lin thou
www.freertos.org test on stm32f0
Fork of
FreeRTOS
by 
Rohit Grover
Revision 1:fc62ab66aa39, committed 2018-03-02
- Comitter:
- thoulin
- Date:
- Fri Mar 02 09:46:03 2018 +0000
- Parent:
- 0:8e57f3e9cc89
- Commit message:
- stm32f030r8 free rtos but,it can not run right.
Changed in this revision
diff -r 8e57f3e9cc89 -r fc62ab66aa39 FreeRTOSConfig.h --- a/FreeRTOSConfig.h Fri Jan 24 14:56:04 2014 +0000 +++ b/FreeRTOSConfig.h Fri Mar 02 09:46:03 2018 +0000 @@ -85,8 +85,8 @@ #define configUSE_TICK_HOOK 0 #define configCPU_CLOCK_HZ ( ( unsigned long ) SystemCoreClock ) #define configTICK_RATE_HZ ( ( portTickType ) 1000 ) -#define configMINIMAL_STACK_SIZE ( ( unsigned short ) 80 ) -#define configTOTAL_HEAP_SIZE ( ( size_t ) ( 10 * 1024 ) ) +#define configMINIMAL_STACK_SIZE ( ( unsigned short ) 64 ) +#define configTOTAL_HEAP_SIZE ( ( size_t ) ( 4096 ) ) #define configMAX_TASK_NAME_LEN ( 12 ) #define configUSE_TRACE_FACILITY 1 #define configUSE_16_BIT_TICKS 0
diff -r 8e57f3e9cc89 -r fc62ab66aa39 Source/portable/RVDS/ARM_CM0/port.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Source/portable/RVDS/ARM_CM0/port.c Fri Mar 02 09:46:03 2018 +0000
@@ -0,0 +1,340 @@
+/*
+ FreeRTOS V7.6.0 - Copyright (C) 2013 Real Time Engineers Ltd.
+ All rights reserved
+
+ VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
+
+ ***************************************************************************
+ * *
+ * FreeRTOS provides completely free yet professionally developed, *
+ * robust, strictly quality controlled, supported, and cross *
+ * platform software that has become a de facto standard. *
+ * *
+ * Help yourself get started quickly and support the FreeRTOS *
+ * project by purchasing a FreeRTOS tutorial book, reference *
+ * manual, or both from: http://www.FreeRTOS.org/Documentation *
+ * *
+ * Thank you! *
+ * *
+ ***************************************************************************
+
+ 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 modification 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.
+
+ 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. Full license text is available from the following
+ link: http://www.freertos.org/a00114.html
+
+ 1 tab == 4 spaces!
+
+ ***************************************************************************
+ * *
+ * Having a problem? Start by reading the FAQ "My application does *
+ * not run, what could be wrong?" *
+ * *
+ * http://www.FreeRTOS.org/FAQHelp.html *
+ * *
+ ***************************************************************************
+
+ http://www.FreeRTOS.org - Documentation, books, training, latest versions,
+ license and Real Time Engineers Ltd. contact details.
+
+ http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
+ including FreeRTOS+Trace - an indispensable productivity tool, a DOS
+ compatible FAT file system, and our tiny thread aware UDP/IP stack.
+
+ http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
+ Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
+ licenses offer ticketed support, indemnification and middleware.
+
+ http://www.SafeRTOS.com - High Integrity Systems also provide a safety
+ engineered and independently SIL3 certified version for use in safety and
+ mission critical applications that require provable dependability.
+
+ 1 tab == 4 spaces!
+*/
+
+/*-----------------------------------------------------------
+ * Implementation of functions defined in portable.h for the ARM CM0 port.
+ *----------------------------------------------------------*/
+
+/* Scheduler includes. */
+#include "FreeRTOS.h"
+#include "task.h"
+
+/* Constants required to manipulate the NVIC. */
+#define portNVIC_SYSTICK_CTRL ( ( volatile unsigned long *) 0xe000e010 )
+#define portNVIC_SYSTICK_LOAD ( ( volatile unsigned long *) 0xe000e014 )
+#define portNVIC_INT_CTRL ( ( volatile unsigned long *) 0xe000ed04 )
+#define portNVIC_SYSPRI2 ( ( volatile unsigned long *) 0xe000ed20 )
+#define portNVIC_SYSTICK_CLK 0x00000004
+#define portNVIC_SYSTICK_INT 0x00000002
+#define portNVIC_SYSTICK_ENABLE 0x00000001
+#define portNVIC_PENDSVSET 0x10000000
+#define portMIN_INTERRUPT_PRIORITY ( 255UL )
+#define portNVIC_PENDSV_PRI ( portMIN_INTERRUPT_PRIORITY << 16UL )
+#define portNVIC_SYSTICK_PRI ( portMIN_INTERRUPT_PRIORITY << 24UL )
+
+/* Constants required to set up the initial stack. */
+#define portINITIAL_XPSR ( 0x01000000 )
+
+/* Constants used with memory barrier intrinsics. */
+#define portSY_FULL_READ_WRITE ( 15 )
+
+/* Each task maintains its own interrupt status in the critical nesting
+variable. */
+static unsigned portBASE_TYPE uxCriticalNesting = 0xaaaaaaaa;
+
+/*
+ * Setup the timer to generate the tick interrupts.
+ */
+static void prvSetupTimerInterrupt( void );
+
+/*
+ * Exception handlers.
+ */
+void xPortPendSVHandler( void );
+void xPortSysTickHandler( void );
+void vPortSVCHandler( void );
+
+/*
+ * Start first task is a separate function so it can be tested in isolation.
+ */
+static void prvPortStartFirstTask( void );
+
+/*
+ * Used to catch tasks that attempt to return from their implementing function.
+ */
+static void prvTaskExitError( void );
+
+/*-----------------------------------------------------------*/
+
+/*
+ * See header file for description.
+ */
+portSTACK_TYPE *pxPortInitialiseStack( portSTACK_TYPE *pxTopOfStack, pdTASK_CODE pxCode, void *pvParameters )
+{
+ /* Simulate the stack frame as it would be created by a context switch
+ interrupt. */
+ pxTopOfStack--; /* Offset added to account for the way the MCU uses the stack on entry/exit of interrupts. */
+ *pxTopOfStack = portINITIAL_XPSR; /* xPSR */
+ pxTopOfStack--;
+ *pxTopOfStack = ( portSTACK_TYPE ) pxCode; /* PC */
+ pxTopOfStack--;
+ *pxTopOfStack = ( portSTACK_TYPE ) prvTaskExitError; /* LR */
+ pxTopOfStack -= 5; /* R12, R3, R2 and R1. */
+ *pxTopOfStack = ( portSTACK_TYPE ) pvParameters; /* R0 */
+ pxTopOfStack -= 8; /* R11..R4. */
+
+ return pxTopOfStack;
+}
+/*-----------------------------------------------------------*/
+
+static void prvTaskExitError( void )
+{
+ /* A function that implements a task must not exit or attempt to return to
+ its caller as there is nothing to return to. If a task wants to exit it
+ should instead call vTaskDelete( NULL ).
+
+ Artificially force an assert() to be triggered if configASSERT() is
+ defined, then stop here so application writers can catch the error. */
+ configASSERT( uxCriticalNesting == ~0UL );
+ portDISABLE_INTERRUPTS();
+ for( ;; );
+}
+/*-----------------------------------------------------------*/
+
+void vPortSVCHandler( void )
+{
+ /* This function is no longer used, but retained for backward
+ compatibility. */
+}
+/*-----------------------------------------------------------*/
+
+__asm void prvPortStartFirstTask( void )
+{
+ extern pxCurrentTCB;
+
+ PRESERVE8
+
+ /* The MSP stack is not reset as, unlike on M3/4 parts, there is no vector
+ table offset register that can be used to locate the initial stack value.
+ Not all M0 parts have the application vector table at address 0. */
+
+ ldr r3, =pxCurrentTCB /* Obtain location of pxCurrentTCB. */
+ ldr r1, [r3]
+ ldr r0, [r1] /* The first item in pxCurrentTCB is the task top of stack. */
+ adds r0, #32 /* Discard everything up to r0. */
+ msr psp, r0 /* This is now the new top of stack to use in the task. */
+ movs r0, #2 /* Switch to the psp stack. */
+ msr CONTROL, r0
+ pop {r0-r5} /* Pop the registers that are saved automatically. */
+ mov lr, r5 /* lr is now in r5. */
+ cpsie i /* The first task has its context and interrupts can be enabled. */
+ pop {pc} /* Finally, pop the PC to jump to the user defined task code. */
+
+ ALIGN
+}
+/*-----------------------------------------------------------*/
+
+/*
+ * See header file for description.
+ */
+portBASE_TYPE xPortStartScheduler( void )
+{
+ /* Make PendSV, CallSV and SysTick the same priroity as the kernel. */
+ *(portNVIC_SYSPRI2) |= portNVIC_PENDSV_PRI;
+ *(portNVIC_SYSPRI2) |= portNVIC_SYSTICK_PRI;
+
+ /* Start the timer that generates the tick ISR. Interrupts are disabled
+ here already. */
+ prvSetupTimerInterrupt();
+
+ /* Initialise the critical nesting count ready for the first task. */
+ uxCriticalNesting = 0;
+
+ /* Start the first task. */
+ prvPortStartFirstTask();
+
+ /* Should not get here! */
+ return 0;
+}
+/*-----------------------------------------------------------*/
+
+void vPortEndScheduler( void )
+{
+ /* It is unlikely that the CM0 port will require this function as there
+ is nothing to return to. */
+}
+/*-----------------------------------------------------------*/
+
+void vPortYield( void )
+{
+ /* Set a PendSV to request a context switch. */
+ *( portNVIC_INT_CTRL ) = portNVIC_PENDSVSET;
+
+ /* Barriers are normally not required but do ensure the code is completely
+ within the specified behaviour for the architecture. */
+ __dsb( portSY_FULL_READ_WRITE );
+ __isb( portSY_FULL_READ_WRITE );
+}
+/*-----------------------------------------------------------*/
+
+void vPortEnterCritical( void )
+{
+ portDISABLE_INTERRUPTS();
+ uxCriticalNesting++;
+ __dsb( portSY_FULL_READ_WRITE );
+ __isb( portSY_FULL_READ_WRITE );
+}
+/*-----------------------------------------------------------*/
+
+void vPortExitCritical( void )
+{
+ uxCriticalNesting--;
+ if( uxCriticalNesting == 0 )
+ {
+ portENABLE_INTERRUPTS();
+ }
+}
+/*-----------------------------------------------------------*/
+
+__asm unsigned long ulSetInterruptMaskFromISR( void )
+{
+ mrs r0, PRIMASK
+ cpsid i
+ bx lr
+}
+/*-----------------------------------------------------------*/
+
+__asm void vClearInterruptMaskFromISR( unsigned long ulMask )
+{
+ msr PRIMASK, r0
+ bx lr
+}
+/*-----------------------------------------------------------*/
+
+__asm void xPortPendSVHandler( void )
+{
+ extern vTaskSwitchContext
+ extern pxCurrentTCB
+
+ PRESERVE8
+
+ mrs r0, psp
+
+ ldr r3, =pxCurrentTCB /* Get the location of the current TCB. */
+ ldr r2, [r3]
+
+ subs r0, #32 /* Make space for the remaining low registers. */
+ str r0, [r2] /* Save the new top of stack. */
+ stmia r0!, {r4-r7} /* Store the low registers that are not saved automatically. */
+ mov r4, r8 /* Store the high registers. */
+ mov r5, r9
+ mov r6, r10
+ mov r7, r11
+ stmia r0!, {r4-r7}
+
+ push {r3, r14}
+ cpsid i
+ bl vTaskSwitchContext
+ cpsie i
+ pop {r2, r3} /* lr goes in r3. r2 now holds tcb pointer. */
+
+ ldr r1, [r2]
+ ldr r0, [r1] /* The first item in pxCurrentTCB is the task top of stack. */
+ adds r0, #16 /* Move to the high registers. */
+ ldmia r0!, {r4-r7} /* Pop the high registers. */
+ mov r8, r4
+ mov r9, r5
+ mov r10, r6
+ mov r11, r7
+
+ msr psp, r0 /* Remember the new top of stack for the task. */
+
+ subs r0, #32 /* Go back for the low registers that are not automatically restored. */
+ ldmia r0!, {r4-r7} /* Pop low registers. */
+
+ bx r3
+ ALIGN
+}
+/*-----------------------------------------------------------*/
+
+void xPortSysTickHandler( void )
+{
+unsigned long ulPreviousMask;
+
+ ulPreviousMask = portSET_INTERRUPT_MASK_FROM_ISR();
+ {
+ /* Increment the RTOS tick. */
+ if( xTaskIncrementTick() != pdFALSE )
+ {
+ /* Pend a context switch. */
+ *(portNVIC_INT_CTRL) = portNVIC_PENDSVSET;
+ }
+ }
+ portCLEAR_INTERRUPT_MASK_FROM_ISR( ulPreviousMask );
+}
+/*-----------------------------------------------------------*/
+
+/*
+ * Setup the systick timer to generate the tick interrupts at the required
+ * frequency.
+ */
+void prvSetupTimerInterrupt( void )
+{
+ /* Configure SysTick to interrupt at the requested rate. */
+ *(portNVIC_SYSTICK_LOAD) = ( configCPU_CLOCK_HZ / configTICK_RATE_HZ ) - 1UL;
+ *(portNVIC_SYSTICK_CTRL) = portNVIC_SYSTICK_CLK | portNVIC_SYSTICK_INT | portNVIC_SYSTICK_ENABLE;
+}
+/*-----------------------------------------------------------*/
+
diff -r 8e57f3e9cc89 -r fc62ab66aa39 Source/portable/RVDS/ARM_CM0/portmacro.h
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Source/portable/RVDS/ARM_CM0/portmacro.h Fri Mar 02 09:46:03 2018 +0000
@@ -0,0 +1,144 @@
+/*
+ FreeRTOS V7.6.0 - Copyright (C) 2013 Real Time Engineers Ltd.
+ All rights reserved
+
+ VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
+
+ ***************************************************************************
+ * *
+ * FreeRTOS provides completely free yet professionally developed, *
+ * robust, strictly quality controlled, supported, and cross *
+ * platform software that has become a de facto standard. *
+ * *
+ * Help yourself get started quickly and support the FreeRTOS *
+ * project by purchasing a FreeRTOS tutorial book, reference *
+ * manual, or both from: http://www.FreeRTOS.org/Documentation *
+ * *
+ * Thank you! *
+ * *
+ ***************************************************************************
+
+ 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 modification 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.
+
+ 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. Full license text is available from the following
+ link: http://www.freertos.org/a00114.html
+
+ 1 tab == 4 spaces!
+
+ ***************************************************************************
+ * *
+ * Having a problem? Start by reading the FAQ "My application does *
+ * not run, what could be wrong?" *
+ * *
+ * http://www.FreeRTOS.org/FAQHelp.html *
+ * *
+ ***************************************************************************
+
+ http://www.FreeRTOS.org - Documentation, books, training, latest versions,
+ license and Real Time Engineers Ltd. contact details.
+
+ http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
+ including FreeRTOS+Trace - an indispensable productivity tool, a DOS
+ compatible FAT file system, and our tiny thread aware UDP/IP stack.
+
+ http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
+ Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
+ licenses offer ticketed support, indemnification and middleware.
+
+ http://www.SafeRTOS.com - High Integrity Systems also provide a safety
+ engineered and independently SIL3 certified version for use in safety and
+ mission critical applications that require provable dependability.
+
+ 1 tab == 4 spaces!
+*/
+
+
+#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 vPortYield( void );
+#define portNVIC_INT_CTRL_REG ( * ( ( volatile unsigned long * ) 0xe000ed04 ) )
+#define portNVIC_PENDSVSET_BIT ( 1UL << 28UL )
+#define portYIELD() vPortYield()
+#define portEND_SWITCHING_ISR( xSwitchRequired ) if( xSwitchRequired ) portNVIC_INT_CTRL_REG = portNVIC_PENDSVSET_BIT
+#define portYIELD_FROM_ISR( x ) portEND_SWITCHING_ISR( x )
+/*-----------------------------------------------------------*/
+
+/* Critical section management. */
+extern void vPortEnterCritical( void );
+extern void vPortExitCritical( void );
+extern unsigned long ulSetInterruptMaskFromISR( void );
+extern void vClearInterruptMaskFromISR( unsigned long ulMask );
+
+#define portSET_INTERRUPT_MASK_FROM_ISR() ulSetInterruptMaskFromISR()
+#define portCLEAR_INTERRUPT_MASK_FROM_ISR(x) vClearInterruptMaskFromISR( x )
+#define portDISABLE_INTERRUPTS() __disable_irq()
+#define portENABLE_INTERRUPTS() __enable_irq()
+#define portENTER_CRITICAL() vPortEnterCritical()
+#define portEXIT_CRITICAL() vPortExitCritical()
+
+/*-----------------------------------------------------------*/
+
+/* 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 */
+
diff -r 8e57f3e9cc89 -r fc62ab66aa39 Source/portable/RVDS/ARM_CM3/port.c
--- a/Source/portable/RVDS/ARM_CM3/port.c Fri Jan 24 14:56:04 2014 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,696 +0,0 @@
-/*
- FreeRTOS V7.6.0 - Copyright (C) 2013 Real Time Engineers Ltd.
- All rights reserved
-
- VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
-
- ***************************************************************************
- * *
- * FreeRTOS provides completely free yet professionally developed, *
- * robust, strictly quality controlled, supported, and cross *
- * platform software that has become a de facto standard. *
- * *
- * Help yourself get started quickly and support the FreeRTOS *
- * project by purchasing a FreeRTOS tutorial book, reference *
- * manual, or both from: http://www.FreeRTOS.org/Documentation *
- * *
- * Thank you! *
- * *
- ***************************************************************************
-
- 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 modification 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.
-
- 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. Full license text is available from the following
- link: http://www.freertos.org/a00114.html
-
- 1 tab == 4 spaces!
-
- ***************************************************************************
- * *
- * Having a problem? Start by reading the FAQ "My application does *
- * not run, what could be wrong?" *
- * *
- * http://www.FreeRTOS.org/FAQHelp.html *
- * *
- ***************************************************************************
-
- http://www.FreeRTOS.org - Documentation, books, training, latest versions,
- license and Real Time Engineers Ltd. contact details.
-
- http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
- including FreeRTOS+Trace - an indispensable productivity tool, a DOS
- compatible FAT file system, and our tiny thread aware UDP/IP stack.
-
- http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
- Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
- licenses offer ticketed support, indemnification and middleware.
-
- http://www.SafeRTOS.com - High Integrity Systems also provide a safety
- engineered and independently SIL3 certified version for use in safety and
- mission critical applications that require provable dependability.
-
- 1 tab == 4 spaces!
-*/
-
-/*-----------------------------------------------------------
- * Implementation of functions defined in portable.h for the ARM CM3 port.
- *----------------------------------------------------------*/
-
-/* Scheduler includes. */
-#include "FreeRTOS.h"
-#include "task.h"
-
-#ifndef configKERNEL_INTERRUPT_PRIORITY
- #define configKERNEL_INTERRUPT_PRIORITY 255
-#endif
-
-#if configMAX_SYSCALL_INTERRUPT_PRIORITY == 0
- #error configMAX_SYSCALL_INTERRUPT_PRIORITY must not be set to 0. See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html
-#endif
-
-#ifndef configSYSTICK_CLOCK_HZ
- #define configSYSTICK_CLOCK_HZ configCPU_CLOCK_HZ
-#endif
-
-/* The __weak attribute does not work as you might expect with the Keil tools
-so the configOVERRIDE_DEFAULT_TICK_CONFIGURATION constant must be set to 1 if
-the application writer wants to provide their own implementation of
-vPortSetupTimerInterrupt(). Ensure configOVERRIDE_DEFAULT_TICK_CONFIGURATION
-is defined. */
-#ifndef configOVERRIDE_DEFAULT_TICK_CONFIGURATION
- #define configOVERRIDE_DEFAULT_TICK_CONFIGURATION 0
-#endif
-
-/* Constants required to manipulate the core. Registers first... */
-#define portNVIC_SYSTICK_CTRL_REG ( * ( ( volatile unsigned long * ) 0xe000e010 ) )
-#define portNVIC_SYSTICK_LOAD_REG ( * ( ( volatile unsigned long * ) 0xe000e014 ) )
-#define portNVIC_SYSTICK_CURRENT_VALUE_REG ( * ( ( volatile unsigned long * ) 0xe000e018 ) )
-#define portNVIC_SYSPRI2_REG ( * ( ( volatile unsigned long * ) 0xe000ed20 ) )
-/* ...then bits in the registers. */
-#define portNVIC_SYSTICK_CLK_BIT ( 1UL << 2UL )
-#define portNVIC_SYSTICK_INT_BIT ( 1UL << 1UL )
-#define portNVIC_SYSTICK_ENABLE_BIT ( 1UL << 0UL )
-#define portNVIC_SYSTICK_COUNT_FLAG_BIT ( 1UL << 16UL )
-#define portNVIC_PENDSVCLEAR_BIT ( 1UL << 27UL )
-#define portNVIC_PEND_SYSTICK_CLEAR_BIT ( 1UL << 25UL )
-
-#define portNVIC_PENDSV_PRI ( ( ( unsigned long ) configKERNEL_INTERRUPT_PRIORITY ) << 16UL )
-#define portNVIC_SYSTICK_PRI ( ( ( unsigned long ) configKERNEL_INTERRUPT_PRIORITY ) << 24UL )
-
-/* Constants required to check the validity of an interrupt priority. */
-#define portFIRST_USER_INTERRUPT_NUMBER ( 16 )
-#define portNVIC_IP_REGISTERS_OFFSET_16 ( 0xE000E3F0 )
-#define portAIRCR_REG ( * ( ( volatile unsigned long * ) 0xE000ED0C ) )
-#define portMAX_8_BIT_VALUE ( ( unsigned char ) 0xff )
-#define portTOP_BIT_OF_BYTE ( ( unsigned char ) 0x80 )
-#define portMAX_PRIGROUP_BITS ( ( unsigned char ) 7 )
-#define portPRIORITY_GROUP_MASK ( 0x07UL << 8UL )
-#define portPRIGROUP_SHIFT ( 8UL )
-
-/* Constants required to set up the initial stack. */
-#define portINITIAL_XPSR ( 0x01000000 )
-
-/* Constants used with memory barrier intrinsics. */
-#define portSY_FULL_READ_WRITE ( 15 )
-
-/* The systick is a 24-bit counter. */
-#define portMAX_24_BIT_NUMBER ( 0xffffffUL )
-
-/* A fiddle factor to estimate the number of SysTick counts that would have
-occurred while the SysTick counter is stopped during tickless idle
-calculations. */
-#define portMISSED_COUNTS_FACTOR ( 45UL )
-
-/* Each task maintains its own interrupt status in the critical nesting
-variable. */
-static unsigned portBASE_TYPE uxCriticalNesting = 0xaaaaaaaa;
-
-/*
- * Setup the timer to generate the tick interrupts. The implementation in this
- * file is weak to allow application writers to change the timer used to
- * generate the tick interrupt.
- */
-void vPortSetupTimerInterrupt( void );
-
-/*
- * Exception handlers.
- */
-void xPortPendSVHandler( void );
-void xPortSysTickHandler( void );
-void vPortSVCHandler( void );
-
-/*
- * Start first task is a separate function so it can be tested in isolation.
- */
-static void prvStartFirstTask( void );
-
-/*
- * Used to catch tasks that attempt to return from their implementing function.
- */
-static void prvTaskExitError( void );
-
-/*-----------------------------------------------------------*/
-
-/*
- * The number of SysTick increments that make up one tick period.
- */
-#if configUSE_TICKLESS_IDLE == 1
- static unsigned long ulTimerCountsForOneTick = 0;
-#endif /* configUSE_TICKLESS_IDLE */
-
-/*
- * The maximum number of tick periods that can be suppressed is limited by the
- * 24 bit resolution of the SysTick timer.
- */
-#if configUSE_TICKLESS_IDLE == 1
- static unsigned long xMaximumPossibleSuppressedTicks = 0;
-#endif /* configUSE_TICKLESS_IDLE */
-
-/*
- * Compensate for the CPU cycles that pass while the SysTick is stopped (low
- * power functionality only.
- */
-#if configUSE_TICKLESS_IDLE == 1
- static unsigned long ulStoppedTimerCompensation = 0;
-#endif /* configUSE_TICKLESS_IDLE */
-
-/*
- * Used by the portASSERT_IF_INTERRUPT_PRIORITY_INVALID() macro to ensure
- * FreeRTOS API functions are not called from interrupts that have been assigned
- * a priority above configMAX_SYSCALL_INTERRUPT_PRIORITY.
- */
-#if ( configASSERT_DEFINED == 1 )
- static unsigned char ucMaxSysCallPriority = 0;
- static unsigned long ulMaxPRIGROUPValue = 0;
- static const volatile unsigned char * const pcInterruptPriorityRegisters = ( unsigned char * ) portNVIC_IP_REGISTERS_OFFSET_16;
-#endif /* configASSERT_DEFINED */
-
-/*-----------------------------------------------------------*/
-
-/*
- * See header file for description.
- */
-portSTACK_TYPE *pxPortInitialiseStack( portSTACK_TYPE *pxTopOfStack, pdTASK_CODE pxCode, void *pvParameters )
-{
- /* Simulate the stack frame as it would be created by a context switch
- interrupt. */
- pxTopOfStack--; /* Offset added to account for the way the MCU uses the stack on entry/exit of interrupts. */
- *pxTopOfStack = portINITIAL_XPSR; /* xPSR */
- pxTopOfStack--;
- *pxTopOfStack = ( portSTACK_TYPE ) pxCode; /* PC */
- pxTopOfStack--;
- *pxTopOfStack = ( portSTACK_TYPE ) prvTaskExitError; /* LR */
-
- pxTopOfStack -= 5; /* R12, R3, R2 and R1. */
- *pxTopOfStack = ( portSTACK_TYPE ) pvParameters; /* R0 */
- pxTopOfStack -= 8; /* R11, R10, R9, R8, R7, R6, R5 and R4. */
-
- return pxTopOfStack;
-}
-/*-----------------------------------------------------------*/
-
-static void prvTaskExitError( void )
-{
- /* A function that implements a task must not exit or attempt to return to
- its caller as there is nothing to return to. If a task wants to exit it
- should instead call vTaskDelete( NULL ).
-
- Artificially force an assert() to be triggered if configASSERT() is
- defined, then stop here so application writers can catch the error. */
- configASSERT( uxCriticalNesting == ~0UL );
- portDISABLE_INTERRUPTS();
- for( ;; );
-}
-/*-----------------------------------------------------------*/
-
-__asm void vPortSVCHandler( void )
-{
- PRESERVE8
-
- ldr r3, =pxCurrentTCB /* Restore the context. */
- ldr r1, [r3] /* Use pxCurrentTCBConst to get the pxCurrentTCB address. */
- ldr r0, [r1] /* The first item in pxCurrentTCB is the task top of stack. */
- ldmia r0!, {r4-r11} /* Pop the registers that are not automatically saved on exception entry and the critical nesting count. */
- msr psp, r0 /* Restore the task stack pointer. */
- mov r0, #0
- msr basepri, r0
- orr r14, #0xd
- bx r14
-}
-/*-----------------------------------------------------------*/
-
-__asm void prvStartFirstTask( void )
-{
- PRESERVE8
-
- /* 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
- /* Globally enable interrupts. */
- cpsie i
- /* Call SVC to start the first task. */
- svc 0
- nop
-}
-/*-----------------------------------------------------------*/
-
-/*
- * See header file for description.
- */
-portBASE_TYPE xPortStartScheduler( void )
-{
- #if( configASSERT_DEFINED == 1 )
- {
- volatile unsigned long ulOriginalPriority;
- volatile char * const pcFirstUserPriorityRegister = ( char * ) ( portNVIC_IP_REGISTERS_OFFSET_16 + portFIRST_USER_INTERRUPT_NUMBER );
- volatile unsigned char ucMaxPriorityValue;
-
- /* Determine the maximum priority from which ISR safe FreeRTOS API
- functions can be called. ISR safe functions are those that end in
- "FromISR". FreeRTOS maintains separate thread and ISR API functions to
- ensure interrupt entry is as fast and simple as possible.
-
- Save the interrupt priority value that is about to be clobbered. */
- ulOriginalPriority = *pcFirstUserPriorityRegister;
-
- /* Determine the number of priority bits available. First write to all
- possible bits. */
- *pcFirstUserPriorityRegister = portMAX_8_BIT_VALUE;
-
- /* Read the value back to see how many bits stuck. */
- ucMaxPriorityValue = *pcFirstUserPriorityRegister;
-
- /* Use the same mask on the maximum system call priority. */
- ucMaxSysCallPriority = configMAX_SYSCALL_INTERRUPT_PRIORITY & ucMaxPriorityValue;
-
- /* Calculate the maximum acceptable priority group value for the number
- of bits read back. */
- ulMaxPRIGROUPValue = portMAX_PRIGROUP_BITS;
- while( ( ucMaxPriorityValue & portTOP_BIT_OF_BYTE ) == portTOP_BIT_OF_BYTE )
- {
- ulMaxPRIGROUPValue--;
- ucMaxPriorityValue <<= ( unsigned char ) 0x01;
- }
-
- /* Shift the priority group value back to its position within the AIRCR
- register. */
- ulMaxPRIGROUPValue <<= portPRIGROUP_SHIFT;
- ulMaxPRIGROUPValue &= portPRIORITY_GROUP_MASK;
-
- /* Restore the clobbered interrupt priority register to its original
- value. */
- *pcFirstUserPriorityRegister = ulOriginalPriority;
- }
- #endif /* conifgASSERT_DEFINED */
-
- /* Make PendSV and SysTick the lowest priority interrupts. */
- portNVIC_SYSPRI2_REG |= portNVIC_PENDSV_PRI;
- portNVIC_SYSPRI2_REG |= portNVIC_SYSTICK_PRI;
-
- /* Start the timer that generates the tick ISR. Interrupts are disabled
- here already. */
- vPortSetupTimerInterrupt();
-
- /* Initialise the critical nesting count ready for the first task. */
- uxCriticalNesting = 0;
-
- /* Start the first task. */
- prvStartFirstTask();
-
- /* Should not get here! */
- return 0;
-}
-/*-----------------------------------------------------------*/
-
-void vPortEndScheduler( void )
-{
- /* It is unlikely that the CM3 port will require this function as there
- is nothing to return to. */
-}
-/*-----------------------------------------------------------*/
-
-void vPortYield( void )
-{
- /* Set a PendSV to request a context switch. */
- portNVIC_INT_CTRL_REG = portNVIC_PENDSVSET_BIT;
-
- /* Barriers are normally not required but do ensure the code is completely
- within the specified behaviour for the architecture. */
- __dsb( portSY_FULL_READ_WRITE );
- __isb( portSY_FULL_READ_WRITE );
-}
-/*-----------------------------------------------------------*/
-
-void vPortEnterCritical( void )
-{
- portDISABLE_INTERRUPTS();
- uxCriticalNesting++;
- __dsb( portSY_FULL_READ_WRITE );
- __isb( portSY_FULL_READ_WRITE );
-}
-/*-----------------------------------------------------------*/
-
-void vPortExitCritical( void )
-{
- uxCriticalNesting--;
- if( uxCriticalNesting == 0 )
- {
- portENABLE_INTERRUPTS();
- }
-}
-/*-----------------------------------------------------------*/
-
-__asm void xPortPendSVHandler( void )
-{
- extern uxCriticalNesting;
- extern pxCurrentTCB;
- extern vTaskSwitchContext;
-
- PRESERVE8
-
- mrs r0, psp
-
- ldr r3, =pxCurrentTCB /* Get the location of the current TCB. */
- ldr r2, [r3]
-
- stmdb r0!, {r4-r11} /* Save the remaining registers. */
- str r0, [r2] /* Save the new top of stack into the first member of the TCB. */
-
- stmdb sp!, {r3, r14}
- mov r0, #configMAX_SYSCALL_INTERRUPT_PRIORITY
- msr basepri, r0
- bl vTaskSwitchContext
- mov r0, #0
- msr basepri, r0
- ldmia sp!, {r3, r14}
-
- ldr r1, [r3]
- ldr r0, [r1] /* The first item in pxCurrentTCB is the task top of stack. */
- ldmia r0!, {r4-r11} /* Pop the registers and the critical nesting count. */
- msr psp, r0
- bx r14
- nop
-}
-/*-----------------------------------------------------------*/
-
-void xPortSysTickHandler( void )
-{
- /* The SysTick runs at the lowest interrupt priority, so when this interrupt
- executes all interrupts must be unmasked. There is therefore no need to
- save and then restore the interrupt mask value as its value is already
- known. */
- ( void ) portSET_INTERRUPT_MASK_FROM_ISR();
- {
- /* Increment the RTOS tick. */
- if( xTaskIncrementTick() != pdFALSE )
- {
- /* A context switch is required. Context switching is performed in
- the PendSV interrupt. Pend the PendSV interrupt. */
- portNVIC_INT_CTRL_REG = portNVIC_PENDSVSET_BIT;
- }
- }
- portCLEAR_INTERRUPT_MASK_FROM_ISR( 0 );
-}
-/*-----------------------------------------------------------*/
-
-#if configUSE_TICKLESS_IDLE == 1
-
- __weak void vPortSuppressTicksAndSleep( portTickType xExpectedIdleTime )
- {
- unsigned long ulReloadValue, ulCompleteTickPeriods, ulCompletedSysTickDecrements;
- portTickType xModifiableIdleTime;
-
- /* Make sure the SysTick reload value does not overflow the counter. */
- if( xExpectedIdleTime > xMaximumPossibleSuppressedTicks )
- {
- xExpectedIdleTime = xMaximumPossibleSuppressedTicks;
- }
-
- /* Stop the SysTick momentarily. The time the SysTick is stopped for
- is accounted for as best it can be, but using the tickless mode will
- inevitably result in some tiny drift of the time maintained by the
- kernel with respect to calendar time. */
- portNVIC_SYSTICK_CTRL_REG = portNVIC_SYSTICK_CLK_BIT | portNVIC_SYSTICK_INT_BIT;
-
- /* Calculate the reload value required to wait xExpectedIdleTime
- tick periods. -1 is used because this code will execute part way
- through one of the tick periods. */
- ulReloadValue = portNVIC_SYSTICK_CURRENT_VALUE_REG + ( ulTimerCountsForOneTick * ( xExpectedIdleTime - 1UL ) );
- if( ulReloadValue > ulStoppedTimerCompensation )
- {
- ulReloadValue -= ulStoppedTimerCompensation;
- }
-
- /* Enter a critical section but don't use the taskENTER_CRITICAL()
- method as that will mask interrupts that should exit sleep mode. */
- __disable_irq();
-
- /* If a context switch is pending or a task is waiting for the scheduler
- to be unsuspended then abandon the low power entry. */
- if( eTaskConfirmSleepModeStatus() == eAbortSleep )
- {
- /* Restart from whatever is left in the count register to complete
- this tick period. */
- portNVIC_SYSTICK_LOAD_REG = portNVIC_SYSTICK_CURRENT_VALUE_REG;
-
- /* Restart SysTick. */
- portNVIC_SYSTICK_CTRL_REG = portNVIC_SYSTICK_CLK_BIT | portNVIC_SYSTICK_INT_BIT | portNVIC_SYSTICK_ENABLE_BIT;
-
- /* Reset the reload register to the value required for normal tick
- periods. */
- portNVIC_SYSTICK_LOAD_REG = ulTimerCountsForOneTick - 1UL;
-
- /* Re-enable interrupts - see comments above __disable_irq() call
- above. */
- __enable_irq();
- }
- else
- {
- /* Set the new reload value. */
- portNVIC_SYSTICK_LOAD_REG = ulReloadValue;
-
- /* Clear the SysTick count flag and set the count value back to
- zero. */
- portNVIC_SYSTICK_CURRENT_VALUE_REG = 0UL;
-
- /* Restart SysTick. */
- portNVIC_SYSTICK_CTRL_REG = portNVIC_SYSTICK_CLK_BIT | portNVIC_SYSTICK_INT_BIT | portNVIC_SYSTICK_ENABLE_BIT;
-
- /* Sleep until something happens. configPRE_SLEEP_PROCESSING() can
- set its parameter to 0 to indicate that its implementation contains
- its own wait for interrupt or wait for event instruction, and so wfi
- should not be executed again. However, the original expected idle
- time variable must remain unmodified, so a copy is taken. */
- xModifiableIdleTime = xExpectedIdleTime;
- configPRE_SLEEP_PROCESSING( xModifiableIdleTime );
- if( xModifiableIdleTime > 0 )
- {
- __dsb( portSY_FULL_READ_WRITE );
- __wfi();
- __isb( portSY_FULL_READ_WRITE );
- }
- configPOST_SLEEP_PROCESSING( xExpectedIdleTime );
-
- /* Stop SysTick. Again, the time the SysTick is stopped for is
- accounted for as best it can be, but using the tickless mode will
- inevitably result in some tiny drift of the time maintained by the
- kernel with respect to calendar time. */
- portNVIC_SYSTICK_CTRL_REG = portNVIC_SYSTICK_CLK_BIT | portNVIC_SYSTICK_INT_BIT;
-
- /* Re-enable interrupts - see comments above __disable_irq() call
- above. */
- __enable_irq();
-
- if( ( portNVIC_SYSTICK_CTRL_REG & portNVIC_SYSTICK_COUNT_FLAG_BIT ) != 0 )
- {
- unsigned long ulCalculatedLoadValue;
-
- /* The tick interrupt has already executed, and the SysTick
- count reloaded with ulReloadValue. Reset the
- portNVIC_SYSTICK_LOAD_REG with whatever remains of this tick
- period. */
- ulCalculatedLoadValue = ( ulTimerCountsForOneTick - 1UL ) - ( ulReloadValue - portNVIC_SYSTICK_CURRENT_VALUE_REG );
-
- /* Don't allow a tiny value, or values that have somehow
- underflowed because the post sleep hook did something
- that took too long. */
- if( ( ulCalculatedLoadValue < ulStoppedTimerCompensation ) || ( ulCalculatedLoadValue > ulTimerCountsForOneTick ) )
- {
- ulCalculatedLoadValue = ( ulTimerCountsForOneTick - 1UL );
- }
-
- portNVIC_SYSTICK_LOAD_REG = ulCalculatedLoadValue;
-
- /* The tick interrupt handler will already have pended the tick
- processing in the kernel. As the pending tick will be
- processed as soon as this function exits, the tick value
- maintained by the tick is stepped forward by one less than the
- time spent waiting. */
- ulCompleteTickPeriods = xExpectedIdleTime - 1UL;
- }
- else
- {
- /* Something other than the tick interrupt ended the sleep.
- Work out how long the sleep lasted rounded to complete tick
- periods (not the ulReload value which accounted for part
- ticks). */
- ulCompletedSysTickDecrements = ( xExpectedIdleTime * ulTimerCountsForOneTick ) - portNVIC_SYSTICK_CURRENT_VALUE_REG;
-
- /* How many complete tick periods passed while the processor
- was waiting? */
- ulCompleteTickPeriods = ulCompletedSysTickDecrements / ulTimerCountsForOneTick;
-
- /* The reload value is set to whatever fraction of a single tick
- period remains. */
- portNVIC_SYSTICK_LOAD_REG = ( ( ulCompleteTickPeriods + 1 ) * ulTimerCountsForOneTick ) - ulCompletedSysTickDecrements;
- }
-
- /* Restart SysTick so it runs from portNVIC_SYSTICK_LOAD_REG
- again, then set portNVIC_SYSTICK_LOAD_REG back to its standard
- value. The critical section is used to ensure the tick interrupt
- can only execute once in the case that the reload register is near
- zero. */
- portNVIC_SYSTICK_CURRENT_VALUE_REG = 0UL;
- portENTER_CRITICAL();
- {
- portNVIC_SYSTICK_CTRL_REG = portNVIC_SYSTICK_CLK_BIT | portNVIC_SYSTICK_INT_BIT | portNVIC_SYSTICK_ENABLE_BIT;
- vTaskStepTick( ulCompleteTickPeriods );
- portNVIC_SYSTICK_LOAD_REG = ulTimerCountsForOneTick - 1UL;
- }
- portEXIT_CRITICAL();
- }
- }
-
-#endif /* #if configUSE_TICKLESS_IDLE */
-
-/*-----------------------------------------------------------*/
-
-/*
- * Setup the SysTick timer to generate the tick interrupts at the required
- * frequency.
- */
-#if configOVERRIDE_DEFAULT_TICK_CONFIGURATION == 0
-
- void vPortSetupTimerInterrupt( void )
- {
- /* Calculate the constants required to configure the tick interrupt. */
- #if configUSE_TICKLESS_IDLE == 1
- {
- ulTimerCountsForOneTick = ( configSYSTICK_CLOCK_HZ / configTICK_RATE_HZ );
- xMaximumPossibleSuppressedTicks = portMAX_24_BIT_NUMBER / ulTimerCountsForOneTick;
- ulStoppedTimerCompensation = portMISSED_COUNTS_FACTOR / ( configCPU_CLOCK_HZ / configSYSTICK_CLOCK_HZ );
- }
- #endif /* configUSE_TICKLESS_IDLE */
-
- /* Configure SysTick to interrupt at the requested rate. */
- portNVIC_SYSTICK_LOAD_REG = ( configSYSTICK_CLOCK_HZ / configTICK_RATE_HZ ) - 1UL;;
- portNVIC_SYSTICK_CTRL_REG = portNVIC_SYSTICK_CLK_BIT | portNVIC_SYSTICK_INT_BIT | portNVIC_SYSTICK_ENABLE_BIT;
- }
-
-#endif /* configOVERRIDE_DEFAULT_TICK_CONFIGURATION */
-/*-----------------------------------------------------------*/
-
-__asm unsigned long ulPortSetInterruptMask( void )
-{
- PRESERVE8
-
- mrs r0, basepri
- mov r1, #configMAX_SYSCALL_INTERRUPT_PRIORITY
- msr basepri, r1
- bx r14
-}
-/*-----------------------------------------------------------*/
-
-__asm void vPortClearInterruptMask( unsigned long ulNewMask )
-{
- PRESERVE8
-
- msr basepri, r0
- bx r14
-}
-/*-----------------------------------------------------------*/
-
-__asm unsigned long vPortGetIPSR( void )
-{
- PRESERVE8
-
- mrs r0, ipsr
- bx r14
-}
-/*-----------------------------------------------------------*/
-
-#if( configASSERT_DEFINED == 1 )
-
- void vPortValidateInterruptPriority( void )
- {
- unsigned long ulCurrentInterrupt;
- unsigned char ucCurrentPriority;
-
- /* Obtain the number of the currently executing interrupt. */
- ulCurrentInterrupt = vPortGetIPSR();
-
- /* Is the interrupt number a user defined interrupt? */
- if( ulCurrentInterrupt >= portFIRST_USER_INTERRUPT_NUMBER )
- {
- /* Look up the interrupt's priority. */
- ucCurrentPriority = pcInterruptPriorityRegisters[ ulCurrentInterrupt ];
-
- /* The following assertion will fail if a service routine (ISR) for
- an interrupt that has been assigned a priority above
- configMAX_SYSCALL_INTERRUPT_PRIORITY calls an ISR safe FreeRTOS API
- function. ISR safe FreeRTOS API functions must *only* be called
- from interrupts that have been assigned a priority at or below
- configMAX_SYSCALL_INTERRUPT_PRIORITY.
-
- Numerically low interrupt priority numbers represent logically high
- interrupt priorities, therefore the priority of the interrupt must
- be set to a value equal to or numerically *higher* than
- configMAX_SYSCALL_INTERRUPT_PRIORITY.
-
- Interrupts that use the FreeRTOS API must not be left at their
- default priority of zero as that is the highest possible priority,
- which is guaranteed to be above configMAX_SYSCALL_INTERRUPT_PRIORITY,
- and therefore also guaranteed to be invalid.
-
- FreeRTOS maintains separate thread and ISR API functions to ensure
- interrupt entry is as fast and simple as possible.
-
- The following links provide detailed information:
- http://www.freertos.org/RTOS-Cortex-M3-M4.html
- http://www.freertos.org/FAQHelp.html */
- configASSERT( ucCurrentPriority >= ucMaxSysCallPriority );
- }
-
- /* Priority grouping: The interrupt controller (NVIC) allows the bits
- that define each interrupt's priority to be split between bits that
- define the interrupt's pre-emption priority bits and bits that define
- the interrupt's sub-priority. For simplicity all bits must be defined
- to be pre-emption priority bits. The following assertion will fail if
- this is not the case (if some bits represent a sub-priority).
-
- If the application only uses CMSIS libraries for interrupt
- configuration then the correct setting can be achieved on all Cortex-M
- devices by calling NVIC_SetPriorityGrouping( 0 ); before starting the
- scheduler. Note however that some vendor specific peripheral libraries
- assume a non-zero priority group setting, in which cases using a value
- of zero will result in unpredicable behaviour. */
- configASSERT( ( portAIRCR_REG & portPRIORITY_GROUP_MASK ) <= ulMaxPRIGROUPValue );
- }
-
-#endif /* configASSERT_DEFINED */
-
-
diff -r 8e57f3e9cc89 -r fc62ab66aa39 Source/portable/RVDS/ARM_CM3/portmacro.h
--- a/Source/portable/RVDS/ARM_CM3/portmacro.h Fri Jan 24 14:56:04 2014 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,177 +0,0 @@
-/*
- FreeRTOS V7.6.0 - Copyright (C) 2013 Real Time Engineers Ltd.
- All rights reserved
-
- VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
-
- ***************************************************************************
- * *
- * FreeRTOS provides completely free yet professionally developed, *
- * robust, strictly quality controlled, supported, and cross *
- * platform software that has become a de facto standard. *
- * *
- * Help yourself get started quickly and support the FreeRTOS *
- * project by purchasing a FreeRTOS tutorial book, reference *
- * manual, or both from: http://www.FreeRTOS.org/Documentation *
- * *
- * Thank you! *
- * *
- ***************************************************************************
-
- 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 modification 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.
-
- 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. Full license text is available from the following
- link: http://www.freertos.org/a00114.html
-
- 1 tab == 4 spaces!
-
- ***************************************************************************
- * *
- * Having a problem? Start by reading the FAQ "My application does *
- * not run, what could be wrong?" *
- * *
- * http://www.FreeRTOS.org/FAQHelp.html *
- * *
- ***************************************************************************
-
- http://www.FreeRTOS.org - Documentation, books, training, latest versions,
- license and Real Time Engineers Ltd. contact details.
-
- http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
- including FreeRTOS+Trace - an indispensable productivity tool, a DOS
- compatible FAT file system, and our tiny thread aware UDP/IP stack.
-
- http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
- Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
- licenses offer ticketed support, indemnification and middleware.
-
- http://www.SafeRTOS.com - High Integrity Systems also provide a safety
- engineered and independently SIL3 certified version for use in safety and
- mission critical applications that require provable dependability.
-
- 1 tab == 4 spaces!
-*/
-
-
-#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 vPortYield( void );
-#define portNVIC_INT_CTRL_REG ( * ( ( volatile unsigned long * ) 0xe000ed04 ) )
-#define portNVIC_PENDSVSET_BIT ( 1UL << 28UL )
-#define portYIELD() vPortYield()
-#define portEND_SWITCHING_ISR( xSwitchRequired ) if( xSwitchRequired ) portNVIC_INT_CTRL_REG = portNVIC_PENDSVSET_BIT
-#define portYIELD_FROM_ISR( x ) portEND_SWITCHING_ISR( x )
-/*-----------------------------------------------------------*/
-
-/* Critical section management. */
-extern unsigned long ulPortSetInterruptMask( void );
-extern void vPortClearInterruptMask( unsigned long ulNewMask );
-extern void vPortEnterCritical( void );
-extern void vPortExitCritical( void );
-
-#define portDISABLE_INTERRUPTS() ulPortSetInterruptMask()
-#define portENABLE_INTERRUPTS() vPortClearInterruptMask( 0 )
-#define portENTER_CRITICAL() vPortEnterCritical()
-#define portEXIT_CRITICAL() vPortExitCritical()
-#define portSET_INTERRUPT_MASK_FROM_ISR() ulPortSetInterruptMask()
-#define portCLEAR_INTERRUPT_MASK_FROM_ISR(x) vPortClearInterruptMask(x)
-/*-----------------------------------------------------------*/
-
-/* Tickless idle/low power functionality. */
-#ifndef portSUPPRESS_TICKS_AND_SLEEP
- extern void vPortSuppressTicksAndSleep( portTickType xExpectedIdleTime );
- #define portSUPPRESS_TICKS_AND_SLEEP( xExpectedIdleTime ) vPortSuppressTicksAndSleep( xExpectedIdleTime )
-#endif
-/*-----------------------------------------------------------*/
-
-/* Port specific optimisations. */
-#if configUSE_PORT_OPTIMISED_TASK_SELECTION == 1
-
- /* Check the configuration. */
- #if( configMAX_PRIORITIES > 32 )
- #error configUSE_PORT_OPTIMISED_TASK_SELECTION can only be set to 1 when configMAX_PRIORITIES is less than or equal to 32. It is very rare that a system requires more than 10 to 15 difference priorities as tasks that share a priority will time slice.
- #endif
-
- /* Store/clear the ready priorities in a bit map. */
- #define portRECORD_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) |= ( 1UL << ( uxPriority ) )
- #define portRESET_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) &= ~( 1UL << ( uxPriority ) )
-
- /*-----------------------------------------------------------*/
-
- #define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities ) uxTopPriority = ( 31 - __clz( ( uxReadyPriorities ) ) )
-
-#endif /* taskRECORD_READY_PRIORITY */
-/*-----------------------------------------------------------*/
-
-/* Task function macros as described on the FreeRTOS.org WEB site. These are
-not necessary for to use this port. They are defined so the common demo files
-(which build with all the ports) will build. */
-#define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )
-#define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )
-/*-----------------------------------------------------------*/
-
-#ifdef configASSERT
- void vPortValidateInterruptPriority( void );
- #define portASSERT_IF_INTERRUPT_PRIORITY_INVALID() vPortValidateInterruptPriority()
-#endif
-
-/* portNOP() is not required by this port. */
-#define portNOP()
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* PORTMACRO_H */
-