LPC Microcontrollersのトピックdual core DMA restriction? https://community.nxp.com/t5/LPC-Microcontrollers/dual-core-DMA-restriction/m-p/565886#M17185 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by jpplus on Sun Jan 11 22:04:19 MST 2015</STRONG><BR /><SPAN>Hi all,</SPAN><BR /><SPAN> I have an audio application running on LPC4337. The I2S and SGPIO will be configured to trigger DMA both on M0 and M4. As I need access DMA controller from two cores, my question are:</SPAN><BR /><SPAN>1) can chip&nbsp; genereates DMA interrupt for DUAL core in same time? </SPAN><BR /><SPAN>2) can I init the DMA controller in one core and use that and generate interrupt in another core?</SPAN><BR /><SPAN>3) can IS2 is init in one core and generate DMA interrupt in another core?</SPAN><BR /><BR /><SPAN>I think DMA only need to be init in one core as there is only one DMA hardware, but can be directly operated from both core.</SPAN><BR /><SPAN>I am new to this chip, but hope to get some hints on this two core DMA stuff.</SPAN><BR /><SPAN> thanks</SPAN></BODY></HTML> Wed, 15 Jun 2016 18:49:03 GMT lpcware 2016-06-15T18:49:03Z dual core DMA restriction? https://community.nxp.com/t5/LPC-Microcontrollers/dual-core-DMA-restriction/m-p/565886#M17185 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by jpplus on Sun Jan 11 22:04:19 MST 2015</STRONG><BR /><SPAN>Hi all,</SPAN><BR /><SPAN> I have an audio application running on LPC4337. The I2S and SGPIO will be configured to trigger DMA both on M0 and M4. As I need access DMA controller from two cores, my question are:</SPAN><BR /><SPAN>1) can chip&nbsp; genereates DMA interrupt for DUAL core in same time? </SPAN><BR /><SPAN>2) can I init the DMA controller in one core and use that and generate interrupt in another core?</SPAN><BR /><SPAN>3) can IS2 is init in one core and generate DMA interrupt in another core?</SPAN><BR /><BR /><SPAN>I think DMA only need to be init in one core as there is only one DMA hardware, but can be directly operated from both core.</SPAN><BR /><SPAN>I am new to this chip, but hope to get some hints on this two core DMA stuff.</SPAN><BR /><SPAN> thanks</SPAN></BODY></HTML> Wed, 15 Jun 2016 18:49:03 GMT https://community.nxp.com/t5/LPC-Microcontrollers/dual-core-DMA-restriction/m-p/565886#M17185 lpcware 2016-06-15T18:49:03Z Re: dual core DMA restriction? https://community.nxp.com/t5/LPC-Microcontrollers/dual-core-DMA-restriction/m-p/565887#M17186 <HTML><HEAD></HEAD><BODY><P><SPAN>I'd like to bump this discussion up as I'm curious about the same thing.</SPAN></P></BODY></HTML> Tue, 03 Oct 2017 16:38:08 GMT https://community.nxp.com/t5/LPC-Microcontrollers/dual-core-DMA-restriction/m-p/565887#M17186 nos1989 2017-10-03T16:38:08Z