expand9

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Expand 9 Click

Expand 9 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 : Nenad Filipovic
• Date : Aug 2021.
• Type : I2C type

Software Support

Example Description

This is an example that demonstrates the use of the Expand 9 Click board™. The library initializes and defines the I2C bus drivers to write and read data from registers.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.Expand9

Example Key Functions

• expand9_cfg_setup Config Object Initialization function.

void expand9_cfg_setup ( expand9_cfg_t *cfg );

• expand9_init Initialization function.

err_t expand9_init ( expand9_t *ctx, expand9_cfg_t *cfg );

• expand9_default_cfg Click Default Configuration function.

err_t expand9_default_cfg ( expand9_t *ctx );

• expand9_set_ch_output_state Expand 9 set channel output state function.

err_t expand9_set_ch_output_state ( expand9_t *ctx, uint8_t ch_pos, expand9_ch_state_value_t ch_state );

• expand9_led_driver_config Expand 9 LED driver configuration function.

err_t expand9_led_driver_config ( expand9_t *ctx, uint8_t ch_pos, uint8_t freq_div, uint8_t lin_log );

• expand9_soft_reset Expand 9 software reset function.

err_t expand9_soft_reset ( expand9_t *ctx );

Application Init

The initialization of I2C module, log UART, and additional pins. After driver initialization the app set default settings.

void application_init ( void ) 
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    expand9_cfg_t expand9_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.
    expand9_cfg_setup( &expand9_cfg );
    EXPAND9_MAP_MIKROBUS( expand9_cfg, MIKROBUS_1 );
    err_t init_flag = expand9_init( &expand9, &expand9_cfg );
    if ( I2C_MASTER_ERROR == init_flag ) 
    {
        log_error( &logger, " Application Init Error. " );
        log_info( &logger, " Please, run program again... " );

        for ( ; ; );
    }

    expand9_default_cfg ( &expand9 );
    log_info( &logger, " Application Task " );
    Delay_ms ( 100 );
}

Application Task

his is an example that demonstrates the use of the Expand 9 Click board™. This example shows the capabilities of the Expand 9 Click by toggling each of 16 available channels. Results are being sent to the Usart Terminal where you can track their changes.

void application_task ( void ) 
{   
    expand9_soft_reset( &expand9 );
    Delay_ms ( 100 );
    
    for ( uint8_t cnt = 0; cnt < 16; cnt++ )
    {
        expand9_set_ch_output_state( &expand9, cnt, CH_OUTPUT_ON );
        Delay_ms ( 100 );
        expand9_set_ch_output_state( &expand9, cnt, CH_OUTPUT_OFF );
        Delay_ms ( 100 );
    }
    
    for ( uint8_t cnt = 15; cnt > 0; cnt-- )
    {
        expand9_set_ch_output_state( &expand9, cnt, CH_OUTPUT_ON );
        Delay_ms ( 100 );
        expand9_set_ch_output_state( &expand9, cnt, CH_OUTPUT_OFF );
        Delay_ms ( 100 );
    }
    
    expand9_soft_reset( &expand9 );
    Delay_ms ( 100 );
    
    for ( uint8_t cnt = 0; cnt < 16; cnt++ )
    {
        expand9_led_driver_config( &expand9, cnt, EXPAND9_FREQ_DIV_1, EXPAND9_LED_MODE_LINEAR );
        expand9_set_intensity( &expand9, cnt, 10 );
        Delay_ms ( 100 );
        expand9_led_driver_config( &expand9, cnt, EXPAND9_FREQ_DIV_1, EXPAND9_LED_MODE_LINEAR );
        expand9_set_intensity( &expand9, cnt, 200 );
        Delay_ms ( 100 );
    }
    
    for ( uint8_t cnt = 15; cnt > 0; cnt-- )
    {
        expand9_led_driver_config( &expand9, cnt, EXPAND9_FREQ_DIV_1, EXPAND9_LED_MODE_LINEAR );
        expand9_set_intensity( &expand9, cnt, 200 );
        Delay_ms ( 100 );
        expand9_led_driver_config( &expand9, cnt, EXPAND9_FREQ_DIV_1, EXPAND9_LED_MODE_LINEAR );
        expand9_set_intensity( &expand9, cnt, 10 );
        Delay_ms ( 100 );
    }
}

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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