topic Re: K70 spi dma in MQX Software Solutions https://community.nxp.com/t5/MQX-Software-Solutions/K70-spi-dma/m-p/235298#M6530 <HTML><HEAD></HEAD><BODY><DIV><P>Hello,</P><P></P><P>In the MQX 4.0.2 SPI driver uses DMA by default.</P><P></P><P>See release notes document:</P><P></P><P class="Default"></P><P class="Default" style="margin-bottom:7.45pt"><SPAN style="font-size:11.0pt">Introduced the first version of <SPAN class="SpellE">eDMA</SPAN> driver - the driver is experimental and will be further extended in the next MQX version. Documentation is not provided.</SPAN></P><P class="Default" style="margin-bottom:7.45pt"><SPAN style="font-size:11.0pt">Kinetis SPI driver was updated to use the <SPAN class="SpellE">eDMA</SPAN> driver.</SPAN></P><P class="Default" style="margin-bottom:7.45pt"></P><P class="Default"><STRONG><SPAN style="font-size:11.0pt">SPI I/O Driver</SPAN></STRONG> </P><P class="Default" style="margin-bottom:7.45pt"><SPAN style="font-size:11.0pt">This driver supports the operation master mode. If enabled in user configuration, the SPI device drivers are installed during the BSP startup code as "<STRONG>spi0:</STRONG>” (or "<SPAN class="SpellE"><STRONG>spiX</STRONG></SPAN><STRONG>:</STRONG>” where X is index of the SPI module used). The SPI driver is significantly rewritten in the MQX 4.0, so that there is no distinct interrupt or polled driver type. See <I>I/O User Guide</I> for details. On Kinetis and <SPAN class="SpellE">Vybrid</SPAN> platforms, the driver uses DMA to function.</SPAN></P><P class="Default" style="margin-bottom:7.45pt"></P><P class="Default" style="margin-bottom:7.45pt"><SPAN style="font-size:11.0pt">Luis</SPAN></P><P></P></DIV></BODY></HTML> Fri, 25 Oct 2013 23:26:52 GMT LuisCasado 2013-10-25T23:26:52Z K70 spi dma https://community.nxp.com/t5/MQX-Software-Solutions/K70-spi-dma/m-p/235297#M6529 <HTML><HEAD></HEAD><BODY><P>Are any examples available&nbsp; of SPI operations using DMA? Specifically the K70.</P></BODY></HTML> Fri, 25 Oct 2013 23:14:17 GMT https://community.nxp.com/t5/MQX-Software-Solutions/K70-spi-dma/m-p/235297#M6529 prahsman 2013-10-25T23:14:17Z Re: K70 spi dma https://community.nxp.com/t5/MQX-Software-Solutions/K70-spi-dma/m-p/235298#M6530 <HTML><HEAD></HEAD><BODY><DIV><P>Hello,</P><P></P><P>In the MQX 4.0.2 SPI driver uses DMA by default.</P><P></P><P>See release notes document:</P><P></P><P class="Default"></P><P class="Default" style="margin-bottom:7.45pt"><SPAN style="font-size:11.0pt">Introduced the first version of <SPAN class="SpellE">eDMA</SPAN> driver - the driver is experimental and will be further extended in the next MQX version. Documentation is not provided.</SPAN></P><P class="Default" style="margin-bottom:7.45pt"><SPAN style="font-size:11.0pt">Kinetis SPI driver was updated to use the <SPAN class="SpellE">eDMA</SPAN> driver.</SPAN></P><P class="Default" style="margin-bottom:7.45pt"></P><P class="Default"><STRONG><SPAN style="font-size:11.0pt">SPI I/O Driver</SPAN></STRONG> </P><P class="Default" style="margin-bottom:7.45pt"><SPAN style="font-size:11.0pt">This driver supports the operation master mode. If enabled in user configuration, the SPI device drivers are installed during the BSP startup code as "<STRONG>spi0:</STRONG>” (or "<SPAN class="SpellE"><STRONG>spiX</STRONG></SPAN><STRONG>:</STRONG>” where X is index of the SPI module used). The SPI driver is significantly rewritten in the MQX 4.0, so that there is no distinct interrupt or polled driver type. See <I>I/O User Guide</I> for details. On Kinetis and <SPAN class="SpellE">Vybrid</SPAN> platforms, the driver uses DMA to function.</SPAN></P><P class="Default" style="margin-bottom:7.45pt"></P><P class="Default" style="margin-bottom:7.45pt"><SPAN style="font-size:11.0pt">Luis</SPAN></P><P></P></DIV></BODY></HTML> Fri, 25 Oct 2013 23:26:52 GMT https://community.nxp.com/t5/MQX-Software-Solutions/K70-spi-dma/m-p/235298#M6530 LuisCasado 2013-10-25T23:26:52Z