https://community.nxp.com/t5/i-MX-Processors/imx8mp-ecspi-slave-mode/m-p/1464541#M190852 <P><SPAN>Hi All</SPAN></P><P><SPAN>I am currently working on imx8mp ECSPI-Slave and&nbsp;</SPAN><STRONG>I am able to communicate with Master.</STRONG></P><P class=""><SPAN class="">My test program runs on the M7 core side, the SDK version I use is SDK_2_11_1_EVK-MIMx8mp. I am suitable to configure imx8MP ecspi2(bursh_length=8) with the default slave parameter and enable RxFifoReady interrupt to ECSPI.</SPAN><SPAN class=""> When the master sends eight bytes (0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88) to the slave,</SPAN><SPAN class=""> The data received by the slave is 0x00,0x00,0x00,0x11, 0x22, 0x33, 0x44, 0x55. The first three bytes received are all 0x00.</SPAN></P><P class=""><SPAN class="">When I change the default configuration of the slave(set bursh_length to 32), the data received by the slave is 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88.</SPAN><SPAN class=""> I do not know why can appear this kind of circumstance, hope the expert gives explanation, thanks.</SPAN></P><P class=""><SPAN class="">If I want to configure slave to receive byte by byte, how should I configure it?</SPAN></P><P>&nbsp;</P> Thu, 26 May 2022 07:00:51 GMT guangwei 2022-05-26T07:00:51Z https://community.nxp.com/t5/i-MX-Processors/imx8mp-ecspi-slave-mode/m-p/1464541#M190852 <P><SPAN>Hi All</SPAN></P><P><SPAN>I am currently working on imx8mp ECSPI-Slave and&nbsp;</SPAN><STRONG>I am able to communicate with Master.</STRONG></P><P class=""><SPAN class="">My test program runs on the M7 core side, the SDK version I use is SDK_2_11_1_EVK-MIMx8mp. I am suitable to configure imx8MP ecspi2(bursh_length=8) with the default slave parameter and enable RxFifoReady interrupt to ECSPI.</SPAN><SPAN class=""> When the master sends eight bytes (0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88) to the slave,</SPAN><SPAN class=""> The data received by the slave is 0x00,0x00,0x00,0x11, 0x22, 0x33, 0x44, 0x55. The first three bytes received are all 0x00.</SPAN></P><P class=""><SPAN class="">When I change the default configuration of the slave(set bursh_length to 32), the data received by the slave is 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88.</SPAN><SPAN class=""> I do not know why can appear this kind of circumstance, hope the expert gives explanation, thanks.</SPAN></P><P class=""><SPAN class="">If I want to configure slave to receive byte by byte, how should I configure it?</SPAN></P><P>&nbsp;</P> Thu, 26 May 2022 07:00:51 GMT https://community.nxp.com/t5/i-MX-Processors/imx8mp-ecspi-slave-mode/m-p/1464541#M190852 guangwei 2022-05-26T07:00:51Z