modified to also read channel B

RotaxMonitor/src/utils.h

@@ -2,5 +2,12 @@
 
 #include <Arduino.h>
 #include <string>
+#include <datastruct.h>
 
 std::string printBits(uint32_t value);
+
+inline void swapHistory(PSRAMVector<ignitionBoxStatus>* active, PSRAMVector<ignitionBoxStatus>* writable) {
+    auto *temp = active;
+    active = writable; // switch active and writable buffers
+    writable = temp;   // ensure writable_history points to the buffer we just filled
+}