topic Re: LPC1343 Problem write to Flash with IAP command in LPCXpresso IDE https://community.nxp.com/t5/LPCXpresso-IDE/LPC1343-Problem-write-to-Flash-with-IAP-command/m-p/541917#M7614 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by tungsys on Thu May 05 19:46:01 MST 2011</STRONG><BR /><SPAN>anybody can give me some advices on this problem ? </SPAN><BR /><SPAN>thank you very much !</SPAN></BODY></HTML> Wed, 15 Jun 2016 21:58:39 GMT lpcware 2016-06-15T21:58:39Z LPC1343 Problem write to Flash with IAP command https://community.nxp.com/t5/LPCXpresso-IDE/LPC1343-Problem-write-to-Flash-with-IAP-command/m-p/541916#M7613 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by tungsys on Sun May 01 11:43:41 MST 2011</STRONG><BR /><SPAN>Hi all,</SPAN><BR /><BR /><SPAN>In order to write to flash with IAP command, do i need to follow these steps: </SPAN><BR /><BR /><SPAN>Prepare - Erase - Prepare - Write</SPAN><BR /><BR /><SPAN>Can i just Prepare - Write without Erase step ?</SPAN><BR /><BR /><SPAN>I look into the user manual but they did not mention the step how to write to Flash.</SPAN><BR /><BR /><SPAN>My actual problem is i have 2 arrays 128 bytes need to write into 1 block in flash at difference time. So if i write arrays1 first then i write array2, the data in array1 will be gone because i follow the 1st step, need to erase every time write. Can i write to flash without erase command ?</SPAN></BODY></HTML> Wed, 15 Jun 2016 21:58:38 GMT https://community.nxp.com/t5/LPCXpresso-IDE/LPC1343-Problem-write-to-Flash-with-IAP-command/m-p/541916#M7613 lpcware 2016-06-15T21:58:38Z Re: LPC1343 Problem write to Flash with IAP command https://community.nxp.com/t5/LPCXpresso-IDE/LPC1343-Problem-write-to-Flash-with-IAP-command/m-p/541917#M7614 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by tungsys on Thu May 05 19:46:01 MST 2011</STRONG><BR /><SPAN>anybody can give me some advices on this problem ? </SPAN><BR /><SPAN>thank you very much !</SPAN></BODY></HTML> Wed, 15 Jun 2016 21:58:39 GMT https://community.nxp.com/t5/LPCXpresso-IDE/LPC1343-Problem-write-to-Flash-with-IAP-command/m-p/541917#M7614 lpcware 2016-06-15T21:58:39Z Re: LPC1343 Problem write to Flash with IAP command https://community.nxp.com/t5/LPCXpresso-IDE/LPC1343-Problem-write-to-Flash-with-IAP-command/m-p/541918#M7615 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by george079 on Thu May 05 21:27:35 MST 2011</STRONG><BR /><SPAN>Hi tungsys,</SPAN><BR /><BR /><SPAN>To change bit 0 to bit 1 in flash, there is only "ERASE" could do that.</SPAN><BR /><SPAN>And in LPC1343, Erasing memory is on a per-sector basis .( says in </SPAN><A href="http://http://ics.nxp.com/support/documents/microcontrollers/zip/an11008.zip">AN11008</A><SPAN> )</SPAN><BR /><BR /><SPAN>So you always your another array after you ERASE ,unless using different sector in flash. </SPAN><BR /><BR /><SPAN>Also AN11008 is a good reference for use FLASH as EEPROM.</SPAN><BR /><BR /><SPAN>george</SPAN><BR /><BR /><BR /><HR /><SPAN style="color: #0000ff;"><STRONG>Quote: tungsys</STRONG><BR />Hi all,<BR /><BR />In order to write to flash with IAP command, do i need to follow these steps: <BR /><BR />Prepare - Erase - Prepare - Write<BR /><BR />Can i just Prepare - Write without Erase step ?<BR /><BR />I look into the user manual but they did not mention the step how to write to Flash.<BR /><BR />My actual problem is i have 2 arrays 128 bytes need to write into 1 block in flash at difference time. So if i write arrays1 first then i write array2, the data in array1 will be gone because i follow the 1st step, need to erase every time write. Can i write to flash without erase command ?</SPAN><HR /></BODY></HTML> Wed, 15 Jun 2016 21:58:40 GMT https://community.nxp.com/t5/LPCXpresso-IDE/LPC1343-Problem-write-to-Flash-with-IAP-command/m-p/541918#M7615 lpcware 2016-06-15T21:58:40Z