Wirepas Click

How does it work?

Wirepas Click is based on the WIRL-PRO2 Thetis-I, a radio module with Wirepas Mesh Protocol from Würth Elektronik. The module is meant to be integrated into Wirepas-based routing networks for wireless communication between devices or nodes. The module transmits data securely and reliably in the license-free 2.4 GHz band, which is globally available and features both authentication and encryption mechanisms. The WIRL-PRO2 Thetis-I module features small dimensions comparable to a nano-SIM card (8 mm x 12 mm), including an onboard PCB antenna, making the modules ideal for small-form-factor design.

The module works in a frequency range of 2402 up to 2480MHz with a data rate of up to 1Mbps. It is based on nRF52840, a 32-bit ARM Cortex-M4 microcontroller from Nordic Semiconductor. It is accompanied by 1MB of Flash and 256KB of RAM. It has a printed antenna with a smart antenna configuration (2-in-1 module), which allows up to +6dBm of transmit power and -92dBm sensitivity. The connectivity can be even better with an external one attached to the onboard N.FL connector from a vast MIKROE offer.

Wirepas Click can work as a beacon because of its very small power consumption. For this purpose, it is equipped with a backup battery. In addition, there are two user-configurable indication LEDs, LED1 and LED2 (blue and green). In addition, the Wirepas Click is also equipped with an unpopulated header for debugging purposes, which allows you direct communication to the Wirepas microcontroller.

Wirepas Click uses a standard 2-wire UART interface to communicate with the host MCU, supporting 115200bps of bitrate. You can reset the device over the RST pin. There is the DIN pin to observe the data flow, which is a data indication to the host MCU with an active Low logic state.

This Click board™ can be operated only with a 3.3V logic voltage level. The board must perform appropriate logic voltage level conversion before using MCUs with different logic levels. Also, it comes equipped with a library containing functions and an example code that can be used as a reference for further development.

Specifications

Pinout diagram

This table shows how the pinout on Wirepas Click 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
Reset	RST	2	RST	INT	15	DIN	Data Indication
ID COMM	CS	3	CS	RX	14	TX	UART TX
	NC	4	SCK	TX	13	RX	UART RX
	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

Wirepas Click electrical specifications

Software Support

We provide a library for the Wirepas Click as well as a demo application (example), developed using MIKROE compilers. The demo can run on all the main MIKROE development boards.

Package can be downloaded/installed directly from NECTO Studio Package Manager (recommended), downloaded from our LibStock™ or found on Mikroe github account.

Library Description

This library contains API for Wirepas Click driver.

Key functions

• wirepas_send_command Wirepas send command function.

• wirepas_write_csap_attribute Wirepas write CSAP attribute function.

• wirepas_send_data Wirepas send data function.

Example Description

This example demonstrates the use of Wirepas click board by processing the incoming data and displaying them on the USB UART in sink mode, and sending data to
the sinks in router mode.

void application_task ( void ) 
{
#if ( ROUTER_NODE_ADDRESS == NODE_ADDRESS )

    log_printf( &logger, " Sending data to the first Sink node: n" );
    wirepas_send_data ( &wirepas, frame_id, sink_1, 0x01, strlen( TX_DATA ), TX_DATA );
    frame_id++;
    wirepas_get_resp( &wirepas );
    Delay_ms( 5000 );

    #if defined MULTI_SINK_MODE
        log_printf( &logger, " Sending data to the second Sink node: n" );
        wirepas_send_data ( &wirepas, frame_id, sink_2, 0x01, strlen( TX_DATA ), TX_DATA );
        frame_id++;
        wirepas_get_resp( &wirepas );
        Delay_ms( 5000 );
    #endif
#else

    uint8_t data_buf[ WIREPAS_RX_DRV_BUFFER_SIZE ] = { 0 };
    uint8_t data_rdy = 0;
    err_t error = wirepas_poll_indication( &wirepas, frame_id, data_buf, &data_rdy );
    frame_id++;
    if ( 1 == data_rdy )
    {
        log_printf( &logger, "%s rn", data_buf );
    }
    Delay_ms( 2000 );
#endif
}

The full application code, and ready to use projects can be installed directly from NECTO Studio Package Manager (recommended), downloaded from our LibStock™ or found on Mikroe github account.

Other Mikroe Libraries used in the example:

• MikroSDK.Board
• MikroSDK.Log
• Click.Wirepas

Additional notes and informations

Depending on the development board you are using, you may need USB UART click, USB UART 2 Click or RS232 Click to connect to your PC, for development systems with no UART to USB interface available on the board. UART terminal is available in all MIKROE compilers.

mikroSDK

This Click board™ is supported with mikroSDK – MIKROE 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.