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Grove - UART WiFi 無線網路模組

$ 500 元 原價 500
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原廠網址：http://www.seeedstudio.com/wiki/Grove_-_UART_WiFi

Introduction

Grove - UART WiFi is a serial transceiver module featuring the ubiquitous ESP8266 IoT SoC. With integrated TCP/IP protocol stack, this module lets your microcontroller interact with WiFi networks with only a few lines of code. Each ESP8266 module comes pre-programmed with an AT command set firmware, meaning you can send simple text commands to control the device. The SoC features integrated WEP, WPA/WPA2, TKIP, AES, and WAPI engines, can act as an access point with DHCP, can join existing WiFi networks and has configurable MAC and IP addresses.


Model: I want to buy it

Features

  • Grove 4-pin connector (RX,TX,VCC,GND)
  • 802.11 b/g/n protocol (2.4GHz)
  • WiFi Direct (P2P), soft-AP
  • Supports three modes: AP, STA and AP+STA coexistence mode
  • Integrated TCP/IP protocol stack
  • LwIP (lightweight IP)
  • Integrated low power 32-bit CPU could be reprogrammed as an application processor
  • Integrated temperature sensor
  • Serial UART Interface
  • Multi-queue QoS management
  • Wake up and transmit packets in < 2ms
  • Metal shielding
  • Onboard ceramic antenna
  • Reset switch

Hardware Overview

Here is block diagram of Grove - UART WiF module which consists of following parts.

Grove uart wifi wiki hardware overview.jpg

  • Grove - Used to connect to a processor through socket on a base board such as a Seeeduino orGrove Base Shield.
  • WiFi antenna - Antenna for ESP8266(Module model)
  • Button - With multi-functions
    • Reset - Press down and release quickly.
    • Set ESP8266(Module model) into UART boot mode - Press and hold button until centered red LED indicator light on.
  • Led Indicator - Used to indicate working status and for operations by user.
    • Left - a blue LED indicator - Controlled by user through command "AT+LEDON" and "AT+LEDOFF".
    • Middle - a red LED indicator - light on while Wifi connected or go into UART boot mode
    • Right - a green LED indicator - light on while power on.

Specifications

  • Input voltage: 3V / 5V
  • Baud Rate: 115200
  • Based on ESP8266 ESP-06 SoC
  • AT Firmware: esp_iot_sdk_v1.1.0 + Seeed modifications:
2x additional AT commands to control blue Link LED.
Register red WiFi LED to the ESP8266 wifi state LED.
  • AT command set
  • SDIO 1.1/2.0, SPI, UART
  • Five power states: OFF, DEEP_SLEEP, SLEEP, WAKEUP and ON.
  • Standby power consumption of < 1.0mW (DTIM=3)
  • Integrated TR switch, balun, LNA, power amplifier and matching network
  • Integrated PLLs, regulators, DCXO and power management units
  • +19.5dBm output power in 802.11b mode
  • Power down leakage current of <10uA
  • Hardware accelerators for CCMP (CBC-MAC, counter mode), TKIP (MIC, RC4), WAPI (SMS4), WEP (RC4), CRC
  • WPA/WPA2 PSK, and WPS driver
  • A-MPDU & A-MSDU aggregation & 0.4ms guard interval
  • Dimensions: 25.43mm x 20.35mm

Ultra-low power technology

The ESP8266 was designed to achieve very low energy consumption with patented power management technology that reduces non-essential functions and regulates sleep patterns. There are five power states:

  • OFF
  • DEEP_SLEEP - the real-time clock runs but all other parts of the chip are closed
  • SLEEP - consumes less than 12uA with only real-time clock and watchdog running. The chip will wake on MAC, host, RTC or external interrupt.
  • WAKEUP - the system is changing from a sleep to on state. Crystal oscillator and PLL are enabled.
  • ON - consumes less than 1.0mW (DTIM = 3) or 0.5mW (DTIM = 10).


The Real-time clock can be programmed to wake the ESP8266 within a specified period of time.

The higher the DTIM period, the longer the device may sleep and therefore the more power the devic

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