moisture

---

Moisture Click

Moisture 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 : Jovan Stajkovic
• Date : nov 2019.
• Type : I2C type

Software Support

Example Description

The demo application displays relative moisture measurement using Moisture Click.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.Moisture

Example Key Functions

• moisture_cfg_setup Config Object Initialization function.

void moisture_cfg_setup ( moisture_cfg_t *cfg );

• moisture_init Initialization function.

err_t moisture_init ( moisture_t *ctx, moisture_cfg_t *cfg );

• moisture_default_cfg Click Default Configuration function.

void moisture_default_cfg ( moisture_t *ctx );

• moisture_get_data Measurement data function.

uint8_t moisture_get_data ( moisture_t *ctx );

• moisture_cfg Configure device function.

void  moisture_cfg ( moisture_t *ctx, uint16_t gain, uint16_t offset, uint16_t clk_div );

• moisture_soft_reset Soft reset function.

void moisture_soft_reset ( moisture_t *ctx );

Application Init

Initializes Driver and sets moisture gain, offset data and clock divider and performs calibration of the device. We advise you not to touch, or expose sensor to moisture during the calibration.

void application_init ( void )
{
    log_cfg_t log_cfg;
    moisture_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.

    moisture_cfg_setup( &cfg );
    MOISTURE_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    moisture_init( &moisture, &cfg );
    Delay_ms ( 100 );

    data_res = moisture_read_word( &moisture, MOISTURE_REG_DEVICE_ID );

    if ( ( data_res != MOISTURE_FDC2112_ID ) && ( data_res != MOISTURE_FDC2212_ID ) )
    {
        log_printf( &logger, "---- Comunication ERROR!!! ---- \r\n" );
        for ( ; ; );
    }
    else
    {
        log_printf( &logger, "---- Comunication OK!!! ---- \r\n" );
    }

    moisture_soft_reset( &moisture );
    moisture_default_cfg( &moisture );

    log_printf( &logger, " --- Calibration start --- \r\n" );
    moisture_cal( &moisture );
    Delay_ms ( 1000 );

    log_printf( &logger, " --- Calibration finishing --- \r\n" );
}

Application Task

The device measure moisture and displays data in percentage every 500ms.

void application_task ( void )
{
    moisture_data = moisture_get_data( &moisture  );
    log_printf( &logger, " Moisture data : %d \r\n", moisture_data );
    Delay_ms ( 500 );
}

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.

---