SolidSwitch 3 Click

SolidSwitch 3 Click is a compact add-on board that contains a load switching device. This board features the BD8LB600FS-C, an automotive eight-channel low-side switch from Rohm Semiconductor. Every switch is controlled via an SPI interface and includes an N-channel MOSFET that supports a maximum current of 1A. The BD8LB600FS-C also has built-in protection circuits, namely the overcurrent, the thermal shutdown, the open-load detection, and the voltage lock-out circuits. Moreover, this device also possesses a diagnostic output function during abnormal detection.

Click Product page

Click library

• Author : Stefan Filipovic
• Date : Dec 2021.
• Type : SPI type

Software Support

We provide a library for the SolidSwitch 3 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 SolidSwitch 3 Click driver.

Standard key functions :

• solidswitch3_cfg_setup Config Object Initialization function.

  void solidswitch3_cfg_setup ( solidswitch3_cfg_t *cfg );

• solidswitch3_init Initialization function.

  err_t solidswitch3_init ( solidswitch3_t *ctx, solidswitch3_cfg_t *cfg );

• solidswitch3_default_cfg Click Default Configuration function.

  err_t solidswitch3_default_cfg ( solidswitch3_t *ctx );

Example key functions :

• solidswitch3_enable_output This function enables the specified output channel.

  err_t solidswitch3_enable_output ( solidswitch3_t *ctx, uint8_t channel );

• solidswitch3_disable_output This function disables the specified output channel.

  err_t solidswitch3_disable_output ( solidswitch3_t *ctx, uint8_t channel );

• solidswitch3_reset This function resets the device by toggling the reset pin.

  void solidswitch3_reset ( solidswitch3_t *ctx );

Example Description

This example demonstrates the use of SolidSwitch 3 Click board by controlling the output state.

The demo application is composed of two sections :

Application Init

Initializes the driver and performs the Click default configuration.

void application_init ( void )
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    solidswitch3_cfg_t solidswitch3_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.
    solidswitch3_cfg_setup( &solidswitch3_cfg );
    SOLIDSWITCH3_MAP_MIKROBUS( solidswitch3_cfg, MIKROBUS_1 );
    if ( SPI_MASTER_ERROR == solidswitch3_init( &solidswitch3, &solidswitch3_cfg ) )
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
    SET_SPI_DATA_SAMPLE_EDGE;

    if ( SOLIDSWITCH3_ERROR == solidswitch3_default_cfg ( &solidswitch3 ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }

    log_info( &logger, " Application Task " );
}

Application Task

Enables all outputs one by one in the span of 8 seconds, and after that disables all outputs for 3 seconds. Accordingly, the outputs status will be displayed on the USB UART.

void application_task ( void )
{
    for ( uint16_t cnt = SOLIDSWITCH3_CH_OUT1; cnt <= SOLIDSWITCH3_CH_OUT8; cnt <<= 1 )
    {
        if ( SOLIDSWITCH3_OK == solidswitch3_enable_output ( &solidswitch3, cnt ) )
        {
            solidswitch3_display_enabled_channels( &solidswitch3 );
            Delay_ms ( 1000 );
        }
    }

    if ( SOLIDSWITCH3_OK == solidswitch3_disable_output ( &solidswitch3, SOLIDSWITCH3_ALL_CHANNELS ) )
    {
        solidswitch3_display_enabled_channels( &solidswitch3 );
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
        Delay_ms ( 1000 );
    }
}

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.SolidSwitch3

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.