not sure if this is useful or can be deleted.

Arduino driver 40x4/hd44780_40X4-LCDPROC.ino

@@ -0,0 +1,158 @@
+#include <LiquidCrystal.h>
+
+LiquidCrystal lcd(9, 8, 7, 6, 5, 4, 3, 2);
+
+int row = 0;
+int line = 0;
+bool controller = false;
+
+void setup() {
+  Serial.begin(115200);
+  // set up the LCD's number of columns and rows:
+  lcd.begin(40, 4);
+  lcd.clear();
+  lcd.home();
+}
+
+#define LCDSERIALIZER_LCDI 0xFE
+
+byte serial_getch() {
+  int incoming;
+  while (Serial.available() == 0) {
+  }
+  // read the incoming byte:
+  incoming = Serial.read();
+  //Serial.write(incoming);
+
+  return (incoming & 0xff);
+}
+
+void loop() {
+  byte rxbyte = serial_getch(); // Fetch byte
+
+  if (rxbyte == LCDSERIALIZER_LCDI) // If LCD instruction
+  {
+    //Serial.write("[CMD]");
+
+    rxbyte = serial_getch(); // Fetch byte
+
+    if (rxbyte == 0x01)
+    {
+      Serial.println("Clear screen");
+    }
+    else if (rxbyte == 0x0c)
+    {
+      Serial.println("Restore the display (with cursor hidden)");
+    }
+    else if (rxbyte == 0x08)
+    {
+      Serial.println("Blank the display (without clearing)");
+    }
+    else if (rxbyte == 0x0c)
+    {
+      Serial.println("Make cursor invisible");
+    }
+    else if (rxbyte == 0x0f)
+    {
+      Serial.println("Turn on visible blinking-block cursor");
+    }
+    else if (rxbyte == 0x0e)
+    {
+      Serial.println("Turn on visible underline cursor");
+    }
+    else if (rxbyte == 0x10)
+    {
+      Serial.println("Move cursor one character left");
+    }
+    else if (rxbyte == 0x14)
+    {
+      Serial.println("Move cursor one character right");
+    }
+    else if (rxbyte == 0x15)
+    {
+      Serial.println("(15)Move cursor one character right");
+    }
+    else if (rxbyte == 0x02)
+    {
+      Serial.println("Home (move cursor to top/left character position)");
+    }
+    else if (rxbyte == 0x18)
+    {
+      Serial.println("Scroll display one character left (all lines)");
+    }
+    else if (rxbyte == 0x1e)
+    {
+      Serial.println("Scroll display one character right (all lines)");
+    }
+    else if (rxbyte == 0x20)
+    {
+      Serial.println("Function set (4-bit interface, 1 line, 5*7 Pixels)");
+    }
+    else if (rxbyte == 0x28)
+    {
+      Serial.println("Function set (4-bit interface, 2 lines, 5*7 Pixels)");
+    }
+    else if (rxbyte == 0x30)
+    {
+      Serial.println("Function set (8-bit interface, 1 line, 5*7 Pixels)");
+    }
+    else if (rxbyte == 0x38)
+    {
+      Serial.println("Function set (8-bit interface, 2 lines, 5*7 Pixels)");
+    }
+    else if (rxbyte == 0x80)
+    {
+      serial_getch(); // instruction
+      row = serial_getch();
+      serial_getch(); // instruction
+      line = serial_getch();
+
+      lcd.setCursor(line, row);
+
+      Serial.println("Set Cursor to " + String(row) + "," + String(line));
+
+      return;
+    }
+    else if (rxbyte & 0x40)
+    {
+      //Serial.println("Set pointer in character-generator RAM (CG RAM address)");
+      Serial.println();
+
+      lcd.setController(0);
+      lcd.command(rxbyte);
+      lcd.setController(1);
+      lcd.command(rxbyte);
+
+      // get custom char
+      for (int i = 0; i < 8; i++)
+      {
+        rxbyte = serial_getch(); // Fetch byte
+        lcd.setController(0);
+        lcd.write(rxbyte);
+        lcd.setController(1);
+        lcd.write(rxbyte);
+      }
+
+      return;
+    }
+    else
+    {
+      // print byte.
+      String thisString = String(rxbyte, HEX);
+      Serial.println("UNKNOWN " + thisString);
+    }
+
+    //if (rxbyte != 0x80 && !(rxbyte & 0x40))
+    lcd.command(rxbyte);
+  }
+  else
+  {
+    // print byte.
+    //String thisString = String(rxbyte, HEX);
+    //Serial.println(thisString);
+    //Serial.println("position " + String(row) + " " + String(line));
+
+    lcd.write(rxbyte);
+    line++;
+  }
+}

Arduino driver 40x4/not sure if still useful/hd44780_40X4-LCDPROC.txt

@@ -0,0 +1,193 @@
+#include <LiquidCrystal.h>
+
+LiquidCrystal lcd(9, 8, 7, 6, 5, 4, 3, 2);
+
+int row = 0;
+int line = 0;
+bool controller = false;
+int temp = 0;
+int ignore = 0;
+
+void setup() {
+  Serial.begin(115200);
+  // set up the LCD's number of columns and rows:
+  lcd.begin(40, 4);
+  lcd.clear();
+  lcd.home();
+}
+
+#define LCDSERIALIZER_LCDI 0xFE
+
+byte serial_getch() {
+  int incoming;
+  while (Serial.available() == 0) {
+  }
+  // read the incoming byte:
+  incoming = Serial.read();
+  //Serial.write(incoming);
+
+  return (incoming & 0xff);
+}
+
+void loop() {
+  byte rxbyte = serial_getch(); // Fetch byte
+
+  if (rxbyte == LCDSERIALIZER_LCDI) // If LCD instruction
+  {
+    //Serial.write("[CMD]");
+
+    rxbyte = serial_getch(); // Fetch byte
+
+    if (rxbyte == 0x01)
+    {
+      Serial.println("Clear screen");
+    }
+    else if (rxbyte == 0x0c)
+    {
+      Serial.println("Restore the display (with cursor hidden)");
+    }
+    else if (rxbyte == 0x08)
+    {
+      Serial.println("Blank the display (without clearing)");
+    }
+    else if (rxbyte == 0x0c)
+    {
+      Serial.println("Make cursor invisible");
+    }
+    else if (rxbyte == 0x0f)
+    {
+      Serial.println("Turn on visible blinking-block cursor");
+    }
+    else if (rxbyte == 0x0e)
+    {
+      Serial.println("Turn on visible underline cursor");
+    }
+    else if (rxbyte == 0x10)
+    {
+      Serial.println("Move cursor one character left");
+    }
+    else if (rxbyte == 0x14)
+    {
+      Serial.println("Move cursor one character right");
+    }
+    else if (rxbyte == 0x15)
+    {
+      Serial.println("(15)Move cursor one character right");
+    }
+    else if (rxbyte == 0x02)
+    {
+      Serial.println("Home (move cursor to top/left character position)");
+    }
+    else if (rxbyte == 0x18)
+    {
+      Serial.println("Scroll display one character left (all lines)");
+    }
+    else if (rxbyte == 0x1e)
+    {
+      Serial.println("Scroll display one character right (all lines)");
+    }
+    else if (rxbyte == 0x20)
+    {
+      Serial.println("Function set (4-bit interface, 1 line, 5*7 Pixels)");
+    }
+    else if (rxbyte == 0x28)
+    {
+      Serial.println("Function set (4-bit interface, 2 lines, 5*7 Pixels)");
+    }
+    else if (rxbyte == 0x30)
+    {
+      Serial.println("Function set (8-bit interface, 1 line, 5*7 Pixels)");
+    }
+    else if (rxbyte == 0x38)
+    {
+      Serial.println("Function set (8-bit interface, 2 lines, 5*7 Pixels)");
+    }
+    else if (rxbyte & 0x80)
+    {
+      byte address = rxbyte & 0x7f;
+
+      row = address <= 0x27 ? 0 : 1;
+      line = address <= 0x27 ? address : address - 64;
+
+      Serial.print("Address received " + String(row) + "," + String(line) + " \t");
+
+      if (controller)
+        row = row + 2;
+
+      if (row == 1 && line == 0)
+        controller = true;
+      else if (row == 3)
+        controller = false;
+
+      lcd.setCursor(line, row);
+
+      Serial.println("Set Cursor to " + String(row) + "," + String(line));
+
+      return;
+    }
+    else if (rxbyte & 0x40)
+    {
+      //Serial.println("Set pointer in character-generator RAM (CG RAM address)");
+      Serial.println();
+
+      // uhh?
+      //ignore = 8;
+
+      lcd.setController(0);
+      lcd.command(rxbyte);
+      lcd.setController(1);
+      lcd.command(rxbyte);
+
+      // get custom char
+      for (int i = 0; i < 8; i++)
+      {
+        rxbyte = serial_getch(); // Fetch byte
+        lcd.setController(0);
+        lcd.write(rxbyte);
+        lcd.setController(1);
+        lcd.write(rxbyte);
+      }
+
+      return;
+    }
+    else
+    {
+      // print byte.
+      String thisString = String(rxbyte, HEX);
+      Serial.println("UNKNOWN " + thisString);
+    }
+
+    //if (rxbyte != 0x80 && !(rxbyte & 0x40))
+    lcd.command(rxbyte);
+  }
+  else
+  {
+    // print byte.
+    //String thisString = String(rxbyte, HEX);
+    //Serial.println(thisString);
+    //Serial.println("position " + String(row) + " " + String(line));
+
+
+    //if (ignore == 0)
+    //{
+    lcd.write(rxbyte);
+    line++;
+    //}
+    /*else
+    {
+      lcd.setController(0);
+      lcd.write(rxbyte);
+      lcd.setController(1);
+      lcd.write(rxbyte);
+      ignore--;
+    }*/
+
+    /*if (line > 39)
+    {
+      row = row < 3 ? row + 1 : 0;
+      line = 0;
+      Serial.println("row increased by line count");
+    }
+    lcd.setCursor(line, row);*/
+  }
+}

Arduino driver 40x4/not sure if still useful/temp.txt

@@ -0,0 +1,172 @@
+/*#include <LiquidCrystal.h>
+
+LiquidCrystal lcd(9, 8, 7, 6, 5, 4, 3, 2);
+
+int row = 0;
+int line = 0;
+
+void setup() {
+  Serial.begin(115200);
+  // set up the LCD's number of columns and rows:
+  lcd.begin(40, 4);
+  lcd.clear();
+  lcd.home();
+}
+
+#define LCDSERIALIZER_LCDI 0xFE
+
+byte serial_getch() {
+  int incoming;
+  while (Serial.available() == 0) {
+  }
+  // read the incoming byte:
+  incoming = Serial.read();
+  //Serial.write(incoming);
+
+  return (incoming & 0xff);
+}
+
+void loop() {
+  byte rxbyte;
+
+  rxbyte = serial_getch(); // Fetch byte
+
+  if (rxbyte == 0x11) // If LCD instruction
+  {
+    Serial.write("[CMD]");
+
+    rxbyte = serial_getch(); // Fetch byte
+
+    if (rxbyte == 0x0C)
+    {
+      lcd.clear();
+      lcd.home();
+      Serial.println("[ff]");
+      line = 0;
+      row = 0;
+      lcd.setCursor(line, row);
+    }
+    else if (rxbyte == 0x01)
+    {
+      Serial.println("[clr]");
+      lcd.clear();
+    }
+    else if (rxbyte == 0x0D)
+    {
+      Serial.println("[cr]");
+      lcd.setCursor(0, row);
+    }
+    else if (rxbyte == 0x0A)
+    {
+      Serial.println("[nl]");
+      row = row < 3 ? row + 1 : 0;
+      line = 0;
+      lcd.setCursor(line, row);
+    }
+    else if (rxbyte == 0xc0) {
+      lcd.clear();
+      lcd.home();
+      Serial.println("[ff]");
+      row = 0;
+      line = 0;
+      lcd.setCursor(line, row);
+    }
+    else if (rxbyte == 0x12)  {
+      Serial.println("[\n]");
+      row = row < 3 ? row + 1 : 0;
+      line = 0;
+      lcd.setCursor(line, row);
+    }
+    else if (rxbyte == 0x04)  {
+      Serial.println("[ ]");
+      line++;
+      if (line > 39)
+      {
+        row = row < 3 ? row + 1 : 0;
+        line = 0;
+      }
+      lcd.setCursor(line, row);
+    }
+    else if (rxbyte == 0x02)  {
+      Serial.write("[hm]");
+      lcd.clear();
+      lcd.home();
+      Serial.println("[ff]");
+      line = 0;
+      row = 0;
+      lcd.setCursor(line, row);
+    }
+    else if (rxbyte == 0x80)  {
+      lcd.clear();
+      lcd.home();
+      Serial.println("[80 clr]");
+      line = 0;
+      row = 0;
+      lcd.setCursor(line, row);
+    }
+    else
+    {
+      Serial.print("[?]");
+      String thisString = String(rxbyte, HEX);
+      Serial.println(thisString);
+    }
+  }
+  /*else if (rxbyte == 0x12) {
+    Serial.println("[]");
+  }
+  else if (rxbyte == 0x15) {
+    Serial.println("[]");
+  }*/
+  /*else if (rxbyte == 0x20) {
+    Serial.println("[]");
+  }*/
+
+
+  /*else if (rxbyte == 0x15) {
+    Serial.println("[]");
+  }
+  else if (rxbyte == 0x00) {
+    Serial.println("[]");
+  }
+  else if (rxbyte == 0x1b) {
+    Serial.println("[]");
+  }
+  else if (rxbyte == 0x1f) {
+    Serial.println("[]");
+  }
+  else if (rxbyte == 0x0e) {
+    Serial.println("[<]");
+    line--;
+    if (line < 0)
+    {
+      row = row > 0 ? row - 1 : 3;
+      line = 0;
+    }
+  }
+  else if (rxbyte == 0x01) {
+    Serial.print("[pos]");
+    serial_getch();
+    serial_getch();
+    serial_getch();
+    serial_getch();
+  }
+
+  else if (rxbyte == 0x0a) {
+    row = row < 3 ? row + 1 : 0;
+    lcd.setCursor(line, row);
+  }
+
+  else {
+    String thisString = String(rxbyte, HEX);
+    Serial.println(thisString);
+    lcd.write(rxbyte); //Otherwise just dump it as text
+    line++;
+    if (line > 39)
+    {
+      row = row < 3 ? row + 1 : 0;
+      line = 0;
+    }
+    lcd.setCursor(line, row);
+  }
+}
+*/

server/drivers/hd44780.c

@@ -622,8 +622,17 @@ HD44780_position(Driver *drvthis, int x, int y)
 		if ((relY % 4) >= 2)
 			DDaddr += p->width;
 	}
-	p->hd44780_functions->senddata(p, dispID, RS_INSTR, POSITION | DDaddr);
+	//p->hd44780_functions->senddata(p, dispID, RS_INSTR, POSITION | DDaddr);
+	
+	p->hd44780_functions->senddata(p, dispID, RS_INSTR, 0x80);
 	p->hd44780_functions->uPause(p, 40);  /* Minimum exec time for all commands */
+	
+	p->hd44780_functions->senddata(p, dispID, RS_INSTR, relY);
+	p->hd44780_functions->uPause(p, 40);  /* Minimum exec time for all commands */
+	
+	p->hd44780_functions->senddata(p, dispID, RS_INSTR, x);
+	p->hd44780_functions->uPause(p, 40);  /* Minimum exec time for all commands */
+	
 	if (p->hd44780_functions->flush != NULL)
 		p->hd44780_functions->flush(p);
 }