Skip to content

Latest commit

 

History

History
141 lines (106 loc) · 4.45 KB

README.md

File metadata and controls

141 lines (106 loc) · 4.45 KB

Analog MUX 4 Click

Analog MUX 4 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.

Click Library

  • Author : Stefan Filipovic
  • Date : Aug 2021.
  • Type : ADC type

Software Support

Example Description

This example demonstrates the use of Analog MUX 4 Click board.

Example Libraries

  • MikroSDK.Board
  • MikroSDK.Log
  • Click.AnalogMUX4

Example Key Functions

  • analogmux4_cfg_setup Config Object Initialization function.
void analogmux4_cfg_setup ( analogmux4_cfg_t *cfg );
  • analogmux4_init Initialization function.
err_t analogmux4_init ( analogmux4_t *ctx, analogmux4_cfg_t *cfg );
  • analogmux4_enable_input This function enables analog inputs.
void analogmux4_enable_input ( analogmux4_t *ctx )
  • analogmux4_read_an_pin_voltage This function reads results of AD conversion of the AN pin and converts them to proportional voltage level.
err_t analogmux4_read_an_pin_voltage ( analogmux4_t *ctx, float *data_out );
  • analogmux4_set_input_channel This function sets the analog input channel.
void analogmux4_set_input_channel ( analogmux4_t *ctx, uint8_t channel );

Application Init

Initializes the driver and enables the analog inputs.

void application_init ( void )
{
    log_cfg_t log_cfg;                /**< Logger config object. */
    analogmux4_cfg_t analogmux4_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.
    analogmux4_cfg_setup( &analogmux4_cfg );
    ANALOGMUX4_MAP_MIKROBUS( analogmux4_cfg, MIKROBUS_1 );
    if ( ADC_ERROR == analogmux4_init( &analogmux4, &analogmux4_cfg ) )
    {
        log_error( &logger, " Application Init Error. " );
        log_info( &logger, " Please, run program again... " );

        for ( ; ; );
    }
    
    analogmux4_enable_input ( &analogmux4 );
    log_info( &logger, " Application Task " );
}

Application Task

Reads and displays the voltage of all channels on the USB UART approximately once per second.

void application_task ( void )
{
    float analogmux4_an_voltage = 0;
    
    for ( uint8_t cnt = ANALOGMUX4_CHANNEL_0; cnt <= ANALOGMUX4_CHANNEL_7; cnt++ )
    {
        analogmux4_set_input_channel ( &analogmux4, cnt );
        if ( ADC_ERROR != analogmux4_read_an_pin_voltage ( &analogmux4, &analogmux4_an_voltage ) ) 
        {
            log_printf( &logger, " AN%u voltage : %.3f V\r\n", ( uint16_t ) cnt, analogmux4_an_voltage );
        }
    }
    log_printf( &logger, "\r\n" );
    Delay_ms ( 1000 );
}

Note

The channel's voltage will "float" when the voltage source is not connected to it.

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.