/*********************************************************************
*
* IP_OS_WaitItemTimed()
*
* Function description
* Suspend a task which needs to wait for a object.
* This object is identified by a pointer to it and can be of any type, e.g. socket.
*
* Context
* Function is called from an application task.
*/
void IP_OS_WaitItemTimed(void * pWaitItem, unsigned Timeout) {
TCP_WAIT TCPWait;
//
// Create the wait object which contains the OS-Event object
//
TCPWait.pPrev = NULL;
TCPWait.pWaitItem = pWaitItem;
OS_EVENT_Create(&TCPWait.Event);
//
// Add to doubly-linked list with temp. disabled interrupts
//
IP_OS_DisableInterrupt();
TCPWait.pNext = _pTCPWait;
_pTCPWait = &TCPWait;
if (TCPWait.pNext) {
TCPWait.pNext->pPrev = &TCPWait;
}
IP_OS_EnableInterrupt();
//
// Unlock mutex and suspend this task
//
IP_OS_Unlock();
if (Timeout == 0) {
OS_EVENT_Wait(&TCPWait.Event);
} else {
OS_EVENT_WaitTimed(&TCPWait.Event, Timeout);
}
//
// Remove it from doubly linked list with temp. disabled interrupts
//
IP_OS_DisableInterrupt();
if (TCPWait.pPrev) {
TCPWait.pPrev->pNext = TCPWait.pNext;
} else {
_pTCPWait = TCPWait.pNext;
}
if (TCPWait.pNext) {
TCPWait.pNext->pPrev = TCPWait.pPrev;
}
IP_OS_EnableInterrupt();
//
// Delete the event object & lock the mutex again
//
OS_EVENT_Delete(&TCPWait.Event);
IP_OS_Lock();
}
/*********************************************************************
*
* IP_Log
*
* Function description
* This function is called by the stack in debug builds with log output.
* In a release build, this function may not be linked in.
*
* Notes
* (1) Interrupts and task switches
* printf() has a reentrance problem on alot of systems if interrupts are not disabled.
* which would scramble strings if printf() called from an ISR interrupts an other printf.
* In order to avoid this problem, interrupts are disabled.
*
*/
void IP_Log(const char * s) {
IP_OS_DisableInterrupt();
_ShowStamp();
_puts(s);
_puts("\n");
IP_OS_EnableInterrupt();
}
/*********************************************************************
*
* IP_Warn
*
* Function description
* This function is called by the stack in debug builds with log output.
* In a release build, this function may not be linked in.
*
* Notes
* (1) Interrupts and task switches
* See IP_Log()
*/
void IP_Warn(const char * s) {
IP_OS_DisableInterrupt();
_ShowStamp();
_puts("*** Warning *** ");
_puts(s);
_puts("\n");
IP_OS_EnableInterrupt();
}
/*********************************************************************
*
* IP_Panic
*
* Function description
* This function is called if the stack encounters a critical situation.
* In a release build, this function may not be linked in.
*
*/
void IP_Panic(const char * s) {
(void)s;
IP_OS_DisableInterrupt();
#if IP_DEBUG > 1
_puts("*** Fatal error, System halted: ");
_puts(s);
_puts("\n");
#endif
while (1);
}
