loadcell4  2.0.0.0
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Load Cell 4 click

Load Cell 4 Click is a compact add-on board that contains a resistive sensor signal conditioner with a fast power-up data output response. This board features the ZSC31014, a CMOS integrated circuit for highly accurate amplification and analog-to-digital conversion of differential and half-bridge input signals from Renesas.

click Product page


Click library

  • Author : Stefan Ilic
  • Date : Jul 2021.
  • Type : I2C type

Software Support

We provide a library for the LoadCell4 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 LoadCell4 Click driver.

Standard key functions :

Example key functions :

Example Description

This is an example that demonstrates the use of the Load Cell 4 click board.

The demo application is composed of two sections :

Application Init

Initializes I2C driver and performs the power on. Sets tare the scale, calibrate scale and start measurements.

void application_init ( void ) {
log_cfg_t log_cfg;
loadcell4_cfg_t loadcell4_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
loadcell4_cfg_setup( &loadcell4_cfg );
LOADCELL4_MAP_MIKROBUS( loadcell4_cfg, MIKROBUS_1 );
err_t init_flag = loadcell4_init( &loadcell4, &loadcell4_cfg );
if ( I2C_MASTER_ERROR == init_flag ) {
log_error( &logger, " Application Init Error. " );
log_info( &logger, " Please, run program again... " );
for ( ; ; );
}
loadcell4_default_cfg ( &loadcell4 );
Delay_ms( 500 );
log_printf( &logger, "-------------------------\r\n" );
log_printf( &logger, " ~~~ STEP 1 ~~~ \r\n" );
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" );
loadcell4_tare( &loadcell4, &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, " ~~~ STEP 2 ~~~ \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 100 g 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" );
if ( loadcell4_calibration( &loadcell4, LOADCELL4_WEIGHT_100G, &cell_data ) == LOADCELL4_OK ) {
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 100 g 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

The Load Cell 4 click board can be used to measure weight, shows 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 4 sec.

void application_task ( void ) {
weight_val = loadcell4_get_weight( &loadcell4, &cell_data );
log_printf( &logger, " Weight : %.2f g \r\n", weight_val );
Delay_ms( 100 );
}

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.LoadCell4

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.


loadcell4_data_t
Load Cell 4 Click data object.
Definition: loadcell4.h:216
loadcell4_cfg_t
Load Cell 4 Click configuration object.
Definition: loadcell4.h:199
LOADCELL4_OK
@ LOADCELL4_OK
Definition: loadcell4.h:238
loadcell4_default_cfg
err_t loadcell4_default_cfg(loadcell4_t *ctx)
Load Cell 4 default configuration function.
loadcell4_init
err_t loadcell4_init(loadcell4_t *ctx, loadcell4_cfg_t *cfg)
Load Cell 4 initialization function.
loadcell4_cfg_setup
void loadcell4_cfg_setup(loadcell4_cfg_t *cfg)
Load Cell 4 configuration object setup function.
application_task
void application_task(void)
Definition: main.c:123
loadcell4_get_weight
float loadcell4_get_weight(loadcell4_t *ctx, loadcell4_data_t *cell_data)
Get weight function.
loadcell4_calibration
err_t loadcell4_calibration(loadcell4_t *ctx, uint16_t cal_val, loadcell4_data_t *cell_data)
Calibration function.
LOADCELL4_WEIGHT_100G
#define LOADCELL4_WEIGHT_100G
Definition: loadcell4.h:63
application_init
void application_init(void)
Definition: main.c:34
loadcell4_power_dev
void loadcell4_power_dev(loadcell4_t *ctx, uint8_t power_state)
Enable power function.
loadcell4_tare
void loadcell4_tare(loadcell4_t *ctx, loadcell4_data_t *cell_data)
Tare the scales function.
loadcell4_t
Load Cell 4 Click context object.
Definition: loadcell4.h:179
LOADCELL4_PWR_ON
#define LOADCELL4_PWR_ON
Definition: loadcell4.h:119
LOADCELL4_MAP_MIKROBUS
#define LOADCELL4_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition: loadcell4.h:165