Library Description

The library covers all the necessary functions to control H-Bridge 4 click board. The H-Bridge 4 click communicates with the target board through the AN, INT, PWM, RST and CS lines on MikroBUS. This library offers functions for setting or clearing of any and every of the five pins used for communication, also user can use functions that enable or disable clockwise or counter-clockwise motion, as well as standby mode and brake for both channels.

Key functions:

• void hbridge4_motorAStandby() - Function is used to put motor A into standby.
• void hbridge4_motorACW() - Function is used to put motor A into clockwise motion.
• void hbridge4_motorABrake() - Function is used to brake motor A to a halt.

Examples description

The application is composed of three sections :

• System Initialization - Initializes GPIO and LOG structures, sets AN, INT, PWM, RST and CS pins as output.
• Application Initialization - Initialization driver enables GPIO and also starts write log.
• Application Task - (code snippet) This example demonstrates the use of H-Bridge 4 click board by putting A motor in standby mode, then spining it in clockwise direction and applying brake function, and then spining it in counter-clockwise direction and applying brake function again.

void applicationTask()
{
    mikrobus_logWrite( "The motor A is in standby mode", _LOG_LINE );
    hbridge4_motorAStandby();
    Delay_ms( 100 );
    mikrobus_logWrite( "The motor A turns clockwise", _LOG_LINE );
    hbridge4_motorACW();
    Delay_ms( 2000 );
    mikrobus_logWrite( "The motor A applies brake", _LOG_LINE );
    hbridge4_motorABrake();
    Delay_ms( 1000 );
    mikrobus_logWrite( "The motor A turns counter-clockwise", _LOG_LINE );
    hbridge4_motorACCW();
    Delay_ms( 2000 );
    mikrobus_logWrite( "The motor A applies brake", _LOG_LINE );
    hbridge4_motorABrake();
    Delay_ms( 1000 );
}

Other mikroE Libraries used in the example:

• UART

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. The terminal available in all MikroElektronika compilers, or any other terminal application of your choice, can be used to read the message.