diff --git a/src/main_osp.cc b/src/main_osp.cc
index 127ce2f..55b0fc8 100644
--- a/src/main_osp.cc
+++ b/src/main_osp.cc
@@ -211,7 +211,7 @@ namespace Heck {
     void mainloop()
     {
         hw.PrintLine("Entering MainLoop");
-        u32 systick_now{};
+        u32 time_boot_ms{};
         u32 midi_log_systick_last{};
 
         bool heartbeat_led_state{ false };
@@ -224,6 +224,47 @@ namespace Heck {
             hw.SetLed(heartbeat_led_state);
         });
 
+        SWTimer async_log_tx{};
+        async_log_tx.set_period(5);
+        async_log_tx.set_callback([time_boot_ms](){
+            if (!event_log.IsEmpty()) {
+                auto msg = event_log.PopFront();
+                switch (msg.type) {
+                    case ld::MidiMessageType::SystemRealTime: {
+                        if constexpr (Constants::Developer::LOG_MIDI_REALTIME) {
+                            char outstr[256];
+                            char rttype_str[32];
+                            GetMidiRTTypeAsString(msg, rttype_str);
+                            sprintf(outstr, "RT: type: %s\n", rttype_str);
+                            if (msg.srt_type != ld::TimingClock) {
+                                hw.PrintLine("%s", outstr);
+                            }
+                        }
+                    } break;
+                    case ld::NoteOn:
+                    case ld::NoteOff:
+                    case ld::MidiMessageType::ControlChange: {
+                        if constexpr (Constants::Developer::LOG_MIDI_NOTESANDCC) {
+                            char outstr[256];
+                            char type_str[32];
+                            GetMidiTypeAsString(msg, type_str);
+                            sprintf(
+                                outstr,
+                                "time-last:\t%ld\ttype: %s\tChannel:  %d\tData MSB: "
+                                "%d\tData LSB: %d\n",
+                                time_boot_ms,
+                                type_str,
+                                msg.channel,
+                                msg.data[0],
+                                msg.data[1]);
+                            hw.PrintLine("%s", outstr);
+                        }
+                    } break;
+                }
+            }
+
+        });
+
         bool but_record_new{ false };
         bool but_record_current{ false };
 
@@ -245,7 +286,7 @@ namespace Heck {
             // if update is different
             // Update state
             // handle change
-            systick_now = ld::System::GetNow();
+            time_boot_ms = ld::System::GetNow();
 
             clock_time_new = clock.tick_infinite();
             if (clock_time_current != clock_time_new) {
@@ -308,46 +349,8 @@ namespace Heck {
                 }
             }
 
-
-            if (systick_now - midi_log_systick_last > 5) {
-                midi_log_systick_last = systick_now;
-                if (!event_log.IsEmpty()) {
-                    auto msg = event_log.PopFront();
-                    switch (msg.type) {
-                        case ld::MidiMessageType::SystemRealTime: {
-                            if (Constants::Developer::LOG_MIDI_REALTIME) {
-                                char outstr[256];
-                                char rttype_str[32];
-                                GetMidiRTTypeAsString(msg, rttype_str);
-                                sprintf(outstr, "RT: type: %s\n", rttype_str);
-                                if (msg.srt_type != ld::TimingClock) {
-                                    hw.PrintLine("%s", outstr);
-                                }
-                            }
-                        } break;
-                        case ld::NoteOn:
-                        case ld::NoteOff:
-                        case ld::MidiMessageType::ControlChange: {
-                            if (Constants::Developer::LOG_MIDI_NOTESANDCC) {
-                                char outstr[256];
-                                char type_str[32];
-                                GetMidiTypeAsString(msg, type_str);
-                                sprintf(
-                                    outstr,
-                                    "time-last:\t%ld\ttype: %s\tChannel:  %d\tData MSB: "
-                                    "%d\tData LSB: %d\n",
-                                    systick_now,
-                                    type_str,
-                                    msg.channel,
-                                    msg.data[0],
-                                    msg.data[1]);
-                                hw.PrintLine("%s", outstr);
-                            }
-                        } break;
-                    }
-                }
-            }
-            heartbeat.is_it_already_time_again(systick_now);
+            async_log_tx.is_it_already_time_again(time_boot_ms);
+            heartbeat.is_it_already_time_again(time_boot_ms);
         }
     }
 } // namespace Heck