upgraded to new spreadspace avr tools

git-svn-id: https://svn.spreadspace.org/mur.sat@489 7de4ea59-55d0-425e-a1af-a3118ea81d4c

6 files changed, 605 insertions, 0 deletions

diff --git a/software/avr.lib/led.c b/software/avr.lib/led.c
new file mode 100644
index 0000000..ea5bcc3
--- /dev/null
+++ b/software/avr.lib/led.c
@@ -0,0 +1,92 @@
+/*
+ *  spreadspace avr utils
+ *
+ *
+ *  Copyright (C) 2012 Christian Pointner <equinox@spreadspace.org>
+ *
+ *  This file is part of spreadspace avr utils.
+ *
+ *  spreadspace avr utils 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 3 of the License, or
+ *  any later version.
+ *
+ *  spreadspace avr utils 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 spreadspace avr utils. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <avr/io.h>
+
+#include "led.h"
+
+#if defined(__BOARD_arduinoUno__) || defined(__BOARD_AvrNetIo__)
+#define HAS_LED 0
+#else
+#define HAS_LED 1
+#endif
+
+#if defined(__BOARD_teensy1__) || defined(__BOARD_teensy1pp__)
+#define LED_DIR 0
+#else
+#define LED_DIR 1
+#endif
+
+#if defined(__BOARD_teensy1__) || defined(__BOARD_teensy1pp__) || defined(__BOARD_teensy2__) || defined(__BOARD_teensy2pp__)
+#define LED_PORT PORTD
+#define LED_DDR DDRD
+#define LED_PINNUM 6
+#endif
+
+#if defined(__BOARD_hhd70dongle__)
+#define LED_PORT PORTE
+#define LED_DDR DDRE
+#define LED_PINNUM 6
+#endif
+
+#if defined(__BOARD_arduino2009v2__) || defined(__BOARD_arduino2009__) || defined(__BOARD_arduino10000__) || defined(__BOARD_arduinoNG__)
+#define LED_PORT PORTB
+#define LED_DDR DDRB
+#define LED_PINNUM 5
+#endif
+
+void led_init(void)
+{
+#if HAS_LED == 1
+  led_off();
+  LED_DDR = 1<<LED_PINNUM;
+#endif
+}
+
+void led_on(void)
+{
+#if HAS_LED == 1
+#if LED_DIR == 1
+  LED_PORT |= 1<<LED_PINNUM;
+#else
+  LED_PORT &= ~(1<<LED_PINNUM);
+#endif
+#endif
+}
+
+void led_off(void)
+{
+#if HAS_LED == 1
+#if LED_DIR == 1
+  LED_PORT &= ~(1<<LED_PINNUM);
+#else
+  LED_PORT |= 1<<LED_PINNUM;
+#endif
+#endif
+}
+
+void led_toggle(void)
+{
+#if HAS_LED == 1
+  LED_PORT ^= 1<<LED_PINNUM;
+#endif
+}
diff --git a/software/avr.lib/led.h b/software/avr.lib/led.h
new file mode 100644
index 0000000..12f00a8
--- /dev/null
+++ b/software/avr.lib/led.h
@@ -0,0 +1,31 @@
+/*
+ *  spreadspace avr utils
+ *
+ *
+ *  Copyright (C) 2012 Christian Pointner <equinox@spreadspace.org>
+ *
+ *  This file is part of spreadspace avr utils.
+ *
+ *  spreadspace avr utils 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 3 of the License, or
+ *  any later version.
+ *
+ *  spreadspace avr utils 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 spreadspace avr utils. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef SPREADSPACE_led_h_INCLUDED
+#define SPREADSPACE_led_h_INCLUDED
+
+void led_init(void);
+void led_on(void);
+void led_off(void);
+void led_toggle(void);
+
+#endif
diff --git a/software/avr.lib/lufa-descriptor-usbserial.c b/software/avr.lib/lufa-descriptor-usbserial.c
new file mode 100644
index 0000000..6e9f022
--- /dev/null
+++ b/software/avr.lib/lufa-descriptor-usbserial.c
@@ -0,0 +1,271 @@
+/*

+             LUFA Library

+     Copyright (C) Dean Camera, 2012.

+

+  dean [at] fourwalledcubicle [dot] com

+           www.lufa-lib.org

+*/

+

+/*

+  Copyright 2012  Dean Camera (dean [at] fourwalledcubicle [dot] com)

+

+  Permission to use, copy, modify, distribute, and sell this

+  software and its documentation for any purpose is hereby granted

+  without fee, provided that the above copyright notice appear in

+  all copies and that both that the copyright notice and this

+  permission notice and warranty disclaimer appear in supporting

+  documentation, and that the name of the author not be used in

+  advertising or publicity pertaining to distribution of the

+  software without specific, written prior permission.

+

+  The author disclaim all warranties with regard to this

+  software, including all implied warranties of merchantability

+  and fitness.  In no event shall the author be liable for any

+  special, indirect or consequential damages or any damages

+  whatsoever resulting from loss of use, data or profits, whether

+  in an action of contract, negligence or other tortious action,

+  arising out of or in connection with the use or performance of

+  this software.

+*/

+

+/** \file

+ *

+ *  USB Device Descriptors, for library use when in USB device mode. Descriptors are special

+ *  computer-readable structures which the host requests upon device enumeration, to determine

+ *  the device's capabilities and functions.

+ */

+

+#include "lufa-descriptor-usbserial.h"

+

+/* On some devices, there is a factory set internal serial number which can be automatically sent to the host as

+ * the device's serial number when the Device Descriptor's .SerialNumStrIndex entry is set to USE_INTERNAL_SERIAL.

+ * This allows the host to track a device across insertions on different ports, allowing them to retain allocated

+ * resources like COM port numbers and drivers. On demos using this feature, give a warning on unsupported devices

+ * so that the user can supply their own serial number descriptor instead or remove the USE_INTERNAL_SERIAL value

+ * from the Device Descriptor (forcing the host to generate a serial number for each device from the VID, PID and

+ * port location).

+ */

+#if (USE_INTERNAL_SERIAL == NO_DESCRIPTOR)

+  #warning USE_INTERNAL_SERIAL is not available on this AVR - please manually construct a device serial descriptor.

+#endif

+

+/** Device descriptor structure. This descriptor, located in FLASH memory, describes the overall

+ *  device characteristics, including the supported USB version, control endpoint size and the

+ *  number of device configurations. The descriptor is read out by the USB host when the enumeration

+ *  process begins.

+ */

+const USB_Descriptor_Device_t PROGMEM DeviceDescriptor =

+{

+  .Header                 = {.Size = sizeof(USB_Descriptor_Device_t), .Type = DTYPE_Device},

+

+  .USBSpecification       = VERSION_BCD(01.10),

+  .Class                  = CDC_CSCP_CDCClass,

+  .SubClass               = CDC_CSCP_NoSpecificSubclass,

+  .Protocol               = CDC_CSCP_NoSpecificProtocol,

+

+  .Endpoint0Size          = FIXED_CONTROL_ENDPOINT_SIZE,

+

+  .VendorID               = 0x03EB,

+  .ProductID              = 0x204B,

+  .ReleaseNumber          = VERSION_BCD(00.01),

+

+  .ManufacturerStrIndex   = 0x01,

+  .ProductStrIndex        = 0x02,

+  .SerialNumStrIndex      = USE_INTERNAL_SERIAL,

+

+  .NumberOfConfigurations = FIXED_NUM_CONFIGURATIONS

+};

+

+/** Configuration descriptor structure. This descriptor, located in FLASH memory, describes the usage

+ *  of the device in one of its supported configurations, including information about any device interfaces

+ *  and endpoints. The descriptor is read out by the USB host during the enumeration process when selecting

+ *  a configuration so that the host may correctly communicate with the USB device.

+ */

+const USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =

+{

+  .Config =

+    {

+      .Header                 = {.Size = sizeof(USB_Descriptor_Configuration_Header_t), .Type = DTYPE_Configuration},

+

+      .TotalConfigurationSize = sizeof(USB_Descriptor_Configuration_t),

+      .TotalInterfaces        = 2,

+

+      .ConfigurationNumber    = 1,

+      .ConfigurationStrIndex  = NO_DESCRIPTOR,

+

+      .ConfigAttributes       = (USB_CONFIG_ATTR_RESERVED | USB_CONFIG_ATTR_SELFPOWERED),

+

+      .MaxPowerConsumption    = USB_CONFIG_POWER_MA(100)

+    },

+

+  .CDC_CCI_Interface =

+    {

+      .Header                 = {.Size = sizeof(USB_Descriptor_Interface_t), .Type = DTYPE_Interface},

+

+      .InterfaceNumber        = 0,

+      .AlternateSetting       = 0,

+

+      .TotalEndpoints         = 1,

+

+      .Class                  = CDC_CSCP_CDCClass,

+      .SubClass               = CDC_CSCP_ACMSubclass,

+      .Protocol               = CDC_CSCP_ATCommandProtocol,

+

+      .InterfaceStrIndex      = NO_DESCRIPTOR

+    },

+

+  .CDC_Functional_Header =

+    {

+      .Header                 = {.Size = sizeof(USB_CDC_Descriptor_FunctionalHeader_t), .Type = DTYPE_CSInterface},

+      .Subtype                = CDC_DSUBTYPE_CSInterface_Header,

+

+      .CDCSpecification       = VERSION_BCD(01.10),

+    },

+

+  .CDC_Functional_ACM =

+    {

+      .Header                 = {.Size = sizeof(USB_CDC_Descriptor_FunctionalACM_t), .Type = DTYPE_CSInterface},

+      .Subtype                = CDC_DSUBTYPE_CSInterface_ACM,

+

+      .Capabilities           = 0x06,

+    },

+

+  .CDC_Functional_Union =

+    {

+      .Header                 = {.Size = sizeof(USB_CDC_Descriptor_FunctionalUnion_t), .Type = DTYPE_CSInterface},

+      .Subtype                = CDC_DSUBTYPE_CSInterface_Union,

+

+      .MasterInterfaceNumber  = 0,

+      .SlaveInterfaceNumber   = 1,

+    },

+

+  .CDC_NotificationEndpoint =

+    {

+      .Header                 = {.Size = sizeof(USB_Descriptor_Endpoint_t), .Type = DTYPE_Endpoint},

+

+      .EndpointAddress        = (ENDPOINT_DIR_IN | CDC_NOTIFICATION_EPNUM),

+      .Attributes             = (EP_TYPE_INTERRUPT | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA),

+      .EndpointSize           = CDC_NOTIFICATION_EPSIZE,

+      .PollingIntervalMS      = 0xFF

+    },

+

+  .CDC_DCI_Interface =

+    {

+      .Header                 = {.Size = sizeof(USB_Descriptor_Interface_t), .Type = DTYPE_Interface},

+

+      .InterfaceNumber        = 1,

+      .AlternateSetting       = 0,

+

+      .TotalEndpoints         = 2,

+

+      .Class                  = CDC_CSCP_CDCDataClass,

+      .SubClass               = CDC_CSCP_NoDataSubclass,

+      .Protocol               = CDC_CSCP_NoDataProtocol,

+

+      .InterfaceStrIndex      = NO_DESCRIPTOR

+    },

+

+  .CDC_DataOutEndpoint =

+    {

+      .Header                 = {.Size = sizeof(USB_Descriptor_Endpoint_t), .Type = DTYPE_Endpoint},

+

+      .EndpointAddress        = (ENDPOINT_DIR_OUT | CDC_RX_EPNUM),

+      .Attributes             = (EP_TYPE_BULK | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA),

+      .EndpointSize           = CDC_TXRX_EPSIZE,

+      .PollingIntervalMS      = 0x01

+    },

+

+  .CDC_DataInEndpoint =

+    {

+      .Header                 = {.Size = sizeof(USB_Descriptor_Endpoint_t), .Type = DTYPE_Endpoint},

+

+      .EndpointAddress        = (ENDPOINT_DIR_IN | CDC_TX_EPNUM),

+      .Attributes             = (EP_TYPE_BULK | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA),

+      .EndpointSize           = CDC_TXRX_EPSIZE,

+      .PollingIntervalMS      = 0x01

+    }

+};

+

+/** Language descriptor structure. This descriptor, located in FLASH memory, is returned when the host requests

+ *  the string descriptor with index 0 (the first index). It is actually an array of 16-bit integers, which indicate

+ *  via the language ID table available at USB.org what languages the device supports for its string descriptors.

+ */

+const USB_Descriptor_String_t PROGMEM LanguageString =

+{

+  .Header                 = {.Size = USB_STRING_LEN(1), .Type = DTYPE_String},

+

+  .UnicodeString          = {LANGUAGE_ID_ENG}

+};

+

+/** Manufacturer descriptor string. This is a Unicode string containing the manufacturer's details in human readable

+ *  form, and is read out upon request by the host when the appropriate string ID is requested, listed in the Device

+ *  Descriptor.

+ */

+const USB_Descriptor_String_t PROGMEM ManufacturerString =

+{

+  .Header                 = {.Size = USB_STRING_LEN(11), .Type = DTYPE_String},

+

+  .UnicodeString          = L"Dean Camera"

+};

+

+/** Product descriptor string. This is a Unicode string containing the product's details in human readable form,

+ *  and is read out upon request by the host when the appropriate string ID is requested, listed in the Device

+ *  Descriptor.

+ */

+const USB_Descriptor_String_t PROGMEM ProductString =

+{

+  .Header                 = {.Size = USB_STRING_LEN(23), .Type = DTYPE_String},

+

+  .UnicodeString          = L"LUFA USB-RS232 Adapter"

+};

+

+/** This function is called by the library when in device mode, and must be overridden (see library "USB Descriptors"

+ *  documentation) by the application code so that the address and size of a requested descriptor can be given

+ *  to the USB library. When the device receives a Get Descriptor request on the control endpoint, this function

+ *  is called so that the descriptor details can be passed back and the appropriate descriptor sent back to the

+ *  USB host.

+ */

+uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,

+                                    const uint8_t wIndex,

+                                    const void** const DescriptorAddress)

+{

+  const uint8_t  DescriptorType   = (wValue >> 8);

+  const uint8_t  DescriptorNumber = (wValue & 0xFF);

+

+  const void* Address = NULL;

+  uint16_t    Size    = NO_DESCRIPTOR;

+

+  switch (DescriptorType)

+  {

+    case DTYPE_Device:

+      Address = &DeviceDescriptor;

+      Size    = sizeof(USB_Descriptor_Device_t);

+      break;

+    case DTYPE_Configuration:

+      Address = &ConfigurationDescriptor;

+      Size    = sizeof(USB_Descriptor_Configuration_t);

+      break;

+    case DTYPE_String:

+      switch (DescriptorNumber)

+      {

+        case 0x00:

+          Address = &LanguageString;

+          Size    = pgm_read_byte(&LanguageString.Header.Size);

+          break;

+        case 0x01:

+          Address = &ManufacturerString;

+          Size    = pgm_read_byte(&ManufacturerString.Header.Size);

+          break;

+        case 0x02:

+          Address = &ProductString;

+          Size    = pgm_read_byte(&ProductString.Header.Size);

+          break;

+      }

+

+      break;

+  }

+

+  *DescriptorAddress = Address;

+  return Size;

+}

+

diff --git a/software/avr.lib/lufa-descriptor-usbserial.h b/software/avr.lib/lufa-descriptor-usbserial.h
new file mode 100644
index 0000000..97afd41
--- /dev/null
+++ b/software/avr.lib/lufa-descriptor-usbserial.h
@@ -0,0 +1,89 @@
+/*

+             LUFA Library

+     Copyright (C) Dean Camera, 2012.

+

+  dean [at] fourwalledcubicle [dot] com

+           www.lufa-lib.org

+*/

+

+/*

+  Copyright 2012  Dean Camera (dean [at] fourwalledcubicle [dot] com)

+

+  Permission to use, copy, modify, distribute, and sell this

+  software and its documentation for any purpose is hereby granted

+  without fee, provided that the above copyright notice appear in

+  all copies and that both that the copyright notice and this

+  permission notice and warranty disclaimer appear in supporting

+  documentation, and that the name of the author not be used in

+  advertising or publicity pertaining to distribution of the

+  software without specific, written prior permission.

+

+  The author disclaim all warranties with regard to this

+  software, including all implied warranties of merchantability

+  and fitness.  In no event shall the author be liable for any

+  special, indirect or consequential damages or any damages

+  whatsoever resulting from loss of use, data or profits, whether

+  in an action of contract, negligence or other tortious action,

+  arising out of or in connection with the use or performance of

+  this software.

+*/

+

+/** \file

+ *

+ *  Header file for Descriptors.c.

+ */

+

+#ifndef _DESCRIPTORS_H_

+#define _DESCRIPTORS_H_

+

+  /* Includes: */

+    #include <avr/pgmspace.h>

+

+    #include <LUFA/Drivers/USB/USB.h>

+

+  /* Macros: */

+    /** Endpoint number of the CDC device-to-host notification IN endpoint. */

+    #define CDC_NOTIFICATION_EPNUM         2

+

+    /** Endpoint number of the CDC device-to-host data IN endpoint. */

+    #define CDC_TX_EPNUM                   3

+

+    /** Endpoint number of the CDC host-to-device data OUT endpoint. */

+    #define CDC_RX_EPNUM                   4

+

+    /** Size in bytes of the CDC device-to-host notification IN endpoint. */

+    #define CDC_NOTIFICATION_EPSIZE        8

+

+    /** Size in bytes of the CDC data IN and OUT endpoints. */

+    #define CDC_TXRX_EPSIZE                16

+

+  /* Type Defines: */

+    /** Type define for the device configuration descriptor structure. This must be defined in the

+     *  application code, as the configuration descriptor contains several sub-descriptors which

+     *  vary between devices, and which describe the device's usage to the host.

+     */

+    typedef struct

+    {

+      USB_Descriptor_Configuration_Header_t    Config;

+

+      // CDC Command Interface

+      USB_Descriptor_Interface_t               CDC_CCI_Interface;

+      USB_CDC_Descriptor_FunctionalHeader_t    CDC_Functional_Header;

+      USB_CDC_Descriptor_FunctionalACM_t       CDC_Functional_ACM;

+      USB_CDC_Descriptor_FunctionalUnion_t     CDC_Functional_Union;

+      USB_Descriptor_Endpoint_t                CDC_NotificationEndpoint;

+

+      // CDC Data Interface

+      USB_Descriptor_Interface_t               CDC_DCI_Interface;

+      USB_Descriptor_Endpoint_t                CDC_DataOutEndpoint;

+      USB_Descriptor_Endpoint_t                CDC_DataInEndpoint;

+    } USB_Descriptor_Configuration_t;

+

+  /* Function Prototypes: */

+    uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,

+                                        const uint8_t wIndex,

+                                        const void** const DescriptorAddress)

+                                        ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);

+

+#endif

+

diff --git a/software/avr.lib/util.c b/software/avr.lib/util.c
new file mode 100644
index 0000000..d927f8e
--- /dev/null
+++ b/software/avr.lib/util.c
@@ -0,0 +1,93 @@
+/*
+ *  spreadspace avr utils
+ *
+ *
+ *  Copyright (C) 2012 Christian Pointner <equinox@spreadspace.org>
+ *
+ *  This file is part of spreadspace avr utils.
+ *
+ *  spreadspace avr utils 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 3 of the License, or
+ *  any later version.
+ *
+ *  spreadspace avr utils 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 spreadspace avr utils. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <avr/interrupt.h>
+#include <avr/io.h>
+#include <util/delay.h>
+
+#include "util.h"
+
+#if defined(CLKPR)
+#define CPU_PRESCALE(n) do { CLKPR = 0x80; CLKPR = (n); } while(0)
+#else
+#define CPU_PRESCALE(n)
+#endif
+
+void cpu_init(void)
+{
+  CPU_PRESCALE(0);
+}
+
+#if defined(__BOARD_teensy1__)
+  #define BOOTLOADER_VEC 0x3E00
+#elif defined(__BOARD_teensy2__)
+  #define BOOTLOADER_VEC 0x7E00
+#elif defined(__BOARD_teensy1pp__)
+  #define BOOTLOADER_VEC 0xFC00
+#elif defined(__BOARD_teensy2pp__)
+  #define BOOTLOADER_VEC 0x1FC00
+#elif defined(__BOARD_hhd70dongle__)
+  #define BOOTLOADER_VEC 0x3800
+#endif
+
+typedef void (*f_ptr_type)(void);
+f_ptr_type start_bootloader = (f_ptr_type)BOOTLOADER_VEC;
+
+void reset2bootloader(void)
+{
+#if defined(__BOARD_teensy1__) || defined(__BOARD_teensy1pp__) || defined(__BOARD_teensy2__) || defined(__BOARD_teensy2pp__) || defined(__BOARD_hhd70dongle__)
+  cli();
+  // disable watchdog, if enabled
+  // disable all peripherals
+  UDCON = 1;
+  USBCON = (1<<FRZCLK);  // disable USB
+  UCSR1B = 0;
+  _delay_ms(5);
+  #if defined(__BOARD_teensy1__)
+    EIMSK = 0; PCICR = 0; SPCR = 0; ACSR = 0; EECR = 0;
+    TIMSK0 = 0; TIMSK1 = 0; UCSR1B = 0;
+    DDRB = 0; DDRC = 0; DDRD = 0;
+    PORTB = 0; PORTC = 0; PORTD = 0;
+  #elif defined(__BOARD_teensy2__)
+    EIMSK = 0; PCICR = 0; SPCR = 0; ACSR = 0; EECR = 0; ADCSRA = 0;
+    TIMSK0 = 0; TIMSK1 = 0; TIMSK3 = 0; TIMSK4 = 0; UCSR1B = 0; TWCR = 0;
+    DDRB = 0; DDRC = 0; DDRD = 0; DDRE = 0; DDRF = 0; TWCR = 0;
+    PORTB = 0; PORTC = 0; PORTD = 0; PORTE = 0; PORTF = 0;
+  #elif defined(__BOARD_teensy1pp__)
+    EIMSK = 0; PCICR = 0; SPCR = 0; ACSR = 0; EECR = 0; ADCSRA = 0;
+    TIMSK0 = 0; TIMSK1 = 0; TIMSK2 = 0; TIMSK3 = 0; UCSR1B = 0; TWCR = 0;
+    DDRA = 0; DDRB = 0; DDRC = 0; DDRD = 0; DDRE = 0; DDRF = 0;
+    PORTA = 0; PORTB = 0; PORTC = 0; PORTD = 0; PORTE = 0; PORTF = 0;
+  #elif defined(__BOARD_teensy2pp__)
+    EIMSK = 0; PCICR = 0; SPCR = 0; ACSR = 0; EECR = 0; ADCSRA = 0;
+    TIMSK0 = 0; TIMSK1 = 0; TIMSK2 = 0; TIMSK3 = 0; UCSR1B = 0; TWCR = 0;
+    DDRA = 0; DDRB = 0; DDRC = 0; DDRD = 0; DDRE = 0; DDRF = 0;
+    PORTA = 0; PORTB = 0; PORTC = 0; PORTD = 0; PORTE = 0; PORTF = 0;
+  #elif defined(__BOARD_hhd70dongle__)
+    EIMSK = 0; PCICR = 0; SPCR = 0; ACSR = 0; EECR = 0; ADCSRA = 0;
+    TIMSK0 = 0; TIMSK1 = 0; TIMSK3 = 0; TIMSK4 = 0; UCSR1B = 0; TWCR = 0;
+    DDRB = 0; DDRC = 0; DDRD = 0; DDRE = 0; DDRF = 0; TWCR = 0;
+    PORTB = 0; PORTC = 0; PORTD = 0; PORTE = 0; PORTF = 0;
+  #endif
+  start_bootloader();
+#endif
+}
diff --git a/software/avr.lib/util.h b/software/avr.lib/util.h
new file mode 100644
index 0000000..77afa2e
--- /dev/null
+++ b/software/avr.lib/util.h
@@ -0,0 +1,29 @@
+/*
+ *  spreadspace avr utils
+ *
+ *
+ *  Copyright (C) 2012 Christian Pointner <equinox@spreadspace.org>
+ *
+ *  This file is part of spreadspace avr utils.
+ *
+ *  spreadspace avr utils 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 3 of the License, or
+ *  any later version.
+ *
+ *  spreadspace avr utils 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 spreadspace avr utils. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef SPREADSPACE_util_h_INCLUDED
+#define SPREADSPACE_util_h_INCLUDED
+
+void cpu_init(void);
+void reset2bootloader(void);
+
+#endif