EEPROM base class

git-svn-id: https://arducopter.googlecode.com/svn/trunk@1238 f9c3cf11-9bcb-44bc-f272-b75c42450872

libraries/AP_EEPROM/AP_EEPROM.cpp

@@ -0,0 +1,67 @@
+/*
+	RC_Channel.cpp - Radio library for Arduino
+	Code by Jason Short. DIYDrones.com
+	
+	This library is free software; you can redistribute it and / or
+		modify it under the terms of the GNU Lesser General Public
+		License as published by the Free Software Foundation; either
+		version 2.1 of the License, or (at your option) any later version.
+
+*/
+
+#include <avr/eeprom.h>
+#include "AP_EEPROM.h"
+
+//#include "WProgram.h"
+
+void
+AP_EEPROM::write_byte(int address, int8_t value)
+{
+	eeprom_write_byte((uint8_t *) address, value);
+}
+
+void
+AP_EEPROM::write_int(int address, int value)
+{
+	eeprom_write_word((uint16_t *) address, value);
+}
+
+void
+AP_EEPROM::write_long(int address, long value)
+{
+	eeprom_write_dword((uint32_t *) address, value);
+}
+
+void
+AP_EEPROM::write_float(int address, float value)
+{
+	_type_union.fvalue = value;
+	write_long(address, _type_union.lvalue);
+}
+
+int
+AP_EEPROM::read_byte(int address)
+{
+	return eeprom_read_byte((const uint8_t *) address);
+}
+
+int
+AP_EEPROM::read_int(int address)
+{
+	return eeprom_read_word((const uint16_t *) address);
+}
+
+long
+AP_EEPROM::read_long(int address)
+{
+	return eeprom_read_dword((const uint32_t *) address);
+}
+
+float
+AP_EEPROM::read_float(int address)
+{
+	_type_union.lvalue = eeprom_read_dword((const uint32_t *) address);
+	return _type_union.fvalue;
+}
+
+

libraries/AP_EEPROM/AP_EEPROM.h

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+// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: t -*-
+
+/// @file	AP_EEPROM.h
+/// @brief	AP_EEPROM manager
+
+#ifndef AP_EEPROM_h
+#define AP_EEPROM_h
+
+//#include <stdint.h>
+#include "WProgram.h"
+
+/// @class	AP_EEPROM
+/// @brief	Object for reading and writing to the EEPROM
+class AP_EEPROM{
+  public:	
+	/// Constructor
+	AP_EEPROM(){}
+
+	int		read_byte(int address);
+	int		read_int(int address);
+	long	read_long(int address);
+	float	read_float(int address);
+	
+	void	write_byte(int address, int8_t value);
+	void	write_int(int address, int16_t value);
+	void	write_long(int address, int32_t value);
+	void	write_float(int address, float value);
+	
+  private:
+  
+	union type_union {
+		int8_t	bytes[4];
+		long 	lvalue;
+		int 	ivalue;
+		float 	fvalue;
+	} _type_union;
+  
+};
+
+#endif	
+

libraries/AP_EEPROM/examples/AP_EEPROM/AP_EEPROM.pde

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+#include <AP_EEPROM.h> 		// ArduPilot Mega RC Library
+
+byte 	byte_value = 99;
+int 	int_value = 30000;
+long 	long_value = 123456789;
+float 	float_value = .01234;
+
+AP_EEPROM ee;
+void setup()
+{
+	Serial.begin(38400);
+	delay(100);
+	Serial.println("\nAP_EEPROM test");
+
+	Serial.println("AP_EEPROM test");
+	ee.write_byte(0, byte_value);
+	ee.write_int(1, int_value);
+	ee.write_long(3, long_value);
+	ee.write_float(7, float_value);
+
+
+	Serial.println(ee.read_byte(0), DEC);
+	Serial.println(ee.read_int(1), DEC);
+	Serial.println(ee.read_long(3), DEC);
+	float e = ee.read_float(7);
+	long y = e * 100;
+	//Serial.println(e, 5);930 bytes
+	
+}
+
+void loop()
+{
+
+
+}
+
+
+// 2162 bytes
+// 2216