Moved proj up
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@@ -0,0 +1,168 @@
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/*
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* Copyright (C) 2017 C-SKY Microsystems Co., Ltd. All rights reserved.
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*
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* SPDX-License-Identifier: MIT
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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* the Software, and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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/* Kernel includes. */
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#include "FreeRTOS.h"
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#include "task.h"
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extern void vPortStartTask( void );
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/* Used to keep track of the number of nested calls to taskENTER_CRITICAL(). This
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* will be set to 0 prior to the first task being started. */
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portLONG ulCriticalNesting = 0x9999UL;
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/* Used to record one tack want to switch task after enter critical area, we need know it
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* and implement task switch after exit critical area */
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portLONG pendsvflag = 0;
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StackType_t * pxPortInitialiseStack( StackType_t * pxTopOfStack,
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TaskFunction_t pxCode,
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void * pvParameters )
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{
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StackType_t * stk = NULL;
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stk = pxTopOfStack;
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*( --stk ) = ( uint32_t ) pxCode; /* Entry Point */
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*( --stk ) = ( uint32_t ) 0xE0000140L; /* PSR */
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*( --stk ) = ( uint32_t ) 0xFFFFFFFEL; /* R15 (LR) (init value will cause fault if ever used) */
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*( --stk ) = ( uint32_t ) 0x13131313L; /* R13 */
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*( --stk ) = ( uint32_t ) 0x12121212L; /* R12 */
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*( --stk ) = ( uint32_t ) 0x11111111L; /* R11 */
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*( --stk ) = ( uint32_t ) 0x10101010L; /* R10 */
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*( --stk ) = ( uint32_t ) 0x09090909L; /* R9 */
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*( --stk ) = ( uint32_t ) 0x08080808L; /* R8 */
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*( --stk ) = ( uint32_t ) 0x07070707L; /* R7 */
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*( --stk ) = ( uint32_t ) 0x06060606L; /* R6 */
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*( --stk ) = ( uint32_t ) 0x05050505L; /* R5 */
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*( --stk ) = ( uint32_t ) 0x04040404L; /* R4 */
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*( --stk ) = ( uint32_t ) 0x03030303L; /* R3 */
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*( --stk ) = ( uint32_t ) 0x02020202L; /* R2 */
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*( --stk ) = ( uint32_t ) 0x01010101L; /* R1 */
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*( --stk ) = ( uint32_t ) pvParameters; /* R0 : argument */
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return stk;
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}
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BaseType_t xPortStartScheduler( void )
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{
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ulCriticalNesting = 0UL;
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vPortStartTask();
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return pdFALSE;
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}
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void vPortEndScheduler( void )
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{
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/* Not implemented as there is nothing to return to. */
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}
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void vPortEnterCritical( void )
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{
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portDISABLE_INTERRUPTS();
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ulCriticalNesting++;
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}
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void vPortExitCritical( void )
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{
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if( ulCriticalNesting == 0 )
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{
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while( 1 )
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{
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}
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}
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ulCriticalNesting--;
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if( ulCriticalNesting == 0 )
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{
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portENABLE_INTERRUPTS();
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if( pendsvflag )
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{
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pendsvflag = 0;
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portYIELD();
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}
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}
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}
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#if configUSE_PREEMPTION == 0
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void xPortSysTickHandler( void )
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{
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portLONG ulDummy;
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ulDummy = portSET_INTERRUPT_MASK_FROM_ISR();
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xTaskIncrementTick();
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portCLEAR_INTERRUPT_MASK_FROM_ISR( ulDummy );
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}
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#else
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void xPortSysTickHandler( void )
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{
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portLONG ulDummy;
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ulDummy = portSET_INTERRUPT_MASK_FROM_ISR();
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traceISR_ENTER();
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{
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if( xTaskIncrementTick() != pdFALSE )
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{
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traceISR_EXIT_TO_SCHEDULER();
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portYIELD_FROM_ISR( pdTRUE );
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}
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else
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{
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traceISR_EXIT();
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}
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}
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portCLEAR_INTERRUPT_MASK_FROM_ISR( ulDummy );
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}
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#endif /* if configUSE_PREEMPTION == 0 */
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void vPortYieldHandler( void )
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{
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uint32_t ulSavedInterruptMask;
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ulSavedInterruptMask = portSET_INTERRUPT_MASK_FROM_ISR();
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vTaskSwitchContext();
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portCLEAR_INTERRUPT_MASK_FROM_ISR( ulSavedInterruptMask );
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}
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__attribute__( ( weak ) ) void vApplicationStackOverflowHook( xTaskHandle * pxTask,
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signed portCHAR * pcTaskName )
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{
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for( ; ; )
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{
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}
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}
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__attribute__( ( weak ) ) void vApplicationMallocFailedHook( void )
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{
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for( ; ; )
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{
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}
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}
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