CMSIS Example - Signal
/*----------------------------------------------------------------------------
* RL-ARM - RTX
*----------------------------------------------------------------------------
* Name: RTX_EX1.C
* Purpose: Your First RTX example program
*----------------------------------------------------------------------------
*
* Copyright (c) 1999-2009 KEIL, 2009-2012 ARM Germany GmbH
* All rights reserved.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - 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.
* - Neither the name of ARM 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 COPYRIGHT HOLDERS AND 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.
*---------------------------------------------------------------------------*/ #include "cmsis_os.h" /* Forward reference */
void threadX (void const *argument); /* Thread IDs */
osThreadId main_id;
osThreadId threadX_id; /* Thread definitions */
osThreadDef(threadX, osPriorityNormal, , ); /*----------------------------------------------------------------------------
* Thread X
*---------------------------------------------------------------------------*/
void threadX (void const *argument) {
for (;;) {
/* Wait for completion of do-this */
osSignalWait(0x0004, osWaitForever); /* do-that */
/* Pause for 20 ms until signaling event to main thread */
osDelay();
/* Indicate to main thread completion of do-that */
osSignalSet(main_id, 0x0004);
}
} /*----------------------------------------------------------------------------
* Main Thread
*---------------------------------------------------------------------------*/
int main (void) { /* Get main thread ID */
main_id = osThreadGetId();
/* Create thread X */
threadX_id = osThreadCreate(osThread(threadX), NULL);
for (;;) { /* do-this */
/* Indicate to thread X completion of do-this */
osSignalSet(threadX_id, 0x0004);
/* Wait for completion of do-that */
osSignalWait(0x0004, osWaitForever);
/* Wait now for 50 ms */
osDelay();
}
} /*----------------------------------------------------------------------------
* end of file
*---------------------------------------------------------------------------*/
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