multimeter  2.0.0.0
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Multimeter click

<Multimeter click is a Click boardâ„¢ designed to measure voltage, current, resistance, and capacitance properties of the components, connected to the input terminals. Each property measurement is done on a separate terminal.>

click Product page


Click library

  • Author : MikroE Team
  • Date : Jan 2020.
  • Type : SPI type

Software Support

We provide a library for the Multimeter 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 Multimeter Click driver.

Standard key functions :

  • Config Object Initialization function.

    void multimeter_cfg_setup ( multimeter_cfg_t *cfg );

  • Initialization function.

    MULTIMETER_RETVAL multimeter_init ( multimeter_t *ctx, multimeter_cfg_t *cfg );

  • Click Default Configuration function.

    void multimeter_default_cfg ( multimeter_t *ctx );

Example key functions :

  • This function reads and returns resistance data.

    float multimeter_read_resistance ( multimeter_t *ctx );

  • This function reads and returns voltage data.

    float multimeter_read_voltage ( multimeter_t *ctx );

  • This function reads and returns current data.

    float multimeter_read_current ( multimeter_t *ctx );

Examples Description

This example showcases how to configure, initialize and use the Multimeter click. The

click measures resistance in Ohms, voltage in mVs, current in mAs and capacitance in nFs using a dual CMOS and quad CMOS op-amps, an ADC and other on board modules.

The demo application is composed of two sections :

Application Init

This function initializes and configures the logger and click modules. Additional

calibration of the measurement components is done in the default_cfg(...) function.

{
log_cfg_t log_cfg;
// Logger initialization.
LOG_MAP_USB_UART( log_cfg );
log_cfg.level = LOG_LEVEL_DEBUG;
log_cfg.baud = 9600;
log_init( &logger, &log_cfg );
log_info( &logger, "---- Application Init ----" );
// Click initialization.
MULTIMETER_MAP_MIKROBUS( cfg, MIKROBUS_1 );
multimeter_init( &multimeter, &cfg );
multimeter_default_cfg( &multimeter );
}

Application Task

This function measures and displays resistance, voltage, current and capacitance data.

It does so every second.

{
float resistance;
float voltage;
float current;
float capacitance;
resistance = multimeter_read_resistance( &multimeter );
log_printf( &logger, " * Resistance: %.3f Ohms * \r\n", resistance );
voltage = multimeter_read_voltage( &multimeter );
log_printf( &logger, " * Voltage: %.3f mV * \r\n", voltage );
current = multimeter_read_current( &multimeter );
log_printf( &logger, " * Current: %.3f mA * \r\n", current );
capacitance = multimeter_read_capacitance( &multimeter );
log_printf( &logger, " * Capacitance: %.3f nF * \r\n", capacitance );
log_printf( &logger, "------------------------\r\n" );
Delay_1sec( );
}

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.Multimeter

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.


multimeter_cfg_setup
void multimeter_cfg_setup(multimeter_cfg_t *cfg)
Config Object Initialization function.
application_init
void application_init()
Definition: main.c:36
multimeter_cfg_t
Click configuration structure definition.
Definition: multimeter.h:144
MULTIMETER_MAP_MIKROBUS
#define MULTIMETER_MAP_MIKROBUS(cfg, mikrobus)
Definition: multimeter.h:52
multimeter_init
MULTIMETER_RETVAL multimeter_init(multimeter_t *ctx, multimeter_cfg_t *cfg)
Initialization function.
multimeter_default_cfg
void multimeter_default_cfg(multimeter_t *ctx)
Click Default Configuration function.
application_task
void application_task()
Definition: main.c:57
multimeter_read_voltage
float multimeter_read_voltage(multimeter_t *ctx)
Read voltage function.
multimeter_read_current
float multimeter_read_current(multimeter_t *ctx)
Read current function.
multimeter_read_capacitance
float multimeter_read_capacitance(multimeter_t *ctx)
Read capacitance function.
multimeter_read_resistance
float multimeter_read_resistance(multimeter_t *ctx)
Read resistance function.