cpu/atmega2560: make use of hwtimer_compat

cpu/atmega2560/Makefile.include

@@ -1,9 +1,12 @@
-
 # this CPU implementation is using the new core/CPU interface
 export CFLAGS += -DCOREIF_NG=1
 
 # tell the build system that the CPU depends on the atmega common files
-export USEMODULE += atmega_common
+USEMODULE += atmega_common
+# use hwtimer compatibility module
+USEMODULE += hwtimer_compat
+# export the peripheral drivers to be linked into the final binary
+export USEMODULE += periph
 
 # define path to atmega common module, which is needed for this CPU
 export ATMEGA_COMMON = $(RIOTCPU)/atmega_common/
@@ -18,8 +21,6 @@ export INCLUDES += -I$(RIOTCPU)/$(CPU)/include
 #   Without this the interrupt vectors will not be linked correctly!
 export UNDEF += $(BINDIR)cpu/startup.o
 
-# export the peripheral drivers to be linked into the final binary
-export USEMODULE += periph
 
 # CPU depends on the atmega common module, so include it
 include $(ATMEGA_COMMON)Makefile.include

cpu/atmega2560/hwtimer_arch.c

@@ -1,73 +0,0 @@
-/*
- * Copyright (C) 2014 Freie Universität Berlin, Hinnerk van Bruinehsen
- *
- * This file is subject to the terms and conditions of the GNU Lesser
- * General Public License v2.1. See the file LICENSE in the top level
- * directory for more details.
- */
-
-/**
- * @ingroup     cpu_atmega2560
- * @{
- *
- * @file
- * @brief       Implementation of the kernels hwtimer interface
- *
- * The hardware timer implementation uses the ATmega2560 build-in system timer as back-end.
- *
- * @author      Hauke Petersen <hauke.petersen@fu-berlin.de>
- * @author      Hinnerk van Bruinehsen <h.v.bruinehsen@fu-berlin.de>
- *
- * @}
- */
-
-#include "arch/hwtimer_arch.h"
-#include "board.h"
-#include "periph/timer.h"
-#include "thread.h"
-
-
-void irq_handler(int channel);
-void (*timeout_handler)(int);
-
-
-void hwtimer_arch_init(void (*handler)(int), uint32_t fcpu)
-{
-    timeout_handler = handler;
-    timer_init(HW_TIMER, 1, &irq_handler);
-}
-
-void hwtimer_arch_enable_interrupt(void)
-{
-    timer_irq_enable(HW_TIMER);
-}
-
-void hwtimer_arch_disable_interrupt(void)
-{
-    timer_irq_disable(HW_TIMER);
-}
-
-void hwtimer_arch_set(unsigned long offset, short timer)
-{
-    timer_set(HW_TIMER, timer, offset);
-}
-
-void hwtimer_arch_set_absolute(unsigned long value, short timer)
-{
-    timer_set_absolute(HW_TIMER, timer, value);
-}
-
-void hwtimer_arch_unset(short timer)
-{
-    timer_clear(HW_TIMER, timer);
-}
-
-unsigned long hwtimer_arch_now(void)
-{
-    return timer_read(HW_TIMER);
-}
-
-void irq_handler(int channel)
-{
-    timeout_handler((short)(channel));
-}