mirror of
https://github.com/FreeRTOS/FreeRTOS-Kernel.git
synced 2025-08-19 09:38:32 -04:00
This commit is contained in:
Richard Barry
parent
3021b1acc8
commit
6456c000bd
57 changed files with 19588 additions and 0 deletions
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@ -109,6 +109,10 @@
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#include "..\..\Source\portable\IAR\STR71x\portmacro.h"
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#endif
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#ifdef STR75X_IAR
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#include "..\..\Source\portable\IAR\STR75x\portmacro.h"
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#endif
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#ifdef STR91X_IAR
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#include "..\..\Source\portable\IAR\STR91x\portmacro.h"
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#endif
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|
|
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108
Source/portable/IAR/STR75x/ISR_Support.h
Normal file
108
Source/portable/IAR/STR75x/ISR_Support.h
Normal file
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@ -0,0 +1,108 @@
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; FreeRTOS.org V4.1.2 - Copyright (C) 2003-2006 Richard Barry.
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;
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; This file is part of the FreeRTOS.org distribution.
|
||||
;
|
||||
; FreeRTOS.org is free software; you can redistribute it and/or modify
|
||||
; it under the terms of the GNU General Public License as published by
|
||||
; the Free Software Foundation; either version 2 of the License, or
|
||||
; (at your option) any later version.
|
||||
;
|
||||
; FreeRTOS.org 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.org; if not, write to the Free Software
|
||||
; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
;
|
||||
; A special exception to the GPL can be applied should you wish to distribute
|
||||
; a combined work that includes FreeRTOS.org, without being obliged to provide
|
||||
; the source code for any proprietary components. See the licensing section
|
||||
; of http://www.FreeRTOS.org for full details of how and when the exception
|
||||
; can be applied.
|
||||
;
|
||||
; ***************************************************************************
|
||||
; See http://www.FreeRTOS.org for documentation, latest information, license
|
||||
; and contact details. Please ensure to read the configuration and relevant
|
||||
; port sections of the online documentation.
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; ***************************************************************************
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EXTERN pxCurrentTCB
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EXTERN ulCriticalNesting
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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; Context save and restore macro definitions
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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portSAVE_CONTEXT MACRO
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; Push R0 as we are going to use the register.
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STMDB SP!, {R0}
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; Set R0 to point to the task stack pointer.
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STMDB SP, {SP}^
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NOP
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SUB SP, SP, #4
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LDMIA SP!, {R0}
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; Push the return address onto the stack.
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STMDB R0!, {LR}
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; Now we have saved LR we can use it instead of R0.
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MOV LR, R0
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; Pop R0 so we can save it onto the system mode stack.
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LDMIA SP!, {R0}
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; Push all the system mode registers onto the task stack.
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STMDB LR, {R0-LR}^
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NOP
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SUB LR, LR, #60
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; Push the SPSR onto the task stack.
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MRS R0, SPSR
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STMDB LR!, {R0}
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LDR R0, =ulCriticalNesting
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LDR R0, [R0]
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STMDB LR!, {R0}
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; Store the new top of stack for the task.
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LDR R1, =pxCurrentTCB
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LDR R0, [R1]
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STR LR, [R0]
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ENDM
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portRESTORE_CONTEXT MACRO
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; Set the LR to the task stack.
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LDR R1, =pxCurrentTCB
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LDR R0, [R1]
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LDR LR, [R0]
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; The critical nesting depth is the first item on the stack.
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; Load it into the ulCriticalNesting variable.
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LDR R0, =ulCriticalNesting
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LDMFD LR!, {R1}
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STR R1, [R0]
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; Get the SPSR from the stack.
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LDMFD LR!, {R0}
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MSR SPSR_cxsf, R0
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; Restore all system mode registers for the task.
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LDMFD LR, {R0-R14}^
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NOP
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; Restore the return address.
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LDR LR, [LR, #+60]
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; And return - correcting the offset in the LR to obtain the
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; correct address.
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SUBS PC, LR, #4
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ENDM
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241
Source/portable/IAR/STR75x/port.c
Normal file
241
Source/portable/IAR/STR75x/port.c
Normal file
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@ -0,0 +1,241 @@
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/*
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FreeRTOS.org V4.1.2 - Copyright (C) 2003-2006 Richard Barry.
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This file is part of the FreeRTOS.org distribution.
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||||
|
||||
FreeRTOS.org is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation; either version 2 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
FreeRTOS.org 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.org; if not, write to the Free Software
|
||||
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
|
||||
A special exception to the GPL can be applied should you wish to distribute
|
||||
a combined work that includes FreeRTOS.org, without being obliged to provide
|
||||
the source code for any proprietary components. See the licensing section
|
||||
of http://www.FreeRTOS.org for full details of how and when the exception
|
||||
can be applied.
|
||||
|
||||
***************************************************************************
|
||||
See http://www.FreeRTOS.org for documentation, latest information, license
|
||||
and contact details. Please ensure to read the configuration and relevant
|
||||
port sections of the online documentation.
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***************************************************************************
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*/
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/*-----------------------------------------------------------
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* Implementation of functions defined in portable.h for the ST STR75x ARM7
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* port.
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*----------------------------------------------------------*/
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/* Library includes. */
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#include "75x_tb.h"
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#include "75x_eic.h"
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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 setup the initial stack. */
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#define portINITIAL_SPSR ( ( portSTACK_TYPE ) 0x3f ) /* System mode, THUMB mode, interrupts enabled. */
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#define portINSTRUCTION_SIZE ( ( portSTACK_TYPE ) 4 )
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/* Constants required to handle critical sections. */
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#define portNO_CRITICAL_NESTING ( ( unsigned portLONG ) 0 )
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/* Prescale used on the timer clock when calculating the tick period. */
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#define portPRESCALE 20
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/*-----------------------------------------------------------*/
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/* Setup the watchdog to generate the tick interrupts. */
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static void prvSetupTimerInterrupt( void );
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/* ulCriticalNesting will get set to zero when the first task starts. It
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cannot be initialised to 0 as this will cause interrupts to be enabled
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during the kernel initialisation process. */
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unsigned portLONG ulCriticalNesting = ( unsigned portLONG ) 9999;
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/* Tick interrupt routines for preemptive operation. */
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__arm void vPortPreemptiveTick( void );
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/*-----------------------------------------------------------*/
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/*
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* Initialise the stack of a task to look exactly as if a call to
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* portSAVE_CONTEXT had been called.
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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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portSTACK_TYPE *pxOriginalTOS;
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pxOriginalTOS = pxTopOfStack;
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/* Setup the initial stack of the task. The stack is set exactly as
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expected by the portRESTORE_CONTEXT() macro. */
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/* First on the stack is the return address - which in this case is the
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start of the task. The offset is added to make the return address appear
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as it would within an IRQ ISR. */
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*pxTopOfStack = ( portSTACK_TYPE ) pxCode + portINSTRUCTION_SIZE;
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pxTopOfStack--;
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*pxTopOfStack = ( portSTACK_TYPE ) 0xaaaaaaaa; /* R14 */
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pxTopOfStack--;
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*pxTopOfStack = ( portSTACK_TYPE ) pxOriginalTOS; /* Stack used when task starts goes in R13. */
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pxTopOfStack--;
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*pxTopOfStack = ( portSTACK_TYPE ) 0x12121212; /* R12 */
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pxTopOfStack--;
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*pxTopOfStack = ( portSTACK_TYPE ) 0x11111111; /* R11 */
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pxTopOfStack--;
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*pxTopOfStack = ( portSTACK_TYPE ) 0x10101010; /* R10 */
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pxTopOfStack--;
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*pxTopOfStack = ( portSTACK_TYPE ) 0x09090909; /* R9 */
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pxTopOfStack--;
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*pxTopOfStack = ( portSTACK_TYPE ) 0x08080808; /* R8 */
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pxTopOfStack--;
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*pxTopOfStack = ( portSTACK_TYPE ) 0x07070707; /* R7 */
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pxTopOfStack--;
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*pxTopOfStack = ( portSTACK_TYPE ) 0x06060606; /* R6 */
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pxTopOfStack--;
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*pxTopOfStack = ( portSTACK_TYPE ) 0x05050505; /* R5 */
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pxTopOfStack--;
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*pxTopOfStack = ( portSTACK_TYPE ) 0x04040404; /* R4 */
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pxTopOfStack--;
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*pxTopOfStack = ( portSTACK_TYPE ) 0x03030303; /* R3 */
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pxTopOfStack--;
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*pxTopOfStack = ( portSTACK_TYPE ) 0x02020202; /* R2 */
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pxTopOfStack--;
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*pxTopOfStack = ( portSTACK_TYPE ) 0x01010101; /* R1 */
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pxTopOfStack--;
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/* When the task starts is will expect to find the function parameter in
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R0. */
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*pxTopOfStack = ( portSTACK_TYPE ) pvParameters; /* R0 */
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pxTopOfStack--;
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/* The status register is set for system mode, with interrupts enabled. */
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*pxTopOfStack = ( portSTACK_TYPE ) portINITIAL_SPSR;
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pxTopOfStack--;
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/* Interrupt flags cannot always be stored on the stack and will
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instead be stored in a variable, which is then saved as part of the
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tasks context. */
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*pxTopOfStack = portNO_CRITICAL_NESTING;
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return pxTopOfStack;
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}
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/*-----------------------------------------------------------*/
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portBASE_TYPE xPortStartScheduler( void )
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{
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extern void vPortStartFirstTask( void );
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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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/* 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 ARM 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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__arm void vPortPreemptiveTick( void )
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{
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/* Increment the tick counter. */
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vTaskIncrementTick();
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/* The new tick value might unblock a task. Ensure the highest task that
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is ready to execute is the task that will execute when the tick ISR
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exits. */
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#if configUSE_PREEMPTION == 1
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vTaskSwitchContext();
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#endif
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TB_ClearITPendingBit( TB_IT_Update );
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}
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/*-----------------------------------------------------------*/
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|
||||
static void prvSetupTimerInterrupt( void )
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{
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EIC_IRQInitTypeDef EIC_IRQInitStructure;
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TB_InitTypeDef TB_InitStructure;
|
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|
||||
/* Setup the EIC for the TB. */
|
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EIC_IRQInitStructure.EIC_IRQChannelCmd = ENABLE;
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EIC_IRQInitStructure.EIC_IRQChannel = TB_IRQChannel;
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EIC_IRQInitStructure.EIC_IRQChannelPriority = 1;
|
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EIC_IRQInit(&EIC_IRQInitStructure);
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||||
|
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/* Setup the TB for the generation of the tick interrupt. */
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TB_InitStructure.TB_Mode = TB_Mode_Timing;
|
||||
TB_InitStructure.TB_CounterMode = TB_CounterMode_Down;
|
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TB_InitStructure.TB_Prescaler = portPRESCALE;
|
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TB_InitStructure.TB_AutoReload = ( ( configCPU_CLOCK_HZ / ( portPRESCALE + 1 ) ) / configTICK_RATE_HZ ) + 1;
|
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TB_Init(&TB_InitStructure);
|
||||
|
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/* Enable TB Update interrupt */
|
||||
TB_ITConfig(TB_IT_Update, ENABLE);
|
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|
||||
/* Clear TB Update interrupt pending bit */
|
||||
TB_ClearITPendingBit(TB_IT_Update);
|
||||
|
||||
/* Enable TB */
|
||||
TB_Cmd(ENABLE);
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
__arm __interwork void vPortEnterCritical( void )
|
||||
{
|
||||
/* Disable interrupts first! */
|
||||
__disable_interrupt();
|
||||
|
||||
/* Now interrupts are disabled ulCriticalNesting can be accessed
|
||||
directly. Increment ulCriticalNesting to keep a count of how many times
|
||||
portENTER_CRITICAL() has been called. */
|
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ulCriticalNesting++;
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
__arm __interwork void vPortExitCritical( void )
|
||||
{
|
||||
if( ulCriticalNesting > portNO_CRITICAL_NESTING )
|
||||
{
|
||||
/* Decrement the nesting count as we are leaving a critical section. */
|
||||
ulCriticalNesting--;
|
||||
|
||||
/* If the nesting level has reached zero then interrupts should be
|
||||
re-enabled. */
|
||||
if( ulCriticalNesting == portNO_CRITICAL_NESTING )
|
||||
{
|
||||
__enable_interrupt();
|
||||
}
|
||||
}
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
66
Source/portable/IAR/STR75x/portasm.s79
Normal file
66
Source/portable/IAR/STR75x/portasm.s79
Normal file
|
|
@ -0,0 +1,66 @@
|
|||
; FreeRTOS.org V4.1.2 - Copyright (C) 2003-2006 Richard Barry.
|
||||
;
|
||||
; This file is part of the FreeRTOS.org distribution.
|
||||
;
|
||||
; FreeRTOS.org is free software; you can redistribute it and/or modify
|
||||
; it under the terms of the GNU General Public License as published by
|
||||
; the Free Software Foundation; either version 2 of the License, or
|
||||
; (at your option) any later version.
|
||||
;
|
||||
; FreeRTOS.org 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.org; if not, write to the Free Software
|
||||
; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
;
|
||||
; A special exception to the GPL can be applied should you wish to distribute
|
||||
; a combined work that includes FreeRTOS.org, without being obliged to provide
|
||||
; the source code for any proprietary components. See the licensing section
|
||||
; of http://www.FreeRTOS.org for full details of how and when the exception
|
||||
; can be applied.
|
||||
;
|
||||
; ***************************************************************************
|
||||
; See http://www.FreeRTOS.org for documentation, latest information, license
|
||||
; and contact details. Please ensure to read the configuration and relevant
|
||||
; port sections of the online documentation.
|
||||
; ***************************************************************************
|
||||
|
||||
RSEG ICODE:CODE
|
||||
CODE32
|
||||
|
||||
EXTERN vPortPreemptiveTick
|
||||
EXTERN vTaskSwitchContext
|
||||
|
||||
PUBLIC vPortYieldProcessor
|
||||
PUBLIC vPortStartFirstTask
|
||||
|
||||
#include "ISR_Support.h"
|
||||
|
||||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||||
; Starting the first task is just a matter of restoring the context that
|
||||
; was created by pxPortInitialiseStack().
|
||||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||||
vPortStartFirstTask:
|
||||
portRESTORE_CONTEXT
|
||||
|
||||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||||
; Manual context switch function. This is the SWI hander.
|
||||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||||
vPortYieldProcessor:
|
||||
ADD LR, LR, #4 ; Add 4 to the LR to make the LR appear exactly
|
||||
; as if the context was saved during and IRQ
|
||||
; handler.
|
||||
|
||||
portSAVE_CONTEXT ; Save the context of the current task...
|
||||
LDR R0, =vTaskSwitchContext ; before selecting the next task to execute.
|
||||
mov lr, pc
|
||||
BX R0
|
||||
portRESTORE_CONTEXT ; Restore the context of the selected task.
|
||||
|
||||
|
||||
|
||||
END
|
||||
|
||||
106
Source/portable/IAR/STR75x/portmacro.h
Normal file
106
Source/portable/IAR/STR75x/portmacro.h
Normal file
|
|
@ -0,0 +1,106 @@
|
|||
/*
|
||||
FreeRTOS.org V4.1.2 - Copyright (C) 2003-2006 Richard Barry.
|
||||
|
||||
This file is part of the FreeRTOS.org distribution.
|
||||
|
||||
FreeRTOS.org is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation; either version 2 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
FreeRTOS.org 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.org; if not, write to the Free Software
|
||||
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
|
||||
A special exception to the GPL can be applied should you wish to distribute
|
||||
a combined work that includes FreeRTOS.org, without being obliged to provide
|
||||
the source code for any proprietary components. See the licensing section
|
||||
of http://www.FreeRTOS.org for full details of how and when the exception
|
||||
can be applied.
|
||||
|
||||
***************************************************************************
|
||||
See http://www.FreeRTOS.org for documentation, latest information, license
|
||||
and contact details. Please ensure to read the configuration and relevant
|
||||
port sections of the online documentation.
|
||||
***************************************************************************
|
||||
*/
|
||||
|
||||
|
||||
#ifndef PORTMACRO_H
|
||||
#define PORTMACRO_H
|
||||
|
||||
/*-----------------------------------------------------------
|
||||
* Port specific definitions.
|
||||
*
|
||||
* The settings in this file configure FreeRTOS correctly for the
|
||||
* given hardware and compiler.
|
||||
*
|
||||
* These settings should not be altered.
|
||||
*-----------------------------------------------------------
|
||||
*/
|
||||
|
||||
#include <intrinsic.h>
|
||||
|
||||
/* 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 portLONG
|
||||
|
||||
#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
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/* Hardware specifics. */
|
||||
#define portSTACK_GROWTH ( -1 )
|
||||
#define portTICK_RATE_MS ( ( portTickType ) 1000 / configTICK_RATE_HZ )
|
||||
#define portBYTE_ALIGNMENT 4
|
||||
#define portYIELD() asm ( "SWI 0" )
|
||||
#define portNOP() asm ( "NOP" )
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/* Critical section handling. */
|
||||
__arm __interwork void vPortEnterCritical( void );
|
||||
__arm __interwork void vPortExitCritical( void );
|
||||
|
||||
#define portDISABLE_INTERRUPTS() __disable_interrupt()
|
||||
#define portENABLE_INTERRUPTS() __enable_interrupt()
|
||||
#define portENTER_CRITICAL() vPortEnterCritical()
|
||||
#define portEXIT_CRITICAL() vPortExitCritical()
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/* Task utilities. */
|
||||
#define portEND_SWITCHING_ISR( xSwitchRequired ) \
|
||||
{ \
|
||||
extern void vTaskSwitchContext( void ); \
|
||||
\
|
||||
if( xSwitchRequired ) \
|
||||
{ \
|
||||
vTaskSwitchContext(); \
|
||||
} \
|
||||
}
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/* Compiler specifics */
|
||||
#define inline
|
||||
|
||||
/* 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 )
|
||||
|
||||
#endif /* PORTMACRO_H */
|
||||
|
||||
|
||||
Loading…
Add table
Add a link
Reference in a new issue