From 536c64a4989ab1f0f493b307fe873c6588686849 Mon Sep 17 00:00:00 2001
From: iabdalkader <i.abdalkader@gmail.com>
Date: Thu, 2 Mar 2023 13:27:19 +0100
Subject: [PATCH] Fix library build for the M4 core.

---
 src/Arduino_AdvancedAnalog.h | 4 ----
 src/DMABuffer.h              | 4 ++++
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/Arduino_AdvancedAnalog.h b/src/Arduino_AdvancedAnalog.h
index 6aec2b3..f654650 100644
--- a/src/Arduino_AdvancedAnalog.h
+++ b/src/Arduino_AdvancedAnalog.h
@@ -24,10 +24,6 @@
  * INCLUDE
  **************************************************************************************/
 
-#ifdef ARDUINO_PORTENTA_H7_M4
-# error "This library only works on the M7 core of any STM32H747 based board (Portenta H7, Giga)."
-#endif
-
 #include "AdvancedADC.h"
 #include "AdvancedDAC.h"
 
diff --git a/src/DMABuffer.h b/src/DMABuffer.h
index ac85ccd..0f495df 100644
--- a/src/DMABuffer.h
+++ b/src/DMABuffer.h
@@ -92,15 +92,19 @@ template <class T, size_t A=__SCB_DCACHE_LINE_SIZE> class DMABuffer {
         }
 
         void flush() {
+            #if __DCACHE_PRESENT
             if (ptr) {
                 SCB_CleanDCache_by_Addr(data(), bytes());
             }
+            #endif
         }
 
         void invalidate() {
+            #if __DCACHE_PRESENT
             if (ptr) {
                 SCB_InvalidateDCache_by_Addr(data(), bytes());
             }
+            #endif
         }
 
         uint32_t timestamp() {