Library Description

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

Key functions:

uint8_t hbridge_setSpeed( float minSpeed, float maxSpeed, float accelRatio, T_HBRIDGE_OBJ obj ) - Setup motor speed.

uint8_t hbridge_setRoute( const uint8_t direction, uint32_t steps, T_HBRIDGE_OBJ obj ) - Setup new route. 

void hbridge_start( T_HBRIDGE_OBJ obj ) - Starts the motor movement.

void hbridge_setOutput( uint8_t state ) - Function puts the all four outputs in the desired state.

Examples Description

The application is composed of three sections:

• System Initialization - Initializes all GPIO pins found on H_Bridge Click and timer to 1ms interrupt.
• Application Initialization - The first segment initializes driver and stepper control. Second segment setup movement limits, maximum and minimum speed, and acceleration ratio. The third segment enables the motor and set up a new route which will be called from application task.
• Application Task - (code snippet) - Sequentially moves the motor. The first part of sequence executes movement until the end. The second part stops the motor movement after one second and continues the sequence after two seconds.

void applicationTask()
{
 hbridge_start( (T_HBRIDGE_OBJ)&myStepper );
 while( myStepper.status.running )
 {
 hbridge_process( (T_HBRIDGE_OBJ)&myStepper );
 }
 Delay_ms( 1000 );
}

Additional notes and information

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.