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diff --git a/bertos/cpu/avr/drv/timer_avr.h b/bertos/cpu/avr/drv/timer_avr.h
deleted file mode 100644
index 2146620c..00000000
--- a/bertos/cpu/avr/drv/timer_avr.h
+++ /dev/null
@@ -1,173 +0,0 @@
-/**
- * \file
- * <!--
- * This file is part of BeRTOS.
- *
- * Bertos is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
- *
- * As a special exception, you may use this file as part of a free software
- * library without restriction.  Specifically, if other files instantiate
- * templates or use macros or inline functions from this file, or you compile
- * this file and link it with other files to produce an executable, this
- * file does not by itself cause the resulting executable to be covered by
- * the GNU General Public License.  This exception does not however
- * invalidate any other reasons why the executable file might be covered by
- * the GNU General Public License.
- *
- * Copyright 2003, 2004, 2005, 2010 Develer S.r.l. (http://www.develer.com/)
- * Copyright 2000 Bernie Innocenti <bernie@codewiz.org>
- *
- * -->
- *
- * \brief Low-level timer module for AVR (interface).
- *
- * \author Bernie Innocenti <bernie@codewiz.org>
- * \author Francesco Sacchi <batt@develer.com>
- * \author Luca Ottaviano <lottaviano@develer.com>
- *
- */
-
-#ifndef DRV_TIMER_AVR_H
-#define DRV_TIMER_AVR_H
-
-#include <hw/hw_cpufreq.h>   /* CPU_FREQ */
-
-#include "cfg/cfg_timer.h"   /* CONFIG_TIMER */
-#include <cfg/compiler.h>    /* uint8_t */
-#include <cfg/macros.h>      /* DIV_ROUND */
-
-#include <avr/io.h>
-#include <avr/interrupt.h>
-
-/**
- * \name Values for CONFIG_TIMER.
- *
- * Select which hardware timer interrupt to use for system clock and softtimers.
- * \note The timer 1 overflow mode set the timer as a 24 kHz PWM.
- * $WIZ$ timer_select = "TIMER_ON_OUTPUT_COMPARE0", "TIMER_ON_OVERFLOW1", "TIMER_ON_OUTPUT_COMPARE2", "TIMER_ON_OVERFLOW3", "TIMER_DEFAULT"
- */
-#define TIMER_ON_OUTPUT_COMPARE0  1
-#define TIMER_ON_OVERFLOW1        2
-#define TIMER_ON_OUTPUT_COMPARE2  3
-#define TIMER_ON_OVERFLOW3        4
-
-#define TIMER_DEFAULT TIMER_ON_OUTPUT_COMPARE0 ///< Default system timer
-
-/*
- * Hardware dependent timer initialization.
- */
-#if (CONFIG_TIMER == TIMER_ON_OUTPUT_COMPARE0)
-
-	#define TIMER_PRESCALER      64
-	#define TIMER_HW_BITS        8
-	#if CPU_AVR_ATMEGA1281 || CPU_AVR_ATMEGA1280 || CPU_AVR_ATMEGA168 || CPU_AVR_ATMEGA328P || CPU_AVR_ATMEGA2560
-		#define DEFINE_TIMER_ISR     DECLARE_ISR_CONTEXT_SWITCH(TIMER0_COMPA_vect)
-	#else
-		#define DEFINE_TIMER_ISR     DECLARE_ISR_CONTEXT_SWITCH(TIMER0_COMP_vect)
-	#endif
-	#define TIMER_TICKS_PER_SEC  1000
-	#define TIMER_HW_CNT         OCR_DIVISOR
-
-	/// Type of time expressed in ticks of the hardware high-precision timer
-	typedef uint8_t hptime_t;
-	#define SIZEOF_HPTIME_T 1
-
-	INLINE hptime_t timer_hw_hpread(void)
-	{
-		return TCNT0;
-	}
-
-#elif (CONFIG_TIMER == TIMER_ON_OVERFLOW1)
-
-	#define TIMER_PRESCALER      1
-	#define TIMER_HW_BITS        8
-	/** This value is the maximum in overflow based timers. */
-	#define TIMER_HW_CNT         (1 << TIMER_HW_BITS)
-	#define DEFINE_TIMER_ISR     DECLARE_ISR_CONTEXT_SWITCH(TIMER1_OVF_vect)
-	#define TIMER_TICKS_PER_SEC  DIV_ROUND(TIMER_HW_HPTICKS_PER_SEC, TIMER_HW_CNT)
-
-	/// Type of time expressed in ticks of the hardware high precision timer
-	typedef uint16_t hptime_t;
-	#define SIZEOF_HPTIME_T 2
-
-	INLINE hptime_t timer_hw_hpread(void)
-	{
-		return TCNT1;
-	}
-
-#elif (CONFIG_TIMER == TIMER_ON_OUTPUT_COMPARE2)
-
-	#define TIMER_PRESCALER      64
-	#define TIMER_HW_BITS        8
-	#if CPU_AVR_ATMEGA1281 || CPU_AVR_ATMEGA1280 || CPU_AVR_ATMEGA168 || CPU_AVR_ATMEGA328P || CPU_AVR_ATMEGA2560
-		#define DEFINE_TIMER_ISR     DECLARE_ISR_CONTEXT_SWITCH(TIMER2_COMPA_vect)
-	#else
-		#define DEFINE_TIMER_ISR     DECLARE_ISR_CONTEXT_SWITCH(TIMER2_COMP_vect)
-	#endif
-	#define TIMER_TICKS_PER_SEC  1000
-	/** Value for OCR register in output-compare based timers. */
-	#define TIMER_HW_CNT         OCR_DIVISOR
-
-	/// Type of time expressed in ticks of the hardware high precision timer
-	typedef uint8_t hptime_t;
-	#define SIZEOF_HPTIME_T 1
-
-	INLINE hptime_t timer_hw_hpread(void)
-	{
-		return TCNT2;
-	}
-
-#elif (CONFIG_TIMER == TIMER_ON_OVERFLOW3)
-
-	#define TIMER_PRESCALER      1
-	#define TIMER_HW_BITS        8
-	/** This value is the maximum in overflow based timers. */
-	#define TIMER_HW_CNT         (1 << TIMER_HW_BITS)
-	#define DEFINE_TIMER_ISR     DECLARE_ISR_CONTEXT_SWITCH(TIMER3_OVF_vect)
-	#define TIMER_TICKS_PER_SEC  DIV_ROUND(TIMER_HW_HPTICKS_PER_SEC, TIMER_HW_CNT)
-
-	/// Type of time expressed in ticks of the hardware high precision timer
-	typedef uint16_t hptime_t;
-	#define SIZEOF_HPTIME_T 2
-
-	INLINE hptime_t timer_hw_hpread(void)
-	{
-		return TCNT3;
-	}
-
-#else
-
-	#error Unimplemented value for CONFIG_TIMER
-#endif /* CONFIG_TIMER */
-
-
-/** Frequency of the hardware high precision timer. */
-#define TIMER_HW_HPTICKS_PER_SEC  DIV_ROUND(CPU_FREQ, TIMER_PRESCALER)
-
-/**
- * System timer: additional division after the prescaler
- * 12288000 / 64 / 192 (0..191) = 1 ms
- */
-#define OCR_DIVISOR  (DIV_ROUND(DIV_ROUND(CPU_FREQ, TIMER_PRESCALER), TIMER_TICKS_PER_SEC) - 1)
-
-/** Not needed, IRQ timer flag cleared automatically */
-#define timer_hw_irq() do {} while (0)
-
-/** Not needed, timer IRQ handler called only for timer source */
-#define timer_hw_triggered() (true)
-
-void timer_hw_init(void);
-
-#endif /* DRV_TIMER_AVR_H */