cpu/atmega*: factorise common code into atmega_common

boards/common/arduino-atmega/include/board_common.h

@@ -59,6 +59,20 @@ extern "C" {
 #define LED0_TOGGLE         (PORTB ^=  LED0_MASK)
 /** @} */
 
+/**
+ * @name    Usage of LED to turn on when a kernel panic occurs.
+ * @{
+ */
+#define LED_PANIC           LED0_ON
+/** @} */
+
+/**
+ * @name CPU clock scale for arduino boards
+ *
+ */
+#define CPU_ATMEGA_CLK_SCALE_INIT    CPU_ATMEGA_CLK_SCALE_DIV1
+/** @} */
+
 /**
  * @name    xtimer configuration values
  * @{

boards/jiminy-mega256rfr2/include/board.h

@@ -73,6 +73,13 @@ extern "C" {
 #define LED2_TOGGLE         (LED_PORT ^=  LED2_MASK)
 /** @} */
 
+/**
+ * @name   White LED light is used to signal ERROR.
+ * @{
+ */
+#define LED_PANIC           (LED_PORT |= LED2_MASK | LED1_MASK | LED0_MASK)
+/** @} */
+
 /**
  * @name xtimer configuration values
  * @{
@@ -83,6 +90,40 @@ extern "C" {
 #define XTIMER_HZ           (125000UL)
 /** @} */
 
+/**
+ * @name Indicate Watchdog cleared in bootloader an
+ *
+ * AVR CPUs need to reset the Watchdog as fast as possible.
+ * This flag indicates that the watchdog is reseted in the bootloader
+ * and that the MCUSR value is stored in register 2 (r2)
+ * @{
+ */
+#define BOOTLOADER_CLEARS_WATCHDOG_AND_PASSES_MCUSR 1
+/** @} */
+
+/**
+ * @name Indicate Watchdog cleared in bootloader an
+ *
+ * AVR CPUs need to reset the Watchdog as fast as possible.
+ * This flag indicates that the watchdog is reseted in the bootloader
+ * and that the MCUSR value is stored in register 2 (r2)
+ * @{
+ */
+#define BOOTLOADER_CLEARS_WATCHDOG_AND_PASSES_MCUSR 1
+/** @} */
+
+/**
+ * @name CPU clock scale for jiminy-megarfr256rfr2
+ *
+ * The CPU can not be used with the external xtal oscillator if the core
+ * should be put in sleep while the transceiver is in rx mode.
+ *
+ * It seems the as teh peripheral clock divider is set to 1 and this all
+ * clocks of the timer, etc run with 16MHz increasing power consumption.
+ */
+#define CPU_ATMEGA_CLK_SCALE_INIT    CPU_ATMEGA_CLK_SCALE_DIV1
+/** @} */
+
 /**
  * @brief Initialize board specific hardware, including clock, LEDs and std-IO
  */

boards/mega-xplained/include/board.h

@@ -90,6 +90,13 @@ extern "C" {
 #define LED3_TOGGLE         PORTB ^=  LED3_PIN
 /** @} */
 
+/**
+ * @name    Usage of LED to turn on when a kernel panic occurs.
+ * @{
+ */
+#define LED_PANIC           LED1_ON
+/** @} */
+
 /**
  * @name    Button pin configuration
  * @{
@@ -111,6 +118,13 @@ extern "C" {
 #define FILTER_OUTPUT          GPIO_PIN(PORT_A, 7)
 /** @} */
 
+/**
+ * @name CPU clock scale for mega-xplained
+ *
+ */
+#define CPU_ATMEGA_CLK_SCALE_INIT    CPU_ATMEGA_CLK_SCALE_DIV1
+/** @} */
+
 /**
  * @brief   Initialize board specific hardware, including clock, LEDs and std-IO
  */

boards/waspmote-pro/include/board.h

@@ -78,6 +78,13 @@ extern "C" {
 #define LED_RED_TOGGLE       LED0_TOGGLE
 /** @} */
 
+/**
+ * @name    Usage of LED to turn on when a kernel panic occurs.
+ * @{
+ */
+#define LED_PANIC            LED_RED_ON
+/** @} */
+
 /**
  * @name    Macros for controlling the on-board MUXes.
  * @{
@@ -143,6 +150,13 @@ extern "C" {
                                      MUX_USB_XBEE_ON
 /** @} */
 
+/**
+ * @name CPU clock scale for waspmote-pro
+ *
+ */
+#define CPU_ATMEGA_CLK_SCALE_INIT    CPU_ATMEGA_CLK_SCALE_DIV1
+/** @} */
+
 /**
  * @name    xtimer configuration values
  * @{

cpu/atmega1281/Makefile

@@ -1,5 +1,7 @@
 # define the module that is build
 MODULE = cpu
+
 # add a list of subdirectories, that should also be build
-DIRS = $(ATMEGA_COMMON)
+DIRS = $(RIOTCPU)/atmega_common/
+
 include $(RIOTBASE)/Makefile.base

cpu/atmega1281/Makefile.include

@@ -1,15 +1,8 @@
 # tell the build system that the CPU depends on the atmega common files
 USEMODULE += atmega_common
 
-# define path to atmega common module, which is needed for this CPU
-export ATMEGA_COMMON = $(RIOTCPU)/atmega_common/
-
-# explicitly tell the linker to link the syscalls and startup code.
-#   Without this the interrupt vectors will not be linked correctly!
-export UNDEF += $(BINDIR)/cpu/startup.o
-
 RAM_LEN = 8K
 ROM_LEN = 128K
 
 # CPU depends on the atmega common module, so include it
-include $(ATMEGA_COMMON)Makefile.include
+include $(RIOTCPU)/atmega_common/Makefile.include

cpu/atmega1284p/Makefile

@@ -1,6 +1,7 @@
 # define the module that is build
 MODULE = cpu
+
 # add a list of subdirectories, that should also be build
-DIRS = $(ATMEGA_COMMON)
+DIRS = $(RIOTCPU)/atmega_common/
 
 include $(RIOTBASE)/Makefile.base

cpu/atmega1284p/Makefile.include

@@ -1,11 +1,8 @@
 # tell the build system that the CPU depends on the atmega common files
 USEMODULE += atmega_common
 
-# define path to atmega common module, which is needed for this CPU
-export ATMEGA_COMMON = $(RIOTCPU)/atmega_common/
-
 RAM_LEN = 16K
 ROM_LEN = 128K
 
 # CPU depends on the atmega common module, so include it
-include $(ATMEGA_COMMON)Makefile.include
+include $(RIOTCPU)/atmega_common/Makefile.include