Firmware: chunked sending

lib/basic/Dtypes.h

@@ -1,3 +1,5 @@
+#pragma once
+
 inline void _assert(const char* expression, const char* message, const char* file, int line)
 {
     Serial.print("Assert ");
@@ -7,6 +9,7 @@ inline void _assert(const char* expression, const char* message, const char* fil
     Serial.print("  '");
     Serial.print(expression);
     Serial.println("' failed.");
+    Serial.println(message);
 }
 
 template< typename T>

lib/basic/MockDtypes.h

@@ -1,3 +1,5 @@
+#pragma once
+
 #include <string>
 #include <cstdint>
 #include <cstring>