https://community.nxp.com/t5/LPC-Microcontrollers/LPC845-DMA-write-to-GPIO-fails/m-p/2389301#M59636 <P>It seems LPC845 DMA cannot write GPIO at 0xA0000000</P><P>I get DMA0 -&gt;ERRINT=1 when trying to do the GPIO write.</P><P>As troublehooting step, I changed the dest address to RAM and do not get the ERRINTflag.&nbsp;</P><P>I have not been able to find a definitive source to say if this is truly impossible.</P><P>I did find a reference which is not definitive but hints that this might be the case:<BR /><A href="https://community.nxp.com/t5/LPC-Microcontrollers/Lpc-824-DMA-to-GPIO/m-p/650903" target="_blank" rel="nofollow noopener">https://community.nxp.com/t5/LPC-Microcontrollers/Lpc-824-DMA-to-GPIO/m-p/650903</A></P><P>Can someone please confirm?</P> Wed, 01 Jul 2026 21:56:38 GMT phatpaul 2026-07-01T21:56:38Z https://community.nxp.com/t5/LPC-Microcontrollers/LPC845-DMA-write-to-GPIO-fails/m-p/2389301#M59636 <P>It seems LPC845 DMA cannot write GPIO at 0xA0000000</P><P>I get DMA0 -&gt;ERRINT=1 when trying to do the GPIO write.</P><P>As troublehooting step, I changed the dest address to RAM and do not get the ERRINTflag.&nbsp;</P><P>I have not been able to find a definitive source to say if this is truly impossible.</P><P>I did find a reference which is not definitive but hints that this might be the case:<BR /><A href="https://community.nxp.com/t5/LPC-Microcontrollers/Lpc-824-DMA-to-GPIO/m-p/650903" target="_blank" rel="nofollow noopener">https://community.nxp.com/t5/LPC-Microcontrollers/Lpc-824-DMA-to-GPIO/m-p/650903</A></P><P>Can someone please confirm?</P> Wed, 01 Jul 2026 21:56:38 GMT https://community.nxp.com/t5/LPC-Microcontrollers/LPC845-DMA-write-to-GPIO-fails/m-p/2389301#M59636 phatpaul 2026-07-01T21:56:38Z