WiFi event handling
NodeMCU-32S The strongest ESP32 development board Non-pirated or sub-factory CH340 WiFi Bluetooth ESP-32 Arduino IDE available
ESP32-S is a general-purpose WiFi-BT-BLE MCU module with powerful functions and a wide range of uses. It can be used for low-power sensor networks and demanding tasks, such as voice encoding, audio streaming, and MP3 decoding.
The core of this module is the ESP32 chip, which is scalable and adaptive. The two CPU cores can be individually controlled or powered on. The adjustment range of the clock frequency is from 80 MHz to 240 MHz. The user can cut off the power of the CPU and use the low-power coprocessor to continuously monitor the status changes of the peripherals or whether certain analog quantities exceed the threshold. ESP32 also integrates a wealth of peripherals, including capacitive touch sensors, Hall sensors, low-noise sensor amplifiers, SD card interface, Ethernet interface, high-speed SDIO/SPI, UART, I2S and I2C, etc. The following will explain in detail the environment setup for developing ESP32 using Arduino IDE.
Through the previous example:
- NodeMCU-ESP32 Development Example-Connect to WiFi
- NodeMCU-ESP32 development example-WiFi working mode of ESP32
- NodeMCU-ESP32 development example-scanning available WiFi networks and WiFi signal strength detection
When processing WiFi network scanning and connection, the active polling method is used. This method is inefficient in data processing intensive. The following will introduce the WiFi event handling method of ESP32.
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