between ESP-NOW devices?
3.9.8 Why does ESP-NOW limit the data length of each packet to 250 bytes? Can it be configured?
3.9.9 What should I pay attention to when using ESP-NOW applications?
3.9.10 How can I reduce power consumption when using ESP-NOW?
3.9.11 In addition to wireless communication through ESP-NOW, is there any other better way to
realize one-to-one and one-to-many communication?
3.9.12 Do ESP-NOW applications support sending packets over each Wi-Fi channel?
3.9.13 Are there any special procedures required if I intend to use ESP-NOW for commercial
purposes? Could you provide technical documentation on ESP-NOW? To evaluate the
quality of wireless communication, I would like to know relevant information about pa-
rameters including CSMA/CA, modulation method, and bit rate.
3.9.14 I tested the application esp-idf/examples/wifi/espnow using ESP32. Does it only support
connecting to 7 encrypted devices at the maximum?
3.10 ESP RainMaker cloud service
3.11 ios application
3.12 Third party cloud service
3.12.1 Are there any examples for OTA upgrading?
3.12.2 Does ESP Azure library support Azure IoT Central? Is there an example?
3.12.3 What should I do to connect ESP32 to Alibaba Cloud via ESP32 + Ethernet + MQTT?
3.12.4 what do Alexa LED states indicate?
3.13 ESP-WIFI-MESH development framework
3.13.1 What is the maximum data transmission load for Wi-Fi mesh?
3.13.2 Does ESP32's Wi-Fi Mesh supports No Router self-networking?
3.13.3 What is the maximum number of node layers allowed when ESP32 uses Wi-Fi Mesh?
3.13.4 When
mdf/examples/function_demo/mwifi/router example, After ESP32 is connected to
the router, the device name in connection is "espressif". How to modify this name?
3.13.5 Can Wi-Fi Mesh send messages to specific nodes via TCP Server?
3.13.6 During the operation of the ESP32 Wi-Fi Mesh network, if the Root node is lost, what
events will the system report back?
3.13.7 I'm using ESP32 for Wi-Fi Mesh application with the esp_mesh_send() function,
but the server did not receive any data. How to transfer data from leaf nodes to external
servers?
3.13.8 How do I upgrade my ESP-MESH device via OTA after networking?
3.13.9 Can you provide ESP-MESH light reference design?
3.13.10 What is the default mode for ESP-MESH nodes without any configuration?
3.13.11 ESP-MESH starts with AP+STA mode enabled, can the phone search for APs?
3.13.12 Do I need to rescan for all the newly added devices when the original device has already
been networked?
3.13.13 When using an ESP32 as a master device to synchronize time for multiple slave devices,
can the time error be less than 2 ms?
3.13.14 How do I get the type of the node in ESP-MESH?
3.13.15 Is there any demo of ESP-Mesh root node sending messages to a service via ethernet?
3.13.16 Does the esp-mesh-lite solution support the applications without routers?
3.13.17 When esp-wifi-mesh is already networked, does the root or node device can also
enable Wi-Fi Scan to scan surrounding available AP information?
3.13.18 How can I switch to a new router for networking when using the esp-wifi-mesh
router solution?
4 Software framework
4.1 Bluetooth LE & Bluetooth
4.1.1 When porting example gatt_server, an error occurred indicating head file does not exist.
What could be the reasons?
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using an ESP32
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development board
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