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mikroSDK Library

ISO 9141 click

Rating:

5

Author: MIKROE

Last Updated: 2020-10-09

Package Version: 1.0.0.0

mikroSDK Library: 1.0.0.0

Category: CAN

Downloaded: 2532 times

Not followed.

License: MIT license  

ISO 9141 Click is a compact add-on board that contains a monolithic bus driver with ISO 9141 interface. This board features the L9637, a monolithic integrated circuit containing standard ISO 9141 compatible interface functions from ST Microelectronics.

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  • mikroSDK Library 2.0.0.0
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mikroSDK Library Blog

ISO 9141 Click

ISO 9141 Click

Native view of the ISO 9141 Click board.

View full image
ISO 9141 Click

ISO 9141 Click

Front and back view of the ISO 9141 Click board.

View full image

Library Description

The library covers all the necessary functions to control ISO 9141 click board. Library performs a standard UART interface communication.

Key functions:

  • void iso9141_write_byte ( uint8_t input ) - Write Single Byte.
  • uint8_t iso9141_read_byte ( void ) - Read Single Byte.
  • uint8_t iso9141_byte_ready ( void ) - Check for new byte received.

Examples description

The application is composed of three sections :

  • System Initialization - Initializes UART used for communication and another UART bus used for data logging.
  • Application Initialization - Initializes UART driver. In addition to this module is placed inside transmitter working mode cappable of transmission of the data.
  • Application Task - (code snippet) - This is an example that demonstrates the use of ISO 9141 Click board. Transmitter/Receiver task depend on uncommented code Receiver logging each received byte to the UART for data logging, while transmitted send messages every 2 seconds.
void application_task ( )
{
    char tmp;
    uint8_t drdy_flag;

    if ( app_mode == APP_MODE_RECEIVER )
    {
        // RECEIVER - UART polling

        drdy_flag = iso9141_byte_ready( );

        if ( 1 == drdy_flag )
        {
            tmp = iso9141_read_byte( );
            mikrobus_logWrite( &tmp, _LOG_BYTE );
        }
    }
    else
    {
        // TRANSMITER - TX each 2 sec

        for ( tmp = 0; tmp < 9; tmp++ )
        {
            iso9141_write_byte( demo_message_data[ tmp ] );
            Delay_ms( 10 );
        }
        
        mikrobus_logWrite( "   Message Sent!    ", _LOG_LINE );
        mikrobus_logWrite( "-------------------", _LOG_LINE );
        Delay_ms( 2000 );
    }
}

Other mikroE Libraries used in the example:

  • UART

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.

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