Dabao might not be entering deep sleep

        set_phase(&iox, PHASE_DEEP);
        log::info!("deep sleep for {} s", PHASE_SECS);
        set_warm_boot(&keystore, true);
        rtc.set_wakeup(Utc::now() + chrono::Duration::seconds(PHASE_SECS)).ok();
        xous::send_message(
            susres_conn,
            xous::Message::new_scalar(
                susres::api::Opcode::PlatformSpecific.to_usize().unwrap(),
                ClockOp::DeepSleep.to_usize().unwrap(),
                0,
                0,
                0,
            ),
        )
        .ok();
        // deep sleep powers the core down and its RTC wake is a fresh boot, so getting here
        // means it didn't happen; idle out the phase and carry on
        tt.sleep_ms(PHASE_SECS as usize * 1000).ok();
        log::error!("deep sleep didn't happen; continuing the cycle");
        rtc.clear_wakeup();
        set_warm_boot(&keystore, false);
        marker_blink(&iox, &tt);