#include "lwip/opt.h"
#include "lwip/err.h"
#include "arch/sys_arch.h"

Macros
#define	SYS_ARCH_DEC(var, val)

#define	SYS_ARCH_DECL_PROTECT(lev)
	SYS_LIGHTWEIGHT_PROT define SYS_LIGHTWEIGHT_PROT in lwipopts.h if you want inter-task protection for certain critical regions during buffer allocation, deallocation and memory allocation and deallocation. More...

#define	SYS_ARCH_GET(var, ret)

#define	SYS_ARCH_INC(var, val)

#define	SYS_ARCH_PROTECT(lev)

#define	SYS_ARCH_SET(var, val)

#define	SYS_ARCH_TIMEOUT 0xffffffffUL
	Return code for timeouts from sys_arch_mbox_fetch and sys_arch_sem_wait. More...

#define	SYS_ARCH_UNPROTECT(lev)

#define	SYS_MBOX_EMPTY SYS_ARCH_TIMEOUT
	sys_mbox_tryfetch() returns SYS_MBOX_EMPTY if appropriate. More...

#define	sys_mbox_fetch(mbox, msg) sys_arch_mbox_fetch(mbox, msg, 0)

#define	sys_mbox_tryfetch(mbox, msg) sys_arch_mbox_tryfetch(mbox, msg)
	For now, we map straight to sys_arch implementation. More...

#define	sys_sem_wait(sem) sys_arch_sem_wait(sem, 0)
	Wait for a semaphore - forever/no timeout. More...

Typedefs
typedef void(*	lwip_thread_fn )(void *arg)
	Function prototype for thread functions. More...

Functions
u32_t	sys_arch_mbox_fetch (sys_mbox_t mbox, void *msg, u32_t timeout)
	Wait for a new message to arrive in the mbox. More...

u32_t	sys_arch_mbox_tryfetch (sys_mbox_t mbox, void *msg)
	Wait for a new message to arrive in the mbox. More...

u32_t	sys_arch_sem_wait (sys_sem_t *sem, u32_t timeout)
	Wait for a semaphore for the specified timeout. More...

void	sys_init (void)

u32_t	sys_jiffies (void)
	Ticks/jiffies since power up. More...

void	sys_mbox_free (sys_mbox_t *mbox)
	Delete an mbox. More...

err_t	sys_mbox_new (sys_mbox_t *mbox, int size)
	Create a new mbox of specified size. More...

void	sys_mbox_post (sys_mbox_t mbox, void msg)
	Post a message to an mbox - may not fail -> blocks if full, only used from tasks not from ISR. More...

void	sys_mbox_set_invalid (sys_mbox_t *mbox)
	Set an mbox invalid so that sys_mbox_valid returns 0. More...

err_t	sys_mbox_trypost (sys_mbox_t mbox, void msg)
	Try to post a message to an mbox - may fail if full or ISR. More...

int	sys_mbox_valid (sys_mbox_t *mbox)
	Check if an mbox is valid/allocated: return 1 for valid, 0 for invalid. More...

void	sys_msleep (u32_t ms)
	Sleep for some ms. More...

void	sys_mutex_free (sys_mutex_t *mutex)
	Delete a semaphore. More...

void	sys_mutex_lock (sys_mutex_t *mutex)
	Lock a mutex. More...

err_t	sys_mutex_new (sys_mutex_t *mutex)
	Define LWIP_COMPAT_MUTEX if the port has no mutexes and binary semaphores should be used instead. More...

void	sys_mutex_set_invalid (sys_mutex_t *mutex)
	Set a mutex invalid so that sys_mutex_valid returns 0. More...

void	sys_mutex_unlock (sys_mutex_t *mutex)
	Unlock a mutex. More...

int	sys_mutex_valid (sys_mutex_t *mutex)
	Check if a mutex is valid/allocated: return 1 for valid, 0 for invalid. More...

u32_t	sys_now (void)
	Returns the current time in milliseconds, may be the same as sys_jiffies or at least based on it. More...

void	sys_sem_free (sys_sem_t *sem)
	Delete a semaphore. More...

err_t	sys_sem_new (sys_sem_t *sem, u8_t count)
	Create a new semaphore. More...

void	sys_sem_set_invalid (sys_sem_t *sem)
	Set a semaphore invalid so that sys_sem_valid returns 0. More...

void	sys_sem_signal (sys_sem_t *sem)
	Signals a semaphore. More...

int	sys_sem_valid (sys_sem_t *sem)
	Check if a sempahore is valid/allocated: return 1 for valid, 0 for invalid. More...

sys_thread_t	sys_thread_new (const char name, lwip_thread_fn thread, void arg, int stacksize, int prio)
	The only thread function: Creates a new thread. More...

#define SYS_ARCH_DEC	(	var,
		val
	)

Value:

do { \
                                SYS_ARCH_DECL_PROTECT(old_level); \
                                SYS_ARCH_PROTECT(old_level); \
                                var -= val; \
                                SYS_ARCH_UNPROTECT(old_level); \
                              } while(0)

#define SYS_ARCH_DECL_PROTECT ( lev )

SYS_LIGHTWEIGHT_PROT define SYS_LIGHTWEIGHT_PROT in lwipopts.h if you want inter-task protection for certain critical regions during buffer allocation, deallocation and memory allocation and deallocation.

#define SYS_ARCH_GET	(	var,
		ret
	)

Value:

do { \
                                SYS_ARCH_DECL_PROTECT(old_level); \
                                SYS_ARCH_PROTECT(old_level); \
                                ret = var; \
                                SYS_ARCH_UNPROTECT(old_level); \
                              } while(0)

#define SYS_ARCH_INC	(	var,
		val
	)

Value:

do { \
                                SYS_ARCH_DECL_PROTECT(old_level); \
                                SYS_ARCH_PROTECT(old_level); \
                                var += val; \
                                SYS_ARCH_UNPROTECT(old_level); \
                              } while(0)

#define SYS_ARCH_PROTECT ( lev )

#define SYS_ARCH_SET	(	var,
		val
	)

Value:

do { \
                                SYS_ARCH_DECL_PROTECT(old_level); \
                                SYS_ARCH_PROTECT(old_level); \
                                var = val; \
                                SYS_ARCH_UNPROTECT(old_level); \
                              } while(0)

#define SYS_ARCH_TIMEOUT 0xffffffffUL

Return code for timeouts from sys_arch_mbox_fetch and sys_arch_sem_wait.

#define SYS_ARCH_UNPROTECT ( lev )

#define SYS_MBOX_EMPTY SYS_ARCH_TIMEOUT

sys_mbox_tryfetch() returns SYS_MBOX_EMPTY if appropriate.

For now we use the same magic value, but we allow this to change in future.

#define sys_mbox_fetch	(	mbox,
		msg
	)	sys_arch_mbox_fetch(mbox, msg, 0)

#define sys_mbox_tryfetch	(	mbox,
		msg
	)	sys_arch_mbox_tryfetch(mbox, msg)

For now, we map straight to sys_arch implementation.

#define sys_sem_wait ( sem ) sys_arch_sem_wait(sem, 0)

Wait for a semaphore - forever/no timeout.

typedef void(* lwip_thread_fn)(void *arg)

Function prototype for thread functions.

u32_t sys_arch_mbox_fetch	(	sys_mbox_t *	mbox,
		void **	msg,
		u32_t	timeout
	)

Wait for a new message to arrive in the mbox.

Parameters

mbox	mbox to get a message from
msg	pointer where the message is stored
timeout	maximum time (in milliseconds) to wait for a message

Returns: time (in milliseconds) waited for a message, may be 0 if not waited or SYS_ARCH_TIMEOUT on timeout The returned time has to be accurate to prevent timer jitter!

u32_t sys_arch_mbox_tryfetch	(	sys_mbox_t *	mbox,
		void **	msg
	)

Wait for a new message to arrive in the mbox.

Parameters

mbox	mbox to get a message from
msg	pointer where the message is stored
timeout	maximum time (in milliseconds) to wait for a message

Returns: 0 (milliseconds) if a message has been received or SYS_MBOX_EMPTY if the mailbox is empty

u32_t sys_arch_sem_wait	(	sys_sem_t *	sem,
		u32_t	timeout
	)

Wait for a semaphore for the specified timeout.

Parameters

sem	the semaphore to wait for
timeout	timeout in milliseconds to wait (0 = wait forever)

Returns: time (in milliseconds) waited for the semaphore or SYS_ARCH_TIMEOUT on timeout

Referenced by ksz8851snl_task(), and sys_msleep().

void sys_init ( void )

Referenced by lwip_init().

u32_t sys_jiffies ( void )

Ticks/jiffies since power up.

void sys_mbox_free ( sys_mbox_t * mbox )

Delete an mbox.

Parameters

mbox	mbox to delete

err_t sys_mbox_new	(	sys_mbox_t *	mbox,
		int	size
	)

Create a new mbox of specified size.

Parameters

mbox	pointer to the mbox to create
size	(miminum) number of messages in this mbox

Returns: ERR_OK if successful, another err_t otherwise

Referenced by tcpip_init().

void sys_mbox_post	(	sys_mbox_t *	mbox,
		void *	msg
	)

Post a message to an mbox - may not fail -> blocks if full, only used from tasks not from ISR.

Parameters

mbox	mbox to posts the message
msg	message to post (ATTENTION: can be NULL)

Referenced by tcpip_callback_with_block().

void sys_mbox_set_invalid ( sys_mbox_t * mbox )

Set an mbox invalid so that sys_mbox_valid returns 0.

err_t sys_mbox_trypost	(	sys_mbox_t *	mbox,
		void *	msg
	)

Try to post a message to an mbox - may fail if full or ISR.

Parameters

mbox	mbox to posts the message
msg	message to post (ATTENTION: can be NULL)

Referenced by tcpip_callback_with_block(), tcpip_input(), and tcpip_trycallback().

int sys_mbox_valid ( sys_mbox_t * mbox )

Check if an mbox is valid/allocated: return 1 for valid, 0 for invalid.

Referenced by tcpip_callback_with_block(), tcpip_input(), and tcpip_trycallback().

void sys_msleep ( u32_t ms )

Sleep for some ms.

Timeouts are NOT processed while sleeping.

Parameters

ms	number of milliseconds to sleep

References ERR_OK, sys_arch_sem_wait(), sys_sem_free(), and sys_sem_new().

void sys_mutex_free ( sys_mutex_t * mutex )

Delete a semaphore.

Parameters

mutex the mutex to delete

void sys_mutex_lock ( sys_mutex_t * mutex )

Lock a mutex.

Parameters

mutex the mutex to lock

Referenced by mem_malloc().

err_t sys_mutex_new ( sys_mutex_t * mutex )

Define LWIP_COMPAT_MUTEX if the port has no mutexes and binary semaphores should be used instead.

Create a new mutex

Parameters

mutex pointer to the mutex to create

Returns: a new mutex

Referenced by mem_init(), and tcpip_init().

void sys_mutex_set_invalid ( sys_mutex_t * mutex )

Set a mutex invalid so that sys_mutex_valid returns 0.

void sys_mutex_unlock ( sys_mutex_t * mutex )

Unlock a mutex.

Parameters

mutex the mutex to unlock

Referenced by mem_malloc().

int sys_mutex_valid ( sys_mutex_t * mutex )

Check if a mutex is valid/allocated: return 1 for valid, 0 for invalid.

u32_t sys_now ( void )

Returns the current time in milliseconds, may be the same as sys_jiffies or at least based on it.

void sys_sem_free ( sys_sem_t * sem )

Delete a semaphore.

Parameters

sem	semaphore to delete

Referenced by sys_msleep().

err_t sys_sem_new	(	sys_sem_t *	sem,
		u8_t	count
	)

Create a new semaphore.

Parameters

sem	pointer to the semaphore to create
count	initial count of the semaphore

Returns: ERR_OK if successful, another err_t otherwise

Referenced by ethernetif_init(), and sys_msleep().

void sys_sem_set_invalid ( sys_sem_t * sem )

Set a semaphore invalid so that sys_sem_valid returns 0.

void sys_sem_signal ( sys_sem_t * sem )

Signals a semaphore.

Parameters

sem	the semaphore to signal

int sys_sem_valid ( sys_sem_t * sem )

Check if a sempahore is valid/allocated: return 1 for valid, 0 for invalid.

sys_thread_t sys_thread_new	(	const char *	name,
		lwip_thread_fn	thread,
		void *	arg,
		int	stacksize,
		int	prio
	)

The only thread function: Creates a new thread.

Parameters

name	human-readable name for the thread (used for debugging purposes)
thread	thread-function
arg	parameter passed to 'thread'
stacksize	stack size in bytes for the new thread (may be ignored by ports)
prio	priority of the new thread (may be ignored by ports)

Referenced by ethernetif_init(), and tcpip_init().

Microchip® Advanced Software Framework

Macros

Typedefs

Functions