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-rwxr-xr-xnuttx/arch/avr/include/avr/avr.h62
-rw-r--r--nuttx/arch/avr/include/avr/irq.h137
-rw-r--r--nuttx/arch/avr/include/avr/limits.h84
-rw-r--r--nuttx/arch/avr/include/avr/syscall.h138
-rw-r--r--nuttx/arch/avr/include/avr/types.h95
-rw-r--r--nuttx/arch/avr/include/avr32/irq.h5
-rw-r--r--nuttx/arch/avr/include/avr32/limits.h84
-rw-r--r--nuttx/arch/avr/include/avr32/types.h95
-rw-r--r--nuttx/arch/avr/include/limits.h40
-rw-r--r--nuttx/arch/avr/include/types.h45
-rw-r--r--nuttx/arch/avr/src/at32uc3/at32uc3_internal.h8
-rw-r--r--nuttx/arch/avr/src/atmega/Make.defs64
-rw-r--r--nuttx/arch/avr/src/atmega/atmega_internal.h245
-rw-r--r--nuttx/arch/avr/src/atmega/atmega_memorymap.h68
-rw-r--r--nuttx/arch/avr/src/atmega/chip.h75
-rw-r--r--nuttx/arch/avr/src/avr/README.txt2
16 files changed, 1169 insertions, 78 deletions
diff --git a/nuttx/arch/avr/include/avr/avr.h b/nuttx/arch/avr/include/avr/avr.h
new file mode 100755
index 000000000..d6b6f428d
--- /dev/null
+++ b/nuttx/arch/avr/include/avr/avr.h
@@ -0,0 +1,62 @@
+/************************************************************************************
+ * arch/avr/include/avr/avr.h
+ *
+ * Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ * Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ * used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************************/
+
+#ifndef __ARCH_AVR_INCLUDE_AVR_AVR_H
+#define __ARCH_AVR_INCLUDE_AVR_AVR_H
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+
+/************************************************************************************
+ * Pre-processor Definitions
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Types
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Data
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+#endif /* __ARCH_AVR_INCLUDE_AVR_AVR_H */
+
diff --git a/nuttx/arch/avr/include/avr/irq.h b/nuttx/arch/avr/include/avr/irq.h
new file mode 100644
index 000000000..16966d194
--- /dev/null
+++ b/nuttx/arch/avr/include/avr/irq.h
@@ -0,0 +1,137 @@
+/****************************************************************************
+ * arch/avr/include/avr/irq.h
+ *
+ * Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ * Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ * used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/* This file should never be included directed but, rather, only indirectly
+ * through nuttx/irq.h
+ */
+
+#ifndef __ARCH_AVR_INCLUDE_AVR_IRQ_H
+#define __ARCH_AVR_INCLUDE_AVR_IRQ_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/irq.h>
+#include <arch/avr/avr.h>
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/* Register state save array indices */
+
+#define REG_Rx 0 /* Just a placeholder */
+
+/* Size of the register state save array (in bytes?) */
+
+#define XCPTCONTEXT_REGS 1
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/* This struct defines the way the registers are stored. */
+
+#ifndef __ASSEMBLY__
+struct xcptcontext
+{
+ /* The following function pointer is non-zero if there are pending signals
+ * to be processed.
+ */
+
+#ifndef CONFIG_DISABLE_SIGNALS
+ void *sigdeliver; /* Actual type is sig_deliver_t */
+
+ /* These are saved copies of PC and SR used during signal processing.*/
+
+ uint16_t saved_pc;
+ uint8_t saved_sr;
+#endif
+
+ /* Register save area */
+
+ uint8_t regs[XCPTCONTEXT_REGS];
+};
+#endif
+
+/****************************************************************************
+ * Inline functions
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+/* Save the current interrupt enable state & disable all interrupts */
+
+static inline irqstate_t irqsave(void)
+{
+ /* Needs to return the current interrupt state, then disable interrupts */
+#warning "Not implemented"
+ return 0
+}
+
+/* Restore saved interrupt state */
+
+static inline void irqrestore(irqstate_t flags)
+{
+ /* Based on the provided interrupt flags, conditionally enable interrupts */
+#warning "Not implemented"
+}
+#endif /* __ASSEMBLY__ */
+
+/****************************************************************************
+ * Public Variables
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+#ifdef __cplusplus
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+#undef EXTERN
+#ifdef __cplusplus
+}
+#endif
+#endif
+
+#endif /* __ARCH_AVR_INCLUDE_AVR_IRQ_H */
+
diff --git a/nuttx/arch/avr/include/avr/limits.h b/nuttx/arch/avr/include/avr/limits.h
new file mode 100644
index 000000000..d594408ce
--- /dev/null
+++ b/nuttx/arch/avr/include/avr/limits.h
@@ -0,0 +1,84 @@
+/****************************************************************************
+ * arch/avr/include/avr/limits.h
+ *
+ * Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ * Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ * used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __ARCH_AVR_INCLUDE_AVR_LIMITS_H
+#define __ARCH_AVR_INCLUDE_AVR_LIMITS_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+#define CHAR_BIT 8
+#define SCHAR_MIN 0x80
+#define SCHAR_MAX 0x7f
+#define UCHAR_MAX 0xff
+
+/* These could be different on machines where char is unsigned */
+
+#define CHAR_MIN SCHAR_MIN
+#define CHAR_MAX SCHAR_MAX
+
+#define SHRT_MIN 0x8000
+#define SHRT_MAX 0x7fff
+#define USHRT_MAX 0xffff
+
+/* Integer is two bytes */
+
+#define INT_MIN 0x8000
+#define INT_MAX 0x7fff
+#define UINT_MAX 0xffff
+
+/* These change on 32-bit and 64-bit platforms */
+
+#define LONG_MAX 0x80000000
+#define LONG_MIN 0x7fffffff
+#define ULONG_MAX 0xffffffff
+
+#define LLONG_MAX 0x8000000000000000
+#define LLONG_MIN 0x7fffffffffffffff
+#define ULLONG_MAX 0xffffffffffffffff
+
+/* A pointer is two bytes */
+
+#define PTR_MIN 0x8000
+#define PTR_MAX 0x7fff
+#define UPTR_MAX 0xffff
+
+#endif /* __ARCH_AVR_INCLUDE_AVR_LIMITS_H */
+
diff --git a/nuttx/arch/avr/include/avr/syscall.h b/nuttx/arch/avr/include/avr/syscall.h
new file mode 100644
index 000000000..de5c4e317
--- /dev/null
+++ b/nuttx/arch/avr/include/avr/syscall.h
@@ -0,0 +1,138 @@
+/****************************************************************************
+ * arch/avr/include/avr/syscall.h
+ *
+ * Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ * Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ * used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/* This file should never be included directed but, rather, only indirectly
+ * through include/syscall.h or include/sys/sycall.h
+ */
+
+#ifndef __ARCH_AVR_INCLUDE_AVR_SYSCALL_H
+#define __ARCH_AVR_INCLUDE_AVR_SYSCALL_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <stdint.h>
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+
+#define SYS_syscall 0x80
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Variables
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+#ifdef __cplusplus
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+/* SWI with SYS_ call number and six parameters */
+#warning "REVISIT"
+EXTERN uintptr_t sys_call6(unsigned int nbr, uintptr_t parm1,
+ uintptr_t parm2, uintptr_t parm3,
+ uintptr_t parm4, uintptr_t parm5,
+ uintptr_t parm6);
+
+/* SWI with SYS_ call number and no parameters */
+
+static inline uintptr_t sys_call0(unsigned int nbr)
+{
+ return sys_call6(nbr, 0, 0, 0, 0, 0, 0);
+}
+
+/* SWI with SYS_ call number and one parameter */
+
+static inline uintptr_t sys_call1(unsigned int nbr, uintptr_t parm1)
+{
+ return sys_call6(nbr, parm1, 0, 0, 0, 0, 0);
+}
+
+/* SWI with SYS_ call number and two parameters */
+
+static inline uintptr_t sys_call2(unsigned int nbr, uintptr_t parm1,
+ uintptr_t parm2)
+{
+ return sys_call6(nbr, parm1, parm2, 0, 0, 0, 0);
+}
+
+/* SWI with SYS_ call number and three parameters */
+
+static inline uintptr_t sys_call3(unsigned int nbr, uintptr_t parm1,
+ uintptr_t parm2, uintptr_t parm3)
+{
+ return sys_call6(nbr, parm1, parm2, parm3, 0, 0, 0);
+}
+
+/* SWI with SYS_ call number and four parameters */
+
+static inline uintptr_t sys_call4(unsigned int nbr, uintptr_t parm1,
+ uintptr_t parm2, uintptr_t parm3,
+ uintptr_t parm4)
+{
+ return sys_call6(nbr, parm1, parm2, parm3, parm4, 0, 0);
+}
+
+/* SWI with SYS_ call number and five parameters */
+
+static inline uintptr_t sys_call5(unsigned int nbr, uintptr_t parm1,
+ uintptr_t parm2, uintptr_t parm3,
+ uintptr_t parm4, uintptr_t parm5)
+{
+ return sys_call6(nbr, parm1, parm2, parm3, parm4, parm5, 0);
+}
+
+#undef EXTERN
+#ifdef __cplusplus
+}
+#endif
+#endif
+
+#endif /* __ARCH_AVR_INCLUDE_AVR_SYSCALL_H */
+
diff --git a/nuttx/arch/avr/include/avr/types.h b/nuttx/arch/avr/include/avr/types.h
new file mode 100644
index 000000000..2e30414c4
--- /dev/null
+++ b/nuttx/arch/avr/include/avr/types.h
@@ -0,0 +1,95 @@
+/****************************************************************************
+ * arch/avr/include/avr/types.h
+ *
+ * Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ * Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ * used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/* This file should never be included directed but, rather, only indirectly
+ * through stdint.h
+ */
+
+#ifndef __ARCH_AVR_INCLUDE_AVR_TYPES_H
+#define __ARCH_AVR_INCLUDE_AVR_TYPES_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Type Declarations
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+/* These are the sizes of the standard integer types. NOTE that these type
+ * names have a leading underscore character. This file will be included
+ * (indirectly) by include/stdint.h and typedef'ed to the final name without
+ * the underscore character. This roundabout way of doings things allows
+ * the stdint.h to be removed from the include/ directory in the event that
+ * the user prefers to use the definitions provided by their toolchain header
+ * files
+ */
+
+typedef signed char _int8_t;
+typedef unsigned char _uint8_t;
+
+typedef signed short _int16_t;
+typedef unsigned short _uint16_t;
+
+typedef signed int _int32_t;
+typedef unsigned int _uint32_t;
+
+typedef signed long long _int64_t;
+typedef unsigned long long _uint64_t;
+#define __INT64_DEFINED
+
+/* A pointer is 4 bytes */
+
+typedef signed int _intptr_t;
+typedef unsigned int _uintptr_t;
+
+/* This is the size of the interrupt state save returned by irqsave(). */
+
+typedef unsigned char irqstate_t;
+
+#endif /* __ASSEMBLY__ */
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#endif /* __ARCH_AVR_INCLUDE_AVR_TYPES_H */
+
diff --git a/nuttx/arch/avr/include/avr32/irq.h b/nuttx/arch/avr/include/avr32/irq.h
index 691bc72d4..5d4ddf6b1 100644
--- a/nuttx/arch/avr/include/avr32/irq.h
+++ b/nuttx/arch/avr/include/avr32/irq.h
@@ -189,11 +189,6 @@ static inline void irqrestore(irqstate_t flags)
}
}
-static inline void system_call3(unsigned int nbr, uintptr_t parm1,
- uintptr_t parm2, uintptr_t parm3)
-{
- /* To be provided */
-}
#endif /* __ASSEMBLY__ */
/****************************************************************************
diff --git a/nuttx/arch/avr/include/avr32/limits.h b/nuttx/arch/avr/include/avr32/limits.h
new file mode 100644
index 000000000..28cc1708c
--- /dev/null
+++ b/nuttx/arch/avr/include/avr32/limits.h
@@ -0,0 +1,84 @@
+/****************************************************************************
+ * arch/avr/include/avr32/limits.h
+ *
+ * Copyright (C) 2010, 2011 Gregory Nutt. All rights reserved.
+ * Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ * used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __ARCH_AVR_INCLUDE_AVR32_LIMITS_H
+#define __ARCH_AVR_INCLUDE_AVR32_LIMITS_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+#define CHAR_BIT 8
+#define SCHAR_MIN 0x80
+#define SCHAR_MAX 0x7f
+#define UCHAR_MAX 0xff
+
+/* These could be different on machines where char is unsigned */
+
+#define CHAR_MIN SCHAR_MIN
+#define CHAR_MAX SCHAR_MAX
+
+#define SHRT_MIN 0x8000
+#define SHRT_MAX 0x7fff
+#define USHRT_MAX 0xffff
+
+/* Integer is four bytes */
+
+#define INT_MIN 0x80000000
+#define INT_MAX 0x7fffffff
+#define UINT_MAX 0xffffffff
+
+/* These change on 32-bit and 64-bit platforms */
+
+#define LONG_MAX 0x80000000
+#define LONG_MIN 0x7fffffff
+#define ULONG_MAX 0xffffffff
+
+#define LLONG_MAX 0x8000000000000000
+#define LLONG_MIN 0x7fffffffffffffff
+#define ULLONG_MAX 0xffffffffffffffff
+
+/* A pointer is four bytes */
+
+#define PTR_MIN 0x80000000
+#define PTR_MAX 0x7fffffff
+#define UPTR_MAX 0xffffffff
+
+#endif /* __ARCH_AVR_INCLUDE_AVR32_LIMITS_H */
+
diff --git a/nuttx/arch/avr/include/avr32/types.h b/nuttx/arch/avr/include/avr32/types.h
new file mode 100644
index 000000000..4b5f20cea
--- /dev/null
+++ b/nuttx/arch/avr/include/avr32/types.h
@@ -0,0 +1,95 @@
+/****************************************************************************
+ * arch/avr/include/avr32/types.h
+ *
+ * Copyright (C) 2010, 2011 Gregory Nutt. All rights reserved.
+ * Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ * used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/* This file should never be included directed but, rather, only indirectly
+ * through stdint.h
+ */
+
+#ifndef __ARCH_AVR_INCLUDE_AVR32_TYPES_H
+#define __ARCH_AVR_INCLUDE_AVR32_TYPES_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Type Declarations
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+/* These are the sizes of the standard integer types. NOTE that these type
+ * names have a leading underscore character. This file will be included
+ * (indirectly) by include/stdint.h and typedef'ed to the final name without
+ * the underscore character. This roundabout way of doings things allows
+ * the stdint.h to be removed from the include/ directory in the event that
+ * the user prefers to use the definitions provided by their toolchain header
+ * files
+ */
+
+typedef signed char _int8_t;
+typedef unsigned char _uint8_t;
+
+typedef signed short _int16_t;
+typedef unsigned short _uint16_t;
+
+typedef signed int _int32_t;
+typedef unsigned int _uint32_t;
+
+typedef signed long long _int64_t;
+typedef unsigned long long _uint64_t;
+#define __INT64_DEFINED
+
+/* A pointer is 4 bytes */
+
+typedef signed int _intptr_t;
+typedef unsigned int _uintptr_t;
+
+/* This is the size of the interrupt state save returned by irqsave(). */
+
+typedef unsigned int irqstate_t;
+
+#endif /* __ASSEMBLY__ */
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#endif /* __ARCH_AVR_INCLUDE_AVR32_TYPES_H */
+
diff --git a/nuttx/arch/avr/include/limits.h b/nuttx/arch/avr/include/limits.h
index 80413e9c9..221383473 100644
--- a/nuttx/arch/avr/include/limits.h
+++ b/nuttx/arch/avr/include/limits.h
@@ -1,7 +1,7 @@
/****************************************************************************
* arch/avr/include/limits.h
*
- * Copyright (C) 2010 Gregory Nutt. All rights reserved.
+ * Copyright (C) 2010, 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
@@ -44,39 +44,13 @@
* Definitions
****************************************************************************/
-#define CHAR_BIT 8
-#define SCHAR_MIN 0x80
-#define SCHAR_MAX 0x7f
-#define UCHAR_MAX 0xff
+/* Include AVR architecture-specific limits */
-/* These could be different on machines where char is unsigned */
-
-#define CHAR_MIN SCHAR_MIN
-#define CHAR_MAX SCHAR_MAX
-
-#define SHRT_MIN 0x8000
-#define SHRT_MAX 0x7fff
-#define USHRT_MAX 0xffff
-
-#define INT_MIN 0x80000000
-#define INT_MAX 0x7fffffff
-#define UINT_MAX 0xffffffff
-
-/* These change on 32-bit and 64-bit platforms */
-
-#define LONG_MAX 0x80000000
-#define LONG_MIN 0x7fffffff
-#define ULONG_MAX 0xffffffff
-
-#define LLONG_MAX 0x8000000000000000
-#define LLONG_MIN 0x7fffffffffffffff
-#define ULLONG_MAX 0xffffffffffffffff
-
-/* A pointer is 4 bytes */
-
-#define PTR_MIN 0x80000000
-#define PTR_MAX 0x7fffffff
-#define UPTR_MAX 0xffffffff
+#ifdef CONFIG_ARCH_AVR32
+# include <arch/avr32/limits.h>
+#else
+# include <arch/avr/limits.h>
+#endif
#endif /* __ARCH_AVR_INCLUDE_LIMITS_H */
diff --git a/nuttx/arch/avr/include/types.h b/nuttx/arch/avr/include/types.h
index c93e70df4..48481039f 100644
--- a/nuttx/arch/avr/include/types.h
+++ b/nuttx/arch/avr/include/types.h
@@ -1,7 +1,7 @@
/****************************************************************************
* arch/avr/include/types.h
*
- * Copyright (C) 2010 Gregory Nutt. All rights reserved.
+ * Copyright (C) 2010, 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
@@ -44,6 +44,14 @@
* Included Files
****************************************************************************/
+/* Include AVR architecture-specific types definitions */
+
+#ifdef CONFIG_ARCH_AVR32
+# include <arch/avr32/types.h>
+#else
+# include <arch/avr/types.h>
+#endif
+
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
@@ -52,41 +60,6 @@
* Type Declarations
****************************************************************************/
-#ifndef __ASSEMBLY__
-
-/* These are the sizes of the standard integer types. NOTE that these type
- * names have a leading underscore character. This file will be included
- * (indirectly) by include/stdint.h and typedef'ed to the final name without
- * the underscore character. This roundabout way of doings things allows
- * the stdint.h to be removed from the include/ directory in the event that
- * the user prefers to use the definitions provided by their toolchain header
- * files
- */
-
-typedef signed char _int8_t;
-typedef unsigned char _uint8_t;
-
-typedef signed short _int16_t;
-typedef unsigned short _uint16_t;
-
-typedef signed int _int32_t;
-typedef unsigned int _uint32_t;
-
-typedef signed long long _int64_t;
-typedef unsigned long long _uint64_t;
-#define __INT64_DEFINED
-
-/* A pointer is 4 bytes */
-
-typedef signed int _intptr_t;
-typedef unsigned int _uintptr_t;
-
-/* This is the size of the interrupt state save returned by irqsave(). */
-
-typedef unsigned int irqstate_t;
-
-#endif /* __ASSEMBLY__ */
-
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
diff --git a/nuttx/arch/avr/src/at32uc3/at32uc3_internal.h b/nuttx/arch/avr/src/at32uc3/at32uc3_internal.h
index 4e038589d..6fa53ef05 100644
--- a/nuttx/arch/avr/src/at32uc3/at32uc3_internal.h
+++ b/nuttx/arch/avr/src/at32uc3/at32uc3_internal.h
@@ -1,5 +1,5 @@
/****************************************************************************
- * arch/avr/src/at32uc3b/at32uc3_internal.h
+ * arch/avr/src/at32uc3/at32uc3_internal.h
*
* Copyright (C) 2010 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
@@ -33,8 +33,8 @@
*
****************************************************************************/
-#ifndef __ARCH_AVR_SRC_AVR32_AT32UC3_INTERNAL_H
-#define __ARCH_AVR_SRC_AVR32_AT32UC3_INTERNAL_H
+#ifndef __ARCH_AVR_SRC_AT32UC3_AT32UC3_INTERNAL_H
+#define __ARCH_AVR_SRC_AT32UC3_AT32UC3_INTERNAL_H
/****************************************************************************
* Included Files
@@ -340,5 +340,5 @@ EXTERN void gpio_irqdisable(int irq);
#endif
#endif /* __ASSEMBLY__ */
-#endif /* __ARCH_AVR_SRC_AVR32_AT32UC3_INTERNAL_H */
+#endif /* __ARCH_AVR_SRC_AT32UC3_AT32UC3_INTERNAL_H */
diff --git a/nuttx/arch/avr/src/atmega/Make.defs b/nuttx/arch/avr/src/atmega/Make.defs
new file mode 100644
index 000000000..932f23a2d
--- /dev/null
+++ b/nuttx/arch/avr/src/atmega/Make.defs
@@ -0,0 +1,64 @@
+############################################################################
+# arch/avr/src/atmega/Make.defs
+#
+# Copyright (C) 2011 Gregory Nutt. All rights reserved.
+# Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# 1. Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in
+# the documentation and/or other materials provided with the
+# distribution.
+# 3. Neither the name NuttX nor the names of its contributors may be
+# used to endorse or promote products derived from this software
+# without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+############################################################################
+
+# The start-up, "head", file
+
+HEAD_ASRC = atmega_head.S
+
+# Common AVR files
+
+CMN_ASRCS = up_exceptions.S up_fullcontextrestore.S up_switchcontext.S
+CMN_CSRCS = up_assert.c up_allocateheap.c up_blocktask.c up_copystate.c \
+ up_createstack.c up_mdelay.c up_udelay.c up_exit.c up_idle.c \
+ up_initialize.c up_initialstate.c up_interruptcontext.c \
+ up_modifyreg8.c up_modifyreg16.c up_modifyreg32.c \
+ up_releasepending.c up_releasestack.c up_reprioritizertr.c \
+ up_schedulesigaction.c up_sigdeliver.c up_unblocktask.c \
+ up_usestack.c up_doirq.c
+
+# Required ATMEGA files
+
+CHIP_ASRCS =
+CHIP_CSRCS = atmega_clkinit.c atmega_gpio.c atmega_irq.c \
+ atmega_lowconsole.c atmega_lowinit.c atmega_serial.c \
+ atmega_timerisr.c
+
+# Configuration-dependent ATMEGA files
+
+ifeq ($(CONFIG_AVR_GPIOIRQ),y)
+CHIP_CSRCS += atmega_gpioirq.c
+endif
+
+
diff --git a/nuttx/arch/avr/src/atmega/atmega_internal.h b/nuttx/arch/avr/src/atmega/atmega_internal.h
new file mode 100644
index 000000000..6a4b2056c
--- /dev/null
+++ b/nuttx/arch/avr/src/atmega/atmega_internal.h
@@ -0,0 +1,245 @@
+/****************************************************************************
+ * arch/avr/src/atmega/atmega_internal.h
+ *
+ * Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ * Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ * used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __ARCH_AVR_SRC_ATMEGA_ATMEGA_INTERNAL_H
+#define __ARCH_AVR_SRC_ATMEGA_ATMEGA_INTERNAL_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include "atmega_config.h"
+
+#ifdef CONFIG_AVR_GPIOIRQ
+# include <nuttx/irq.h>
+#endif
+
+#include <stdint.h>
+#include <stdbool.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/* Bit-encoded input to atmega_configgpio() ********************************/
+# warning "Missing definitions"
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+/****************************************************************************
+ * Inline Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: up_clkinit
+ *
+ * Description:
+ * Initialiaze clock/PLL settings per the definitions in the board.h file.
+ *
+ ****************************************************************************/
+
+EXTERN void up_clkinitialize(void);
+
+/****************************************************************************
+ * Name: usart_reset
+ *
+ * Description:
+ * Reset a USART.
+ *
+ ****************************************************************************/
+
+EXTERN void usart_reset(uintptr_t usart_base);
+
+/****************************************************************************
+ * Name: usart_configure
+ *
+ * Description:
+ * Configure a USART as a RS-232 UART.
+ *
+ ****************************************************************************/
+
+void usart_configure(uintptr_t usart_base, uint32_t baud, unsigned int parity,
+ unsigned int nbits, bool stop2);
+
+/****************************************************************************
+ * Name: up_consoleinit
+ *
+ * Description:
+ * Initialize a console for debug output. This function is called very
+ * early in the intialization sequence to configure the serial console
+ * uart (only).
+ *
+ ****************************************************************************/
+
+EXTERN void up_consoleinit(void);
+
+/****************************************************************************
+ * Name: up_boardinit
+ *
+ * Description:
+ * This function must be provided by the board-specific logic in the
+ * directory configs/<board-name>/up_boot.c.
+ *
+ ****************************************************************************/
+
+EXTERN void up_boardinitialize(void);
+
+/****************************************************************************
+ * Name: atmega_configgpio
+ *
+ * Description:
+ * Configure a GPIO pin based on bit-encoded description of the pin.
+ *
+ ****************************************************************************/
+
+EXTERN int atmega_configgpio(uint16_t cfgset);
+
+/****************************************************************************
+ * Name: atmega_gpiowrite
+ *
+ * Description:
+ * Write one or zero to the selected GPIO pin
+ *
+ ****************************************************************************/
+
+EXTERN void atmega_gpiowrite(uint16_t pinset, bool value);
+
+/****************************************************************************
+ * Name: atmega_gpioread
+ *
+ * Description:
+ * Read one or zero from the selected GPIO pin
+ *
+ ****************************************************************************/
+
+EXTERN bool atmega_gpioread(uint16_t pinset);
+
+/****************************************************************************
+ * Name: gpio_irqinitialize
+ *
+ * Description:
+ * Initialize all vectors to the unexpected interrupt handler
+ *
+ * Configuration Notes:
+ * Configuration CONFIG_AVR_GPIOIRQ must be selected to enable the
+ * overall GPIO IRQ feature.
+ *
+ * Assumptions:
+ * Called during the early boot sequence before global interrupts have
+ * been enabled.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_AVR_GPIOIRQ
+EXTERN void weak_function gpio_irqinitialize(void);
+#endif
+
+/****************************************************************************
+ * Name: gpio_irqattach
+ *
+ * Description:
+ * Attach in GPIO interrupt to the provide 'isr'
+ *
+ * Configuration Notes:
+ * Configuration CONFIG_AVR_GPIOIRQ must be selected to enable the
+ * overall GPIO IRQ feature.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_AVR_GPIOIRQ
+EXTERN int gpio_irqattach(int irq, xcpt_t newisr, xcpt_t *oldisr);
+#endif
+
+/****************************************************************************
+ * Name: gpio_irqenable
+ *
+ * Description:
+ * Enable the GPIO IRQ specified by 'irq'
+ *
+ * Configuration Notes:
+ * Configuration CONFIG_AVR_GPIOIRQ must be selected to enable the
+ * overall GPIO IRQ feature.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_AVR_GPIOIRQ
+EXTERN void gpio_irqenable(int irq);
+#endif
+
+/*****************************************************************************
+ * Name: gpio_irqdisable
+ *
+ * Description:
+ * Disable the GPIO IRQ specified by 'irq'
+ *
+ * Configuration Notes:
+ * Configuration CONFIG_AVR_GPIOIRQ must be selected to enable the
+ * overall GPIO IRQ feature.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_AVR_GPIOIRQ
+EXTERN void gpio_irqdisable(int irq);
+#endif
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* __ARCH_AVR_SRC_ATMEGA_ATMEGA_INTERNAL_H */
+
diff --git a/nuttx/arch/avr/src/atmega/atmega_memorymap.h b/nuttx/arch/avr/src/atmega/atmega_memorymap.h
new file mode 100644
index 000000000..a509f7657
--- /dev/null
+++ b/nuttx/arch/avr/src/atmega/atmega_memorymap.h
@@ -0,0 +1,68 @@
+/************************************************************************************
+ * arch/avr/src/atmega/atmega_memorymap.h
+ *
+ * Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ * Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ * used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************************/
+
+#ifndef __ARCH_AVR_SRC_ATMEGA_ATMEGA_MEMORYMAP_H
+#define __ARCH_AVR_SRC_ATMEGA_ATMEGA_MEMORYMAP_H
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+
+/************************************************************************************
+ * Pre-processor Definitions
+ ************************************************************************************/
+
+/* Physical memory map */
+# warning "Missing Definitions"
+
+/* Peripheral Address Map */
+# warning "Missing Definitions"
+
+/************************************************************************************
+ * Public Types
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Data
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+#endif /* __ARCH_AVR_SRC_ATMEGA_ATMEGA_MEMORYMAP_H */
+
diff --git a/nuttx/arch/avr/src/atmega/chip.h b/nuttx/arch/avr/src/atmega/chip.h
new file mode 100644
index 000000000..7f114a604
--- /dev/null
+++ b/nuttx/arch/avr/src/atmega/chip.h
@@ -0,0 +1,75 @@
+/************************************************************************************
+ * arch/avr/src/atmega/chip.h
+ *
+ * Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ * Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ * used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************************/
+
+#ifndef __ARCH_AVR_SRC_ATMEGA_CHIP_H
+#define __ARCH_AVR_SRC_ATMEGA_CHIP_H
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+
+/************************************************************************************
+ * Pre-processor Definitions
+ ************************************************************************************/
+
+/* Define features for supported chip in the ATMEGA family */
+
+#if 0
+#else
+# error "Unsupported AVR chip"
+#endif
+
+/* Include only the memory map. Other chip hardware files should then include this
+ * file for the proper setup
+ */
+
+#include "atmega_memorymap.h"
+
+/************************************************************************************
+ * Public Types
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Data
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+#endif /* __ARCH_AVR_SRC_ATMEGA_CHIP_H */
+
diff --git a/nuttx/arch/avr/src/avr/README.txt b/nuttx/arch/avr/src/avr/README.txt
new file mode 100644
index 000000000..022b4813a
--- /dev/null
+++ b/nuttx/arch/avr/src/avr/README.txt
@@ -0,0 +1,2 @@
+This directory is a placeholder for commong AVR logic
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-06 22:54:49 +0000