TuyaOS
宏定义 | 类型定义 | 函数
sys.h 文件参考
#include "lwip/opt.h"
#include "lwip/err.h"
#include "arch/sys_arch.h"
sys.h 的引用(Include)关系图:
此图展示该文件直接或间接的被哪些文件引用了:

浏览源代码.

宏定义

#define LWIP_COMPAT_MUTEX   0
 
#define SYS_ARCH_DEC(var, val)
 
#define SYS_ARCH_DECL_PROTECT(lev)
 
#define SYS_ARCH_GET(var, ret)
 
#define SYS_ARCH_INC(var, val)
 
#define SYS_ARCH_LOCKED(code)
 
#define SYS_ARCH_PROTECT(lev)
 
#define SYS_ARCH_SET(var, val)
 
#define SYS_ARCH_TIMEOUT   0xffffffffUL
 
#define SYS_ARCH_UNPROTECT(lev)
 
#define SYS_MBOX_EMPTY   SYS_ARCH_TIMEOUT
 
#define sys_mbox_fetch(mbox, msg)   sys_arch_mbox_fetch(mbox, msg, 0)
 
#define sys_mbox_set_invalid_val(mbox)   sys_mbox_set_invalid(&(mbox))
 
#define sys_mbox_tryfetch(mbox, msg)   sys_arch_mbox_tryfetch(mbox, msg)
 
#define sys_mbox_valid_val(mbox)   sys_mbox_valid(&(mbox))
 
#define sys_sem_set_invalid_val(sem)   sys_sem_set_invalid(&(sem))
 
#define sys_sem_valid_val(sem)   sys_sem_valid(&(sem))
 
#define sys_sem_wait(sem)   sys_arch_sem_wait(sem, 0)
 
#define TUYA_APP_TCPIP_THREAD_PRIO_BACK(prio)
 
#define TUYA_APP_TCPIP_THREAD_PRIO_UP(prio)
 

类型定义

typedef void(* lwip_thread_fn) (void *arg)
 

函数

u32_t sys_arch_mbox_fetch (sys_mbox_t *mbox, void **msg, u32_t timeout)
 
u32_t sys_arch_mbox_tryfetch (sys_mbox_t *mbox, void **msg)
 
u32_t sys_arch_sem_wait (sys_sem_t *sem, u32_t timeout)
 
void sys_init (void)
 
u32_t sys_jiffies (void)
 
void sys_mbox_free (sys_mbox_t *mbox)
 
err_t sys_mbox_new (sys_mbox_t *mbox, int size)
 
void sys_mbox_post (sys_mbox_t *mbox, void *msg)
 
void sys_mbox_set_invalid (sys_mbox_t *mbox)
 
err_t sys_mbox_trypost (sys_mbox_t *mbox, void *msg)
 
err_t sys_mbox_trypost_fromisr (sys_mbox_t *mbox, void *msg)
 
int sys_mbox_valid (sys_mbox_t *mbox)
 
void sys_msleep (u32_t ms)
 
void sys_mutex_free (sys_mutex_t *mutex)
 
void sys_mutex_lock (sys_mutex_t *mutex)
 
err_t sys_mutex_new (sys_mutex_t *mutex)
 
void sys_mutex_set_invalid (sys_mutex_t *mutex)
 
void sys_mutex_unlock (sys_mutex_t *mutex)
 
int sys_mutex_valid (sys_mutex_t *mutex)
 
u32_t sys_now (void)
 
void sys_sem_free (sys_sem_t *sem)
 
err_t sys_sem_new (sys_sem_t *sem, u8_t count)
 
void sys_sem_set_invalid (sys_sem_t *sem)
 
void sys_sem_signal (sys_sem_t *sem)
 
int sys_sem_valid (sys_sem_t *sem)
 
sys_thread_t sys_thread_new (const char *name, lwip_thread_fn thread, void *arg, int stacksize, int prio)
 

详细描述

OS abstraction layer

宏定义说明

◆ LWIP_COMPAT_MUTEX

#define LWIP_COMPAT_MUTEX   0

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

◆ SYS_ARCH_DEC

#define SYS_ARCH_DEC (   var,
  val 
)
值:
do { \
SYS_ARCH_DECL_PROTECT(old_level); \
SYS_ARCH_PROTECT(old_level); \
var -= val; \
SYS_ARCH_UNPROTECT(old_level); \
} while(0)

◆ SYS_ARCH_DECL_PROTECT

#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.

◆ SYS_ARCH_GET

#define SYS_ARCH_GET (   var,
  ret 
)
值:
do { \
SYS_ARCH_DECL_PROTECT(old_level); \
SYS_ARCH_PROTECT(old_level); \
ret = var; \
SYS_ARCH_UNPROTECT(old_level); \
} while(0)

◆ SYS_ARCH_INC

#define SYS_ARCH_INC (   var,
  val 
)
值:
do { \
SYS_ARCH_DECL_PROTECT(old_level); \
SYS_ARCH_PROTECT(old_level); \
var += val; \
SYS_ARCH_UNPROTECT(old_level); \
} while(0)

◆ SYS_ARCH_LOCKED

#define SYS_ARCH_LOCKED (   code)
值:
do { \
SYS_ARCH_DECL_PROTECT(old_level); \
SYS_ARCH_PROTECT(old_level); \
code; \
SYS_ARCH_UNPROTECT(old_level); \
} while(0)

◆ SYS_ARCH_SET

#define SYS_ARCH_SET (   var,
  val 
)
值:
do { \
SYS_ARCH_DECL_PROTECT(old_level); \
SYS_ARCH_PROTECT(old_level); \
var = val; \
SYS_ARCH_UNPROTECT(old_level); \
} while(0)

◆ SYS_ARCH_TIMEOUT

#define SYS_ARCH_TIMEOUT   0xffffffffUL

Return code for timeouts from sys_arch_mbox_fetch and sys_arch_sem_wait

◆ SYS_MBOX_EMPTY

#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.

◆ sys_mbox_set_invalid_val

#define sys_mbox_set_invalid_val (   mbox)    sys_mbox_set_invalid(&(mbox))

Same as sys_mbox_set_invalid() but taking a value, not a pointer

◆ sys_mbox_tryfetch

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

For now, we map straight to sys_arch implementation.

◆ sys_mbox_valid_val

#define sys_mbox_valid_val (   mbox)    sys_mbox_valid(&(mbox))

Same as sys_mbox_valid() but taking a value, not a pointer

◆ sys_sem_set_invalid_val

#define sys_sem_set_invalid_val (   sem)    sys_sem_set_invalid(&(sem))

Same as sys_sem_set_invalid() but taking a value, not a pointer

◆ sys_sem_valid_val

#define sys_sem_valid_val (   sem)    sys_sem_valid(&(sem))

Same as sys_sem_valid() but taking a value, not a pointer

◆ sys_sem_wait

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

Wait for a semaphore - forever/no timeout

类型定义说明

◆ lwip_thread_fn

typedef void(* lwip_thread_fn) (void *arg)

Function prototype for thread functions

函数说明

◆ sys_arch_mbox_fetch()

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

Blocks the thread until a message arrives in the mailbox, but does not block the thread longer than "timeout" milliseconds (similar to the sys_arch_sem_wait() function). If "timeout" is 0, the thread should be blocked until a message arrives. The "msg" argument is a result parameter that is set by the function (i.e., by doing "*msg = ptr"). The "msg" parameter maybe NULL to indicate that the message should be dropped. The return values are the same as for the sys_arch_sem_wait() function: SYS_ARCH_TIMEOUT if there was a timeout, any other value if a messages is received.

Note that a function with a similar name, sys_mbox_fetch(), is implemented by lwIP.

参数
mboxmbox to get a message from
msgpointer where the message is stored
timeoutmaximum time (in milliseconds) to wait for a message (0 = wait forever)
返回
SYS_ARCH_TIMEOUT on timeout, any other value if a message has been received

◆ sys_arch_mbox_tryfetch()

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

This is similar to sys_arch_mbox_fetch, however if a message is not present in the mailbox, it immediately returns with the code SYS_MBOX_EMPTY. On success 0 is returned. To allow for efficient implementations, this can be defined as a function-like macro in sys_arch.h instead of a normal function. For example, a naive implementation could be: #define sys_arch_mbox_tryfetch(mbox,msg) sys_arch_mbox_fetch(mbox,msg,1) although this would introduce unnecessary delays.

参数
mboxmbox to get a message from
msgpointer where the message is stored
返回
0 (milliseconds) if a message has been received or SYS_MBOX_EMPTY if the mailbox is empty

◆ sys_arch_sem_wait()

u32_t sys_arch_sem_wait ( sys_sem_t *  sem,
u32_t  timeout 
)

Blocks the thread while waiting for the semaphore to be signaled. If the "timeout" argument is non-zero, the thread should only be blocked for the specified time (measured in milliseconds). If the "timeout" argument is zero, the thread should be blocked until the semaphore is signalled.

The return value is SYS_ARCH_TIMEOUT if the semaphore wasn't signaled within the specified time or any other value if it was signaled (with or without waiting). Notice that lwIP implements a function with a similar name, sys_sem_wait(), that uses the sys_arch_sem_wait() function.

参数
semthe semaphore to wait for
timeouttimeout in milliseconds to wait (0 = wait forever)
返回
SYS_ARCH_TIMEOUT on timeout, any other value on success

◆ sys_init()

void sys_init ( void  )

sys_init() must be called before anything else. Initialize the sys_arch layer.

◆ sys_jiffies()

u32_t sys_jiffies ( void  )

Ticks/jiffies since power up.

◆ sys_mbox_free()

void sys_mbox_free ( sys_mbox_t *  mbox)

Deallocates a mailbox. If there are messages still present in the mailbox when the mailbox is deallocated, it is an indication of a programming error in lwIP and the developer should be notified.

参数
mboxmbox to delete

◆ sys_mbox_new()

err_t sys_mbox_new ( sys_mbox_t *  mbox,
int  size 
)

Creates an empty mailbox for maximum "size" elements. Elements stored in mailboxes are pointers. You have to define macros "_MBOX_SIZE" in your lwipopts.h, or ignore this parameter in your implementation and use a default size. If the mailbox has been created, ERR_OK should be returned. Returning any other error will provide a hint what went wrong, but except for assertions, no real error handling is implemented.

参数
mboxpointer to the mbox to create
size(minimum) number of messages in this mbox
返回
ERR_OK if successful, another err_t otherwise

◆ sys_mbox_post()

void sys_mbox_post ( sys_mbox_t *  mbox,
void *  msg 
)

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

参数
mboxmbox to posts the message
msgmessage to post (ATTENTION: can be NULL)

◆ sys_mbox_set_invalid()

void sys_mbox_set_invalid ( sys_mbox_t *  mbox)

Invalidate a mailbox so that sys_mbox_valid() returns 0. ATTENTION: This does NOT mean that the mailbox shall be deallocated: sys_mbox_free() is always called before calling this function! This may also be a define, in which case the function is not prototyped.

◆ sys_mbox_trypost()

err_t sys_mbox_trypost ( sys_mbox_t *  mbox,
void *  msg 
)

Try to post a message to an mbox - may fail if full. Can be used from ISR (if the sys arch layer allows this). Returns ERR_MEM if it is full, else, ERR_OK if the "msg" is posted.

参数
mboxmbox to posts the message
msgmessage to post (ATTENTION: can be NULL)

◆ sys_mbox_trypost_fromisr()

err_t sys_mbox_trypost_fromisr ( sys_mbox_t *  mbox,
void *  msg 
)

Try to post a message to an mbox - may fail if full. To be be used from ISR. Returns ERR_MEM if it is full, else, ERR_OK if the "msg" is posted.

参数
mboxmbox to posts the message
msgmessage to post (ATTENTION: can be NULL)

◆ sys_mbox_valid()

int sys_mbox_valid ( sys_mbox_t *  mbox)

Returns 1 if the mailbox is valid, 0 if it is not valid. When using pointers, a simple way is to check the pointer for != NULL. When directly using OS structures, implementing this may be more complex. This may also be a define, in which case the function is not prototyped.

◆ sys_msleep()

void sys_msleep ( u32_t  ms)

Sleep for specified number of ms

◆ sys_mutex_free()

void sys_mutex_free ( sys_mutex_t *  mutex)

Deallocates a mutex.

参数
mutexthe mutex to delete

◆ sys_mutex_lock()

void sys_mutex_lock ( sys_mutex_t *  mutex)

Blocks the thread until the mutex can be grabbed.

参数
mutexthe mutex to lock

◆ sys_mutex_new()

err_t sys_mutex_new ( sys_mutex_t *  mutex)

Create a new mutex. Note that mutexes are expected to not be taken recursively by the lwIP code, so both implementation types (recursive or non-recursive) should work. The mutex is allocated to the memory that 'mutex' points to (which can be both a pointer or the actual OS structure). If the mutex has been created, ERR_OK should be returned. Returning any other error will provide a hint what went wrong, but except for assertions, no real error handling is implemented.

参数
mutexpointer to the mutex to create
返回
ERR_OK if successful, another err_t otherwise

◆ sys_mutex_set_invalid()

void sys_mutex_set_invalid ( sys_mutex_t *  mutex)

Invalidate a mutex so that sys_mutex_valid() returns 0. ATTENTION: This does NOT mean that the mutex shall be deallocated: sys_mutex_free() is always called before calling this function! This may also be a define, in which case the function is not prototyped.

◆ sys_mutex_unlock()

void sys_mutex_unlock ( sys_mutex_t *  mutex)

Releases the mutex previously locked through 'sys_mutex_lock()'.

参数
mutexthe mutex to unlock

◆ sys_mutex_valid()

int sys_mutex_valid ( sys_mutex_t *  mutex)

Returns 1 if the mutes is valid, 0 if it is not valid. When using pointers, a simple way is to check the pointer for != NULL. When directly using OS structures, implementing this may be more complex. This may also be a define, in which case the function is not prototyped.

◆ sys_now()

u32_t sys_now ( void  )

Returns the current time in milliseconds, may be the same as sys_jiffies or at least based on it. Don't care for wraparound, this is only used for time diffs. Not implementing this function means you cannot use some modules (e.g. TCP timestamps, internal timeouts for NO_SYS==1).

◆ sys_sem_free()

void sys_sem_free ( sys_sem_t *  sem)

Deallocates a semaphore.

参数
semsemaphore to delete

◆ sys_sem_new()

err_t sys_sem_new ( sys_sem_t *  sem,
u8_t  count 
)

Create a new semaphore Creates a new semaphore. The semaphore is allocated to the memory that 'sem' points to (which can be both a pointer or the actual OS structure). The "count" argument specifies the initial state of the semaphore (which is either 0 or 1). If the semaphore has been created, ERR_OK should be returned. Returning any other error will provide a hint what went wrong, but except for assertions, no real error handling is implemented.

参数
sempointer to the semaphore to create
countinitial count of the semaphore
返回
ERR_OK if successful, another err_t otherwise

◆ sys_sem_set_invalid()

void sys_sem_set_invalid ( sys_sem_t *  sem)

Invalidate a semaphore so that sys_sem_valid() returns 0. ATTENTION: This does NOT mean that the semaphore shall be deallocated: sys_sem_free() is always called before calling this function! This may also be a define, in which case the function is not prototyped.

◆ sys_sem_signal()

void sys_sem_signal ( sys_sem_t *  sem)

Signals a semaphore

参数
semthe semaphore to signal

◆ sys_sem_valid()

int sys_sem_valid ( sys_sem_t *  sem)

Returns 1 if the semaphore is valid, 0 if it is not valid. When using pointers, a simple way is to check the pointer for != NULL. When directly using OS structures, implementing this may be more complex. This may also be a define, in which case the function is not prototyped.

◆ sys_thread_new()

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

The only thread function: Starts a new thread named "name" with priority "prio" that will begin its execution in the function "thread()". The "arg" argument will be passed as an argument to the thread() function. The stack size to used for this thread is the "stacksize" parameter. The id of the new thread is returned. Both the id and the priority are system dependent. ATTENTION: although this function returns a value, it MUST NOT FAIL (ports have to assert this!)

参数
namehuman-readable name for the thread (used for debugging purposes)
threadthread-function
argparameter passed to 'thread'
stacksizestack size in bytes for the new thread (may be ignored by ports)
priopriority of the new thread (may be ignored by ports)