pac1934  2.0.0.0
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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.

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;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, "---- Application Init ----" );
// Click initialization.
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 );
Delay_ms ( 100 );
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.


pac1934_init
PAC1934_RETVAL pac1934_init(pac1934_t *ctx, pac1934_cfg_t *cfg)
Initialization function.
pac1934_write_byte
void pac1934_write_byte(pac1934_t *ctx, uint8_t wr_addr, uint8_t wr_data)
Write one byte function.
PAC1934_REFRESH_CMD
#define PAC1934_REFRESH_CMD
Definition: pac1934.h:94
pac1934_send_command
void pac1934_send_command(pac1934_t *ctx, uint8_t wr_cmd)
Send Command.
pac1934_cfg_t
Click configuration structure definition.
Definition: pac1934.h:312
PAC1934_CHANNEL_DIS
#define PAC1934_CHANNEL_DIS
Definition: pac1934.h:181
application_task
void application_task(void)
Definition: main.c:58
PAC1934_CHANNEL_DIS_ALL_CHA
#define PAC1934_CHANNEL_DIS_ALL_CHA
Definition: pac1934.h:182
PAC1934_CTRL_SAMPLE_RATE_8
#define PAC1934_CTRL_SAMPLE_RATE_8
Definition: pac1934.h:103
PAC1934_CTRL_REG
#define PAC1934_CTRL_REG
Definition: pac1934.h:101
PAC1934_MAP_MIKROBUS
#define PAC1934_MAP_MIKROBUS(cfg, mikrobus)
Definition: pac1934.h:66
pac1934_cfg_setup
void pac1934_cfg_setup(pac1934_cfg_t *cfg)
Config Object Initialization function.
pac1934_measure_power
float pac1934_measure_power(pac1934_t *ctx, uint8_t channel)
Measure Power function.
pac1934_measure_current
float pac1934_measure_current(pac1934_t *ctx, uint8_t channel)
Measure Current function.
pac1934_dev_reset
void pac1934_dev_reset(pac1934_t *ctx)
Reset device function.
application_init
void application_init(void)
Definition: main.c:33
pac1934_measure_voltage
float pac1934_measure_voltage(pac1934_t *ctx, uint8_t channel)
Measure Voltage function.
pac1934_measure_energy
float pac1934_measure_energy(pac1934_t *ctx, uint8_t chann, uint16_t samp_rate)
Measure Energy function.
PAC1934_CTRL_SINGLE_SHOT_MODE
#define PAC1934_CTRL_SINGLE_SHOT_MODE
Definition: pac1934.h:107