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mikroSDK Library

CXPI Click

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Author: MIKROE

Last Updated: 2024-10-31

Package Version: 2.1.0.13

mikroSDK Library: 2.0.0.0

Category: CXPI

Downloaded: 436 times

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License: MIT license  

CXPI Click is a compact add-on board that contains a transceiver that supports the next-generation automotive communication protocol. This board features the BD41000AFJ-C, a transceiver for the CXPI (Clock Extension Peripheral Interface) communication from Rohm Semiconductor.

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  • mikroSDK Library 1.0.0.0
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mikroSDK Library Blog


CXPI Click

CXPI Click is a compact add-on board that contains a transceiver that supports the next-generation automotive communication protocol. This board features the BD41000AFJ-C, a transceiver for the CXPI (Clock Extension Peripheral Interface) communication from Rohm Semiconductor.

cxpi_click.png

Click Product page


Click library

  • Author : Stefan Ilic
  • Date : Aug 2021.
  • Type : UART type

Software Support

We provide a library for the CXPI 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 CXPI Click driver.

Standard key functions :

  • cxpi_cfg_setup Config Object Initialization function.

    void cxpi_cfg_setup ( cxpi_cfg_t *cfg );
  • cxpi_init Initialization function.

    err_t cxpi_init ( cxpi_t *ctx, cxpi_cfg_t *cfg );

Example key functions :

  • cxpi_send_command Send command.

    void cxpi_send_command ( cxpi_t *ctx, char *command );
  • cxpi_set_pwm_pin_state Set PWM pin state function.

    void cxpi_set_pwm_pin_state ( cxpi_t *ctx, uint8_t pin_state );
  • cxpi_set_through_mode Set through mode function.

    void cxpi_set_through_mode ( cxpi_t *ctx );

Example Description

This is an example that demonstrates the use of the CXPI Click board.

The demo application is composed of two sections :

Application Init

Initializes UART driver. In addition to this module is placed inside transmitter/receiver working mode cappable of transmission/receive the data.


void application_init ( void ) {
    log_cfg_t log_cfg;  /**< Logger config object. */
    cxpi_cfg_t cxpi_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 );

    // Click initialization.

    cxpi_cfg_setup( &cxpi_cfg );
    CXPI_MAP_MIKROBUS( cxpi_cfg, MIKROBUS_1 );
    err_t init_flag  = cxpi_init( &cxpi, &cxpi_cfg );
    if ( UART_ERROR == init_flag ) {
        log_error( &logger, " Application Init Error. " );
        log_info( &logger, " Please, run program again... " );

        for ( ; ; );
    }
    log_info( &logger, " Application Task " );
    cxpi_set_through_mode( &cxpi );

#ifdef DEMO_APP_TRANSMITER
    log_printf( &logger, "------------------\r\n" );
    log_printf( &logger, "    Send data:    \r\n" );
    log_printf( &logger, "      MikroE      \r\n" );
    Delay_ms ( 1000 );
#endif

#ifdef DEMO_APP_RECEIVER 
    log_printf( &logger, "------------------\r\n" );
    log_printf( &logger, "   Receive data  \r\n" );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
#endif

    log_printf( &logger, "------------------\r\n" );
}

Application Task

Transmitter/Receiver task depend on uncommented code Receiver logging each received byte to the UART for data logging, while transmitted send messages every 5 seconds.


void application_task ( void ) {
#ifdef DEMO_APP_RECEIVER 
    cxpi_process( );
    if ( current_rsp_buf > 0 ) {
        log_printf( &logger, "%s", current_rsp_buf );
        cxpi_clear_current_rsp_buf( );
    }
#endif 

#ifdef DEMO_APP_TRANSMITER
    cxpi_send_command( &cxpi, &demo_message[ 0 ] );
    log_printf( &logger, " Sent data : %s",  &demo_message[ 0 ] );
    log_printf( &logger, "------------------\r\n" ); 
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
#endif
}

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.CXPI

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.


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