Dear All: I aneble the tickless onto M0+ and the idle interrupt can change from 1ms to 100ms captured by LA. But the timestamp of my message to systemview is abnormal.(too long) Need to fine tune the pareamter SYSVIEWTIMESTAMPFREQ and SYSVIEWCPUFREQ.(better) but still can’t get correct timestamp compared with LA. BR, -Hoya

Systemview? Are you talking about the Segger tool? If so, I’m afraid I’m not familiar enough with it so suggest you ask Segger for support.