AVR Atmega specific code. More...

Detailed Description

AVR Atmega specific code.

Pin Change Interrupts

Pin Change Interrupts (PCINTs) can be enabled using pseudo modules. To provide a low-memory overhead implementation, the PCINTs are grouped into banks. Each banks corresponds to one PCINT on the ATmega (PCINT0, ..., PCINT3).

To enable only a specific bank, simply add USEMODULE += atmega_pcintN to your Makefile. To enable all interrupts you can use USEMODULE += atmega_pcint.

In case you want to add a new CPU, simply provide an atmega_pcint.h with your CPU and adapt your Makefile.dep and Makefile.features files.

This is header file provides strings.h that is missing in AVR libc for compatibility.

Files
file	cpu_conf.h
	Implementation specific CPU configuration options.

file	atmega_gpio.h
	Macros and inline functions for accessing GPIOs of the ATmega family.

file	atmega_regs_common.h
	CMSIS style register definitions for the atmega family.

file	cpu_clock.h
	Common clock support for ATmega family based micro-controllers.

file	cpu_conf.h
	Implementation specific CPU configuration options.

file	gpio_ll_arch.h
	CPU specific part of the Peripheral GPIO Low-Level API.

file	periph_cpu_common.h
	CPU specific definitions for internal peripheral handling.

file	errno.h

file	inttypes.h
	Adds include for missing inttype definitions.

file	strings.h
	strings.h

Macros
#define	PRIo64 "llo"
	Format string for octal 64-bit number.

#define	PRIx64 "llx"
	Format string for hexadecimal 64-bit number.

#define	PRIu64 "llu"
	Format string for unsigned 64-bit number.

#define	PRId64 "lld"
	Format string for signed 64-bit number.

Functions
static void	bzero (void *dest, size_t n_bytes)
	Same as `memset(dest, 0, n_bytes)`, use `memset()` instead.

static int	bcmp (const void s1, const void s2, size_t n)
	Same as `memcmp()`, use `memcmp` instead.

static void	bcopy (const void src, void dest, size_t n)
	Same as `memmove()`, use `memmove()` or `memcpy()` instead.

Variables
int	errno
	number of last error

Error numbers
#define	E2BIG (1)
	Argument list too long.

#define	EACCES (2)
	Permission denied.

#define	EADDRINUSE (3)
	Address in use.

#define	EADDRNOTAVAIL (4)
	Address not available.

#define	EAFNOSUPPORT (5)
	Address family not supported.

#define	EAGAIN (6)
	Resource unavailable, try again (may be the same value as [EWOULDBLOCK]).

#define	EALREADY (7)
	Connection already in progress.

#define	EBADF (8)
	Bad file descriptor.

#define	EBADMSG (9)
	Bad message.

#define	EBUSY (10)
	Device or resource busy.

#define	ECANCELED (11)
	Operation canceled.

#define	ECHILD (12)
	No child processes.

#define	ECONNABORTED (13)
	Connection aborted.

#define	ECONNREFUSED (14)
	Connection refused.

#define	ECONNRESET (15)
	Connection reset.

#define	EDEADLK (16)
	Resource deadlock would occur.

#define	EDESTADDRREQ (17)
	Destination address required.

#define	EMFILE (18)
	File descriptor value too large.

#define	EDQUOT (19)
	Reserved.

#define	EEXIST (20)
	File exists.

#define	EFAULT (21)
	Bad address.

#define	EFBIG (22)
	File too large.

#define	EHOSTUNREACH (23)
	Host is unreachable.

#define	EIDRM (24)
	Identifier removed.

#define	EILSEQ (25)
	Illegal byte sequence.

#define	EINPROGRESS (26)
	Operation in progress.

#define	EINTR (27)
	Interrupted function.

#define	EINVAL (28)
	Invalid argument.

#define	EIO (29)
	I/O error.

#define	EISCONN (30)
	Socket is connected.

#define	EISDIR (31)
	Is a directory.

#define	ELOOP (32)
	Too many levels of symbolic links.

#define	EDOM (33)
	Mathematics argument out of domain of function.

#define	ERANGE (34)
	Result too large.

#define	EMSGSIZE (35)
	Message too large.

#define	EMULTIHOP (36)
	Reserved.

#define	ENAMETOOLONG (37)
	Filename too long.

#define	ENETDOWN (38)
	Network is down.

#define	ENETRESET (39)
	Connection aborted by network.

#define	ENETUNREACH (40)
	Network unreachable.

#define	ENFILE (41)
	Too many files open in system.

#define	ENOBUFS (42)
	No buffer space available.

#define	ENODATA (43)
	[OB XSR] [Option Start] No message is available on the STREAM head read queue.

#define	ENODEV (44)
	No such device.

#define	ENOENT (45)
	No such file or directory.

#define	ENOEXEC (46)
	Executable file format error.

#define	ENOLCK (47)
	No locks available.

#define	ENOLINK (48)
	Reserved.

#define	ENOMEM (49)
	Not enough space.

#define	ENOMSG (50)
	No message of the desired type.

#define	ENOPROTOOPT (51)
	Protocol not available.

#define	ENOSPC (52)
	No space left on device.

#define	ENOSR (53)
	[OB XSR] [Option Start] No STREAM resources.

#define	ENOSTR (54)
	[OB XSR] [Option Start] Not a STREAM.

#define	ENOSYS (55)
	Function not supported.

#define	ENOTCONN (56)
	The socket is not connected.

#define	ENOTDIR (57)
	Not a directory or a symbolic link to a directory.

#define	ENOTEMPTY (58)
	Directory not empty.

#define	ENOTRECOVERABLE (59)
	State not recoverable.

#define	ENOTSOCK (60)
	Not a socket.

#define	ENOTSUP (61)
	Not supported (may be the same value as [EOPNOTSUPP]).

#define	ENOTTY (62)
	Inappropriate I/O control operation.

#define	ENXIO (63)
	No such device or address.

#define	EOPNOTSUPP (64)
	Operation not supported on socket (may be the same value as [ENOTSUP]).

#define	EOVERFLOW (65)
	Value too large to be stored in data type.

#define	EOWNERDEAD (66)
	Previous owner died.

#define	EPERM (67)
	Operation not permitted.

#define	EPIPE (68)
	Broken pipe.

#define	EPROTO (69)
	Protocol error.

#define	EPROTONOSUPPORT (70)
	Protocol not supported.

#define	EPROTOTYPE (71)
	Protocol wrong type for socket.

#define	EMLINK (72)
	Too many links.

#define	EROFS (73)
	Read-only file system.

#define	ESPIPE (74)
	Invalid seek.

#define	ESRCH (75)
	No such process.

#define	ESTALE (76)
	Reserved.

#define	ETIME (77)
	[OB XSR] [Option Start] Stream ioctl() timeout.

#define	ETIMEDOUT (78)
	Connection timed out.

#define	ETXTBSY (79)
	Text file busy.

#define	EWOULDBLOCK (80)
	Operation would block (may be the same value as [EAGAIN]).

#define	EXDEV (81)
	Cross-device link.

#define	EHOSTDOWN (82)
	Host is down.

#define	EPFNOSUPPORT (83)
	Protocol family not supported.

#define	ETOOMANYREFS (84)
	Too many references: cannot splice.

Macro Definition Documentation

◆ E2BIG

#define E2BIG (1)

Argument list too long.

Definition at line 69 of file errno.h.

◆ EACCES

#define EACCES (2)

Permission denied.

Definition at line 70 of file errno.h.

◆ EADDRINUSE

#define EADDRINUSE (3)

Address in use.

Definition at line 71 of file errno.h.

◆ EADDRNOTAVAIL

#define EADDRNOTAVAIL (4)

Address not available.

Definition at line 72 of file errno.h.

◆ EAFNOSUPPORT

#define EAFNOSUPPORT (5)

Address family not supported.

Definition at line 73 of file errno.h.

◆ EAGAIN

#define EAGAIN (6)

Resource unavailable, try again (may be the same value as [EWOULDBLOCK]).

Definition at line 74 of file errno.h.

◆ EALREADY

#define EALREADY (7)

Connection already in progress.

Definition at line 75 of file errno.h.

◆ EBADF

#define EBADF (8)

Bad file descriptor.

Definition at line 76 of file errno.h.

◆ EBADMSG

#define EBADMSG (9)

Bad message.

Definition at line 77 of file errno.h.

◆ EBUSY

#define EBUSY (10)

Device or resource busy.

Definition at line 78 of file errno.h.

◆ ECANCELED

#define ECANCELED (11)

Operation canceled.

Definition at line 79 of file errno.h.

◆ ECHILD

#define ECHILD (12)

No child processes.

Definition at line 80 of file errno.h.

◆ ECONNABORTED

#define ECONNABORTED (13)

Connection aborted.

Definition at line 81 of file errno.h.

◆ ECONNREFUSED

#define ECONNREFUSED (14)

Connection refused.

Definition at line 82 of file errno.h.

◆ ECONNRESET

#define ECONNRESET (15)

Connection reset.

Definition at line 83 of file errno.h.

◆ EDEADLK

#define EDEADLK (16)

Resource deadlock would occur.

Definition at line 84 of file errno.h.

◆ EDESTADDRREQ

#define EDESTADDRREQ (17)

Destination address required.

Definition at line 85 of file errno.h.

◆ EDOM

#define EDOM (33)

Mathematics argument out of domain of function.

Definition at line 101 of file errno.h.

◆ EDQUOT

#define EDQUOT (19)

Reserved.

Definition at line 87 of file errno.h.

◆ EEXIST

#define EEXIST (20)

File exists.

Definition at line 88 of file errno.h.

◆ EFAULT

#define EFAULT (21)

Bad address.

Definition at line 89 of file errno.h.

◆ EFBIG

#define EFBIG (22)

File too large.

Definition at line 90 of file errno.h.

◆ EHOSTDOWN

#define EHOSTDOWN (82)

Host is down.

Definition at line 150 of file errno.h.

◆ EHOSTUNREACH

#define EHOSTUNREACH (23)

Host is unreachable.

Definition at line 91 of file errno.h.

◆ EIDRM

#define EIDRM (24)

Identifier removed.

Definition at line 92 of file errno.h.

◆ EILSEQ

#define EILSEQ (25)

Illegal byte sequence.

Definition at line 93 of file errno.h.

◆ EINPROGRESS

#define EINPROGRESS (26)

Operation in progress.

Definition at line 94 of file errno.h.

◆ EINTR

#define EINTR (27)

Interrupted function.

Definition at line 95 of file errno.h.

◆ EINVAL

#define EINVAL (28)

Invalid argument.

Definition at line 96 of file errno.h.

◆ EIO

#define EIO (29)

I/O error.

Definition at line 97 of file errno.h.

◆ EISCONN

#define EISCONN (30)

Socket is connected.

Definition at line 98 of file errno.h.

◆ EISDIR

#define EISDIR (31)

Is a directory.

Definition at line 99 of file errno.h.

◆ ELOOP

#define ELOOP (32)

Too many levels of symbolic links.

Definition at line 100 of file errno.h.

◆ EMFILE

#define EMFILE (18)

File descriptor value too large.

Definition at line 86 of file errno.h.

◆ EMLINK

#define EMLINK (72)

Too many links.

Definition at line 140 of file errno.h.

◆ EMSGSIZE

#define EMSGSIZE (35)

Message too large.

Definition at line 103 of file errno.h.

◆ EMULTIHOP

#define EMULTIHOP (36)

Reserved.

Definition at line 104 of file errno.h.

◆ ENAMETOOLONG

#define ENAMETOOLONG (37)

Filename too long.

Definition at line 105 of file errno.h.

◆ ENETDOWN

#define ENETDOWN (38)

Network is down.

Definition at line 106 of file errno.h.

◆ ENETRESET

#define ENETRESET (39)

Connection aborted by network.

Definition at line 107 of file errno.h.

◆ ENETUNREACH

#define ENETUNREACH (40)

Network unreachable.

Definition at line 108 of file errno.h.

◆ ENFILE

#define ENFILE (41)

Too many files open in system.

Definition at line 109 of file errno.h.

◆ ENOBUFS

#define ENOBUFS (42)

No buffer space available.

Definition at line 110 of file errno.h.

◆ ENODATA

#define ENODATA (43)

[OB XSR] [Option Start] No message is available on the STREAM head read queue.

[Option End]

Definition at line 111 of file errno.h.

◆ ENODEV

#define ENODEV (44)

No such device.

Definition at line 112 of file errno.h.

◆ ENOENT

#define ENOENT (45)

No such file or directory.

Definition at line 113 of file errno.h.

◆ ENOEXEC

#define ENOEXEC (46)

Executable file format error.

Definition at line 114 of file errno.h.

◆ ENOLCK

#define ENOLCK (47)

No locks available.

Definition at line 115 of file errno.h.

◆ ENOLINK

#define ENOLINK (48)

Reserved.

Definition at line 116 of file errno.h.

◆ ENOMEM

#define ENOMEM (49)

Not enough space.

Definition at line 117 of file errno.h.

◆ ENOMSG

#define ENOMSG (50)

No message of the desired type.

Definition at line 118 of file errno.h.

◆ ENOPROTOOPT

#define ENOPROTOOPT (51)

Protocol not available.

Definition at line 119 of file errno.h.

◆ ENOSPC

#define ENOSPC (52)

No space left on device.

Definition at line 120 of file errno.h.

◆ ENOSR

#define ENOSR (53)

[OB XSR] [Option Start] No STREAM resources.

[Option End]

Definition at line 121 of file errno.h.

◆ ENOSTR

#define ENOSTR (54)

[OB XSR] [Option Start] Not a STREAM.

[Option End]

Definition at line 122 of file errno.h.

◆ ENOSYS

#define ENOSYS (55)

Function not supported.

Definition at line 123 of file errno.h.

◆ ENOTCONN

#define ENOTCONN (56)

The socket is not connected.

Definition at line 124 of file errno.h.

◆ ENOTDIR

#define ENOTDIR (57)

Not a directory or a symbolic link to a directory.

Definition at line 125 of file errno.h.

◆ ENOTEMPTY

#define ENOTEMPTY (58)

Directory not empty.

Definition at line 126 of file errno.h.

◆ ENOTRECOVERABLE

#define ENOTRECOVERABLE (59)

State not recoverable.

Definition at line 127 of file errno.h.

◆ ENOTSOCK

#define ENOTSOCK (60)

Not a socket.

Definition at line 128 of file errno.h.

◆ ENOTSUP

#define ENOTSUP (61)

Not supported (may be the same value as [EOPNOTSUPP]).

Definition at line 129 of file errno.h.

◆ ENOTTY

#define ENOTTY (62)

Inappropriate I/O control operation.

Definition at line 130 of file errno.h.

◆ ENXIO

#define ENXIO (63)

No such device or address.

Definition at line 131 of file errno.h.

◆ EOPNOTSUPP

#define EOPNOTSUPP (64)

Operation not supported on socket (may be the same value as [ENOTSUP]).

Definition at line 132 of file errno.h.

◆ EOVERFLOW

#define EOVERFLOW (65)

Value too large to be stored in data type.

Definition at line 133 of file errno.h.

◆ EOWNERDEAD

#define EOWNERDEAD (66)

Previous owner died.

Definition at line 134 of file errno.h.

◆ EPERM

#define EPERM (67)

Operation not permitted.

Definition at line 135 of file errno.h.

◆ EPFNOSUPPORT

#define EPFNOSUPPORT (83)

Protocol family not supported.

Definition at line 151 of file errno.h.

◆ EPIPE

#define EPIPE (68)

Broken pipe.

Definition at line 136 of file errno.h.

◆ EPROTO

#define EPROTO (69)

Protocol error.

Definition at line 137 of file errno.h.

◆ EPROTONOSUPPORT

#define EPROTONOSUPPORT (70)

Protocol not supported.

Definition at line 138 of file errno.h.

◆ EPROTOTYPE

#define EPROTOTYPE (71)

Protocol wrong type for socket.

Definition at line 139 of file errno.h.

◆ ERANGE

#define ERANGE (34)

Result too large.

Definition at line 102 of file errno.h.

◆ EROFS

#define EROFS (73)

Read-only file system.

Definition at line 141 of file errno.h.

◆ ESPIPE

#define ESPIPE (74)

Invalid seek.

Definition at line 142 of file errno.h.

◆ ESRCH

#define ESRCH (75)

No such process.

Definition at line 143 of file errno.h.

◆ ESTALE

#define ESTALE (76)

Reserved.

Definition at line 144 of file errno.h.

◆ ETIME

#define ETIME (77)

[OB XSR] [Option Start] Stream ioctl() timeout.

[Option End]

Definition at line 145 of file errno.h.

◆ ETIMEDOUT

#define ETIMEDOUT (78)

Connection timed out.

Definition at line 146 of file errno.h.

◆ ETOOMANYREFS

#define ETOOMANYREFS (84)

Too many references: cannot splice.

Definition at line 152 of file errno.h.

◆ ETXTBSY

#define ETXTBSY (79)

Text file busy.

Definition at line 147 of file errno.h.

◆ EWOULDBLOCK

#define EWOULDBLOCK (80)

Operation would block (may be the same value as [EAGAIN]).

Definition at line 148 of file errno.h.

◆ EXDEV

#define EXDEV (81)

Cross-device link.

Definition at line 149 of file errno.h.

◆ PRId64

#define PRId64 "lld"

Format string for signed 64-bit number.

Definition at line 27 of file inttypes.h.

◆ PRIo64

#define PRIo64 "llo"

Format string for octal 64-bit number.

Definition at line 24 of file inttypes.h.

◆ PRIu64

#define PRIu64 "llu"

Format string for unsigned 64-bit number.

Definition at line 26 of file inttypes.h.

◆ PRIx64

#define PRIx64 "llx"

Format string for hexadecimal 64-bit number.

Definition at line 25 of file inttypes.h.

Function Documentation

◆ bcmp()

static int bcmp	(	const void *	s1,
		const void *	s2,
		size_t	n )

inlinestatic

Same as memcmp(), use memcmp instead.

Parameters

[in]	s1	first memory chunk to compare
[in]	s2	second memory chunk to compare
[in]	n	number of bytes to compare

Return values

`0`	The first `n` bytes of `s1` and `s2` are equal
`!=0`	The first `n` bytes of `s1` and `s2` differ in at least one bit

Definition at line 50 of file strings.h.

◆ bcopy()

static void bcopy	(	const void *	src,
		void *	dest,
		size_t	n )

inlinestatic

Same as memmove(), use memmove() or memcpy() instead.

Parameters

[in]	src	memory to copy from
[out]	dest	memory to copy to
[in]	n	number of bytes to copy

src and dest may overlap

Note: It is preferred to use the standardize function memcpy() for non-overlapping memory regions and memmove() for overlapping memory regions instead of this obsolete function.

Definition at line 68 of file strings.h.

◆ bzero()

static void bzero	(	void *	dest,
		size_t	n_bytes )

inlinestatic

Same as memset(dest, 0, n_bytes), use memset() instead.

Parameters

[in,out]	dest	Memory to clear
[in]	n_bytes	Size of memory to clear in bytes

Definition at line 34 of file strings.h.

Detailed Description

Pin Change Interrupts

Files

Macros

Functions

Variables

Error numbers

Macro Definition Documentation

◆ E2BIG

◆ EACCES

◆ EADDRINUSE

◆ EADDRNOTAVAIL

◆ EAFNOSUPPORT

◆ EAGAIN

◆ EALREADY

◆ EBADF

◆ EBADMSG

◆ EBUSY

◆ ECANCELED

◆ ECHILD

◆ ECONNABORTED

◆ ECONNREFUSED

◆ ECONNRESET

◆ EDEADLK

◆ EDESTADDRREQ

◆ EDOM

◆ EDQUOT

◆ EEXIST

◆ EFAULT

◆ EFBIG

◆ EHOSTDOWN

◆ EHOSTUNREACH

◆ EIDRM

◆ EILSEQ

◆ EINPROGRESS

◆ EINTR

◆ EINVAL

◆ EIO

◆ EISCONN

◆ EISDIR

◆ ELOOP

◆ EMFILE

◆ EMLINK

◆ EMSGSIZE

◆ EMULTIHOP

◆ ENAMETOOLONG

◆ ENETDOWN

◆ ENETRESET

◆ ENETUNREACH

◆ ENFILE

◆ ENOBUFS

◆ ENODATA

◆ ENODEV

◆ ENOENT

◆ ENOEXEC

◆ ENOLCK

◆ ENOLINK

◆ ENOMEM

◆ ENOMSG

◆ ENOPROTOOPT

◆ ENOSPC

◆ ENOSR

◆ ENOSTR

◆ ENOSYS

◆ ENOTCONN

◆ ENOTDIR

◆ ENOTEMPTY

◆ ENOTRECOVERABLE

◆ ENOTSOCK

◆ ENOTSUP

◆ ENOTTY

◆ ENXIO

◆ EOPNOTSUPP

◆ EOVERFLOW

◆ EOWNERDEAD

◆ EPERM

◆ EPFNOSUPPORT

◆ EPIPE

◆ EPROTO

◆ EPROTONOSUPPORT