Thans to copilot, microsecond resolution to wait for spark.

no missing firings detected

RotaxMonitor/src/main.cpp

@@ -12,14 +12,16 @@
 #include <devices.h>
 #include <ui.h>
 
+// FreeRTOS directives
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+
 // #define CH_B_ENABLE
 #define TEST
 
-void printTaskList()
-{
+void printTaskStats() {
     char buffer[1024];
-    Serial.println("Task Name\tState\tPrio\tStack\tNum");
-    vTaskList(buffer);
+    vTaskGetRunTimeStats(buffer);
     Serial.println(buffer);
 }
 
@@ -174,6 +176,7 @@ void loop()
     int64_t last = esp_timer_get_time();
     uint32_t missed_firings12 = 0;
     uint32_t missed_firings34 = 0;
+    uint32_t counter = 0;
 
     while (running)
     {
@@ -217,9 +220,7 @@ void loop()
             last = esp_timer_get_time();
         } else
         {
-            setCursor(0, 22);
-            Serial.print("Waiting for data... ");;
-            Serial.flush();
+            Serial.println("Waiting for data... ");;
         }
     }