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ROMWireProtocol.cpp

@@ -15,17 +15,21 @@ void setAddrPinsOut() {
 }
 
 void setDataPinsOut() {
+  if(dataMode == MODE_OUTPUT) { return; }
   for(int d = Data0; d <= Data7; d++) {
     pinMode(d, OUTPUT);
     digitalWrite(d, LOW);
   }
+  dataMode = MODE_OUTPUT;
 }
 
 void setDataPinsIn() {
+  if(dataMode == MODE_INPUT) { return; }
   for(int d = Data0; d <= Data7; d++) {
     digitalWrite(d, LOW);
     pinMode(d, INPUT);
   }
+  dataMode = MODE_INPUT;
 }
 
 void setByte(byte out) {
@@ -53,8 +57,8 @@ byte readByte() {
 
 byte readData(unsigned long address) {
   byte temp_read;
-  setByte(0);
-  setDataPinsIn();
+  //setByte(0);
+  //setDataPinsIn();
 
   digitalWrite(PGM, HIGH);
   digitalWrite(OE, HIGH);
@@ -77,10 +81,10 @@ void writeByte(byte data, unsigned long address) {
   digitalWrite(OE, HIGH);
   digitalWrite(PGM, HIGH);
 
-  delayMicroseconds(2);
+  delayMicroseconds(10);
 
   digitalWrite(PGM, LOW);
-  delayMicroseconds(1);
+  delayMicroseconds(3);
   digitalWrite(PGM, HIGH);
 }