expand7  2.0.0.0
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Expand 7 click

EXPAND 7 Click is a compact add-on board that contains a multi-port I/O expander with bi-directional input/outputs or PWM outputs.

click Product page


Click library

  • Author : MikroE Team
  • Date : Sep 2020.
  • Type : I2C type

Software Support

We provide a library for the Expand7 Click as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.

Package can be downloaded/installed directly form compilers IDE(recommended way), or downloaded from our LibStock, or found on mikroE github account.

Library Description

This library contains API for Expand7 Click driver.

Standard key functions :

  • Config Object Initialization function.

    void expand7_cfg_setup ( expand7_cfg_t *cfg );

  • Initialization function.

    EXPAND7_RETVAL expand7_init ( expand7_t *ctx, expand7_cfg_t *cfg );

Example key functions :

  • Reset function

    void expand7_reset ( expand7_t *ctx );

  • Set all OUTPUT pins' logic levels function

    void expand7_write_all ( expand7_t *ctx, uint8_t value );

  • Set a single OUTPUT pin's logic level function

    void expand7_write_pin ( expand7_t *ctx, uint16_t pin, uint8_t pin_val );

Examples Description

This example demonstrates the use of the EXPAND 7 click.

The demo application is composed of two sections :

Application Init

Initalizes I2C driver and makes an initial log.

void application_init ( void )
{
log_cfg_t log_cfg;
// Logger initialization.
LOG_MAP_USB_UART( log_cfg );
log_cfg.level = LOG_LEVEL_DEBUG;
log_cfg.baud = 9600;
log_init( &logger, &log_cfg );
log_info( &logger, "---- Application Init ----" );
// Click initialization.
EXPAND7_MAP_MIKROBUS( cfg, MIKROBUS_1 );
expand7_init( &expand7, &cfg );
Delay_ms( 100 );
expand7_reset( &expand7 );
Delay_ms( 1000 );
log_printf( &logger, "------------------- \r\n" );
log_printf( &logger, " EXPAND 7 click \r\n" );
log_printf( &logger, "------------------- \r\n" );
}

Application Task

This example shows the capabilities of the EXPAND 7 click by toggling each of the 40 available pins.

void application_task ( void )
{
expand7_write_all ( &expand7, 0xFF );
log_printf( &logger, "All pins set to HIGH logic level!\r\n" );
log_printf( &logger, "---------------------------------\r\n" );
Delay_ms( 2000 );
for ( pin_num = 0; pin_num < 40; pin_num++ )
{
log_printf( &logger, "Pin %u is set to LOW logic level!\r\n", ( uint16_t) pin_num );
Delay_ms( 300 );
}
log_printf( &logger, "---------------------------------\r\n" );
Delay_ms( 1000 );
}

The full application code, and ready to use projects can be installed directly form compilers IDE(recommneded) or found on LibStock page or mikroE GitHub accaunt.

Other mikroE Libraries used in the example:

  • MikroSDK.Board
  • MikroSDK.Log
  • Click.Expand7

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.


expand7_cfg_t
Click configuration structure definition.
Definition: expand7.h:432
expand7_init
EXPAND7_RETVAL expand7_init(expand7_t *ctx, expand7_cfg_t *cfg)
Initialization function.
expand7_write_pin
void expand7_write_pin(expand7_t *ctx, uint16_t pin, uint8_t pin_val)
Set a single OUTPUT pin's logic level function.
EXPAND7_LOW
#define EXPAND7_LOW
Definition: expand7.h:198
expand7_reset
void expand7_reset(expand7_t *ctx)
Reset function.
application_task
void application_task(void)
Definition: main.c:62
EXPAND7_MAP_MIKROBUS
#define EXPAND7_MAP_MIKROBUS(cfg, mikrobus)
Definition: expand7.h:52
expand7_cfg_setup
void expand7_cfg_setup(expand7_cfg_t *cfg)
Config Object Initialization function.
application_init
void application_init(void)
Definition: main.c:35
expand7_write_all
void expand7_write_all(expand7_t *ctx, uint8_t value)
Set all OUTPUT pins' logic levels function.
pin_num
uint8_t pin_num
Definition: main.c:31