BT-EZ click

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  • MIKROE-4038
  • 4038
The  BT-EZ click  is a Click board™ which provide BLE connectivity for any embedded... more
Product information "BT-EZ click"

The BT-EZ click is a Click board™ which provide BLE connectivity for any embedded application. BT-EZ click based on the CYBT-343026-01 module, from Infineon. This Click board™ is a fully integrated bluetooth low energy module, mentioned for easy integration into various electronic devices. Given its features, this click can be used for health, sports, and wellness devices as well as Industrial, home, and building automation; and smart phone, tablet, and PC accessories.

BT-EZ click is supported by a mikroSDK compliant library, which includes functions that simplify software development. This Click board™ comes as a fully tested product, ready to be used on a system equipped with the mikroBUS™ socket.

The BT-EZ click is a Click board™ features the CYBT-343026-01, a module from Infineon that has some impressive features including the fact that it includes a royalty-free bluetooth stack with Bluetooth 5.0 and BLE supported. Besides that, low power mode enables the module to consume as low as 2.69µA in deep sleep mode, which is ideal for portable, wearable and various other battery powered devices and applications.

Click Boards Wireless Connectivity BT/BLE BT-EZ Click

The BT-EZ Click is fully integrated Bluetooth smart ready wireless module which includes an onboard crystal oscillator, passive components, flash memory, and the CYW20706 silicon device from Infineon. The CYBT-343026-01 module also includes Cortex-M3 32-bit processor and 512 KB of onboard serial flash memory and is designed for standalone operation, while the integrated power amplifier is used in order to achieve Class I or Class II output power capability. The BT-EZ click board uses UART communication and GPIO pins for communication with the main MCU.

The BT-EZ click is a Click board™ supports two UART communication modes. HCI UART intercafe is a standard, 4-wire interface (RX, TX, RTS, and CTS), with adjustable baud rates from 38400 bps to 4 Mbps. During initial boot, UART speeds may be limited to 750 kbps. The baud rate may be selected via a vendor-specific UART HCI command. The UART clock default setting is 24 MHz, and can be configured to run as high as 48 MHz to support up to 4 Mbps. The baud rate of the CYBT-343026-01UART module is controlled by two values: clock divisor (set in the DLBR register) that divides the UART clock by an integer multiple of 16, and the baud rate adjustment (set in the DHBR register) that is used to specify a number of UART clock cycles to stuff in the first or second half of each bit time.

The BT-EZ click has a second UART (PUART) mode, that may be used to interface to other eripherals. This peripheral UART is accessed through the optional I/O ports, which can be configured individually and separately for each signal.

The external I2C pad provides a 2-pin master I2C interface, which can be used to retrieve configuration information from an external EEPROM or to communicate with peripherals such as track-ball or touch-pad modules, and motion tracking ICs used in mouse devices. This interface is compatible with I2C slave devices. I2C does not support multimaster capability or flexible wait-state insertion by either master or slave devices.

This Click Board™ is designed to be operated only with 3.3V logic level. A proper logic voltage level conversion should be performed before the Click board™ is used with MCUs with logic levels of 5V.

Specifications:

Type BT/BLE
Applications Health/Medical Devices, Sports Activity/Fitness Meters, Beacon Applications, Internet of Things (IoT) Sensor Tag, Remote Control, Wearable Smart Devices and Accessories, Smart Energy/Smart Home, Industrial Control
On-board modules CYBT-343026-01 , Bluetooth 5 low energy module from Cypress
Key Features Bluetooth 5 low energy compliant, integrated antenna, Cortex-M3 32-bit processor
Interface UART
Compatibility mikroBUS
Click board size M (42.9 x 25.4 mm)
Input Voltage 3.3V

PinOut Diagram:

This table shows how the pinout on BT-EZ click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).

NotesPinMikrobus logo.pngPinNotes
  NC 1 AN PWM 16 NC  
Reset RST 2 RST INT 15 RTS UART request to send
UART clear to send CTS 3 CS RX 14 TX UART Transmit
  NC 4 SCK TX 13 RX UART Receive
  NC 5 MISO SCL 12 NC  
  NC 6 MOSI SDA 11 NC  
Power Supply 3.3V 7 3.3V 5V 10 NC  
Ground GND 8 GND GND 9 GND Ground

OnBoard Settings And Indicators:

LabelNameDefault Description
LD1 PWR - Power LED Indicator
J1-J4 UART SEL Left Select UART communication: Left position PUART, right position HCI UART

Software Support:

We provide a library for the BT-EZ Click on our LibStock page, as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.

Library Description

The library contains basic functions for click-on communication.

Key functions:

  • void btez_send_cmd ( char *cmd_text ) - Function to send a single command
  • void btez_device_reset ( void ) - Device reset

Examples description

The application is composed of three sections :

  • System Initialization - Initializes the uart module and all the necessary gpio pins
  • Application Initialization - Initializes the driver init, resets the module and starts basic commands
  • Application Task - Sends a message to the connected device
  • Note - We used the BLUE-SPP application for the test .. We connect to the BT-EZ click through the application and send the message "MikroE". Also the app receives a click message every 10s.
void application_task ( )
{
btez_send_cmd( &SEND_DATA[ 0 ] );
Delay_ms( 10000 );
}

The full application code, and ready to use projects can be found on our LibStock page.

Other mikroE Libraries used in the example:

  • UART Library
  • Conversions Library

Additional notes and informations

Depending on the development board you are using, you may need USB UART clickUSB UART 2 click or RS232 click to connect to your PC, for development systems with no UART to USB interface available on the board. The terminal available in all MikroElektronika compilers, or any other terminal application of your choice, can be used to read the message.

MikroSDK:

This Click board™ is supported with mikroSDK - MikroElektronika Software Development Kit. To ensure proper operation of mikroSDK compliant Click board™ demo applications, mikroSDK should be downloaded from the LibStock and installed for the compiler you are using.

For more information about mikroSDK, visit the official page.

Resources:

 Click board™ Catalog

 Click boards™

 mikroBUS™

 mikroSDK

Downloads:

 BT-EZ click example on Libstock

 BT-EZ click 2D and 3D files

 BT-EZ click schematic

 CYBT-343026-01 datasheet

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