Hướng dẫn sử dụng Module ESP32 Wifi + Bluetooth

Đăng bởi 3M GROUP vào lúc 01/08/2017

1. Giới thiệu về Esp32.

Tải về datasheet: https://espressif.com/sites/default/files/documentation/esp32_datasheet_en.pdf
Sử dụng vi xử lý ensilica Xtensa dual core 32Bit LX6.
Tần số lên tới 240Mhz, với đặc tính hiệu năng lên đến 600DMIPS.
Hỗ trợ chế độ tiết kiệm năng lượng (Low Power), tuy nhiên vẫn cho phép lựa chọn thực hiện chuyển đổi ADC, tính toán, ..vv trong khi ngủ sâu.
Bộ nhớ:
- Bộ nhớ trong:
  - ROM: 448Kb (Support booting and core function).
  - SRAM: 520Kb (Support data and instruction).
  - RCT SLOW SRAM: 8Kb (Support co-procesor accessing during deep sleep mode).
  - RCT FAST SRAM: 8Kb (Support data storage and main CPU during RTC Boot from deep sleep mode).
  - EFUSE: 1Kbit (Of which 256 bits are used for the system (MAC address and chip configuration) and the remaining 768 bits are reserved for customer applications, including Flash-Encryption and Chip-ID.)
  - Bộ nhớ ngoài:
    - ESP32 supports up to 4 × 16 mebibytes of external QSPI Flash and SRAM with hardware encryption based on AES to protect developer’s programs and data.
  - Hộ trợ kết nối không dây:
    - Wifi: 11 b/g/n/e/i (802.11n @ 2.4 GHz up to 150 Mbit/s)
    - Bluetooth:2 BR/EDR and Bluetooth Low Energy (BLE)

2. So sánh ESP 8266 và ESP32

	ESP8266	ESP32
Central Processing Unit	Tensilica L106 32-bit micro controller 80MHz Clock – up to 160MHz No ROM, must be accessed via external SPI flash 160KB SRAM	Xtensa® Dual-Core 32-bit LX6 microprocessors 160MHz Clock – up to 240MHz 448 KB ROM 512 KB writeable SRAM
Peripheral Support	2 x UART SDIO 3 x SPI 1 x I2C 1 x I2S 1 x IR Remote Control 17 GPIO Pins 10-bit ADC 4 x PWM	Bluetooth v4.2/BLE 12-Bit SAR ADC 2 x 8-Bit DAC 10 Capacitive Touch Sensors Temperature Sensor 4 x SPI Bus 2 x I2S 2 x I2C 3 x UART SDIO Ethernet MAC for IEEE Support CAN 2.0 IR Remote Control Motor PWM LED PWM Hall Sensor Low Power Pre-Amplifier 36 GPIO Pins
Operating Voltage	3.0-3.6V	2.8-3.3V
Operating Temperature Range	-40-125°C	-40-125°C
Wireless Frequency	2.4 GHz	2.4 GHz
Wireless Protocols	802.11 b/g/n/e/i HT20	802.11 b/g/n/e/i HT40
Wireless Security	WPA/WPA2	WFA/WPA/WPA2/WAPI
Encryption	WEP/TKIP/AES	AES/HASH(SHA-2)/RSA/ECC/RNG
Dimensions	20mm x 18mm	26.0mm x 18.0mm