WiFi 11 Click Board™

Product Code: MIKROE-4245

How Does The WiFi 11 Click Board™ Work? The WiFi 11 Click Board™ is based on the BW16, a low-power dual bands Wireless LAN (WLAN) and Bluetooth Low Energy SoC module from Ai-Thinker. The BW16 module represents a highly integrated Wi-Fi and Bluetooth SOC based on the RTL8720DN, a highly integrated Single-Chip with a low power dual bands (2.4GHz and 5GHz), Wireless LAN (WLAN), and Bluetooth Low Energy (v5.0). It consists of a high-performance MCU (ARM V8M, Cortex-M4F instruction compatible) named KM4, a low power MCU (ARM V8M, Cortex-M0 instruction compatible) named KM0, WLAN (802.11 a/b/g/n) MAC, a 1T1R capable WLAN baseband, RF, Bluetooth, and other peripherals. The BW16 integrates internal memories for complete WIFI and BLE 5.0 protocol functions. The embedded memory configuration also provides simple application developments. The WiFi 11 Click Board™ communicates with MCU using the UART interface at 57600 bps as its default communication protocol, but it is also left the option for the user to use other interfaces such as SPI and I2C if he wants to configure the module and write the library by himself.

There is also a jumper JP1 on this Click board™ that enables the necessary pull-up resistors on the SCL and SDA lines of I2C communication. NOTE: After primary module initialization, and before any program uploading, user should write network parameters and TCP server parameters. Additional functionality such as the Chip Enable button labelled as RST, which is used to Enable or put the module in Shut-Down mode, is provided and routed at EN pin of the mikroBUS™ socket. Alongside this pin, this Click board™ has one general purpose pin GP1 routed at the INT pin of the mikroBUS™ socket, which can be used in various cases like interrupt or some other purposes. WiFi 11 Click also has an additional header with UART RX0 and TX0 module pins on itself together with a button labelled as LOG_TX which can be used for Firmware Update or as low-power mode Wake-Up function. The WiFi 11 Click Board™ is designed to be operated only with a 3.3V logic voltage level. A proper logic voltage level conversion should be performed before the Click board™ is used with MCUs with different logic levels. However, the Click board™ comes equipped with a library that contains easy to use functions and a usage example that may be used as a reference for further development. SPECIFICATIONS Type WiFi Applications Can be used for industrial wireless control, Bluetooth gateway, security ID tags, smart home applications, and many more. On-board modules The WiFi 11 Click Board™ is based on the BW16, a low-power dual bands Wireless LAN (WLAN) and Bluetooth Low Energy SoC module from Ai-Thinker. Key Features Ultra-low power consumption, support low-power Tx/Rx for short-range applications, support BLE, supported TrustZone-M and Secure boot, eFuse protection, and more. Interface I2C,SPI,UART Compatibility mikroBUS Click board size L (57.15 x 25.4 mm) Input Voltage 3.3V PINOUT DIAGRAM This table shows how the pinout of the WiFi 11 Click Board™ corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns). Notes Pin Pin Notes NC 1 AN PWM 16 NC Chip Enable EN 2 RST INT 15 GP1 General Purpose Pin SPI Chip Select CS 3 CS RX 14 TX UART TX SPI Clock SCK 4 SCK TX 13 RX UART RX SPI Data OUT SDO 5 MISO SCL 12 SCL I2C Clock SPI Data IN SDI 6 MOSI SDA 11 SDA I2C Data Power Supply 3.3V 7 3.3V 5V 10 NC Ground GND 8 GND GND 9 GND Ground ONBOARD SETTINGS AND INDICATORS Label Name Default Description LD1 PWR -