digipot14  2.1.0.0
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DIGI POT 14 click

DIGI POT 14 Click is a compact add-on board that contains a digitally controlled potentiometer. This board features the TPL0102, a dual-channel digital potentiometer with non-volatile memory from Texas Instruments. It is a 100K resistance end-to-end potentiometer with a 256-position resolution, where the wiper position can be stored in EEPROM. It can operate from both 3.3V and 5V power supplies and provides a typical 92ppm/ºC end-to-end nominal resistance temperature coefficient and only 4ppm/ºC ratiometric.

click Product page


Click library

  • Author : Stefan Ilic
  • Date : Aug 2023.
  • Type : I2C type

Software Support

We provide a library for the DIGI POT 14 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 DIGI POT 14 Click driver.

Standard key functions :

Example key functions :

Example Description

This library contains API for DIGI POT 14 Click driver.

The demo application uses a digital potentiometer to change the resistance values.

The demo application is composed of two sections :

Application Init

The initialization of I2C module, log UART, and additional pins.

After the driver init, the app executes a default configuration.

void application_init ( void )
{
log_cfg_t log_cfg;
digipot14_cfg_t digipot14_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
digipot14_cfg_setup( &digipot14_cfg );
DIGIPOT14_MAP_MIKROBUS( digipot14_cfg, MIKROBUS_1 );
if ( I2C_MASTER_ERROR == digipot14_init( &digipot14, &digipot14_cfg ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
if ( DIGIPOT14_ERROR == digipot14_default_cfg ( &digipot14 ) )
{
log_error( &logger, " Default configuration." );
for ( ; ; );
}
log_info( &logger, " Application Task " );
}

Application Task

This example demonstrates the use of the DIGI POT 14 Click board™.

The demo application iterates through the entire wiper range. Results are being sent to the UART Terminal, where you can track their changes.

void application_task ( void )
{
for ( uint8_t wiper_val = DIGIPOT14_MIN_POSITION; wiper_val <= DIGIPOT14_MAX_POSITION; wiper_val++ )
{
digipot14_set_pot_a_wiper( &digipot14, wiper_val );
digipot14_set_pot_b_wiper( &digipot14, wiper_val );
log_printf( &logger, " Resistance = %.3f KOhm \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.DIGIPOT14

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.


DIGIPOT14_MAX_RESISTANCE_KOHM
#define DIGIPOT14_MAX_RESISTANCE_KOHM
Definition: digipot14.h:102
digipot14_cfg_setup
void digipot14_cfg_setup(digipot14_cfg_t *cfg)
DIGI POT 14 configuration object setup function.
application_task
void application_task(void)
Definition: main.c:68
DIGIPOT14_MAP_MIKROBUS
#define DIGIPOT14_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition: digipot14.h:137
digipot14_default_cfg
err_t digipot14_default_cfg(digipot14_t *ctx)
DIGI POT 14 default configuration function.
digipot14_t
DIGI POT 14 Click context object.
Definition: digipot14.h:149
DIGIPOT14_MIN_POSITION
#define DIGIPOT14_MIN_POSITION
Definition: digipot14.h:105
digipot14_set_pot_b_wiper
err_t digipot14_set_pot_b_wiper(digipot14_t *ctx, uint8_t wiper_pos)
DIGI POT 14 set the wiper position of potentiometer B function.
digipot14_set_pot_a_wiper
err_t digipot14_set_pot_a_wiper(digipot14_t *ctx, uint8_t wiper_pos)
DIGI POT 14 set the wiper position of potentiometer A function.
DIGIPOT14_MAX_POSITION
#define DIGIPOT14_MAX_POSITION
Definition: digipot14.h:103
digipot14_reg_write
err_t digipot14_reg_write(digipot14_t *ctx, uint8_t reg, uint8_t data_in)
DIGI POT 14 register write function.
application_init
void application_init(void)
Definition: main.c:32
digipot14_cfg_t
DIGI POT 14 Click configuration object.
Definition: digipot14.h:163
DIGIPOT14_MAX_POSITION_NUM
#define DIGIPOT14_MAX_POSITION_NUM
Definition: digipot14.h:104
digipot14_init
err_t digipot14_init(digipot14_t *ctx, digipot14_cfg_t *cfg)
DIGI POT 14 initialization function.
DIGIPOT14_ERROR
@ DIGIPOT14_ERROR
Definition: digipot14.h:179