stepper21  2.1.0.0
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Stepper 21 click

Stepper 21 Click is a compact add-on board that contains a bipolar stepper motor driver. This board features the DRV8825, a stepper motor controller integral circuit from Texas Instruments. It is a PWM micro-stepping stepper motor driver with up to 1/32 micro-stepping resolution and a built-in micro-stepper indexer. The driver has two H-bridge drivers and is intended to drive a bipolar stepper motor in a voltage supply operating range of 8.2V up to 45V.

click Product page


Click library

  • Author : Stefan Filipovic
  • Date : Apr 2023.
  • Type : I2C type

Software Support

We provide a library for the Stepper 21 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 Stepper 21 Click driver.

Standard key functions :

Example key functions :

Example Description

This example demonstrates the use of the Stepper 21 click board by driving the motor in both directions for a desired number of steps.

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;
stepper21_cfg_t stepper21_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, " Application Init " );
// Click initialization.
stepper21_cfg_setup( &stepper21_cfg );
STEPPER21_MAP_MIKROBUS( stepper21_cfg, MIKROBUS_1 );
if ( I2C_MASTER_ERROR == stepper21_init( &stepper21, &stepper21_cfg ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
if ( STEPPER21_ERROR == stepper21_default_cfg ( &stepper21 ) )
{
log_error( &logger, " Default configuration." );
for ( ; ; );
}
log_info( &logger, " Application Task " );
}

Application Task

Drives the motor clockwise for 200 full steps and then counter-clockiwse for 400 quarter

steps with 2 seconds delay before changing the direction. All data is being logged on the USB UART where you can track the program flow.

void application_task ( void )
{
log_printf ( &logger, " Move 200 full steps clockwise \r\n\n" );
Delay_ms ( 2000 );
log_printf ( &logger, " Move 400 quarter steps counter-clockwise \r\n\n" );
Delay_ms ( 2000 );
}

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.Stepper21

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.


STEPPER21_MAP_MIKROBUS
#define STEPPER21_MAP_MIKROBUS(cfg, mikrobus)
MikroBUS pin mapping.
Definition: stepper21.h:158
STEPPER21_SPEED_FAST
#define STEPPER21_SPEED_FAST
Definition: stepper21.h:129
stepper21_init
err_t stepper21_init(stepper21_t *ctx, stepper21_cfg_t *cfg)
Stepper 21 initialization function.
STEPPER21_DIR_CW
#define STEPPER21_DIR_CW
Definition: stepper21.h:100
application_task
void application_task(void)
Definition: main.c:66
STEPPER21_MODE_FULL_STEP
#define STEPPER21_MODE_FULL_STEP
Stepper 21 step resolution setting.
Definition: stepper21.h:114
STEPPER21_MODE_QUARTER_STEP
#define STEPPER21_MODE_QUARTER_STEP
Definition: stepper21.h:116
stepper21_set_direction
void stepper21_set_direction(stepper21_t *ctx, uint8_t dir)
Stepper 21 set direction function.
STEPPER21_ERROR
@ STEPPER21_ERROR
Definition: stepper21.h:217
stepper21_set_step_mode
err_t stepper21_set_step_mode(stepper21_t *ctx, uint8_t mode)
Stepper 21 set step mode function.
stepper21_drive_motor
void stepper21_drive_motor(stepper21_t *ctx, uint32_t steps, uint8_t speed)
Stepper 21 driver motor function.
STEPPER21_SPEED_VERY_FAST
#define STEPPER21_SPEED_VERY_FAST
Definition: stepper21.h:130
stepper21_default_cfg
err_t stepper21_default_cfg(stepper21_t *ctx)
Stepper 21 default configuration function.
application_init
void application_init(void)
Definition: main.c:30
STEPPER21_DIR_CCW
#define STEPPER21_DIR_CCW
Stepper 21 direction setting.
Definition: stepper21.h:99
stepper21_cfg_t
Stepper 21 Click configuration object.
Definition: stepper21.h:196
stepper21_cfg_setup
void stepper21_cfg_setup(stepper21_cfg_t *cfg)
Stepper 21 configuration object setup function.
stepper21_t
Stepper 21 Click context object.
Definition: stepper21.h:174