topic SPI communication establish in S12 / MagniV Microcontrollers https://community.nxp.com/t5/S12-MagniV-Microcontrollers/SPI-communication-establish/m-p/1416166#M18513 <P>Hi,</P><P>I am trying to establish SPI communication between SBC uja 1169a and&nbsp;<SPAN>MC9S12XSP100. I have done as below&nbsp;</SPAN></P><DIV><DIV><SPAN>&nbsp; </SPAN><SPAN>/*Initialize SPI*/</SPAN></DIV><DIV><SPAN>&nbsp; &nbsp; </SPAN><SPAN>SPI1CR1</SPAN><SPAN> = &nbsp;(</SPAN><SPAN>vuint8</SPAN><SPAN>)</SPAN><SPAN>0x52</SPAN><SPAN>; &nbsp; </SPAN><SPAN>/*SPIE SPE SPTIE MSTR CPOL CPHA SSOE LSBFE */</SPAN></DIV><DIV><SPAN>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</SPAN><SPAN>/* 0 &nbsp; &nbsp;1 &nbsp; 0 &nbsp; &nbsp; 1 &nbsp; &nbsp;0 &nbsp; &nbsp; 0 &nbsp; &nbsp;1 &nbsp; &nbsp;0 &nbsp; &nbsp;*/</SPAN></DIV><DIV><SPAN>&nbsp; &nbsp; </SPAN></DIV><DIV><SPAN>&nbsp; &nbsp; </SPAN><SPAN>SPI1CR2</SPAN><SPAN> = &nbsp;(</SPAN><SPAN>vuint8</SPAN><SPAN>)</SPAN><SPAN>0x52</SPAN><SPAN>; &nbsp; &nbsp; </SPAN><SPAN>/* &nbsp;R &nbsp; XFRW R MODFEN BIDIROE R SPISWAI SPC0 */</SPAN></DIV><DIV><SPAN>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</SPAN><SPAN>/* &nbsp;0 &nbsp; 1 &nbsp; &nbsp;0 &nbsp; &nbsp; 1 &nbsp; &nbsp; &nbsp;0 &nbsp; &nbsp; 0 &nbsp; &nbsp;1 &nbsp; &nbsp;0 */</SPAN></DIV><BR /><DIV><SPAN>&nbsp; &nbsp; </SPAN><SPAN>SPI1BR</SPAN><SPAN> = &nbsp; (</SPAN><SPAN>vuint8</SPAN><SPAN>)</SPAN><SPAN>0x11</SPAN><SPAN>; &nbsp; &nbsp; </SPAN><SPAN>/* &nbsp;R &nbsp;SPPR2 SPPR1 SPPR0 R SPR2 SPR1 SPR0 */</SPAN><SPAN> &nbsp;</SPAN><SPAN>//3.125Mh -8 division</SPAN></DIV><DIV><SPAN>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</SPAN><SPAN>/* &nbsp;0 &nbsp; 0 &nbsp; &nbsp; &nbsp;0 &nbsp; &nbsp; 1 &nbsp; 0 &nbsp; &nbsp;0 &nbsp; &nbsp;0 &nbsp; &nbsp;1 */</SPAN></DIV><DIV>&nbsp;</DIV><DIV><SPAN>But I am grtting 00 from SPIDR while reading from register. Please help me to resolve the issue </SPAN></DIV></DIV> Fri, 18 Feb 2022 19:06:01 GMT VamsiChava 2022-02-18T19:06:01Z SPI communication establish https://community.nxp.com/t5/S12-MagniV-Microcontrollers/SPI-communication-establish/m-p/1416166#M18513 <P>Hi,</P><P>I am trying to establish SPI communication between SBC uja 1169a and&nbsp;<SPAN>MC9S12XSP100. I have done as below&nbsp;</SPAN></P><DIV><DIV><SPAN>&nbsp; </SPAN><SPAN>/*Initialize SPI*/</SPAN></DIV><DIV><SPAN>&nbsp; &nbsp; </SPAN><SPAN>SPI1CR1</SPAN><SPAN> = &nbsp;(</SPAN><SPAN>vuint8</SPAN><SPAN>)</SPAN><SPAN>0x52</SPAN><SPAN>; &nbsp; </SPAN><SPAN>/*SPIE SPE SPTIE MSTR CPOL CPHA SSOE LSBFE */</SPAN></DIV><DIV><SPAN>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</SPAN><SPAN>/* 0 &nbsp; &nbsp;1 &nbsp; 0 &nbsp; &nbsp; 1 &nbsp; &nbsp;0 &nbsp; &nbsp; 0 &nbsp; &nbsp;1 &nbsp; &nbsp;0 &nbsp; &nbsp;*/</SPAN></DIV><DIV><SPAN>&nbsp; &nbsp; </SPAN></DIV><DIV><SPAN>&nbsp; &nbsp; </SPAN><SPAN>SPI1CR2</SPAN><SPAN> = &nbsp;(</SPAN><SPAN>vuint8</SPAN><SPAN>)</SPAN><SPAN>0x52</SPAN><SPAN>; &nbsp; &nbsp; </SPAN><SPAN>/* &nbsp;R &nbsp; XFRW R MODFEN BIDIROE R SPISWAI SPC0 */</SPAN></DIV><DIV><SPAN>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</SPAN><SPAN>/* &nbsp;0 &nbsp; 1 &nbsp; &nbsp;0 &nbsp; &nbsp; 1 &nbsp; &nbsp; &nbsp;0 &nbsp; &nbsp; 0 &nbsp; &nbsp;1 &nbsp; &nbsp;0 */</SPAN></DIV><BR /><DIV><SPAN>&nbsp; &nbsp; </SPAN><SPAN>SPI1BR</SPAN><SPAN> = &nbsp; (</SPAN><SPAN>vuint8</SPAN><SPAN>)</SPAN><SPAN>0x11</SPAN><SPAN>; &nbsp; &nbsp; </SPAN><SPAN>/* &nbsp;R &nbsp;SPPR2 SPPR1 SPPR0 R SPR2 SPR1 SPR0 */</SPAN><SPAN> &nbsp;</SPAN><SPAN>//3.125Mh -8 division</SPAN></DIV><DIV><SPAN>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</SPAN><SPAN>/* &nbsp;0 &nbsp; 0 &nbsp; &nbsp; &nbsp;0 &nbsp; &nbsp; 1 &nbsp; 0 &nbsp; &nbsp;0 &nbsp; &nbsp;0 &nbsp; &nbsp;1 */</SPAN></DIV><DIV>&nbsp;</DIV><DIV><SPAN>But I am grtting 00 from SPIDR while reading from register. Please help me to resolve the issue </SPAN></DIV></DIV> Fri, 18 Feb 2022 19:06:01 GMT https://community.nxp.com/t5/S12-MagniV-Microcontrollers/SPI-communication-establish/m-p/1416166#M18513 VamsiChava 2022-02-18T19:06:01Z