AP_Arming: log key @SYS files on arming

libraries/AP_Arming/AP_Arming.cpp

@@ -1348,6 +1348,25 @@ bool AP_Arming::arm(AP_Arming::Method method, const bool do_arming_checks)
         armed = false;
     }
 
+#if HAL_LOGGER_FILE_CONTENTS_ENABLED
+    /*
+      log files useful for diagnostics on arming. We log on arming as
+      with LOG_DISARMED we don't want to log the statistics at boot or
+      we wouldn't get a realistic idea of key system values
+      Note that some of these files may not exist, in that case they
+      are ignored
+     */
+    static const char *log_content_filenames[] = {
+        "@SYS/uarts.txt",
+        "@SYS/dma.txt",
+        "@SYS/memory.txt",
+        "@SYS/threads.txt",
+        "@ROMFS/hwdef.dat",
+    };
+    for (const auto *name : log_content_filenames) {
+        AP::logger().log_file_content(name);
+    }
+#endif
     return armed;
 }