I'm new to DSP Programming. I've got a dsp system board that I'm not in complete control of, but am doing a bunch of programming on. I'd like to know if there is an easy way of enabling the C library function call to clock()? The help file in code composer studio indicates that I'd have to write my own handler, but I have no idea how I might even begin to support the back end of that function. I am also interested in knowing if it would be possible to support the time() function call, as it would simplify some of the things I'm doing significantly. I have found it interesting that even though the call does not seem to work correctly, it tries to use some offset of 8 hours from GMT. time_t timer; time(&timer); fprintf(tx,"\t clock() = %u\r\n",clock()); fprintf(tx,"\t GMT Time = %s",asctime(gmtime(&timer))); fprintf(tx,"\t Local Time = %s",asctime(localtime(&timer))); clock() = 4177131769 GMT Time = Wed Nov 24 02:35:04 2032 Local Time = Tue Nov 23 20:35:04 2032 When I am connected via the JTAG emulator, the time() function returns the correct system time, but the clock function continuosly returns zero. When I disconnect, the clock() function increases the number it returns untill it gets to the maximum number I listed above, and the date goes out to 2032. If the clock() function wrapped when it got to the maximum value, it might do for what I need, but I'm mainly looking for any solution.
clock() C Library call on 6713 DSP.
Started by ●November 2, 2005
Reply by ●November 2, 20052005-11-02
William C Bonner wrote:> I'm new to DSP Programming. I've got a dsp system board that I'm not > in complete control of, but am doing a bunch of programming on. I'd > like to know if there is an easy way of enabling the C library function > call to clock()? > > The help file in code composer studio indicates that I'd have to write > my own handler, but I have no idea how I might even begin to support > the back end of that function. > > I am also interested in knowing if it would be possible to support the > time() function call, as it would simplify some of the things I'm doing > significantly. I have found it interesting that even though the call > does not seem to work correctly, it tries to use some offset of 8 hours > from GMT. > > time_t timer; > time(&timer); > fprintf(tx,"\t clock() = %u\r\n",clock()); > fprintf(tx,"\t GMT Time = %s",asctime(gmtime(&timer))); > fprintf(tx,"\t Local Time = %s",asctime(localtime(&timer))); > > clock() = 4177131769 > GMT Time = Wed Nov 24 02:35:04 2032 > Local Time = Tue Nov 23 20:35:04 2032 > > When I am connected via the JTAG emulator, the time() function returns > the correct system time, but the clock function continuosly returns > zero. When I disconnect, the clock() function increases the number it > returns untill it gets to the maximum number I listed above, and the > date goes out to 2032. > > If the clock() function wrapped when it got to the maximum value, it > might do for what I need, but I'm mainly looking for any solution.Why do you stick to clock() or time() functions? Throw in a CDB, then call CLK_getltime() and/or CLK_gethtime() in a task(not in main()) [RJiang]