topic Re: Is it possible to write user application code to make change in secondary bootloader flash data? in LPC Microcontrollers https://community.nxp.com/t5/LPC-Microcontrollers/Is-it-possible-to-write-user-application-code-to-make-change-in/m-p/520566#M3703 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by dhanapal on Fri Mar 27 08:07:14 MST 2015</STRONG><BR /><SPAN>Greetings,</SPAN><BR /><BR /><SPAN>Already my IAP functions are reading and writing the flash value. So i am using the same function.</SPAN></BODY></HTML> Wed, 15 Jun 2016 17:45:47 GMT lpcware 2016-06-15T17:45:47Z Is it possible to write user application code to make change in secondary bootloader flash data? https://community.nxp.com/t5/LPC-Microcontrollers/Is-it-possible-to-write-user-application-code-to-make-change-in/m-p/520562#M3699 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by dhanapal on Fri Mar 27 06:46:22 MST 2015</STRONG><BR /><SPAN>Hi All,</SPAN><BR /><BR /><SPAN>My LPC1765 has secondary bootloader. that is running at 0x00 address. User application runs at 0x00010000 - Sector 16(0x10).</SPAN><BR /><BR /><SPAN>Is it possible to change secondary bootloader flash data from user application?</SPAN><BR /><SPAN>Is there any flash lock for SBL when user application runs? </SPAN><BR /><BR /><SPAN>In my testing</SPAN><BR /><SPAN>User application can reset the SBL flash value,User application unable to set the flash value. Eg if SBL area flash value is 0xFF, then user can reset that flash value to 0x00. But if the SBL flash value is 0x00 then user application unable to set the flash value even to 0x01. </SPAN><BR /><BR /><SPAN>What is the reason?</SPAN><BR /><BR /><SPAN>Regards</SPAN><BR /><SPAN>R.Dhanapal</SPAN></BODY></HTML> Wed, 15 Jun 2016 17:45:44 GMT https://community.nxp.com/t5/LPC-Microcontrollers/Is-it-possible-to-write-user-application-code-to-make-change-in/m-p/520562#M3699 lpcware 2016-06-15T17:45:44Z Re: Is it possible to write user application code to make change in secondary bootloader flash data? https://community.nxp.com/t5/LPC-Microcontrollers/Is-it-possible-to-write-user-application-code-to-make-change-in/m-p/520563#M3700 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by mc on Fri Mar 27 07:07:12 MST 2015</STRONG><BR /><SPAN>Hi Dhanapal,</SPAN><BR /><SPAN>You will have to erase flash before programming.</SPAN><BR /><SPAN>Do you erase flash before programming flash?</SPAN></BODY></HTML> Wed, 15 Jun 2016 17:45:45 GMT https://community.nxp.com/t5/LPC-Microcontrollers/Is-it-possible-to-write-user-application-code-to-make-change-in/m-p/520563#M3700 lpcware 2016-06-15T17:45:45Z Re: Is it possible to write user application code to make change in secondary bootloader flash data? https://community.nxp.com/t5/LPC-Microcontrollers/Is-it-possible-to-write-user-application-code-to-make-change-in/m-p/520564#M3701 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by dhanapal on Fri Mar 27 07:14:23 MST 2015</STRONG><BR /><SPAN>Thank you very much for your reply,</SPAN><BR /><BR /><SPAN>Yes, I am erasing.</SPAN></BODY></HTML> Wed, 15 Jun 2016 17:45:45 GMT https://community.nxp.com/t5/LPC-Microcontrollers/Is-it-possible-to-write-user-application-code-to-make-change-in/m-p/520564#M3701 lpcware 2016-06-15T17:45:45Z Re: Is it possible to write user application code to make change in secondary bootloader flash data? https://community.nxp.com/t5/LPC-Microcontrollers/Is-it-possible-to-write-user-application-code-to-make-change-in/m-p/520565#M3702 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by mc on Fri Mar 27 08:03:25 MST 2015</STRONG><BR /><SPAN>Hi Dhanapal,</SPAN><BR /><SPAN>You also need to pass correct CPU Clock Frequency (CCLK) in kHz to IAP functions.</SPAN><BR /></BODY></HTML> Wed, 15 Jun 2016 17:45:46 GMT https://community.nxp.com/t5/LPC-Microcontrollers/Is-it-possible-to-write-user-application-code-to-make-change-in/m-p/520565#M3702 lpcware 2016-06-15T17:45:46Z Re: Is it possible to write user application code to make change in secondary bootloader flash data? https://community.nxp.com/t5/LPC-Microcontrollers/Is-it-possible-to-write-user-application-code-to-make-change-in/m-p/520566#M3703 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by dhanapal on Fri Mar 27 08:07:14 MST 2015</STRONG><BR /><SPAN>Greetings,</SPAN><BR /><BR /><SPAN>Already my IAP functions are reading and writing the flash value. So i am using the same function.</SPAN></BODY></HTML> Wed, 15 Jun 2016 17:45:47 GMT https://community.nxp.com/t5/LPC-Microcontrollers/Is-it-possible-to-write-user-application-code-to-make-change-in/m-p/520566#M3703 lpcware 2016-06-15T17:45:47Z Re: Is it possible to write user application code to make change in secondary bootloader flash data? https://community.nxp.com/t5/LPC-Microcontrollers/Is-it-possible-to-write-user-application-code-to-make-change-in/m-p/520567#M3704 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by dhanapal on Fri Mar 27 08:12:42 MST 2015</STRONG><BR /><SPAN>Hi,</SPAN><BR /><BR /><SPAN>For IAP functions i am passing 100KHZ.</SPAN></BODY></HTML> Wed, 15 Jun 2016 17:45:47 GMT https://community.nxp.com/t5/LPC-Microcontrollers/Is-it-possible-to-write-user-application-code-to-make-change-in/m-p/520567#M3704 lpcware 2016-06-15T17:45:47Z Re: Is it possible to write user application code to make change in secondary bootloader flash data? https://community.nxp.com/t5/LPC-Microcontrollers/Is-it-possible-to-write-user-application-code-to-make-change-in/m-p/520568#M3705 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by mc on Fri Mar 27 09:14:00 MST 2015</STRONG><BR /><SPAN>Hi dhanapal,</SPAN><BR /><SPAN>It should be SystemFrequency/1000. </SPAN><BR /><SPAN>What is the SystemFrequency?</SPAN></BODY></HTML> Wed, 15 Jun 2016 17:45:48 GMT https://community.nxp.com/t5/LPC-Microcontrollers/Is-it-possible-to-write-user-application-code-to-make-change-in/m-p/520568#M3705 lpcware 2016-06-15T17:45:48Z Re: Is it possible to write user application code to make change in secondary bootloader flash data? https://community.nxp.com/t5/LPC-Microcontrollers/Is-it-possible-to-write-user-application-code-to-make-change-in/m-p/520569#M3706 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by dhanapal on Sun Mar 29 22:05:02 MST 2015</STRONG><BR /><SPAN>Hi,</SPAN><BR /><BR /><SPAN>My system frequency is 100MHZ.</SPAN><BR /><BR /><SPAN>-Dhanapal</SPAN></BODY></HTML> Wed, 15 Jun 2016 17:45:48 GMT https://community.nxp.com/t5/LPC-Microcontrollers/Is-it-possible-to-write-user-application-code-to-make-change-in/m-p/520569#M3706 lpcware 2016-06-15T17:45:48Z