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mikroSDK Library

STSPIN220 click

Rating:

5

Author: MikroElektronika Team

Last Updated: 2019-05-06

Category: Motor Control

Downloaded: 87 times

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STSPIN220 click is a stepper motor driver with the PWM current control and selectable microstepping up to 256 microsteps. It is based on the STSPIN220, a low voltage stepper motor driver from STSPIN2 series.

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mikroSDK Library Blog

STSPIN220 click

STSPIN220 click

Native view of the STSPIN220 Click board.

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STSPIN220 click

STSPIN220 click

Front and back view of the STSPIN220 Click board.

View full image

Library Description

Library carries everything needed for stepper motor control including speed and acceleration setup. Library is also adjustable to working on different amount of ticks per second, also speed and acceleration can be provided in float format. Buffer used for movement calculation is defined by user so this library can be adjusted for MCUs with very limited RAM resources. Check documentation for more details how to use it.

Key functions:

  • uint8_t stspin220_setSpeed( float minSpeed, float maxSpeed, float accelRatio, T_STSPIN220_OBJ obj ) - Setup motor speed.
  • uint8_t stspin220_setRoute( const uint8_t direction, uint32_t steps, T_STSPIN220_OBJ obj ) - Setup new route.
  • void stspin220_start( T_STSPIN220_OBJ obj ) - Start motor movement.

Examples description

The application is composed of the three sections :

  • System Initialization - Initializes all GPIO pins found on STSPIN220 Click and timer to 1ms interrupt.
  • Application Initialization - First segment initializes driver and stepper control. Second segment setup movement limits, maximum and minimum speed, and acceleration ratio. Third segment enables motor and setup new route which will be called from application task.
  • Application Task - (code snippet) - Sequentialy moves motor. First part of sequence executes movement until the end. Second part stop motor movement after one second and continues sequence after two seconds.
void applicationTask()
{
    stspin220_start( (T_STSPIN220_OBJ)&myStepper );
    while ( myStepper.status.running )
	{
	    stspin220_process( (T_STSPIN220_OBJ)&myStepper );
	}
    Delay_ms( 2000 );
    
    stspin220_start( (T_STSPIN220_OBJ)&myStepper );
    Delay_ms( 1000 );
    stspin220_stop( (T_STSPIN220_OBJ)&myStepper );
    Delay_ms( 2000 );
}

In addition to library function calls example carries necessay Timer ISR and Timer initialization. Check Timer initialization setings and update it according to your MCU - Timer Calculator.

Additional notes and informations

Depending on the development board you are using, you may need USB UART clickUSB 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.

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