pir

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PIR Click

PIR 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 : jan 2020.
• Type : I2C type

Software Support

Example Description

This application which generates a voltage when exposed to infrared radiation.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.Pir

Example Key Functions

• pir_cfg_setup Config Object Initialization function.

void pir_cfg_setup ( pir_cfg_t *cfg );

• pir_init Initialization function.

err_t pir_init ( pir_t *ctx, pir_cfg_t *cfg );

• pir_get_adc Reading 12bit ADC value.

uint16_t pir_get_adc ( pir_t *ctx );

• pir_reg_read Reading register.

uint16_t pir_reg_read ( pir_t *ctx );

• pir_get_mili_volt Reading ADC data in mili Volts.

float pir_get_mili_volt ( pir_t *ctx, uint16_t ref_voltage );

Application Init

Initializes device.

void application_init ( void )
{
    log_cfg_t log_cfg;
    pir_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.

    pir_cfg_setup( &cfg );
    PIR_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    pir_init( &pir, &cfg );
}

Application Task

Reads ADC data, converts it to miliVolts and logs scaled value in miliVolts.

void application_task ( void )
{
    uint16_t adc_val;
    float map_out;

    adc_val = pir_get_adc( &pir );
    map_out = pir_scale_results( &pir, adc_val, 0, 3303 );
    
    log_printf( &logger, " Voltage: %.2f\r\n", map_out);
   
    log_printf( &logger, " miliVolts \r\n" );
    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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