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Revision 6 (Frédéric Blanc, 2018-09-17 13:23) → Revision 7/19 (Frédéric Blanc, 2018-09-17 13:25)
h1. Wiki h2. Overview ESP32 is a series of low-cost, low-power system on a chip microcontrollers with integrated Wi-Fi (802.11 b/g/n) and dual-mode Bluetooth(v4.2 BR/EDR and BLE). The ESP32 series employs a Tensilica Xtensa LX6 microprocessor in both dual-core and single-core variations and includes in-built antenna switches, RF balun, power amplifier, low-noise receive amplifier, filters, and power-management modules. ESP32 is created and developed by Espressif Systems, a Shanghai-based Chinese company, and is manufactured by TSMC using their 40 nm process. It is a successor to the ESP8266 microcontroller. https://www.espressif.com/en/products/hardware/esp32/overview h2. Hardware h3. Wi-Fi Wi-Fi: 802.11 b/g/n h3. Bluetooth Bluetooth v4.2 BR/EDR and BLE h3. ADC !{width: 50%}esp32_adc001.png! Features • Two SAR ADCs, with simultaneous sampling and conversion • Up to five SAR ADC controllers for different purposes (e.g. high performance, low power or PWDET /PKDET). • Up to 18 analog input pads • One channel for internal voltage vdd33, two for pa_pkdet (available on selected controllers) • Low-noise amplifier for small analog signals (available on one controller) • 12-bit, 11-bit, 10-bit, 9-bit configurable resolution • DMA support (available on one controller) • Multiple channel-scanning modes (available on two controllers) • Operation during deep sleep (available on one controller) • Controlled by a ULP coprocessor (available on two controllers)