len0rd/FreeRTOS-Kernel
1
0
Fork 0
mirror of https://github.com/FreeRTOS/FreeRTOS-Kernel.git synced 2025-09-05 05:43:51 -04:00
Code Issues Projects Releases Packages Wiki Activity

Feature: SMP (#278)

Browse source 
* Add XMOS XCore ports

Some minor modifications are also made to the kernel to support the
XCore compiler's automatic stack size calculation.

* Update kernel to support SMP

The XMOS XCore ports are also updated to support SMP.

* Fix compiler warnings in xcore ports

The port set and clear interrupt mask from ISR macros were removed from
the ports so that the default macros found in FreeRTOS.h are used
instead. The default macros do not result in warnings when they are
used.

* Remove inline function from timers.h

Inline function converted to macro. This should now build when
optimizations are off and inlining is disabled.

* Fix compiler warnings in xcore ports and tasks.c

* fixed documentation for ulTaskNotifyTake() and ulTaskNotifyTakeIndexed()

* spelling fixes for tasks.c

Co-authored-by: Michael Bruno <mikeb@xmos.com>
This commit is contained in:
Joseph Julicher 2021-03-15 17:29:08 -07:00 • committed by GitHub
parent cafae476e4
commit 989bc332b2
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
509 changed files with 176869 additions and 174380 deletions
Download patch file Download diff file Expand all files Collapse all files

346
portable/IAR/MSP430/port.c
View file

@ -1,173 +1,173 @@
/*
* FreeRTOS Kernel V10.4.3
* Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* https://www.FreeRTOS.org
* https://github.com/FreeRTOS
*
* 1 tab == 4 spaces!
*/
/* Scheduler includes. */
#include "FreeRTOS.h"
#include "task.h"
/*-----------------------------------------------------------
* Implementation of functions defined in portable.h for the MSP430 port.
*----------------------------------------------------------*/
/* Constants required for hardware setup. The tick ISR runs off the ACLK,
not the MCLK. */
#define portACLK_FREQUENCY_HZ ( ( TickType_t ) 32768 )
#define portINITIAL_CRITICAL_NESTING ( ( uint16_t ) 10 )
#define portFLAGS_INT_ENABLED ( ( StackType_t ) 0x08 )
/* We require the address of the pxCurrentTCB variable, but don't want to know
any details of its type. */
typedef void TCB_t;
extern volatile TCB_t * volatile pxCurrentTCB;
/* Each task maintains a count of the critical section nesting depth. Each
time a critical section is entered the count is incremented. Each time a
critical section is exited the count is decremented - with interrupts only
being re-enabled if the count is zero.
usCriticalNesting will get set to zero when the scheduler starts, but must
not be initialised to zero as this will cause problems during the startup
sequence. */
volatile uint16_t usCriticalNesting = portINITIAL_CRITICAL_NESTING;
/*-----------------------------------------------------------*/
/*
* Sets up the periodic ISR used for the RTOS tick. This uses timer 0, but
* could have alternatively used the watchdog timer or timer 1.
*/
void vPortSetupTimerInterrupt( void );
/*-----------------------------------------------------------*/
/*
* Initialise the stack of a task to look exactly as if a call to
* portSAVE_CONTEXT had been called.
*
* See the header file portable.h.
*/
StackType_t *pxPortInitialiseStack( StackType_t *pxTopOfStack, TaskFunction_t pxCode, void *pvParameters )
{
/*
Place a few bytes of known values on the bottom of the stack.
This is just useful for debugging and can be included if required.
*pxTopOfStack = ( StackType_t ) 0x1111;
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x2222;
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x3333;
pxTopOfStack--;
*/
/* The msp430 automatically pushes the PC then SR onto the stack before
executing an ISR. We want the stack to look just as if this has happened
so place a pointer to the start of the task on the stack first - followed
by the flags we want the task to use when it starts up. */
*pxTopOfStack = ( StackType_t ) pxCode;
pxTopOfStack--;
*pxTopOfStack = portFLAGS_INT_ENABLED;
pxTopOfStack--;
/* Next the general purpose registers. */
*pxTopOfStack = ( StackType_t ) 0x4444;
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x5555;
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x6666;
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x7777;
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x8888;
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x9999;
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0xaaaa;
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0xbbbb;
pxTopOfStack--;
/* When the task starts is will expect to find the function parameter in
R15. */
*pxTopOfStack = ( StackType_t ) pvParameters;
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0xdddd;
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0xeeee;
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0xffff;
pxTopOfStack--;
/* A variable is used to keep track of the critical section nesting.
This variable has to be stored as part of the task context and is
initially set to zero. */
*pxTopOfStack = ( StackType_t ) portNO_CRITICAL_SECTION_NESTING;
/* Return a pointer to the top of the stack we have generated so this can
be stored in the task control block for the task. */
return pxTopOfStack;
}
/*-----------------------------------------------------------*/
void vPortEndScheduler( void )
{
/* It is unlikely that the MSP430 port will get stopped. If required simply
disable the tick interrupt here. */
}
/*-----------------------------------------------------------*/
/*
* Hardware initialisation to generate the RTOS tick. This uses timer 0
* but could alternatively use the watchdog timer or timer 1.
*/
void vPortSetupTimerInterrupt( void )
{
/* Ensure the timer is stopped. */
TACTL = 0;
/* Run the timer of the ACLK. */
TACTL = TASSEL_1;
/* Clear everything to start with. */
TACTL |= TACLR;
/* Set the compare match value according to the tick rate we want. */
TACCR0 = portACLK_FREQUENCY_HZ / configTICK_RATE_HZ;
/* Enable the interrupts. */
TACCTL0 = CCIE;
/* Start up clean. */
TACTL |= TACLR;
/* Up mode. */
TACTL |= MC_1;
}
/*-----------------------------------------------------------*/
/*
* FreeRTOS Kernel V10.4.3
* Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* https://www.FreeRTOS.org
* https://github.com/FreeRTOS
*
* 1 tab == 4 spaces!
*/
/* Scheduler includes. */
#include "FreeRTOS.h"
#include "task.h"
/*-----------------------------------------------------------
* Implementation of functions defined in portable.h for the MSP430 port.
*----------------------------------------------------------*/
/* Constants required for hardware setup. The tick ISR runs off the ACLK,
not the MCLK. */
#define portACLK_FREQUENCY_HZ ( ( TickType_t ) 32768 )
#define portINITIAL_CRITICAL_NESTING ( ( uint16_t ) 10 )
#define portFLAGS_INT_ENABLED ( ( StackType_t ) 0x08 )
/* We require the address of the pxCurrentTCB variable, but don't want to know
any details of its type. */
typedef void TCB_t;
extern volatile TCB_t * volatile pxCurrentTCB;
/* Each task maintains a count of the critical section nesting depth. Each
time a critical section is entered the count is incremented. Each time a
critical section is exited the count is decremented - with interrupts only
being re-enabled if the count is zero.
usCriticalNesting will get set to zero when the scheduler starts, but must
not be initialised to zero as this will cause problems during the startup
sequence. */
volatile uint16_t usCriticalNesting = portINITIAL_CRITICAL_NESTING;
/*-----------------------------------------------------------*/
/*
* Sets up the periodic ISR used for the RTOS tick. This uses timer 0, but
* could have alternatively used the watchdog timer or timer 1.
*/
void vPortSetupTimerInterrupt( void );
/*-----------------------------------------------------------*/
/*
* Initialise the stack of a task to look exactly as if a call to
* portSAVE_CONTEXT had been called.
*
* See the header file portable.h.
*/
StackType_t *pxPortInitialiseStack( StackType_t *pxTopOfStack, TaskFunction_t pxCode, void *pvParameters )
{
/*
Place a few bytes of known values on the bottom of the stack.
This is just useful for debugging and can be included if required.
*pxTopOfStack = ( StackType_t ) 0x1111;
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x2222;
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x3333;
pxTopOfStack--;
*/
/* The msp430 automatically pushes the PC then SR onto the stack before
executing an ISR. We want the stack to look just as if this has happened
so place a pointer to the start of the task on the stack first - followed
by the flags we want the task to use when it starts up. */
*pxTopOfStack = ( StackType_t ) pxCode;
pxTopOfStack--;
*pxTopOfStack = portFLAGS_INT_ENABLED;
pxTopOfStack--;
/* Next the general purpose registers. */
*pxTopOfStack = ( StackType_t ) 0x4444;
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x5555;
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x6666;
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x7777;
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x8888;
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0x9999;
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0xaaaa;
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0xbbbb;
pxTopOfStack--;
/* When the task starts is will expect to find the function parameter in
R15. */
*pxTopOfStack = ( StackType_t ) pvParameters;
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0xdddd;
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0xeeee;
pxTopOfStack--;
*pxTopOfStack = ( StackType_t ) 0xffff;
pxTopOfStack--;
/* A variable is used to keep track of the critical section nesting.
This variable has to be stored as part of the task context and is
initially set to zero. */
*pxTopOfStack = ( StackType_t ) portNO_CRITICAL_SECTION_NESTING;
/* Return a pointer to the top of the stack we have generated so this can
be stored in the task control block for the task. */
return pxTopOfStack;
}
/*-----------------------------------------------------------*/
void vPortEndScheduler( void )
{
/* It is unlikely that the MSP430 port will get stopped. If required simply
disable the tick interrupt here. */
}
/*-----------------------------------------------------------*/
/*
* Hardware initialisation to generate the RTOS tick. This uses timer 0
* but could alternatively use the watchdog timer or timer 1.
*/
void vPortSetupTimerInterrupt( void )
{
/* Ensure the timer is stopped. */
TACTL = 0;
/* Run the timer of the ACLK. */
TACTL = TASSEL_1;
/* Clear everything to start with. */
TACTL |= TACLR;
/* Set the compare match value according to the tick rate we want. */
TACCR0 = portACLK_FREQUENCY_HZ / configTICK_RATE_HZ;
/* Enable the interrupts. */
TACCTL0 = CCIE;
/* Start up clean. */
TACTL |= TACLR;
/* Up mode. */
TACTL |= MC_1;
}
/*-----------------------------------------------------------*/

168
portable/IAR/MSP430/portasm.h
View file

@ -1,84 +1,84 @@
/*
* FreeRTOS Kernel V10.4.3
* Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* https://www.FreeRTOS.org
* https://github.com/FreeRTOS
*
* 1 tab == 4 spaces!
*/
#ifndef PORTASM_H
#define PORTASM_H
portSAVE_CONTEXT macro
IMPORT pxCurrentTCB
IMPORT usCriticalNesting
/* Save the remaining registers. */
push r4
push r5
push r6
push r7
push r8
push r9
push r10
push r11
push r12
push r13
push r14
push r15
mov.w &usCriticalNesting, r14
push r14
mov.w &pxCurrentTCB, r12
mov.w r1, 0(r12)
endm
/*-----------------------------------------------------------*/
portRESTORE_CONTEXT macro
mov.w &pxCurrentTCB, r12
mov.w @r12, r1
pop r15
mov.w r15, &usCriticalNesting
pop r15
pop r14
pop r13
pop r12
pop r11
pop r10
pop r9
pop r8
pop r7
pop r6
pop r5
pop r4
/* The last thing on the stack will be the status register.
Ensure the power down bits are clear ready for the next
time this power down register is popped from the stack. */
bic.w #0xf0,0(SP)
reti
endm
/*-----------------------------------------------------------*/
#endif
/*
* FreeRTOS Kernel V10.4.3
* Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* https://www.FreeRTOS.org
* https://github.com/FreeRTOS
*
* 1 tab == 4 spaces!
*/
#ifndef PORTASM_H
#define PORTASM_H
portSAVE_CONTEXT macro
IMPORT pxCurrentTCB
IMPORT usCriticalNesting
/* Save the remaining registers. */
push r4
push r5
push r6
push r7
push r8
push r9
push r10
push r11
push r12
push r13
push r14
push r15
mov.w &usCriticalNesting, r14
push r14
mov.w &pxCurrentTCB, r12
mov.w r1, 0(r12)
endm
/*-----------------------------------------------------------*/
portRESTORE_CONTEXT macro
mov.w &pxCurrentTCB, r12
mov.w @r12, r1
pop r15
mov.w r15, &usCriticalNesting
pop r15
pop r14
pop r13
pop r12
pop r11
pop r10
pop r9
pop r8
pop r7
pop r6
pop r5
pop r4
/* The last thing on the stack will be the status register.
Ensure the power down bits are clear ready for the next
time this power down register is popped from the stack. */
bic.w #0xf0,0(SP)
reti
endm
/*-----------------------------------------------------------*/
#endif

212
portable/IAR/MSP430/portext.s43
View file

@ -1,106 +1,106 @@
/*
* FreeRTOS Kernel V10.4.3
* Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* https://www.FreeRTOS.org
* https://github.com/FreeRTOS
*
* 1 tab == 4 spaces!
*/
#include "FreeRTOSConfig.h"
#include "portasm.h"
IMPORT xTaskIncrementTick
IMPORT vTaskSwitchContext
IMPORT vPortSetupTimerInterrupt
EXPORT vTickISR
EXPORT vPortYield
EXPORT xPortStartScheduler
RSEG CODE
/*
* The RTOS tick ISR.
*
* If the cooperative scheduler is in use this simply increments the tick
* count.
*
* If the preemptive scheduler is in use a context switch can also occur.
*/
vTickISR:
portSAVE_CONTEXT
call #xTaskIncrementTick
cmp.w #0x0, R12
jeq SkipContextSwitch
call #vTaskSwitchContext
SkipContextSwitch:
portRESTORE_CONTEXT
/*-----------------------------------------------------------*/
/*
* Manual context switch called by the portYIELD() macro.
*/
vPortYield:
/* Mimic an interrupt by pushing the SR. */
push SR
/* Now the SR is stacked we can disable interrupts. */
dint
/* Save the context of the current task. */
portSAVE_CONTEXT
/* Switch to the highest priority task that is ready to run. */
call #vTaskSwitchContext
/* Restore the context of the new task. */
portRESTORE_CONTEXT
/*-----------------------------------------------------------*/
/*
* Start off the scheduler by initialising the RTOS tick timer, then restoring
* the context of the first task.
*/
xPortStartScheduler:
/* Setup the hardware to generate the tick. Interrupts are disabled
when this function is called. */
call #vPortSetupTimerInterrupt
/* Restore the context of the first task that is going to run. */
portRESTORE_CONTEXT
/*-----------------------------------------------------------*/
/* Install vTickISR as the timer A0 interrupt. */
ASEG
ORG 0xFFE0 + TIMERA0_VECTOR
_vTickISR_: DC16 vTickISR
END
/*
* FreeRTOS Kernel V10.4.3
* Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* https://www.FreeRTOS.org
* https://github.com/FreeRTOS
*
* 1 tab == 4 spaces!
*/
#include "FreeRTOSConfig.h"
#include "portasm.h"
IMPORT xTaskIncrementTick
IMPORT vTaskSwitchContext
IMPORT vPortSetupTimerInterrupt
EXPORT vTickISR
EXPORT vPortYield
EXPORT xPortStartScheduler
RSEG CODE
/*
* The RTOS tick ISR.
*
* If the cooperative scheduler is in use this simply increments the tick
* count.
*
* If the preemptive scheduler is in use a context switch can also occur.
*/
vTickISR:
portSAVE_CONTEXT
call #xTaskIncrementTick
cmp.w #0x0, R12
jeq SkipContextSwitch
call #vTaskSwitchContext
SkipContextSwitch:
portRESTORE_CONTEXT
/*-----------------------------------------------------------*/
/*
* Manual context switch called by the portYIELD() macro.
*/
vPortYield:
/* Mimic an interrupt by pushing the SR. */
push SR
/* Now the SR is stacked we can disable interrupts. */
dint
/* Save the context of the current task. */
portSAVE_CONTEXT
/* Switch to the highest priority task that is ready to run. */
call #vTaskSwitchContext
/* Restore the context of the new task. */
portRESTORE_CONTEXT
/*-----------------------------------------------------------*/
/*
* Start off the scheduler by initialising the RTOS tick timer, then restoring
* the context of the first task.
*/
xPortStartScheduler:
/* Setup the hardware to generate the tick. Interrupts are disabled
when this function is called. */
call #vPortSetupTimerInterrupt
/* Restore the context of the first task that is going to run. */
portRESTORE_CONTEXT
/*-----------------------------------------------------------*/
/* Install vTickISR as the timer A0 interrupt. */
ASEG
ORG 0xFFE0 + TIMERA0_VECTOR
_vTickISR_: DC16 vTickISR
END

266
portable/IAR/MSP430/portmacro.h
View file

@ -1,133 +1,133 @@
/*
* FreeRTOS Kernel V10.4.3
* Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* https://www.FreeRTOS.org
* https://github.com/FreeRTOS
*
* 1 tab == 4 spaces!
*/
#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.
*-----------------------------------------------------------
*/
/* Type definitions. */
#define portCHAR char
#define portFLOAT float
#define portDOUBLE double
#define portLONG long
#define portSHORT int
#define portSTACK_TYPE uint16_t
#define portBASE_TYPE short
typedef portSTACK_TYPE StackType_t;
typedef short BaseType_t;
typedef unsigned short UBaseType_t;
#if( configUSE_16_BIT_TICKS == 1 )
typedef uint16_t TickType_t;
#define portMAX_DELAY ( TickType_t ) 0xffff
#else
typedef uint32_t TickType_t;
#define portMAX_DELAY ( TickType_t ) 0xffffffffUL
#endif
/*-----------------------------------------------------------*/
/* Interrupt control macros. */
#define portDISABLE_INTERRUPTS() _DINT(); _NOP()
#define portENABLE_INTERRUPTS() _EINT(); _NOP()
/*-----------------------------------------------------------*/
/* Critical section control macros. */
#define portNO_CRITICAL_SECTION_NESTING ( ( uint16_t ) 0 )
#define portENTER_CRITICAL() \
{ \
extern volatile uint16_t usCriticalNesting; \
\
portDISABLE_INTERRUPTS(); \
\
/* Now interrupts are disabled usCriticalNesting can be accessed */ \
/* directly. Increment ulCriticalNesting to keep a count of how many */ \
/* times portENTER_CRITICAL() has been called. */ \
usCriticalNesting++; \
}
#define portEXIT_CRITICAL() \
{ \
extern volatile uint16_t usCriticalNesting; \
\
if( usCriticalNesting > portNO_CRITICAL_SECTION_NESTING ) \
{ \
/* Decrement the nesting count as we are leaving a critical section. */ \
usCriticalNesting--; \
\
/* If the nesting level has reached zero then interrupts should be */ \
/* re-enabled. */ \
if( usCriticalNesting == portNO_CRITICAL_SECTION_NESTING ) \
{ \
portENABLE_INTERRUPTS(); \
} \
} \
}
/*-----------------------------------------------------------*/
/* Task utilities. */
/*
* Manual context switch called by portYIELD or taskYIELD.
*/
extern void vPortYield( void );
#define portYIELD() vPortYield()
/*-----------------------------------------------------------*/
/* Hardware specifics. */
#define portBYTE_ALIGNMENT 2
#define portSTACK_GROWTH ( -1 )
#define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
#define portNOP()
#define portPOINTER_SIZE_TYPE uint16_t
/*-----------------------------------------------------------*/
/* 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 )
#if configINTERRUPT_EXAMPLE_METHOD == 2
extern void vTaskSwitchContext( void );
#define portYIELD_FROM_ISR( x ) if( x ) vTaskSwitchContext()
#endif
#endif /* PORTMACRO_H */
/*
* FreeRTOS Kernel V10.4.3
* Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* https://www.FreeRTOS.org
* https://github.com/FreeRTOS
*
* 1 tab == 4 spaces!
*/
#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.
*-----------------------------------------------------------
*/
/* Type definitions. */
#define portCHAR char
#define portFLOAT float
#define portDOUBLE double
#define portLONG long
#define portSHORT int
#define portSTACK_TYPE uint16_t
#define portBASE_TYPE short
typedef portSTACK_TYPE StackType_t;
typedef short BaseType_t;
typedef unsigned short UBaseType_t;
#if( configUSE_16_BIT_TICKS == 1 )
typedef uint16_t TickType_t;
#define portMAX_DELAY ( TickType_t ) 0xffff
#else
typedef uint32_t TickType_t;
#define portMAX_DELAY ( TickType_t ) 0xffffffffUL
#endif
/*-----------------------------------------------------------*/
/* Interrupt control macros. */
#define portDISABLE_INTERRUPTS() _DINT(); _NOP()
#define portENABLE_INTERRUPTS() _EINT(); _NOP()
/*-----------------------------------------------------------*/
/* Critical section control macros. */
#define portNO_CRITICAL_SECTION_NESTING ( ( uint16_t ) 0 )
#define portENTER_CRITICAL() \
{ \
extern volatile uint16_t usCriticalNesting; \
\
portDISABLE_INTERRUPTS(); \
\
/* Now interrupts are disabled usCriticalNesting can be accessed */ \
/* directly. Increment ulCriticalNesting to keep a count of how many */ \
/* times portENTER_CRITICAL() has been called. */ \
usCriticalNesting++; \
}
#define portEXIT_CRITICAL() \
{ \
extern volatile uint16_t usCriticalNesting; \
\
if( usCriticalNesting > portNO_CRITICAL_SECTION_NESTING ) \
{ \
/* Decrement the nesting count as we are leaving a critical section. */ \
usCriticalNesting--; \
\
/* If the nesting level has reached zero then interrupts should be */ \
/* re-enabled. */ \
if( usCriticalNesting == portNO_CRITICAL_SECTION_NESTING ) \
{ \
portENABLE_INTERRUPTS(); \
} \
} \
}
/*-----------------------------------------------------------*/
/* Task utilities. */
/*
* Manual context switch called by portYIELD or taskYIELD.
*/
extern void vPortYield( void );
#define portYIELD() vPortYield()
/*-----------------------------------------------------------*/
/* Hardware specifics. */
#define portBYTE_ALIGNMENT 2
#define portSTACK_GROWTH ( -1 )
#define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
#define portNOP()
#define portPOINTER_SIZE_TYPE uint16_t
/*-----------------------------------------------------------*/
/* 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 )
#if configINTERRUPT_EXAMPLE_METHOD == 2
extern void vTaskSwitchContext( void );
#define portYIELD_FROM_ISR( x ) if( x ) vTaskSwitchContext()
#endif
#endif /* PORTMACRO_H */