B102C Click

B102C Click is a compact add-on board designed for Bluetooth 5.0 (BLE) communication in various wireless applications. This board features the B102C, a Bluetooth module from Amphenol based on the Realtek RTL8762CMF chip. The board offers BLE v5.0 support, a 20MHz Arm® Cortex® M4F processor, and an integrated antenna for 2.4GHz communication, with low-power modes for optimal energy efficiency. It includes UART and USB Type-C connectivity, a PROG header for debugging, and fully programmable GPIOs.

Click Product page

Click library

• Author : Stefan Ilic
• Date : Feb 2024.
• Type : UART type

Software Support

We provide a library for the B102C Click as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.

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

Library Description

This library contains API for B102C Click driver.

Standard key functions :

• b102c_cfg_setup Config Object Initialization function.

  void b102c_cfg_setup ( b102c_cfg_t *cfg );

• b102c_init Initialization function.

  err_t b102c_init ( b102c_t *ctx, b102c_cfg_t *cfg );

• b102c_default_cfg Click Default Configuration function.

  err_t b102c_default_cfg ( b102c_t *ctx );

Example key functions :

• b102c_send_cmd This function sends a specified command to the B102C Click module.

  void b102c_send_cmd ( b102c_t *ctx, uint8_t *cmd );

• b102c_send_cmd_with_params This function sends a command with specified parameter to the Click module.

  void b102c_send_cmd_with_params ( b102c_t *ctx, uint8_t *at_cmd_buf, uint8_t *param_buf );

• b102c_send_cmd_params_check This function checks the command that is sent.

  void b102c_send_cmd_params_check ( b102c_t *ctx, uint8_t *at_cmd_buf );

Example Description

This example demonstrates the use of B102C Click board by processing the incoming data and displaying them on the USB UART.

The demo application is composed of two sections :

Application Init

Initializes the driver, then performs a factory reset and sets the local device name.

void application_init ( void ) 
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    b102c_cfg_t b102c_cfg;  /**< Click config object. */

    /** 
     * Logger initialization.
     * Default baud rate: 115200
     * Default log level: LOG_LEVEL_DEBUG
     * @note If USB_UART_RX and USB_UART_TX 
     * are defined as HAL_PIN_NC, you will 
     * need to define them manually for log to work. 
     * See @b LOG_MAP_USB_UART macro definition for detailed explanation.
     */
    LOG_MAP_USB_UART( log_cfg );
    log_init( &logger, &log_cfg );
    log_info( &logger, " Application Init " );

    // Click initialization.
    b102c_cfg_setup( &b102c_cfg );
    B102C_MAP_MIKROBUS( b102c_cfg, MIKROBUS_1 );
    if ( UART_ERROR == b102c_init( &b102c, &b102c_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
    Delay_ms ( 100 );

    log_printf( &logger, " Software reset. \r\n" );
    b102c_send_cmd( &b102c, B102C_CMD_RESET );
    app_error_flag = b102c_rsp_check( &b102c, B102C_RSP_READY );

    log_printf( &logger, " Factory reset. \r\n" );
    b102c_send_cmd( &b102c, B102C_CMD_DEFAULT );
    app_error_flag = b102c_rsp_check( &b102c, B102C_RSP_READY );

    log_printf( &logger, " Set device name. \r\n" );
    #define DEVICE_NAME             "B102C Click"
    b102c_send_cmd_with_params( &b102c, B102C_CMD_NAME, DEVICE_NAME );
    app_error_flag = b102c_rsp_check( &b102c, B102C_RSP_OK );

    log_printf( &logger, " Set Auto broadcast mode. \r\n" );
    #define AUTO_BROADCAST          "1"
    b102c_send_cmd_with_params( &b102c, B102C_CMD_ADVMOD, AUTO_BROADCAST );
    app_error_flag = b102c_rsp_check( &b102c, B102C_RSP_OK );

    log_info( &logger, " Application Task " );
    log_printf( &logger, " Connect to device. " );
}

Application Task

Reads and processes all incoming data and displays them on the USB UART.

void application_task ( void ) 
{
    if ( B102C_OK == b102c_process( &b102c ) ) 
    {
        b102c_log_app_buf( );
        b102c_clear_app_buf( );
    }
}

Note

For communication with B102C Click use the android application on the link: https://play.google.com/store/apps/details?id=com.macdom.ble.blescanner

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

Other Mikroe Libraries used in the example:

• MikroSDK.Board
• MikroSDK.Log
• Click.B102C

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 MikroElektronika compilers.