analogmux

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Analog MUX Click

Analog MUX 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 : Jun 2020.
• Type : ADC type

Software Support

Example Description

This example showcases how to initialize, configure and use the Analog MUX Click module. The Click switches one of the 16 inputs to output so the adc value of that input can be read on the COM (AN) pin. The RST, PWM, CS and INT are used as control output pins.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.AnalogMUX

Example Key Functions

• analogmux_cfg_setup Config Object Initialization function.

void analogmux_cfg_setup ( analogmux_cfg_t *cfg );

• analogmux_init Initialization function.

err_t analogmux_init ( analogmux_t *ctx, analogmux_cfg_t *cfg );

• analogmux_get_voltage Generic read voltage function.

float analogmux_get_voltage ( float adc_val, uint16_t vref, uint16_t rez );

• analogmux_set_channel This function sets the active channel on the MUX.

void analogmux_set_channel ( analogmux_t *ctx, uint8_t cfg );

Application Init

This function initializes and configures the logger and Click modules.

void application_init ( void )
{
    log_cfg_t log_cfg;
    analogmux_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 );
    Delay_100ms( );
    log_info( &logger, "---- Application Init ----" );

    //  Click initialization.

    analogmux_cfg_setup( &cfg );
    ANALOGMUX_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    analogmux_init( &analogmux, &cfg );

    analogmux_set_channel( &analogmux, ANALOGMUX_CHANNEL_0 );
    log_printf( &logger, " Channel 0 enabled\r\n" );
    log_printf( &logger, " -------------------\r\n" );
}

Application Task

This function reads ADC value and voltage from channel 0 (AN0) and shows the results on the USB UART every 2 seconds.

void application_task ( void )
{
    uint16_t tmp;
    float val;

    tmp = analogmux_generic_read( &analogmux );
    
    log_printf( &logger, " ADC value : %u\r\n", tmp );

    val = analogmux_generic_read_voltage( &analogmux );

    log_printf( &logger, " Voltage: %.3f mV\r\n", val );
    log_printf( &logger, " -------------------\r\n" );

    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
}

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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