common.cpp

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//****************************************************************************
// INCLUDES
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>   // exit
#include <signal.h>
#include <string.h>
#include <stdlib.h>   // strtoul
#include "common.h"


//****************************************************************************
// CODE 



void signal_handler(int signal)
{
        HANDLE h;
        do_exit(0, h);
}

void do_exit(int error, HANDLE h)
{
        if (h)
        {
                print_diag("pcan_topics", h);
                CAN_Close(h);
        }
        printf("pcan_topics: finished (%d).\n\n", error);
        exit(error);
}


// the opposite: lookup for device string out of HW_.. constant
char const * getNameOfInterface(int nType)
{
        switch (nType)
        {
        case HW_PCI:            return "pci";
        case HW_ISA_SJA:        return "isa";
        case HW_DONGLE_SJA:     return "sp";
        case HW_DONGLE_SJA_EPP: return "epp";
        case HW_USB:            return "usb";
        case HW_USB_PRO:        return "usbpro";
        case HW_PCCARD:         return "pccard";
        default:                return "unknown";
        }
}

// print out device and channel diagnostics
void print_diag(const char *prgName, HANDLE h)
{
        int err;
        TPDIAG diag;
        err = LINUX_CAN_Statistics(h, &diag);
        if (err)
                printf("%s: can't read diagnostics, error %d!\n", prgName, err);
        else
        {
                printf("%s: type            = %s\n",              prgName, getNameOfInterface(diag.wType));
                if ((diag.wType == HW_USB) || (diag.wType == HW_USB_PRO))
                {
                        printf("             Serial Number   = 0x%08x\n", diag.dwBase);
                        printf("             Device Number   = %d\n",     diag.wIrqLevel);
                }
                else
                {
                        printf("             io              = 0x%08x\n", diag.dwBase);
                        printf("             irq             = %d\n",     diag.wIrqLevel);
                }
                printf("             count of reads  = %d\n",     diag.dwReadCounter);
                printf("             count of writes = %d\n",     diag.dwWriteCounter);
                printf("             count of errors = %d\n",     diag.dwErrorCounter);
                printf("             count of irqs   = %d\n",     diag.dwIRQcounter);
                printf("             last CAN status = 0x%04x\n", diag.wErrorFlag);
                printf("             last error      = %d\n",     diag.nLastError);
                printf("             open paths      = %d\n",     diag.nOpenPaths);
                printf("             driver version  = %s\n",     diag.szVersionString);
        }
}