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mikroSDK Library

H Bridge 3 click

Rating:

5

Author: MikroElektronika Team

Last Updated: 2019-04-05

Category: Stepper

Downloaded: 84 times

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License: MIT license  

H-Bridge 3 Click is designed for the control of small DC motors and inductive loads, it features TLE9201SG a general purpose 6A H-Bridge perfectly suited for industrial and automotive applications.

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mikroSDK Library Blog

H-Bridge 3 Click

H-Bridge 3 Click

Native view of the H-Bridge 3 Click board.

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H-Bridge 3 Click

H-Bridge 3 Click

Front and back view of the H-Bridge 3 Click board.

View full image

Library Description

The library contains all the necessary functions for converting ADC values to real voltages and pressure values.

Key functions:

  • void hbridge3_anSet( uint8_t pin_state ) - sets AN pin state.
  • void hbridge3_rstSet( uint8_t pin_state ) - sets RST pin state.
  • uint8_t hbridge3_spi( uint8_t spi_command ) - sends SPI command and receives response to command sent.

Examples description

The application is composed of three sections :

  • System Initialization - Initializes SPI and LOG modules, AN, RST, CS and PWM pins .
  • Application Initialization - Initializes SPI driver and PWM module, sets minimum PWM duty cycle and starts PWM .
  • Application Task - Checks for user input and based on entered character executes one of additional functions. Checks for diagnosis register change and if it had changed, logs status message.
void applicationTask( )
{
    uart_flag = UART_Data_Ready( );
    if ( uart_flag == 1 )
    {
        uart_char = UART_Read( );
        switch (uart_char)
        {
            case '+' :
            {
                hbridge3_casePlus( );
                break;
            }
            case '-' :
            {
                hbridge3_caseMinus( );
                break;
            }
            case 'd' :
            {
                hbridge3_caseDiagnosis( );
                break;
            }
            case '1' :
            {
                hbridge3_caseDirection1( );
                break;
            }
            case '2' :
            {
                hbridge3_caseDirection2( );
                break;
            }
            case '0' :
            {
                hbridge3_caseOnOff( );
                break;
            }
            default :
            {
                mikrobus_logWrite( "> Invalid command", _LOG_LINE );
                break;
            }
        }
    }

    spi_response = hbridge3_spi( _HBRIDGE3_CMD_RD_DIA );
    diagnosis_new = spi_response & 0x0F;
    if (diagnosis_new != diagnosis_old)
    {
        hbridge3_logDiagnosis( diagnosis_new );
        diagnosis_old = diagnosis_new;
    }

    if (( spi_response & 0x40 ) == 0x00 )
    {
        mikrobus_logWrite( "> Overtemperature shutdown", _LOG_LINE );
    }
    if (( spi_response & 0x10 ) == 0x00 )
    {
        mikrobus_logWrite( "> Current limitation active", _LOG_LINE );
    }
}

Additional Functions :

  • void hbridge3_casePlus( ) - Increments duty cycle
  • void hbridge3_caseMinus( ) - Decrements duty cycle
  • void hbridge3_caseDiagnosis( ) - Gets diagnosis register content and logs status message
  • void hbridge3_caseDirection1( ) - Changes rotation direction to direction 1
  • void hbridge3_caseDirection2( ) - Changes rotation direction to direction 2
  • void hbridge3_caseOnOff( ) - Switches oputput MOSFETs on and off

Other mikroE Libraries used in the example:

  • SPI
  • UART
  • Conversions

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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