mirror of
https://github.com/FreeRTOS/FreeRTOS-Kernel.git
synced 2025-11-07 04:02:35 -05:00
Before changing headers to V6 and changing portLONG, portSHORt and portCHAR to their standard C types.
This commit is contained in:
Richard Barry
parent
3dfbb349ca
commit
5c64e1fad9
4417 changed files with 1261274 additions and 0 deletions
209
20091005/Source/portable/IAR/ARM_CM3/port.c
Normal file
209
20091005/Source/portable/IAR/ARM_CM3/port.c
Normal file
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@ -0,0 +1,209 @@
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/*
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FreeRTOS V5.4.2 - Copyright (C) 2009 Real Time Engineers Ltd.
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This file is part of the FreeRTOS distribution.
|
||||
|
||||
FreeRTOS is free software; you can redistribute it and/or modify it under
|
||||
the terms of the GNU General Public License (version 2) as published by the
|
||||
Free Software Foundation and modified by the FreeRTOS exception.
|
||||
**NOTE** The exception to the GPL is included to allow you to distribute a
|
||||
combined work that includes FreeRTOS without being obliged to provide the
|
||||
source code for proprietary components outside of the FreeRTOS kernel.
|
||||
Alternative commercial license and support terms are also available upon
|
||||
request. See the licensing section of http://www.FreeRTOS.org for full
|
||||
license details.
|
||||
|
||||
FreeRTOS is distributed in the hope that it will be useful, but WITHOUT
|
||||
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||||
more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License along
|
||||
with FreeRTOS; if not, write to the Free Software Foundation, Inc., 59
|
||||
Temple Place, Suite 330, Boston, MA 02111-1307 USA.
|
||||
|
||||
|
||||
***************************************************************************
|
||||
* *
|
||||
* Looking for a quick start? Then check out the FreeRTOS eBook! *
|
||||
* See http://www.FreeRTOS.org/Documentation for details *
|
||||
* *
|
||||
***************************************************************************
|
||||
|
||||
1 tab == 4 spaces!
|
||||
|
||||
Please ensure to read the configuration and relevant port sections of the
|
||||
online documentation.
|
||||
|
||||
http://www.FreeRTOS.org - Documentation, latest information, license and
|
||||
contact details.
|
||||
|
||||
http://www.SafeRTOS.com - A version that is certified for use in safety
|
||||
critical systems.
|
||||
|
||||
http://www.OpenRTOS.com - Commercial support, development, porting,
|
||||
licensing and training services.
|
||||
*/
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||||
|
||||
/*
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Change from V4.2.1:
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+ Introduced usage of configKERNEL_INTERRUPT_PRIORITY macro to set the
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interrupt priority used by the kernel.
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*/
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/*-----------------------------------------------------------
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* Implementation of functions defined in portable.h for the ARM CM3 port.
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*----------------------------------------------------------*/
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/* Scheduler includes. */
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#include "FreeRTOS.h"
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#include "task.h"
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/* Constants required to manipulate the NVIC. */
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#define portNVIC_SYSTICK_CTRL ( ( volatile unsigned portLONG *) 0xe000e010 )
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#define portNVIC_SYSTICK_LOAD ( ( volatile unsigned portLONG *) 0xe000e014 )
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#define portNVIC_INT_CTRL ( ( volatile unsigned portLONG *) 0xe000ed04 )
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#define portNVIC_SYSPRI2 ( ( volatile unsigned portLONG *) 0xe000ed20 )
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#define portNVIC_SYSTICK_CLK 0x00000004
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#define portNVIC_SYSTICK_INT 0x00000002
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#define portNVIC_SYSTICK_ENABLE 0x00000001
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#define portNVIC_PENDSVSET 0x10000000
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#define portNVIC_PENDSV_PRI ( ( ( unsigned portLONG ) configKERNEL_INTERRUPT_PRIORITY ) << 16 )
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#define portNVIC_SYSTICK_PRI ( ( ( unsigned portLONG ) configKERNEL_INTERRUPT_PRIORITY ) << 24 )
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/* Constants required to set up the initial stack. */
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#define portINITIAL_XPSR ( 0x01000000 )
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/* For backward compatibility, ensure configKERNEL_INTERRUPT_PRIORITY is
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defined. The value 255 should also ensure backward compatibility.
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FreeRTOS.org versions prior to V4.3.0 did not include this definition. */
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#ifndef configKERNEL_INTERRUPT_PRIORITY
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#define configKERNEL_INTERRUPT_PRIORITY 0
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#endif
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/* Each task maintains its own interrupt status in the critical nesting
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variable. */
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static unsigned portBASE_TYPE uxCriticalNesting = 0xaaaaaaaa;
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/*
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* Setup the timer to generate the tick interrupts.
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*/
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static void prvSetupTimerInterrupt( void );
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/*
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* Exception handlers.
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*/
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void xPortSysTickHandler( void );
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/*
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* Start first task is a separate function so it can be tested in isolation.
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*/
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extern void vPortStartFirstTask( void );
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/*-----------------------------------------------------------*/
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/*
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* See header file for description.
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*/
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portSTACK_TYPE *pxPortInitialiseStack( portSTACK_TYPE *pxTopOfStack, pdTASK_CODE pxCode, void *pvParameters )
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{
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/* Simulate the stack frame as it would be created by a context switch
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interrupt. */
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*pxTopOfStack = portINITIAL_XPSR; /* xPSR */
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pxTopOfStack--;
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*pxTopOfStack = ( portSTACK_TYPE ) pxCode; /* PC */
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pxTopOfStack--;
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*pxTopOfStack = 0; /* LR */
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pxTopOfStack -= 5; /* R12, R3, R2 and R1. */
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*pxTopOfStack = ( portSTACK_TYPE ) pvParameters; /* R0 */
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pxTopOfStack -= 8; /* R11, R10, R9, R8, R7, R6, R5 and R4. */
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return pxTopOfStack;
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}
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/*-----------------------------------------------------------*/
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/*
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* See header file for description.
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*/
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portBASE_TYPE xPortStartScheduler( void )
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{
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/* Make PendSV and SysTick the lowest priority interrupts. */
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*(portNVIC_SYSPRI2) |= portNVIC_PENDSV_PRI;
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*(portNVIC_SYSPRI2) |= portNVIC_SYSTICK_PRI;
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/* Start the timer that generates the tick ISR. Interrupts are disabled
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here already. */
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prvSetupTimerInterrupt();
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/* Initialise the critical nesting count ready for the first task. */
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uxCriticalNesting = 0;
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/* Start the first task. */
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vPortStartFirstTask();
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/* Should not get here! */
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return 0;
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}
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/*-----------------------------------------------------------*/
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void vPortEndScheduler( void )
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{
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/* It is unlikely that the CM3 port will require this function as there
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is nothing to return to. */
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}
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/*-----------------------------------------------------------*/
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void vPortYieldFromISR( void )
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{
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/* Set a PendSV to request a context switch. */
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*(portNVIC_INT_CTRL) = portNVIC_PENDSVSET;
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}
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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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uxCriticalNesting++;
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}
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/*-----------------------------------------------------------*/
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void vPortExitCritical( void )
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{
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uxCriticalNesting--;
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if( uxCriticalNesting == 0 )
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{
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portENABLE_INTERRUPTS();
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}
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}
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/*-----------------------------------------------------------*/
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void xPortSysTickHandler( void )
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{
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unsigned portLONG ulDummy;
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/* If using preemption, also force a context switch. */
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#if configUSE_PREEMPTION == 1
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*(portNVIC_INT_CTRL) = portNVIC_PENDSVSET;
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#endif
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ulDummy = portSET_INTERRUPT_MASK_FROM_ISR();
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{
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vTaskIncrementTick();
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}
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portCLEAR_INTERRUPT_MASK_FROM_ISR( ulDummy );
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}
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/*-----------------------------------------------------------*/
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/*
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* Setup the systick timer to generate the tick interrupts at the required
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* frequency.
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*/
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void prvSetupTimerInterrupt( void )
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{
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/* Configure SysTick to interrupt at the requested rate. */
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*(portNVIC_SYSTICK_LOAD) = ( configCPU_CLOCK_HZ / configTICK_RATE_HZ ) - 1UL;
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*(portNVIC_SYSTICK_CTRL) = portNVIC_SYSTICK_CLK | portNVIC_SYSTICK_INT | portNVIC_SYSTICK_ENABLE;
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}
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/*-----------------------------------------------------------*/
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157
20091005/Source/portable/IAR/ARM_CM3/portasm.s
Normal file
157
20091005/Source/portable/IAR/ARM_CM3/portasm.s
Normal file
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@ -0,0 +1,157 @@
|
|||
/*
|
||||
FreeRTOS V5.4.2 - Copyright (C) 2009 Real Time Engineers Ltd.
|
||||
|
||||
This file is part of the FreeRTOS distribution.
|
||||
|
||||
FreeRTOS is free software; you can redistribute it and/or modify it under
|
||||
the terms of the GNU General Public License (version 2) as published by the
|
||||
Free Software Foundation and modified by the FreeRTOS exception.
|
||||
**NOTE** The exception to the GPL is included to allow you to distribute a
|
||||
combined work that includes FreeRTOS without being obliged to provide the
|
||||
source code for proprietary components outside of the FreeRTOS kernel.
|
||||
Alternative commercial license and support terms are also available upon
|
||||
request. See the licensing section of http://www.FreeRTOS.org for full
|
||||
license details.
|
||||
|
||||
FreeRTOS is distributed in the hope that it will be useful, but WITHOUT
|
||||
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||||
more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License along
|
||||
with FreeRTOS; if not, write to the Free Software Foundation, Inc., 59
|
||||
Temple Place, Suite 330, Boston, MA 02111-1307 USA.
|
||||
|
||||
|
||||
***************************************************************************
|
||||
* *
|
||||
* Looking for a quick start? Then check out the FreeRTOS eBook! *
|
||||
* See http://www.FreeRTOS.org/Documentation for details *
|
||||
* *
|
||||
***************************************************************************
|
||||
|
||||
1 tab == 4 spaces!
|
||||
|
||||
Please ensure to read the configuration and relevant port sections of the
|
||||
online documentation.
|
||||
|
||||
http://www.FreeRTOS.org - Documentation, latest information, license and
|
||||
contact details.
|
||||
|
||||
http://www.SafeRTOS.com - A version that is certified for use in safety
|
||||
critical systems.
|
||||
|
||||
http://www.OpenRTOS.com - Commercial support, development, porting,
|
||||
licensing and training services.
|
||||
*/
|
||||
|
||||
/*
|
||||
Change from V4.2.1:
|
||||
|
||||
+ Introduced usage of configKERNEL_INTERRUPT_PRIORITY macro to set the
|
||||
interrupt priority used by the kernel.
|
||||
*/
|
||||
|
||||
#include <FreeRTOSConfig.h>
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||||
|
||||
/* For backward compatibility, ensure configKERNEL_INTERRUPT_PRIORITY is
|
||||
defined. The value zero should also ensure backward compatibility.
|
||||
FreeRTOS.org versions prior to V4.3.0 did not include this definition. */
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||||
#ifndef configKERNEL_INTERRUPT_PRIORITY
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#define configKERNEL_INTERRUPT_PRIORITY 0
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#endif
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RSEG CODE:CODE(2)
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thumb
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EXTERN vPortYieldFromISR
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EXTERN pxCurrentTCB
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EXTERN vTaskSwitchContext
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PUBLIC vSetMSP
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PUBLIC xPortPendSVHandler
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PUBLIC vPortSetInterruptMask
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PUBLIC vPortClearInterruptMask
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PUBLIC vPortSVCHandler
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PUBLIC vPortStartFirstTask
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/*-----------------------------------------------------------*/
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vSetMSP
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msr msp, r0
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bx lr
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||||
/*-----------------------------------------------------------*/
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||||
|
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xPortPendSVHandler:
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mrs r0, psp
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ldr r3, =pxCurrentTCB /* Get the location of the current TCB. */
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ldr r2, [r3]
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||||
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stmdb r0!, {r4-r11} /* Save the remaining registers. */
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||||
str r0, [r2] /* Save the new top of stack into the first member of the TCB. */
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|
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stmdb sp!, {r3, r14}
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mov r0, #configMAX_SYSCALL_INTERRUPT_PRIORITY
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msr basepri, r0
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bl vTaskSwitchContext
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mov r0, #0
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msr basepri, r0
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ldmia sp!, {r3, r14}
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|
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ldr r1, [r3]
|
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ldr r0, [r1] /* The first item in pxCurrentTCB is the task top of stack. */
|
||||
ldmia r0!, {r4-r11} /* Pop the registers. */
|
||||
msr psp, r0
|
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bx r14
|
||||
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
vPortSetInterruptMask:
|
||||
push { r0 }
|
||||
mov R0, #configMAX_SYSCALL_INTERRUPT_PRIORITY
|
||||
msr BASEPRI, R0
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||||
pop { R0 }
|
||||
|
||||
bx r14
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
vPortClearInterruptMask:
|
||||
PUSH { r0 }
|
||||
MOV R0, #0
|
||||
MSR BASEPRI, R0
|
||||
POP { R0 }
|
||||
|
||||
bx r14
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
vPortSVCHandler;
|
||||
ldr r3, =pxCurrentTCB
|
||||
ldr r1, [r3]
|
||||
ldr r0, [r1]
|
||||
ldmia r0!, {r4-r11}
|
||||
msr psp, r0
|
||||
mov r0, #0
|
||||
msr basepri, r0
|
||||
orr r14, r14, #13
|
||||
bx r14
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
vPortStartFirstTask
|
||||
/* Use the NVIC offset register to locate the stack. */
|
||||
ldr r0, =0xE000ED08
|
||||
ldr r0, [r0]
|
||||
ldr r0, [r0]
|
||||
/* Set the msp back to the start of the stack. */
|
||||
msr msp, r0
|
||||
/* Call SVC to start the first task. */
|
||||
svc 0
|
||||
|
||||
END
|
||||
|
||||
127
20091005/Source/portable/IAR/ARM_CM3/portmacro.h
Normal file
127
20091005/Source/portable/IAR/ARM_CM3/portmacro.h
Normal file
|
|
@ -0,0 +1,127 @@
|
|||
/*
|
||||
FreeRTOS V5.4.2 - Copyright (C) 2009 Real Time Engineers Ltd.
|
||||
|
||||
This file is part of the FreeRTOS distribution.
|
||||
|
||||
FreeRTOS is free software; you can redistribute it and/or modify it under
|
||||
the terms of the GNU General Public License (version 2) as published by the
|
||||
Free Software Foundation and modified by the FreeRTOS exception.
|
||||
**NOTE** The exception to the GPL is included to allow you to distribute a
|
||||
combined work that includes FreeRTOS without being obliged to provide the
|
||||
source code for proprietary components outside of the FreeRTOS kernel.
|
||||
Alternative commercial license and support terms are also available upon
|
||||
request. See the licensing section of http://www.FreeRTOS.org for full
|
||||
license details.
|
||||
|
||||
FreeRTOS is distributed in the hope that it will be useful, but WITHOUT
|
||||
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||||
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
||||
more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License along
|
||||
with FreeRTOS; if not, write to the Free Software Foundation, Inc., 59
|
||||
Temple Place, Suite 330, Boston, MA 02111-1307 USA.
|
||||
|
||||
|
||||
***************************************************************************
|
||||
* *
|
||||
* Looking for a quick start? Then check out the FreeRTOS eBook! *
|
||||
* See http://www.FreeRTOS.org/Documentation for details *
|
||||
* *
|
||||
***************************************************************************
|
||||
|
||||
1 tab == 4 spaces!
|
||||
|
||||
Please ensure to read the configuration and relevant port sections of the
|
||||
online documentation.
|
||||
|
||||
http://www.FreeRTOS.org - Documentation, latest information, license and
|
||||
contact details.
|
||||
|
||||
http://www.SafeRTOS.com - A version that is certified for use in safety
|
||||
critical systems.
|
||||
|
||||
http://www.OpenRTOS.com - Commercial support, development, porting,
|
||||
licensing and training services.
|
||||
*/
|
||||
|
||||
|
||||
#ifndef PORTMACRO_H
|
||||
#define PORTMACRO_H
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
/*-----------------------------------------------------------
|
||||
* Port specific definitions.
|
||||
*
|
||||
* The settings in this file configure FreeRTOS correctly for the
|
||||
* given hardware and compiler.
|
||||
*
|
||||
* These settings should not be altered.
|
||||
*-----------------------------------------------------------
|
||||
*/
|
||||
|
||||
/* Type definitions. */
|
||||
#define portCHAR char
|
||||
#define portFLOAT float
|
||||
#define portDOUBLE double
|
||||
#define portLONG long
|
||||
#define portSHORT short
|
||||
#define portSTACK_TYPE unsigned portLONG
|
||||
#define portBASE_TYPE long
|
||||
|
||||
#if( configUSE_16_BIT_TICKS == 1 )
|
||||
typedef unsigned portSHORT portTickType;
|
||||
#define portMAX_DELAY ( portTickType ) 0xffff
|
||||
#else
|
||||
typedef unsigned portLONG portTickType;
|
||||
#define portMAX_DELAY ( portTickType ) 0xffffffff
|
||||
#endif
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/* Architecture specifics. */
|
||||
#define portSTACK_GROWTH ( -1 )
|
||||
#define portTICK_RATE_MS ( ( portTickType ) 1000 / configTICK_RATE_HZ )
|
||||
#define portBYTE_ALIGNMENT 8
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
|
||||
/* Scheduler utilities. */
|
||||
extern void vPortYieldFromISR( void );
|
||||
|
||||
#define portYIELD() vPortYieldFromISR()
|
||||
|
||||
#define portEND_SWITCHING_ISR( xSwitchRequired ) if( xSwitchRequired ) vPortYieldFromISR()
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
|
||||
/* Critical section management. */
|
||||
|
||||
extern void vPortEnterCritical( void );
|
||||
extern void vPortExitCritical( void );
|
||||
extern void vPortSetInterruptMask( void );
|
||||
extern void vPortClearInterruptMask( void );
|
||||
|
||||
#define portDISABLE_INTERRUPTS() vPortSetInterruptMask()
|
||||
#define portENABLE_INTERRUPTS() vPortClearInterruptMask()
|
||||
#define portENTER_CRITICAL() vPortEnterCritical()
|
||||
#define portEXIT_CRITICAL() vPortExitCritical()
|
||||
#define portSET_INTERRUPT_MASK_FROM_ISR() 0;vPortSetInterruptMask()
|
||||
#define portCLEAR_INTERRUPT_MASK_FROM_ISR(x) vPortClearInterruptMask();(void)x
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/* Task function macros as described on the FreeRTOS.org WEB site. */
|
||||
#define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )
|
||||
#define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )
|
||||
|
||||
#define portNOP()
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* PORTMACRO_H */
|
||||
|
||||
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Add table
Add a link
Reference in a new issue