use digitalWrite instead of SPI

diff --git a/Hub08_LedMatrix/LEDMatrix.cpp b/Hub08_LedMatrix/LEDMatrix.cpp
index 74e4fa5..a6719bf 100644 (file)
--- a/Hub08_LedMatrix/LEDMatrix.cpp
+++ b/Hub08_LedMatrix/LEDMatrix.cpp
@@ -21,7 +21,7 @@
 #include "LEDMatrix.h"
 #include "Arduino.h"
 
-#define USE_SPI 1
+#define USE_SPI 0
 
 #if USE_SPI
 #include <SPI.h>
@@ -157,14 +157,14 @@ void LEDMatrix::scan()
         }
     }
 
-    digitalWrite(oe, HIGH);              // disable display
-
     // select row
     digitalWrite(a, (row & 0x01));
     digitalWrite(b, (row & 0x02));
     digitalWrite(c, (row & 0x04));
     digitalWrite(d, (row & 0x08));
 
+    digitalWrite(oe, HIGH);              // disable display
+
     // latch data
     digitalWrite(stb, LOW);
     digitalWrite(stb, HIGH);