Adding support for Espressif ESP32

Picture of Alvaro Luis Bustamante
Alvaro Luis Bustamante

After the success of the ESP82266, espressif have developed a brand new device called ESP32, which is much more powerful and supports dual WiFi and Bluetooth connections. There are some dev kits ready for it use, and the espressif team is working in adding support from the Arduino IDE in their Github page.



Some specs about this nice boards:

Key Features 240 MHz dual core Tensilica LX6 microcontroller with 600 DMIPS

Integrated 520 KB SRAM

Integrated 802.11BGN HT40 Wi-Fi transceiver, baseband, stack and LWIP

Integrated dual mode Bluetooth (classic and BLE)

16 MByte flash

2.2V to 3.6V operating voltage

-40°C to +125°C operating temperature

On-board PCB antenna / IPEX connector for external antenna

Sensors Ultra-low noise analog amplifier

Hall sensor

10x capacitive touch interface

32 kHz crystal oscillator

32x GPIO 3 x UARTs, including hardware flow control

3 x SPI

2 x I2S

12 x ADC input channels

2 x DAC

2 x I2C

PWM/timer input/output available on every GPIO pin

OpenOCD debug interface with 32 kB TRAX buffer

SDIO master/slave 50 MHz

Supports external SPI flash up to 16 MB

SD-card interface support

Security Related WEP, WPA/WPA2 PSK/Enterprise

Hardware accelerated encryption: AES / SHA2 / Elliptical Curve Cryptography / RSA-4096

Performance Supports sniffer, station, softAP and Wi-Fi direct modes

Max data rate of 150 Mbps@11n HT40, 72 Mbps@11n HT20, 54 Mbps@11g, and 11 Mbps@11b

Maximum transmit power of 19.5 dBm@11b, 16.5 dBm@11g, 15.5 dBm@11n

Minimum receiver sensitivity of -98 dBm

135 Mbps UDP sustained throughput

2.5 μA deep sleep current

The libraries are not mature at this moment (not like the ESP8266 ones), and they currently lack support for TLS/SSL connections, and even analogWrite functionality. However, they are stable enough to start providing support for connecting the boards to the Internet. Notice, however, that the result might not be quite stable, as they are still working in the libraries.

You can update the libraries directly from the ArduinoIDE, where a new ESP32 example will appear. Here is an example of the ESP32 connected to the platform!

Do you have any doubts? Contact us!

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