https://community.nxp.com/t5/MPC5xxx/Signal-ATRIG-of-eQADC-is-barely-documented-Where-to-find-the/m-p/1357195#M19391 <P>SIU_ISEL4-7 chooses normal trigger (ETRIG) but this is also repeat trigger in streaming mode.</P> <P>SIU_ISEL9 selects Advance Trigger Source - this is basically ATRIG signal. As external signal ATRIG is not present with this device.</P> Mon, 18 Oct 2021 12:28:20 GMT davidtosenovjan 2021-10-18T12:28:20Z https://community.nxp.com/t5/MPC5xxx/Signal-ATRIG-of-eQADC-is-barely-documented-Where-to-find-the/m-p/1356741#M19383 <P>Dear NXP Team,</P><P>I'm currently making an I/O driver for the eQADC of the MPC5775B/E and I<BR />want to make use of the streaming mode with CFIFO0. The documentation<BR />(Reference Manual MPC5775E, Rev. 1, 05/2018, section 29) explains the need<BR />of an Advance Trigger to start the streaming loop controlled by the normal<BR />trigger (ETRIG). The entire section doesn't tell anything about where the<BR />two trigger signals come from.</P><P>Ibid, sections 8.2.18f, SIU_ISEL4/5, describe multiplexers for choosing a<BR />trigger signal for the command FIFOs but it looks much as if this relates<BR />only to the normal trigger input ETRIG.</P><P>The entire reference manual (including Excel I/O attachment) has no<BR />matches for "atrig" or "atrig0" outside of section 29, so I'm stuck.</P><P>Where do I find the information how to select an appropriate ATRIG signal?</P><P>How can I otherwise start the streaming mode?</P><P>The eQADC samples I found at<BR /><A href="https://community.nxp.com/t5/MPC5xxx-Knowledge-Base/MPC5-software-example-list/ta-p/1102445#MPC5777C" target="_blank">https://community.nxp.com/t5/MPC5xxx-Knowledge-Base/MPC5-software-example-list/ta-p/1102445#MPC5777C</A><BR />seem to all use the simple software trigger only. Is there a sample for<BR />the streaming mode, too?</P><P>Kind regards,<BR />Peter</P> Sun, 17 Oct 2021 15:00:30 GMT https://community.nxp.com/t5/MPC5xxx/Signal-ATRIG-of-eQADC-is-barely-documented-Where-to-find-the/m-p/1356741#M19383 peter_vranken 2021-10-17T15:00:30Z https://community.nxp.com/t5/MPC5xxx/Signal-ATRIG-of-eQADC-is-barely-documented-Where-to-find-the/m-p/1357195#M19391 <P>SIU_ISEL4-7 chooses normal trigger (ETRIG) but this is also repeat trigger in streaming mode.</P> <P>SIU_ISEL9 selects Advance Trigger Source - this is basically ATRIG signal. As external signal ATRIG is not present with this device.</P> Mon, 18 Oct 2021 12:28:20 GMT https://community.nxp.com/t5/MPC5xxx/Signal-ATRIG-of-eQADC-is-barely-documented-Where-to-find-the/m-p/1357195#M19391 davidtosenovjan 2021-10-18T12:28:20Z https://community.nxp.com/t5/MPC5xxx/Signal-ATRIG-of-eQADC-is-barely-documented-Where-to-find-the/m-p/1363336#M19484 <P>Thanks a lot, got it. Driver is running well meanwhile</P><P>Peter</P> Thu, 28 Oct 2021 13:53:35 GMT https://community.nxp.com/t5/MPC5xxx/Signal-ATRIG-of-eQADC-is-barely-documented-Where-to-find-the/m-p/1363336#M19484 peter_vranken 2021-10-28T13:53:35Z