Integrating Click IO expander with Arduino

Using Arduino LEDs and Multiplexing
1

Hi,

I am new to Arduino and trying to create a somewhat complex cable continuity testing program. Some of the cables I will be testing have over 100 pins so I cannot control this with one MEGA 2560 board hence, I have purchased 3 IO expansion boards called "Expand 13 Click" sold by Mikroe (Expand 13 Click).

The main issue I am currently having regards interfacing these expander boards with my Arduino. From what I understand, I can use 8 different addresses so 3 of these boards should be possible to use with my Arduino but, I am unsure on how to address individual pins on each of the expander boards.

I am using a library made by Mikroe that is on their LibStock page (LibStock - Expand 13 click) but cannot work out why the test code they have given with the library wont compile on my Arduino IDE.

I have attached the code below that I am trying to compile and would be grateful if anybody can tell me why this wont compile/ what's missing from the code.

#include <expand13.h>


void setup() {
    log_cfg_t log_cfg;  /**< Logger config object. */
    expand13_cfg_t expand13_cfg;  /**< Click config object. */

    /** 
     * Logger initialization.
     * Default baud rate: 115200
     * Default log level: LOG_LEVEL_DEBUG
     * @note If USB_UART_RX and USB_UART_TX 
     * are defined as HAL_PIN_NC, you will 
     * need to define them manually for log to work. 
     * See @b LOG_MAP_USB_UART macro definition for detailed explanation.
     */
    LOG_MAP_USB_UART( log_cfg );
    log_init( &logger, &log_cfg );
    log_info( &logger, " Application Init " );

    // Click initialization.
    expand13_cfg_setup( &expand13_cfg );
    EXPAND13_MAP_MIKROBUS( expand13_cfg, MIKROBUS_1 );
    if ( I2C_MASTER_ERROR == expand13_init( &expand13, &expand13_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
    expand13_enable_device ( &expand13 );
    log_info( &logger, " Application Task " );
}

void loop() {
    uint8_t port_value[ 6 ] = { 0 };
    uint16_t pin_num = 0;

    for ( pin_num = EXPAND13_PIN_0_MASK; pin_num <= EXPAND13_PIN_7_MASK; pin_num <<= 1 )
    {
        if ( !expand13_get_int_pin ( &expand13 ) )
        {
            log_printf( &logger, " External input has occurred.\r\n" );
        }

        memset ( port_value, pin_num, 6 );
        expand13_write_all_ports( &expand13, port_value );

        expand13_read_all_ports( &expand13, port_value );
        for ( uint8_t cnt = EXPAND13_PORT_0; cnt <= EXPAND13_PORT_5; cnt++ )
        {
            log_printf( &logger, " Status port %d : 0x%.2X\r\n", ( uint16_t ) cnt, ( uint16_t ) port_value[ cnt ] );
        }
        log_printf( &logger, "\n" );
        Delay_ms ( 1000 );
    }
}

Thank you.

2

What error(s) does it produce? What board are you compiling it for?

3

Hi,

I am only compiling this on the Arduino IDE software at the moment but will be using my final code on an Arduino MEGA 2560.

The error code I have been receiving in the output window is:

 #include "drv_digital_out.h"
          ^~~~~~~~~~~~~~~~~~~
compilation terminated.
exit status 1

Compilation error: exit status 1
4

How did you install the library for the Expand 13 module?

Yes, I understand. What board is the IDE set to when you compile the code?

5

Assuming that the compiler error message you posted is incomplete and somewhere it said that it couldn't find drv_digital_out.h then it seems like it's missing from the zip. Although IDK exactly what you downloaded to get the code and library.

image
image1789×642 44.5 KB

6

Those libraries are not usable with any Arduino board that uses an AVR processir like the Mega 2560.
You need to find a Mega compatible library.

7

I had a quick look; it seems like the MikroE library relies on further MikroE-specific libraries. Looks like it'd be a chore to try and rework it for Arduino.

@chimney12 try this instead: GitHub - Blueprint-Foundry/PI4IOE5V96248_Arduino_Library: Arduino Library for PI4IOE5V96248
Alternatively stay within the MikroE ecosystem and use their development tools, but I imagine this may turn out to be the more costly option.

8

Thank you for the help.

9

Thank you, I will try this library then and hopefully can fiddle it to work.

1 Like