From e60df4a6dbe57c17923c6fae246e80a1f8ab0d1a Mon Sep 17 00:00:00 2001
From: mandlm <mandlm@molez.net>
Date: Wed, 13 Jan 2016 10:59:42 +0100
Subject: [PATCH] Implemented KS0066 initialization

---
 LCD/LCD/KS0066.cpp      | 179 ++++++++++++++++++++++++++++++++++++++++
 LCD/LCD/KS0066.h        |  37 +++++++++
 LCD/LCD/LCD.cpp         |   3 +-
 LCD/LCD/LCD.cppproj     |   6 ++
 LCD/LCD/ShiftRegister.h |  19 -----
 5 files changed, 224 insertions(+), 20 deletions(-)
 create mode 100644 LCD/LCD/KS0066.cpp
 create mode 100644 LCD/LCD/KS0066.h

diff --git a/LCD/LCD/KS0066.cpp b/LCD/LCD/KS0066.cpp
new file mode 100644
index 0000000..5f13dd0
--- /dev/null
+++ b/LCD/LCD/KS0066.cpp
@@ -0,0 +1,179 @@
+#include "KS0066.h"
+
+#include <util/delay.h>
+
+KS0066::KS0066(ShiftRegister &shiftRegister) : m_shiftRegister(shiftRegister)
+{
+	initDisplay();
+}
+
+void KS0066::initDisplay()
+{
+	_delay_ms(30);
+
+	functionSet(false, false, true);
+	onOffControl(true, true, true);
+	displayClear();
+	entryMode(true, false);
+
+	sendChar('i');
+	sendChar('n');
+	sendChar('i');
+	sendChar('t');
+}
+
+void KS0066::functionSet(bool interface8bit, bool twoLine, bool displayOn)
+{
+	uint8_t command = 0b00100000;
+
+	if (interface8bit)
+	{
+		command |= (1 << 4);
+	}
+
+	if (twoLine)
+	{
+		command |= (1 << 3);
+	}
+
+	if (displayOn)
+	{
+		command |= (1 << 2);
+	}
+
+	sendCommand(command);
+
+	_delay_us(39);
+}
+
+void KS0066::onOffControl(bool displayOn, bool cursorOn, bool blinkingOn)
+{
+	uint8_t command = 0b00001000;
+
+	if (displayOn)
+	{
+		command |= (1 << 2);
+	}
+
+	if (cursorOn)
+	{
+		command |= (1 << 1);
+	}
+
+	if (blinkingOn)
+	{
+		command |= (1 << 0);
+	}
+
+	sendCommand(command);
+
+	_delay_us(39);
+}
+
+void KS0066::displayClear()
+{
+	uint8_t command = 0b00000001;
+
+	sendCommand(command);
+
+	_delay_ms(1.53);
+}
+
+void KS0066::entryMode(bool incrementMode, bool entireShift)
+{
+	uint8_t command = 0b00000100;
+
+	if (incrementMode)
+	{
+		command |= (1 << 1);
+	}
+
+	if (entireShift)
+	{
+		command |= (1 << 0);
+	}
+
+	sendCommand(command);
+
+	_delay_us(39);
+}
+
+void KS0066::sendCommand(uint8_t data)
+{
+	sendByte(data, true);
+}
+
+void KS0066::sendChar(char c)
+{
+	sendByte(c, false);
+
+	_delay_us(43);
+}
+
+void KS0066::sendByte(uint8_t data, bool isCommand)
+{
+	uint8_t registerValue = 0;
+
+	if (!isCommand)
+	{
+		registerValue |= (1 << m_rs);
+	}
+
+	if (data & (1 << 7))
+	{
+		registerValue |= (1 << m_db7);
+	}
+
+	if (data & (1 << 6))
+	{
+		registerValue |= (1 << m_db6);
+	}
+
+	if (data & (1 << 5))
+	{
+		registerValue |= (1 << m_db5);
+	}
+
+	if (data & (1 << 4))
+	{
+		registerValue |= (1 << m_db4);
+	}
+
+	execute(registerValue);
+
+	registerValue &= (1 << m_rs);
+
+	if (data & (1 << 3))
+	{
+		registerValue |= (1 << m_db7);
+	}
+
+	if (data & (1 << 3))
+	{
+		registerValue |= (1 << m_db6);
+	}
+
+	if (data & (1 << 1))
+	{
+		registerValue |= (1 << m_db5);
+	}
+
+	if (data & (1 << 0))
+	{
+		registerValue |= (1 << m_db4);
+	}
+
+	execute(registerValue);
+}
+
+void KS0066::execute(uint8_t registerValue)
+{
+	registerValue |= (1 << m_e);
+	m_shiftRegister.output(registerValue);
+
+	_delay_us(2);
+
+	registerValue &= ~(1 << m_e);
+	m_shiftRegister.output(registerValue);
+}
+
diff --git a/LCD/LCD/KS0066.h b/LCD/LCD/KS0066.h
new file mode 100644
index 0000000..866e3b1
--- /dev/null
+++ b/LCD/LCD/KS0066.h
@@ -0,0 +1,37 @@
+#pragma once
+
+#include <avr/io.h>
+
+#include "ShiftRegister.h"
+
+class KS0066
+{
+private:
+	ShiftRegister &m_shiftRegister;
+
+	static const uint8_t m_rs = 0;
+	static const uint8_t m_rw = 1;
+	static const uint8_t m_e = 2;
+	static const uint8_t m_db4 = 3;
+	static const uint8_t m_db5 = 4;
+	static const uint8_t m_db6 = 5;
+	static const uint8_t m_db7 = 6;
+
+public:
+	KS0066(ShiftRegister &shiftRegister);
+
+private:
+	void initDisplay();
+
+	void functionSet(bool interface8bit, bool twoLine, bool displayOn);
+	void onOffControl(bool displayOn, bool cursorOn, bool blinkingOn);
+	void displayClear();
+	void entryMode(bool incrementMode, bool entireShift);
+
+	void sendCommand(uint8_t data);
+	void sendChar(char c);
+
+	void sendByte(uint8_t data, bool isCommand);
+
+	void execute(uint8_t registerValue);
+};
\ No newline at end of file
diff --git a/LCD/LCD/LCD.cpp b/LCD/LCD/LCD.cpp
index e7615ea..601a0c1 100644
--- a/LCD/LCD/LCD.cpp
+++ b/LCD/LCD/LCD.cpp
@@ -6,6 +6,7 @@
 
 #include "Pin.h"
 #include "ShiftRegister.h"
+#include "KS0066.h"
 
 int main(void)
 {
@@ -15,7 +16,7 @@ int main(void)
 	Pin ledPin(&PORTA, PA0);
 
 	// lcd initialization goes here
-	LCD lcd(shiftRegister);
+	KS0066 lcd(shiftRegister);
 
 	while(1)
 	{
diff --git a/LCD/LCD/LCD.cppproj b/LCD/LCD/LCD.cppproj
index c19627f..2eaaa52 100644
--- a/LCD/LCD/LCD.cppproj
+++ b/LCD/LCD/LCD.cppproj
@@ -133,6 +133,12 @@
     </ToolchainSettings>
   </PropertyGroup>
   <ItemGroup>
+    <Compile Include="KS0066.cpp">
+      <SubType>compile</SubType>
+    </Compile>
+    <Compile Include="KS0066.h">
+      <SubType>compile</SubType>
+    </Compile>
     <Compile Include="LCD.cpp">
       <SubType>compile</SubType>
     </Compile>
diff --git a/LCD/LCD/ShiftRegister.h b/LCD/LCD/ShiftRegister.h
index 1887dce..a2b2e4d 100644
--- a/LCD/LCD/ShiftRegister.h
+++ b/LCD/LCD/ShiftRegister.h
@@ -17,22 +17,3 @@ public:
 
 	void output(int8_t value);
 };
-
-class LCD
-{
-private:
-	ShiftRegister &m_shiftRegister;
-
-public:
-	LCD(ShiftRegister &shiftRegister)
-		: m_shiftRegister(shiftRegister)
-	{
-
-	}
-
-private:
-	void init()
-	{
-
-	}
-};
\ No newline at end of file