topic Unexpected DMA Behaviour with LPC1778 Two in LPC Microcontrollers https://community.nxp.com/t5/LPC-Microcontrollers/Unexpected-DMA-Behaviour-with-LPC1778-Two/m-p/518800#M2864 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by MikeSimmonds on Mon Jan 14 22:18:35 MST 2013</STRONG><BR /><SPAN>I'm using LPCXpresso 4.3 to debug (because I am not convinced of v5 stability yet) on WinXP Prof SP3 (32 bit)</SPAN><BR /><SPAN>LPC1778 Custom PCB</SPAN><BR /><BR /><SPAN>I forgot to set the EnableDMA bit in the FIFO register when I set up my uart (Uart0)</SPAN><BR /><SPAN>Then I setup the RX DMA channel as if I had.</SPAN><BR /><BR /><SPAN>The surprising thing is that the RX DMA is working as expected -- i.e. received characters can be seen in the DMA</SPAN><BR /><SPAN>buffer.</SPAN><BR /><BR /><SPAN>Can anyone explain this or othwerwise shed light on the issue.</SPAN><BR /><BR /><SPAN>See also my thread "Unexpected DMA Behaviour with LPC1778".</SPAN><BR /><BR /><SPAN>Mike</SPAN><BR /></BODY></HTML> Wed, 15 Jun 2016 17:35:36 GMT lpcware 2016-06-15T17:35:36Z Unexpected DMA Behaviour with LPC1778 Two https://community.nxp.com/t5/LPC-Microcontrollers/Unexpected-DMA-Behaviour-with-LPC1778-Two/m-p/518800#M2864 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by MikeSimmonds on Mon Jan 14 22:18:35 MST 2013</STRONG><BR /><SPAN>I'm using LPCXpresso 4.3 to debug (because I am not convinced of v5 stability yet) on WinXP Prof SP3 (32 bit)</SPAN><BR /><SPAN>LPC1778 Custom PCB</SPAN><BR /><BR /><SPAN>I forgot to set the EnableDMA bit in the FIFO register when I set up my uart (Uart0)</SPAN><BR /><SPAN>Then I setup the RX DMA channel as if I had.</SPAN><BR /><BR /><SPAN>The surprising thing is that the RX DMA is working as expected -- i.e. received characters can be seen in the DMA</SPAN><BR /><SPAN>buffer.</SPAN><BR /><BR /><SPAN>Can anyone explain this or othwerwise shed light on the issue.</SPAN><BR /><BR /><SPAN>See also my thread "Unexpected DMA Behaviour with LPC1778".</SPAN><BR /><BR /><SPAN>Mike</SPAN><BR /></BODY></HTML> Wed, 15 Jun 2016 17:35:36 GMT https://community.nxp.com/t5/LPC-Microcontrollers/Unexpected-DMA-Behaviour-with-LPC1778-Two/m-p/518800#M2864 lpcware 2016-06-15T17:35:36Z