loadcell2  2.0.0.0
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Load Cell 2 click

Load cell 2 Click is a weight measurement click which utilizes a load cell element, in order to precisely measure the weight of an object. The Load Cell 2 Click can be used with the strain gauge type of load cells with external differential reference voltage range from 0.1V to 5V.

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Click library

  • Author : Nenad Filipovic
  • Date : Jan 2020.
  • Type : I2C type

Software Support

We provide a library for the LoadCell2 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 LoadCell2 Click driver.

Standard key functions :

  • Config Object Initialization function.

    void loadcell2_cfg_setup ( loadcell2_cfg_t *cfg );

  • Initialization function.

    LOADCELL2_RETVAL loadcell2_init ( loadcell2_t *ctx, loadcell2_cfg_t *cfg );

  • Click Default Configuration function.

    void loadcell2_default_cfg ( loadcell2_t *ctx );

Example key functions :

Examples Description

Load Cell 2 click is a weight measurement click which utilizes a load cell element, in order to precisely measure the weight of an object.

The demo application is composed of two sections :

Application Init

Initializes I2C driver and performs the device reset, and performs the device reset, set power on and default configuration. Sets tare the scale, calibrate scale and start measurements.

void application_init ( void )
{
log_cfg_t log_cfg;
// Logger initialization.
log_cfg.level = LOG_LEVEL_DEBUG;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_printf( &logger, " - Application Init - \r\n" );
// Click initialization.
LOADCELL2_MAP_MIKROBUS( cfg, MIKROBUS_1 );
loadcell2_init( &loadcell2, &cfg );
log_printf( &logger, "-------------------------\r\n");
log_printf( &logger, " Load cell click \r\n");
log_printf( &logger, "-------------------------\r\n");
Delay_ms( 100 );
log_printf( &logger, "-------------------------\r\n");
log_printf( &logger, " Reset all registers \r\n");
loadcell2_reset( &loadcell2 );
Delay_ms( 100 );
log_printf( &logger, "-------------------------\r\n");
log_printf( &logger, " Power On \r\n");
loadcell2_power_on( &loadcell2 );
Delay_ms( 100 );
log_printf( &logger, "-------------------------\r\n");
log_printf( &logger, " Set default config. \r\n");
loadcell2_default_cfg( &loadcell2 );
Delay_ms( 100 );
log_printf( &logger, "-------------------------\r\n");
log_printf( &logger, " Calibrate AFE \r\n");
loadcell2_calibrate_afe( &loadcell2 );
Delay_ms( 1000 );
log_printf( &logger, "-------------------------\r\n");
log_printf( &logger, " Tare the scale : \r\n");
log_printf( &logger, "- - - - - - - - - - - - -\r\n");
log_printf( &logger, " >> Remove all object << \r\n");
log_printf( &logger, "- - - - - - - - - - - - -\r\n");
log_printf( &logger, " In the following 10 sec \r\n");
log_printf( &logger, " please remove all object\r\n");
log_printf( &logger, " from the scale. \r\n");
Delay_ms( 10000 );
log_printf( &logger, "-------------------------\r\n");
log_printf( &logger, " Start tare scales \r\n");
loadcell2_tare ( &loadcell2, &cell_data );
Delay_ms( 500 );
log_printf( &logger, "-------------------------\r\n");
log_printf( &logger, " Tarring is complete \r\n");
log_printf( &logger, "-------------------------\r\n");
log_printf( &logger, " Calibrate Scale : \r\n");
log_printf( &logger, "- - - - - - - - - - - - -\r\n");
log_printf( &logger, " >>> Load etalon <<< \r\n");
log_printf( &logger, "- - - - - - - - - - - - -\r\n");
log_printf( &logger, " In the following 10 sec \r\n");
log_printf( &logger, "place 1000g weight etalon\r\n");
log_printf( &logger, " on the scale for \r\n");
log_printf( &logger, " calibration purpose. \r\n");
Delay_ms( 10000 );
log_printf( &logger, "-------------------------\r\n");
log_printf( &logger, " Start calibration \r\n");
{
log_printf( &logger, "-------------------------\r\n");
log_printf( &logger, " Calibration Done \r\n");
log_printf( &logger, "- - - - - - - - - - - - -\r\n");
log_printf( &logger, " >>> Remove etalon <<< \r\n");
log_printf( &logger, "- - - - - - - - - - - - -\r\n");
log_printf( &logger, " In the following 10 sec \r\n");
log_printf( &logger, " remove 1000g weight \r\n");
log_printf( &logger, " etalon on the scale. \r\n");
Delay_ms( 10000 );
}
else
{
log_printf( &logger, "-------------------------\r\n");
log_printf( &logger, " Calibration Error \r\n");
for ( ; ; );
}
log_printf( &logger, "-------------------------\r\n");
log_printf( &logger, " Start measurements : \r\n");
log_printf( &logger, "-------------------------\r\n");
}

Application Task

This is an example which demonstrates the use of Load Cell 2 Click board. Display the measurement of scales in grams [g]. Results are being sent to the Usart Terminal where you can track their changes. All data logs write on USB uart changes for every 1 sec.

void application_task ( void )
{
weight_val = loadcell2_get_weight( &loadcell2, &cell_data );
log_printf(&logger, " Weight : %5.2f g\r\n", weight_val );
Delay_ms( 1000 );
}

Note

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.LoadCell2

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.


loadcell2_cfg_t
Click configuration structure definition.
Definition: loadcell2.h:239
loadcell2_default_cfg
void loadcell2_default_cfg(loadcell2_t *ctx)
Click Default Configuration function.
loadcell2_reset
void loadcell2_reset(loadcell2_t *ctx)
Reset function.
loadcell2_calibration
uint8_t loadcell2_calibration(loadcell2_t *ctx, uint16_t cal_val, loadcell2_data_t *cell_data)
Calibration function.
LOADCELL2_WEIGHT_1000G
#define LOADCELL2_WEIGHT_1000G
Definition: loadcell2.h:196
application_task
void application_task(void)
Definition: main.c:144
loadcell2_tare
void loadcell2_tare(loadcell2_t *ctx, loadcell2_data_t *cell_data)
Tare function.
loadcell2_power_on
LOADCELL2_RETVAL loadcell2_power_on(loadcell2_t *ctx)
Power On function.
loadcell2_init
LOADCELL2_RETVAL loadcell2_init(loadcell2_t *ctx, loadcell2_cfg_t *cfg)
Initialization function.
application_init
void application_init(void)
Definition: main.c:44
loadcell2_cfg_setup
void loadcell2_cfg_setup(loadcell2_cfg_t *cfg)
Config Object Initialization function.
LOADCELL2_GET_RESULT_OK
#define LOADCELL2_GET_RESULT_OK
Definition: loadcell2.h:187
loadcell2_calibrate_afe
void loadcell2_calibrate_afe(loadcell2_t *ctx)
Calibrate analog front end of system function.
LOADCELL2_MAP_MIKROBUS
#define LOADCELL2_MAP_MIKROBUS(cfg, mikrobus)
Definition: loadcell2.h:51
loadcell2_get_weight
float loadcell2_get_weight(loadcell2_t *ctx, loadcell2_data_t *cell_data)
Get weight function.