https://community.nxp.com/t5/S32K/S32K344-SPI/m-p/1730376#M27431 <P>&nbsp;</P><P>The SPI pin config as following:</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="YXE_1-1695807299821.png" style="width: 999px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/242884iF05E29417931878C/image-size/large?v=v2&amp;px=999" role="button" title="YXE_1-1695807299821.png" alt="YXE_1-1695807299821.png" /></span></P><P>I have tried change the cs0 and clk to Pull up mode and change the init value to high, but still not work .</P><P>&nbsp;</P> Wed, 27 Sep 2023 09:37:47 GMT YXE 2023-09-27T09:37:47Z https://community.nxp.com/t5/S32K/S32K344-SPI/m-p/1728803#M27358 <P>我现在调试344的SPI 功能， 但是如果我选择CPOL 为高电平的话 ，则每次时钟信号会有一个下降沿的 杂波。 是不是配置问题啊？ 还是底层驱动问题？</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="YXE_0-1695634121366.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/242511i45916B39F815FBB6/image-size/medium?v=v2&amp;px=400" role="button" title="YXE_0-1695634121366.png" alt="YXE_0-1695634121366.png" /></span></P><P>如上图所示，红色框就是多余的波形。我发送的数据是0XCD， CPHA 1 选择第二个边沿采样。红色的框就是多余的波形 不知道怎么产生的？？？</P><P>SPI配置如下：</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="YXE_1-1695634284109.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/242512i88144AE7ADDDB01E/image-size/medium?v=v2&amp;px=400" role="button" title="YXE_1-1695634284109.png" alt="YXE_1-1695634284109.png" /></span></P><P>&nbsp;</P><P>&nbsp;</P> Mon, 25 Sep 2023 09:31:40 GMT https://community.nxp.com/t5/S32K/S32K344-SPI/m-p/1728803#M27358 YXE 2023-09-25T09:31:40Z https://community.nxp.com/t5/S32K/S32K344-SPI/m-p/1729785#M27401 <P>Hi,</P> <P>it could due to pin init. Try to show PCS0 signal as well, to know if connected device is selected or not.<BR />Try to modify Cs2Clk parameter as well, or others too.<BR />Is a datawidth=1 intended setting. I expect rather 8 to send a byte per single transfer.</P> <P>BR, Petr</P> Tue, 26 Sep 2023 13:38:59 GMT https://community.nxp.com/t5/S32K/S32K344-SPI/m-p/1729785#M27401 PetrS 2023-09-26T13:38:59Z https://community.nxp.com/t5/S32K/S32K344-SPI/m-p/1730376#M27431 <P>&nbsp;</P><P>The SPI pin config as following:</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="YXE_1-1695807299821.png" style="width: 999px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/242884iF05E29417931878C/image-size/large?v=v2&amp;px=999" role="button" title="YXE_1-1695807299821.png" alt="YXE_1-1695807299821.png" /></span></P><P>I have tried change the cs0 and clk to Pull up mode and change the init value to high, but still not work .</P><P>&nbsp;</P> Wed, 27 Sep 2023 09:37:47 GMT https://community.nxp.com/t5/S32K/S32K344-SPI/m-p/1730376#M27431 YXE 2023-09-27T09:37:47Z