From b297b3ca671979d6c9df4d7317141fdd1bbd0d22 Mon Sep 17 00:00:00 2001
From: Adrian Brennig <mail@adrian-brennig.de>
Date: Sat, 28 Mar 2020 10:47:27 +0100
Subject: [PATCH] define MATRIX_HEIGHT, MATRIX_WIDTH and
 MATRIX_ROWS_IN_PARALLEL only if not defined previously

---
 ESP32-RGB64x32MatrixPanel-I2S-DMA.h | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/ESP32-RGB64x32MatrixPanel-I2S-DMA.h b/ESP32-RGB64x32MatrixPanel-I2S-DMA.h
index 0b78993..09c3287 100644
--- a/ESP32-RGB64x32MatrixPanel-I2S-DMA.h
+++ b/ESP32-RGB64x32MatrixPanel-I2S-DMA.h
@@ -77,10 +77,17 @@
  * All of this is memory permitting of course (dependant on your sketch etc.) ...
  *
  */
-
+#ifndef MATRIX_HEIGHT
 #define MATRIX_HEIGHT               32 //64
+#endif
+
+#ifndef MATRIX_WIDTH
 #define MATRIX_WIDTH                64
+#endif
+
+#ifndef MATRIX_ROWS_IN_PARALLEL
 #define MATRIX_ROWS_IN_PARALLEL     2
+#endif
 
 /***************************************************************************************/
 /* ESP32 Pin Definition. You can change this, but best if you keep it as is...         */