topic Optimization problems in LPCXpresso IDE https://community.nxp.com/t5/LPCXpresso-IDE/Optimization-problems/m-p/531411#M2485 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by IanJames on Wed Jun 26 02:15:03 MST 2013</STRONG><BR /><SPAN>Hi,</SPAN><BR /><BR /><SPAN>I have a small project that I have written to test the Watchdog Reset (see earlier post).</SPAN><BR /><BR /><SPAN>I have noticed that if I compile the code (for Release) with optimization None (-O0) then the processor fails to Reset after a Power Cycle if however I compile for size (-Os) then the processor resets correctly.</SPAN><BR /><BR /><SPAN>I have two ways of detecting whether the processor reset i) bytes are transmitted of the UART and ii) I toggle an IO pin in the SysTickhandle every millisecond.</SPAN><BR /><BR /><SPAN>If anything I would have expected problems with optimization ON not OFF!!</SPAN><BR /><BR /><SPAN>Processor is LPC1224</SPAN><BR /><BR /><SPAN>Any ideas anyone?</SPAN><BR /><BR /><SPAN>Thanks,</SPAN><BR /><BR /><SPAN>Ian James</SPAN></BODY></HTML> Thu, 16 Jun 2016 01:36:03 GMT lpcware 2016-06-16T01:36:03Z Optimization problems https://community.nxp.com/t5/LPCXpresso-IDE/Optimization-problems/m-p/531411#M2485 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by IanJames on Wed Jun 26 02:15:03 MST 2013</STRONG><BR /><SPAN>Hi,</SPAN><BR /><BR /><SPAN>I have a small project that I have written to test the Watchdog Reset (see earlier post).</SPAN><BR /><BR /><SPAN>I have noticed that if I compile the code (for Release) with optimization None (-O0) then the processor fails to Reset after a Power Cycle if however I compile for size (-Os) then the processor resets correctly.</SPAN><BR /><BR /><SPAN>I have two ways of detecting whether the processor reset i) bytes are transmitted of the UART and ii) I toggle an IO pin in the SysTickhandle every millisecond.</SPAN><BR /><BR /><SPAN>If anything I would have expected problems with optimization ON not OFF!!</SPAN><BR /><BR /><SPAN>Processor is LPC1224</SPAN><BR /><BR /><SPAN>Any ideas anyone?</SPAN><BR /><BR /><SPAN>Thanks,</SPAN><BR /><BR /><SPAN>Ian James</SPAN></BODY></HTML> Thu, 16 Jun 2016 01:36:03 GMT https://community.nxp.com/t5/LPCXpresso-IDE/Optimization-problems/m-p/531411#M2485 lpcware 2016-06-16T01:36:03Z Re: Optimization problems https://community.nxp.com/t5/LPCXpresso-IDE/Optimization-problems/m-p/531412#M2486 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by CodeRedSupport on Wed Jun 26 07:30:15 MST 2013</STRONG><BR /><SPAN>Maybe the slower execution speed of you code when compiled for -O0 (= no optimisation) means that you are no longer meeting the restrictions for feeding the watchdog?</SPAN><BR /><BR /><SPAN>Regards,</SPAN><BR /><SPAN>CodeRedSupport</SPAN></BODY></HTML> Thu, 16 Jun 2016 01:36:04 GMT https://community.nxp.com/t5/LPCXpresso-IDE/Optimization-problems/m-p/531412#M2486 lpcware 2016-06-16T01:36:04Z