https://community.nxp.com/t5/LPC-Microcontrollers/LPC5504-FLASH-READ/m-p/1876762#M56163 <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="jacklin_123_0-1716953217747.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/281268i55F3B23BFD75D4F0/image-size/medium?v=v2&amp;px=400" role="button" title="jacklin_123_0-1716953217747.png" alt="jacklin_123_0-1716953217747.png" /></span><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="jacklin_123_1-1716953231105.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/281269i1D986140ECFB5249/image-size/medium?v=v2&amp;px=400" role="button" title="jacklin_123_1-1716953231105.png" alt="jacklin_123_1-1716953231105.png" /></span></P><P>FLASH RANGE :0X0 - 0X20000</P><P>if i read the value of this address, The program will enter the HardFault interrupt function.</P><P>Every other chip I've ever used can read the data, as long as its address is in flash range</P><P>Why is LPC5504 an exception.</P><P>Has anyone come across it? Please help me. Thank you</P><P>&nbsp;</P> Wed, 29 May 2024 03:36:58 GMT jacklin_123 2024-05-29T03:36:58Z https://community.nxp.com/t5/LPC-Microcontrollers/LPC5504-FLASH-READ/m-p/1876762#M56163 <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="jacklin_123_0-1716953217747.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/281268i55F3B23BFD75D4F0/image-size/medium?v=v2&amp;px=400" role="button" title="jacklin_123_0-1716953217747.png" alt="jacklin_123_0-1716953217747.png" /></span><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="jacklin_123_1-1716953231105.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/281269i1D986140ECFB5249/image-size/medium?v=v2&amp;px=400" role="button" title="jacklin_123_1-1716953231105.png" alt="jacklin_123_1-1716953231105.png" /></span></P><P>FLASH RANGE :0X0 - 0X20000</P><P>if i read the value of this address, The program will enter the HardFault interrupt function.</P><P>Every other chip I've ever used can read the data, as long as its address is in flash range</P><P>Why is LPC5504 an exception.</P><P>Has anyone come across it? Please help me. Thank you</P><P>&nbsp;</P> Wed, 29 May 2024 03:36:58 GMT https://community.nxp.com/t5/LPC-Microcontrollers/LPC5504-FLASH-READ/m-p/1876762#M56163 jacklin_123 2024-05-29T03:36:58Z https://community.nxp.com/t5/LPC-Microcontrollers/LPC5504-FLASH-READ/m-p/1877970#M56172 <P>Hi <a href="https://community.nxp.com/t5/user/viewprofilepage/user-id/231552">@jacklin_123</a>&nbsp;</P> <P>May I ask if you have erased the flash and read it directly?</P> <P>If so, please refer to this.</P> <P><A href="https://community.nxp.com/t5/LPC-Microcontrollers-Knowledge/LPC55xx-How-to-fix-AHB-Read-HardFault-Error/ta-p/1127260" target="_blank">[LPC55xx] How to fix AHB Read HardFault Error - NXP Community</A></P> <P>Hope this will help you.</P> <P>BR</P> <P>Hang</P> Thu, 30 May 2024 07:19:40 GMT https://community.nxp.com/t5/LPC-Microcontrollers/LPC5504-FLASH-READ/m-p/1877970#M56172 Harry_Zhang 2024-05-30T07:19:40Z