topic Re: How to add run-time initialization and power souce stabilization delay in software for LPC11E67? in LPC Microcontrollers https://community.nxp.com/t5/LPC-Microcontrollers/How-to-add-run-time-initialization-and-power-souce-stabilization/m-p/1066244#M41173 <HTML><HEAD></HEAD><BODY><P>Startup code automatically initialised global variables and zeroes necessary data. It does NOT clear all memory.</P><P></P><P>If your power supply is not stable, suggest you change your circuit design&nbsp;to hold&nbsp;reset until it is stable.</P></BODY></HTML> Wed, 26 Aug 2020 07:59:28 GMT converse 2020-08-26T07:59:28Z How to add run-time initialization and power souce stabilization delay in software for LPC11E67? https://community.nxp.com/t5/LPC-Microcontrollers/How-to-add-run-time-initialization-and-power-souce-stabilization/m-p/1066243#M41172 <HTML><HEAD></HEAD><BODY><P>I am using LPC11E67 microcontroller for the project and using MCUXpresso IDE for software development. I want to clear memory and initialize content of global variables at the startup, I am not sure if that is already covered in the cr_startup file. If not then how to add that? Also how to add delay in startup code so that program starts running after power supply stabilized. &nbsp;</P><P></P><P>Thanks for help!</P></BODY></HTML> Tue, 25 Aug 2020 15:07:14 GMT https://community.nxp.com/t5/LPC-Microcontrollers/How-to-add-run-time-initialization-and-power-souce-stabilization/m-p/1066243#M41172 dhruvkdesai 2020-08-25T15:07:14Z Re: How to add run-time initialization and power souce stabilization delay in software for LPC11E67? https://community.nxp.com/t5/LPC-Microcontrollers/How-to-add-run-time-initialization-and-power-souce-stabilization/m-p/1066244#M41173 <HTML><HEAD></HEAD><BODY><P>Startup code automatically initialised global variables and zeroes necessary data. It does NOT clear all memory.</P><P></P><P>If your power supply is not stable, suggest you change your circuit design&nbsp;to hold&nbsp;reset until it is stable.</P></BODY></HTML> Wed, 26 Aug 2020 07:59:28 GMT https://community.nxp.com/t5/LPC-Microcontrollers/How-to-add-run-time-initialization-and-power-souce-stabilization/m-p/1066244#M41173 converse 2020-08-26T07:59:28Z Re: How to add run-time initialization and power souce stabilization delay in software for LPC11E67? https://community.nxp.com/t5/LPC-Microcontrollers/How-to-add-run-time-initialization-and-power-souce-stabilization/m-p/1066245#M41174 <HTML><HEAD></HEAD><BODY><P>Thank you for the response!</P><P>Any suggestion on how to clear memory on startup and how to hold reset until power supply is stable?</P><P></P><P>Thanks in advance!&nbsp;</P></BODY></HTML> Wed, 26 Aug 2020 13:38:01 GMT https://community.nxp.com/t5/LPC-Microcontrollers/How-to-add-run-time-initialization-and-power-souce-stabilization/m-p/1066245#M41174 dhruvkdesai 2020-08-26T13:38:01Z Re: How to add run-time initialization and power souce stabilization delay in software for LPC11E67? https://community.nxp.com/t5/LPC-Microcontrollers/How-to-add-run-time-initialization-and-power-souce-stabilization/m-p/1066246#M41175 <HTML><HEAD></HEAD><BODY><P>To clear memory, just add a loop in ResetISR before anything else to zero memory - being careful to NOT overwrite the stack!</P></BODY></HTML> Wed, 26 Aug 2020 16:43:30 GMT https://community.nxp.com/t5/LPC-Microcontrollers/How-to-add-run-time-initialization-and-power-souce-stabilization/m-p/1066246#M41175 converse 2020-08-26T16:43:30Z