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mikroSDK Library

LLC SPI Click

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Author: MIKROE

Last Updated: 2024-10-31

Package Version: 2.1.0.14

mikroSDK Library: 2.0.0.0

Category: Port expander

Downloaded: 179 times

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License: MIT license  

The LLC SPI Click is a very useful Click board™ which can be utilized as the level converter for logic signals.

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  • mikroSDK Library 1.0.0.0
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mikroSDK Library Blog


LLC SPI Click

The LLC SPI Click is a very useful Click board™ which can be utilized as the level converter for logic signals.

llcspi_click.png

Click Product page


Click library

  • Author : MikroE Team
  • Date : Jan 2020.
  • Type : SPI type

Software Support

We provide a library for the llcspi 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 form compilers IDE(recommended way), or downloaded from our LibStock, or found on mikroE github account.

Library Description

This library contains API for llcspi Click driver.

Standard key functions :

  • Config Object Initialization function.

    void llcspi_cfg_setup ( llcspi_cfg_t *cfg );

  • Initialization function.

    LLCSPI_RETVAL llcspi_init ( llcspi_t ctx, llcspi_cfg_t cfg );

Example key functions :

  • LLC SPI write

    void llcspi_generic_write ( llcspi_t ctx, uint8_t p_buf, uint16_t n_bytes );

  • LLC SPI read

    void llcspi_generic_read ( llcspi_t ctx, uint8_t p_buf, uint16_t n_bytes );

  • LLC SPI transfer

    void llcspi_generic_transfer ( llcspi_t ctx, uint8_t wr_buf, uint16_t wr_len, uint8_t *rd_buf, uint16_t rd_len );

Examples Description

This application is converter for logic signals.

The demo application is composed of two sections :

Application Init

Initialization device init


void application_init ( void )
{
    log_cfg_t log_cfg;
    llcspi_cfg_t 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( log_cfg );
    log_init( &logger, &log_cfg );
    log_info( &logger, "---- Application Init ----" );

    //  Click initialization.

    llcspi_cfg_setup( &cfg );
    LLCSPI_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    llcspi_init( &llcspi, &cfg );
}

Application Task

Counter passes through the loop and logs the value of the counter on the bargraph display


void application_task ( void )
{
    uint16_t convert;
    uint8_t tmp[ 2 ];
    uint8_t cnt;

    // BarGraph display
    for ( cnt = 0; cnt <= 10; cnt++ )
    {
        convert  = ( uint16_t ) ( ( 1 << cnt ) - 1 );
        tmp[ 1 ] = ( convert & 0x00FF );
        tmp[ 0 ] = ( convert & 0xFF00 ) >> 8;

        llcspi_generic_write( &llcspi, tmp, 2 );

        Delay_ms ( 1000 );
    }
}  

Note

Connection between BarGraph and LLC-SPI is made through SPI interface. You can connect a BarGraph Click to LLC-SPI Click with the wires to make connection between Click boards. We use the BarGraph Click to demonstrate the functions of the LLC-SPI Click.

The full application code, and ready to use projects can be installed directly form compilers IDE(recommneded) or found on LibStock page or mikroE GitHub accaunt.

Other mikroE Libraries used in the example:

  • MikroSDK.Board
  • MikroSDK.Log
  • Click.Llcspi

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. 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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