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mikroSDK Library

Pac1934 Click

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Author: MIKROE

Last Updated: 2024-10-31

Package Version: 2.1.0.14

mikroSDK Library: 2.0.0.0

Category: Measurements

Downloaded: 170 times

Not followed.

License: MIT license  

PAC1934 Click carries the PAC1934 four channel DC power/energy monitor from Microchip. The Click is designed to run on either 3.3V or 5V power supply. It communicates with the target microcontroller over an I2C interface.

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mikroSDK Library Blog


Pac1934 Click

PAC1934 Click carries the PAC1934 four channel DC power/energy monitor from Microchip. The Click is designed to run on either 3.3V or 5V power supply. It communicates with the target microcontroller over an I2C interface.

pac1934_click.png

Click Product page


Click library

  • Author : MikroE Team
  • Date : jan 2020.
  • Type : I2C type

Software Support

We provide a library for the Pac1934 Click as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.

Package can be downloaded/installed directly form compilers IDE(recommended way), or downloaded from our LibStock, or found on mikroE github account.

Library Description

This library contains API for Pac1934 Click driver.

Standard key functions :

  • Config Object Initialization function.

    void pac1934_cfg_setup ( pac1934_cfg_t *cfg );

  • Initialization function.

    PAC1934_RETVAL pac1934_init ( pac1934_t ctx, pac1934_cfg_t cfg );

Example key functions :

  • Write one byte function.

    void pac1934_write_byte ( pac1934_t *ctx, uint8_t wr_addr, uint8_t wr_data );

  • Read one byte function.

    uint8_t pac1934_read_byte ( pac1934_t *ctx, uint8_t rd_addr );

  • Send command function.

    void pac1934_send_command ( pac1934_t *ctx, uint8_t wr_cmd );

Examples Description

This application measures the voltage.

The demo application is composed of two sections :

Application Init

Initalizes device, enables the device and makes an initial log.


void application_init ( void )
{
    log_cfg_t log_cfg;
    pac1934_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.

    pac1934_cfg_setup( &cfg );
    PAC1934_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    pac1934_init( &pac1934, &cfg );
}

Application Task

This is an example that shows the most important functions that PAC1934 Click has, it mesures voltage, current, power and energy.


void application_task ( void )
{
    float read_value;

    pac1934_dev_reset( &pac1934 );
    pac1934_write_byte( &pac1934, PAC1934_CHANNEL_DIS, PAC1934_CHANNEL_DIS_ALL_CHA );
    pac1934_write_byte( &pac1934, PAC1934_CTRL_REG, PAC1934_CTRL_SAMPLE_RATE_8 | PAC1934_CTRL_SINGLE_SHOT_MODE );
    Delay_ms ( 100 );
    pac1934_send_command( &pac1934, PAC1934_REFRESH_CMD );

    read_value = pac1934_measure_voltage( &pac1934, 1 );
    log_printf( &logger, "Voltage : %.2f V\r\n", read_value );

    read_value = pac1934_measure_current( &pac1934, 1 );
    log_printf( &logger, "Amperage :  %.2f mA\r\n", read_value );

    read_value = pac1934_measure_power( &pac1934, 1 );
    log_printf( &logger, "Power : %.2f W\r\n", read_value );

    read_value = pac1934_measure_energy( &pac1934, 1, 8 );
    log_printf( &logger, "Energy :  %.2f J \r\n", read_value );
    log_printf( &logger, "--------------------- \r\n" );
    Delay_ms ( 1000 );
}  

The full application code, and ready to use projects can be installed directly form compilers IDE(recommneded) or found on LibStock page or mikroE GitHub accaunt.

Other mikroE Libraries used in the example:

  • MikroSDK.Board
  • MikroSDK.Log
  • Click.Pac1934

Additional notes and informations

Depending on the development board you are using, you may need USB UART Click, USB UART 2 Click or RS232 Click to connect to your PC, for development systems with no UART to USB interface available on the board. The terminal available in all Mikroelektronika compilers, or any other terminal application of your choice, can be used to read the message.


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