uart1wire

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UART 1-Wire Click

UART 1-Wire 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 : UART type

Software Support

Example Description

This example reads and processes data from UART 1-Wire Clicks.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.UART1Wire

Example Key Functions

• uart1wire_cfg_setup Config Object Initialization function.

void uart1wire_cfg_setup ( uart1wire_cfg_t *cfg );

• uart1wire_init Initialization function.

err_t uart1wire_init ( uart1wire_t *ctx, uart1wire_cfg_t *cfg );

• uart1wire_write_command This function sends an 8-bit command to the Click module.

void uart1wire_write_command ( uart1wire_t *ctx, uint8_t cmd );

• uart1wire_read_temperature This function reads the temperature from DALLAS one wire temperature sensors.

int8_t uart1wire_read_temperature ( uart1wire_t *ctx, float *temperature, uint8_t resolution );

• uart1wire_reset This function sends a reset pulse signal.

void uart1wire_reset ( uart1wire_t *ctx );

Application Init

Initializes the driver and logger.

void application_init ( void )
{
    log_cfg_t log_cfg;
    uart1wire_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.

    uart1wire_cfg_setup( &cfg );
    UART1WIRE_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    uart1wire_init( &uart1wire, &cfg );
    
    Delay_ms ( 100 );
}

Application Task

Reads the temperature data from DALLAS temperature sensors and logs the results on the USB UART every second.

void application_task ( void )
{
    float temp_f;
    uint8_t res_flag;
    
    res_flag = uart1wire_read_temperature ( &uart1wire, &temp_f, UART1WIRE_TEMP_SENSOR_RESOLUTION_9BIT );
    if ( res_flag == UART1WIRE_OK )
    {
        log_printf( &logger, " * Temperature:     %.2f C\r\n", temp_f );
        log_printf( &logger, "------------------------------\r\n" );
        Delay_ms ( 1000 );
    }
}

Note

Connect only DQ and GND pins to the UART 1-Wire Click connector.

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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