LoadTest.cpp

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#include <stdio.h>
#include <unistd.h>

#include "../hubolib.h"
#include "../hubocfg.h" // Required for changing default I2C device.

using namespace HuboLib;

/*
Compile and link: 
    g++ LoadTest.cpp -L../ -lhubo -lpthread -lrt -o LoadTest.out
Run:
    sudo ./LoadTest.out
Purpose:
    Lets turn on all relais, and go into an infinite loop to have the CPU consume as much power as possible. 
*/

int main(int argc, char* argv[])
{
    if (argc != 2)
    {
        printf ("Usage: \n  LoadTest.out <digital outputs to activate>\n  example: LoadTest.out 5  // this will set channels 0 and 2\n");
        return 1;
    }
    
    int outValue = 0;
    if (sscanf (argv[1], "%d", &outValue) != 1)
    {
        printf ("Digital output could not be determined!\n");
        return 1;
    }

    printf ("Setting digital outputs to 0x%02X.\n", outValue);
    printf ("Hit Ctrl+C to terminate.\n");
    
    // If required - set the I2C device to work with. The Raspberry Pi uses "/dev/i2c-1" which is default, the Banana Pi uses "/dev/i2c-0"
    #ifdef BPI
        g_I2CConfig.m_sI2CDevice = "/dev/i2c-0";
    #endif
    
    // Initialize the library once in your program.
    if (!Initialize())
    {
        printf ("Error: Initialize\n");
        return 1;
    }
    
    // Set the cycle time to 2ms (500Hz).
    Set_Cycle_Time(2);
    
    // Finally set the output.
    Set_DO_Channels (outValue);

    // Press Ctrl-C to stop.
    while (1);
    
    // Free library resources.
    Uninitialize();
    
    return 0;
}