powermonitor2  2.1.0.0
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Power Monitor 2 Click

Power Monitoring 2 Click is a compact add-on board for precise power monitoring of connected load devices. This board features two INA219 12-bit I2C-output digital power monitors from Texas Instruments. This Click board™ monitors current and voltage on two separate power rails - 3.3V and 5V - of an onboard mikroBUS™ socket, providing real-time digital readings of the power consumption of added Click boards™. It supports high-speed I2C communication with configurable I2C addresses and operates at 3.3V and 5V logic levels, which makes it ideal for applications in power management, system diagnostics, and energy optimization in embedded systems.

Click Product page


Click library

  • Author : Stefan Filipovic
  • Date : Apr 2024.
  • Type : I2C type

Software Support

We provide a library for the Power Monitor 2 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 from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Library Description

This library contains API for Power Monitor 2 Click driver.

Standard key functions :

Example key functions :

Example Description

This example demonstrates the use of Power Monitor 2 Click by reading and displaying the power consumption at 3V3 and 5V of the connected Click board.

The demo application is composed of two sections :

Application Init

Initializes the driver and performs the Click default configuration.

void application_init ( void )
{
log_cfg_t log_cfg;
powermonitor2_cfg_t powermonitor2_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
powermonitor2_cfg_setup( &powermonitor2_cfg );
POWERMONITOR2_MAP_MIKROBUS( powermonitor2_cfg, MIKROBUS_1 );
if ( I2C_MASTER_ERROR == powermonitor2_init( &powermonitor2, &powermonitor2_cfg ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
if ( POWERMONITOR2_ERROR == powermonitor2_default_cfg ( &powermonitor2 ) )
{
log_error( &logger, " Default configuration." );
for ( ; ; );
}
log_info( &logger, " Application Task " );
}

Application Task

Reads the voltage, current, and power measurements from U2 and U3 sensors averaged from 20 samples and displays the results on the USB UART.

void application_task ( void )
{
powermonitor2_data_t pm_3v3, pm_5v;
powermonitor2_set_address ( &powermonitor2, powermonitor2.address_3v3 );
{
log_printf( &logger, " --- 3V3 Power Monitor ---\r\n" );
log_printf( &logger, " Voltage: %.3f V\r\n", pm_3v3.bus_v );
log_printf( &logger, " Current: %.3f A\r\n", pm_3v3.current );
log_printf( &logger, " Power: %.2f W\r\n", pm_3v3.power );
log_printf( &logger, " -------------------------\r\n" );
}
powermonitor2_set_address ( &powermonitor2, powermonitor2.address_5v );
{
log_printf( &logger, " ---- 5V Power Monitor ---\r\n" );
log_printf( &logger, " Voltage: %.3f V\r\n", pm_5v.bus_v );
log_printf( &logger, " Current: %.3f A\r\n", pm_5v.current );
log_printf( &logger, " Power: %.2f W\r\n", pm_5v.power );
log_printf( &logger, " -------------------------\r\n" );
}
Delay_ms ( 1000 );
}

The full application code, and ready to use projects can be installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Other Mikroe Libraries used in the example:

  • MikroSDK.Board
  • MikroSDK.Log
  • Click.PowerMonitor2

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. UART terminal is available in all MikroElektronika compilers.


POWERMONITOR2_ERROR
@ POWERMONITOR2_ERROR
Definition: powermonitor2.h:242
powermonitor2_data_t::bus_v
float bus_v
Definition: powermonitor2.h:197
powermonitor2_read_data_avg
err_t powermonitor2_read_data_avg(powermonitor2_t *ctx, uint16_t num_conv, powermonitor2_data_t *data_out)
Power Monitor 2 read data avg function.
powermonitor2_cfg_t
Power Monitor 2 Click configuration object.
Definition: powermonitor2.h:225
powermonitor2_init
err_t powermonitor2_init(powermonitor2_t *ctx, powermonitor2_cfg_t *cfg)
Power Monitor 2 initialization function.
powermonitor2_t
Power Monitor 2 Click context object.
Definition: powermonitor2.h:208
application_task
void application_task(void)
Definition: main.c:65
powermonitor2_data_t::current
float current
Definition: powermonitor2.h:198
powermonitor2_data_t::power
float power
Definition: powermonitor2.h:199
powermonitor2_read_data
err_t powermonitor2_read_data(powermonitor2_t *ctx, powermonitor2_data_t *data_out)
Power Monitor 2 read data function.
POWERMONITOR2_DEFAULT_NUM_CONV
#define POWERMONITOR2_DEFAULT_NUM_CONV
Definition: powermonitor2.h:155
POWERMONITOR2_MAP_MIKROBUS
#define POWERMONITOR2_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition: powermonitor2.h:183
POWERMONITOR2_OK
@ POWERMONITOR2_OK
Definition: powermonitor2.h:241
powermonitor2_default_cfg
err_t powermonitor2_default_cfg(powermonitor2_t *ctx)
Power Monitor 2 default configuration function.
application_init
void application_init(void)
Definition: main.c:29
powermonitor2_set_address
err_t powermonitor2_set_address(powermonitor2_t *ctx, uint8_t slave_address)
Power Monitor 2 set slave address function.
powermonitor2_cfg_setup
void powermonitor2_cfg_setup(powermonitor2_cfg_t *cfg)
Power Monitor 2 configuration object setup function.
powermonitor2_data_t
Power Monitor 2 Click data object.
Definition: powermonitor2.h:195