diff --git a/RFLink/99_helper.cpp b/RFLink/99_helper.cpp
index 7d2a5a3..db0893e 100644
--- a/RFLink/99_helper.cpp
+++ b/RFLink/99_helper.cpp
@@ -18,5 +18,26 @@ void SerialPrint(int value)
     Serial.print(value);
 }
 
+void SerialPrintFreeHeap()
+{
+    Serial.print(ESP.getFreeHeap());
+}
+
+void SerialPrintMaxAllocHeap()
+{
+    Serial.print(ESP.getMaxAllocHeap());
+}
+
+void SerialPrintFreeMemInfo()
+{
+    Serial.print("8bit aligned, Free = ");
+    Serial.print(heap_caps_get_free_size(MALLOC_CAP_INTERNAL | MALLOC_CAP_8BIT));
+    Serial.print(", Max block = ");
+    Serial.print(heap_caps_get_largest_free_block(MALLOC_CAP_INTERNAL | MALLOC_CAP_8BIT));
+    Serial.print(", 32bit aligned, Free = ");
+    Serial.print(heap_caps_get_free_size(MALLOC_CAP_INTERNAL | MALLOC_CAP_32BIT));
+    Serial.print(", Max block = ");
+    Serial.print(heap_caps_get_largest_free_block(MALLOC_CAP_INTERNAL | MALLOC_CAP_32BIT));
+}
 
 }
diff --git a/RFLink/99_helper.h b/RFLink/99_helper.h
index 8121f50..155fc1b 100644
--- a/RFLink/99_helper.h
+++ b/RFLink/99_helper.h
@@ -12,6 +12,9 @@ extern "C" {
 void SerialPrintLn(const char* msg);
 void SerialPrintMsg(const char* msg);
 void SerialPrint(int value);
+void SerialPrintFreeHeap();
+void SerialPrintMaxAllocHeap();
+void SerialPrintFreeMemInfo();
 #ifdef __cplusplus
 }
 #endif