iso9141

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ISO 9141 Click

ISO 9141 Click demo application is developed using the NECTO Studio, ensuring compatibility with mikroSDK's open-source libraries and tools. Designed for plug-and-play implementation and testing, the demo is fully compatible with all development, starter, and mikromedia boards featuring a mikroBUS™ socket.

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Click Library

• Author : MikroE Team
• Date : Aug 2021.
• Type : UART type

Software Support

Example Description

This example demonstrates the use of an ISO 9141 Click board by showing the communication between the two Click boards.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.ISO9141

Example Key Functions

• iso9141_cfg_setup Config Object Initialization function.

void iso9141_cfg_setup ( iso9141_cfg_t *cfg );

• iso9141_init Initialization function.

err_t iso9141_init ( iso9141_t *ctx, iso9141_cfg_t *cfg );

• iso9141_generic_write This function writes a desired number of data bytes by using UART serial interface.

err_t iso9141_generic_write ( iso9141_t *ctx, uint8_t *data_buf, uint16_t len );

• iso9141_generic_read This function reads a desired number of data bytes by using UART serial interface.

err_t iso9141_generic_read ( iso9141_t *ctx, uint8_t *data_buf, uint16_t max_len );

Application Init

Initalizes device and makes an initial log.

void application_init ( void )
{
    iso9141_cfg_t iso9141_cfg;
    log_cfg_t logger_cfg;

    /** 
     * 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( logger_cfg );
    log_init( &logger, &logger_cfg );
    log_info( &logger, " Application Init " );
    
    // Click initialization.
    iso9141_cfg_setup( &iso9141_cfg );
    ISO9141_MAP_MIKROBUS( iso9141_cfg, MIKROBUS_1 );
    if ( UART_ERROR == iso9141_init( &iso9141, &iso9141_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
#ifdef DEMO_APP_TRANSMITTER
    log_printf( &logger, " Application Mode: Transmitter\r\n" );
#else
    log_printf( &logger, " Application Mode: Receiver\r\n" );
#endif
    log_info( &logger, " Application Task " );
}

Application Task

Depending on the selected application mode, it reads all the received data or sends the desired text message once per second.

void application_task ( void )
{
#ifdef DEMO_APP_TRANSMITTER
    iso9141_generic_write( &iso9141, DEMO_TEXT_MESSAGE, strlen( DEMO_TEXT_MESSAGE ) );
    log_printf( &logger, "%s", ( char * ) DEMO_TEXT_MESSAGE );
    Delay_ms ( 1000 ); 
#else
    uint8_t rx_byte = 0;
    if ( 1 == iso9141_generic_read( &iso9141, &rx_byte, 1 ) )
    {
       log_printf( &logger, "%c", rx_byte );
    }
#endif
}

Application Output

This Click board can be interfaced and monitored in two ways:

• Application Output - Use the "Application Output" window in Debug mode for real-time data monitoring. Set it up properly by following this tutorial.
• UART Terminal - Monitor data via the UART Terminal using a USB to UART converter. For detailed instructions, check out this tutorial.

Additional Notes and Information

The complete application code and a ready-to-use project are available through the NECTO Studio Package Manager for direct installation in the NECTO Studio. The application code can also be found on the MIKROE GitHub account.

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