https://community.nxp.com/t5/MPC5xxx/CAN-FlexCAN-Loopback-test/m-p/1432900#M20752 <P>Hi:</P><P>I am modify examples both in "can_pal_mpc5748G" and "flexcan_mpc5748G" from SDA_PA_RTM_V3.0.3 to perform loopback test.&nbsp; However, it does not seem to work.&nbsp;</P><P>&nbsp;</P><P>For loopback mode, I changed the operation mode to "Loop Back" in CAN/FLEXCAN component.&nbsp; Also, I created a timer interrupt to send out the CAN message every 2 seconds.&nbsp; But, there is no message being loop back from Rx end.</P><P>&nbsp;</P><P>Did do something wrong????</P><P>&nbsp;</P><P>Thanks</P><P>James&nbsp;</P> Wed, 23 Mar 2022 20:26:30 GMT karma_JC 2022-03-23T20:26:30Z https://community.nxp.com/t5/MPC5xxx/CAN-FlexCAN-Loopback-test/m-p/1432900#M20752 <P>Hi:</P><P>I am modify examples both in "can_pal_mpc5748G" and "flexcan_mpc5748G" from SDA_PA_RTM_V3.0.3 to perform loopback test.&nbsp; However, it does not seem to work.&nbsp;</P><P>&nbsp;</P><P>For loopback mode, I changed the operation mode to "Loop Back" in CAN/FLEXCAN component.&nbsp; Also, I created a timer interrupt to send out the CAN message every 2 seconds.&nbsp; But, there is no message being loop back from Rx end.</P><P>&nbsp;</P><P>Did do something wrong????</P><P>&nbsp;</P><P>Thanks</P><P>James&nbsp;</P> Wed, 23 Mar 2022 20:26:30 GMT https://community.nxp.com/t5/MPC5xxx/CAN-FlexCAN-Loopback-test/m-p/1432900#M20752 karma_JC 2022-03-23T20:26:30Z https://community.nxp.com/t5/MPC5xxx/CAN-FlexCAN-Loopback-test/m-p/1433304#M20762 <P>Hi,</P> <P>loopback mode is normally functional. Do you have set a receive message buffer to receive transmitted ID? In example easily have same value for both&nbsp;TX_MSG_ID and RX_MSG_ID.</P> <P>BR, Petr</P> Thu, 24 Mar 2022 08:35:16 GMT https://community.nxp.com/t5/MPC5xxx/CAN-FlexCAN-Loopback-test/m-p/1433304#M20762 PetrS 2022-03-24T08:35:16Z