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mikroSDK Library

EXPAND 5 click

Rating:

5

Author: MIKROE

Last Updated: 2020-07-21

Package Version: 1.0.0.0

mikroSDK Library: 1.0.0.0

Category: Port expander

Downloaded: 2200 times

Not followed.

License: MIT license  

EXPAND 5 Click features a low-voltage 24-bit I2C and SMBus I/O expander. This 24-bit I/O expander is designed to provide general-purpose remote I/O expansion for most microcontroller families via the I2C serial interface.

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  • mikroSDK Library 2.0.0.0
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mikroSDK Library Blog

EXPAND 5 Click

EXPAND 5 Click

Native view of the EXPAND 5 Click board.

View full image
EXPAND 5 Click

EXPAND 5 Click

Front and back view of the EXPAND 5 Click board.

View full image

Library Description

The library covers necessary functions that enables the usage of the EXPAND 5 click board. User can configure polarity and direction of every pin and get or set state of each and every pin.

Key functions:

  • void expand5_set_all_dir( uint8_t bank0, uint8_t bank1, uint8_t bank2 ); - Function is used to set pins' direction ( I/O ) setting in all banks.
  • void expand5_write_pin ( uint16_t pin, uint8_t pin_val ); - Function is used to set a single output pin's logic level.
  • void expand5_write_all_banks ( uint8_t bank0, uint8_t bank1, uint8_t bank2 ); - Function is used to set logic levels in all banks.

Examples description

The application is composed of three sections :

  • System Initialization - Initializes I2C module, LOG structure and sets RST pin as output and INT pin as input.
  • Application Initialization - Initalizes I2C driver, resets the device, configures all pins as output and makes an initial log.
  • Application Task - (code snippet) This example shows the capabilities of the EXPAND 5 click by toggling each of 24 available pins.
void application_task ( )
{
    for ( pin_num = EXPAND5_P00; pin_num <= EXPAND5_P27; pin_num++ )
    {
        expand5_write_all_banks ( bank_low, bank_low, bank_low );
        expand5_write_pin ( pin_num, EXPAND5_HIGH );
        mikrobus_logWrite( "Pin ", _LOG_TEXT );
        ByteToStr( pin_num, log_txt );
        Ltrim( log_txt );
        mikrobus_logWrite( log_txt, _LOG_TEXT );
        mikrobus_logWrite( " is high!", _LOG_LINE );

        Delay_ms( 100 );
        expand5_write_all_banks ( bank_low, bank_low, bank_low );
    }
    mikrobus_logWrite( "-------------------", _LOG_LINE );
    Delay_ms( 1000 );
}

Other mikroE Libraries used in the example:

  • I2C
  • 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.

Library Description

The library covers necessary functions that enables the usage of the EXPAND 5 click board. User can configure polarity and direction of every pin and get or set state of each and every pin.

Key functions:

  • void expand5_set_all_dir( uint8_t bank0, uint8_t bank1, uint8_t bank2 ); - Function is used to set pins' direction ( I/O ) setting in all banks.
  • void expand5_write_pin ( uint16_t pin, uint8_t pin_val ); - Function is used to set a single output pin's logic level.
  • void expand5_write_all_banks ( uint8_t bank0, uint8_t bank1, uint8_t bank2 ); - Function is used to set logic levels in all banks.

Examples description

The application is composed of three sections :

  • System Initialization - Initializes I2C module, LOG structure and sets RST pin as output and INT pin as input.
  • Application Initialization - Initalizes I2C driver, resets the device, configures all pins as output and makes an initial log.
  • Application Task - (code snippet) This example shows the capabilities of the EXPAND 5 click by toggling each of 24 available pins.
void application_task ( )
{
    for ( pin_num = EXPAND5_P00; pin_num <= EXPAND5_P27; pin_num++ )
    {
        expand5_write_all_banks ( bank_low, bank_low, bank_low );
        expand5_write_pin ( pin_num, EXPAND5_HIGH );
        mikrobus_logWrite( "Pin ", _LOG_TEXT );
        ByteToStr( pin_num, log_txt );
        Ltrim( log_txt );
        mikrobus_logWrite( log_txt, _LOG_TEXT );
        mikrobus_logWrite( " is high!", _LOG_LINE );

        Delay_ms( 100 );
        expand5_write_all_banks ( bank_low, bank_low, bank_low );
    }
    mikrobus_logWrite( "-------------------", _LOG_LINE );
    Delay_ms( 1000 );
}

Other mikroE Libraries used in the example:

  • I2C
  • 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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