main.c

#include <stdio.h>
#include <stdlib.h>
#include "datenbasis.h"
#include "processFrame.h"

// echo "(0.0) vcan0 001#8d00100100820100" | ./socketcanDecodeSignal ccl_test.dbc testFrame1
// echo "(0.1) vcan0 002#0C00057003CD1F83" | ./socketcanDecodeSignal ccl_test.dbc testFrame2
void printCallback(char *name, __u64 rawValue, double scaledValue,
		struct timeval tv, char *device)
{
	printf("(%04ld.%06ld) %s %s: 0x%02llx %02.0f \n", tv.tv_sec, tv.tv_usec,
			device, name, rawValue, scaledValue);
}

int main(int argc, char **argv)
{
	char buf[100], device[100], ascframe[100];

	char *frameName, *signalName;
	struct can_frame cf;

	struct frame_struct *dataBase = NULL;
	struct signal_callback_list *callbackList = NULL;

	struct signal_struct *mySignal;
	struct frame_struct *myFrame;
	struct timeval tv;

	if (argc < 2)
	{
		fprintf(stderr, "Usage:\n");
		fprintf(stderr,
				"%s Database Message1.Signal1 [Message2.Signal2 Message3.Signal3]\n",
				argv[0]);
		exit(1);
	}

	// read dbc
	if (readInDatabase(&dataBase, argv[1]))
	{
		fprintf(stderr, "Error opening Database %s\n", argv[1]);
		exit(1);
	}
	argc--;
	argv++;

	// parse arguments (frames/signals which should be decoded)
	while (argc >= 2)
	{

		frameName = argv[1];
		signalName = strchr(argv[1], '.');

		printf("Trying to find: Frame: %s", frameName);
		if (signalName != NULL)
		{
			*signalName = 0;
			signalName++;
			printf(", Signal: %s", signalName);
		}
		printf("\n");
		myFrame = find_frame_by_name(dataBase, frameName);

		if (!myFrame)
		{
			fprintf(stderr, "Error finding Frame %s\n", frameName);
			exit(1);
		}

		if (NULL != signalName)
		{
			mySignal = find_signal_by_name(myFrame, signalName);
			if (!mySignal)
			{
				fprintf(stderr, "Error finding Signal %s\n", signalName);
				exit(1);
			}
		}
		else
		{
			mySignal = NULL;
		}
		add_callback(&callbackList, myFrame, mySignal, printCallback, 0);

		printf("-- %s (0x%03x) ", myFrame->name, myFrame->canID);
		if (signalName != NULL)
			printf(" %s (%d [%d]) --", mySignal->name, mySignal->startBit,
					mySignal->signalLength);
		printf("\n");
		argc--;
		argv++;
	}

	while (fgets(buf, 99, stdin))
	{

		if (sscanf(buf, "(%ld.%ld) %s %s", &tv.tv_sec, &tv.tv_usec, device,
				ascframe) != 4)
		{
			fprintf(stderr, "incorrect line format in logfile\n");
			return 1;
		}

		if (parse_canframe(ascframe, &cf))
		{
			return 1;
		}
		processFrame(callbackList, &cf, tv, device);
	}

	return 0;
}