FreeRTOS_on_mbed_v1 - Please see my note book http://mbed.org/users/ken…

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Please see my note book http://mbed.org/users/kenjiArai/notebook/freertos-on-mbed-board-with-mbed-cloud-ide--never-/

This is too old.
Below is another FreeRTOS on mbed.
http://developer.mbed.org/users/rgrover1/code/FreeRTOS/
I don't know it works well or not.
I have not evaluated it.

FreeRTOS/Source/portable/GCC/ARM_CM3/port.c@0:d4960fcea8ff, 2011-01-01 (annotated)

Committer:: kenjiArai
Date:: Sat Jan 01 11:17:45 2011 +0000
Revision:: 0:d4960fcea8ff

Who changed what in which revision?

User	Revision	Line number	New contents of line
kenjiArai	0:d4960fcea8ff	1	/*
kenjiArai	0:d4960fcea8ff	2	FreeRTOS V6.0.3 - Copyright (C) 2010 Real Time Engineers Ltd.
kenjiArai	0:d4960fcea8ff	3
kenjiArai	0:d4960fcea8ff	4	***************************************************************************
kenjiArai	0:d4960fcea8ff	5	* *
kenjiArai	0:d4960fcea8ff	6	* If you are: *
kenjiArai	0:d4960fcea8ff	7	* *
kenjiArai	0:d4960fcea8ff	8	* + New to FreeRTOS, *
kenjiArai	0:d4960fcea8ff	9	* + Wanting to learn FreeRTOS or multitasking in general quickly *
kenjiArai	0:d4960fcea8ff	10	* + Looking for basic training, *
kenjiArai	0:d4960fcea8ff	11	* + Wanting to improve your FreeRTOS skills and productivity *
kenjiArai	0:d4960fcea8ff	12	* *
kenjiArai	0:d4960fcea8ff	13	* then take a look at the FreeRTOS eBook *
kenjiArai	0:d4960fcea8ff	14	* *
kenjiArai	0:d4960fcea8ff	15	* "Using the FreeRTOS Real Time Kernel - a Practical Guide" *
kenjiArai	0:d4960fcea8ff	16	* http://www.FreeRTOS.org/Documentation *
kenjiArai	0:d4960fcea8ff	17	* *
kenjiArai	0:d4960fcea8ff	18	* A pdf reference manual is also available. Both are usually delivered *
kenjiArai	0:d4960fcea8ff	19	* to your inbox within 20 minutes to two hours when purchased between 8am *
kenjiArai	0:d4960fcea8ff	20	* and 8pm GMT (although please allow up to 24 hours in case of *
kenjiArai	0:d4960fcea8ff	21	* exceptional circumstances). Thank you for your support! *
kenjiArai	0:d4960fcea8ff	22	* *
kenjiArai	0:d4960fcea8ff	23	***************************************************************************
kenjiArai	0:d4960fcea8ff	24
kenjiArai	0:d4960fcea8ff	25	This file is part of the FreeRTOS distribution.
kenjiArai	0:d4960fcea8ff	26
kenjiArai	0:d4960fcea8ff	27	FreeRTOS is free software; you can redistribute it and/or modify it under
kenjiArai	0:d4960fcea8ff	28	the terms of the GNU General Public License (version 2) as published by the
kenjiArai	0:d4960fcea8ff	29	Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
kenjiArai	0:d4960fcea8ff	30	*NOTE* The exception to the GPL is included to allow you to distribute
kenjiArai	0:d4960fcea8ff	31	a combined work that includes FreeRTOS without being obliged to provide the
kenjiArai	0:d4960fcea8ff	32	source code for proprietary components outside of the FreeRTOS kernel.
kenjiArai	0:d4960fcea8ff	33	FreeRTOS is distributed in the hope that it will be useful, but WITHOUT
kenjiArai	0:d4960fcea8ff	34	ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
kenjiArai	0:d4960fcea8ff	35	FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
kenjiArai	0:d4960fcea8ff	36	more details. You should have received a copy of the GNU General Public
kenjiArai	0:d4960fcea8ff	37	License and the FreeRTOS license exception along with FreeRTOS; if not it
kenjiArai	0:d4960fcea8ff	38	can be viewed here: http://www.freertos.org/a00114.html and also obtained
kenjiArai	0:d4960fcea8ff	39	by writing to Richard Barry, contact details for whom are available on the
kenjiArai	0:d4960fcea8ff	40	FreeRTOS WEB site.
kenjiArai	0:d4960fcea8ff	41
kenjiArai	0:d4960fcea8ff	42	1 tab == 4 spaces!
kenjiArai	0:d4960fcea8ff	43
kenjiArai	0:d4960fcea8ff	44	http://www.FreeRTOS.org - Documentation, latest information, license and
kenjiArai	0:d4960fcea8ff	45	contact details.
kenjiArai	0:d4960fcea8ff	46
kenjiArai	0:d4960fcea8ff	47	http://www.SafeRTOS.com - A version that is certified for use in safety
kenjiArai	0:d4960fcea8ff	48	critical systems.
kenjiArai	0:d4960fcea8ff	49
kenjiArai	0:d4960fcea8ff	50	http://www.OpenRTOS.com - Commercial support, development, porting,
kenjiArai	0:d4960fcea8ff	51	licensing and training services.
kenjiArai	0:d4960fcea8ff	52	*/
kenjiArai	0:d4960fcea8ff	53
kenjiArai	0:d4960fcea8ff	54	/*-----------------------------------------------------------
kenjiArai	0:d4960fcea8ff	55	* Implementation of functions defined in portable.h for the ARM CM3 port.
kenjiArai	0:d4960fcea8ff	56	----------------------------------------------------------/
kenjiArai	0:d4960fcea8ff	57
kenjiArai	0:d4960fcea8ff	58	// Modified by Kenji Arai / JH1PJL, October 30th,2010
kenjiArai	0:d4960fcea8ff	59	// Some functions go to port_asm.c
kenjiArai	0:d4960fcea8ff	60
kenjiArai	0:d4960fcea8ff	61	/* Scheduler includes. */
kenjiArai	0:d4960fcea8ff	62	#include "FreeRTOS.h"
kenjiArai	0:d4960fcea8ff	63	#include "task.h"
kenjiArai	0:d4960fcea8ff	64
kenjiArai	0:d4960fcea8ff	65	/* For backward compatibility, ensure configKERNEL_INTERRUPT_PRIORITY is
kenjiArai	0:d4960fcea8ff	66	defined. The value should also ensure backward compatibility.
kenjiArai	0:d4960fcea8ff	67	FreeRTOS.org versions prior to V4.4.0 did not include this definition. */
kenjiArai	0:d4960fcea8ff	68	#ifndef configKERNEL_INTERRUPT_PRIORITY
kenjiArai	0:d4960fcea8ff	69	#define configKERNEL_INTERRUPT_PRIORITY 255
kenjiArai	0:d4960fcea8ff	70	#endif
kenjiArai	0:d4960fcea8ff	71
kenjiArai	0:d4960fcea8ff	72	/* Constants required to manipulate the NVIC. */
kenjiArai	0:d4960fcea8ff	73	#define portNVIC_SYSTICK_CTRL ( ( volatile unsigned long *) 0xe000e010 )
kenjiArai	0:d4960fcea8ff	74	#define portNVIC_SYSTICK_LOAD ( ( volatile unsigned long *) 0xe000e014 )
kenjiArai	0:d4960fcea8ff	75	#define portNVIC_INT_CTRL ( ( volatile unsigned long *) 0xe000ed04 )
kenjiArai	0:d4960fcea8ff	76	#define portNVIC_SYSPRI2 ( ( volatile unsigned long *) 0xe000ed20 )
kenjiArai	0:d4960fcea8ff	77	#define portNVIC_SYSTICK_CLK 0x00000004
kenjiArai	0:d4960fcea8ff	78	#define portNVIC_SYSTICK_INT 0x00000002
kenjiArai	0:d4960fcea8ff	79	#define portNVIC_SYSTICK_ENABLE 0x00000001
kenjiArai	0:d4960fcea8ff	80	#define portNVIC_PENDSVSET 0x10000000
kenjiArai	0:d4960fcea8ff	81	#define portNVIC_PENDSV_PRI ( ( ( unsigned long ) configKERNEL_INTERRUPT_PRIORITY ) << 16 )
kenjiArai	0:d4960fcea8ff	82	#define portNVIC_SYSTICK_PRI ( ( ( unsigned long ) configKERNEL_INTERRUPT_PRIORITY ) << 24 )
kenjiArai	0:d4960fcea8ff	83
kenjiArai	0:d4960fcea8ff	84	/* Constants required to set up the initial stack. */
kenjiArai	0:d4960fcea8ff	85	#define portINITIAL_XPSR ( 0x01000000 )
kenjiArai	0:d4960fcea8ff	86
kenjiArai	0:d4960fcea8ff	87	/* The priority used by the kernel is assigned to a variable to make access
kenjiArai	0:d4960fcea8ff	88	from inline assembler easier. */
kenjiArai	0:d4960fcea8ff	89	//const unsigned long ulKernelPriority = configKERNEL_INTERRUPT_PRIORITY;
kenjiArai	0:d4960fcea8ff	90
kenjiArai	0:d4960fcea8ff	91	/* Each task maintains its own interrupt status in the critical nesting
kenjiArai	0:d4960fcea8ff	92	variable. */
kenjiArai	0:d4960fcea8ff	93	#if 0
kenjiArai	0:d4960fcea8ff	94	static unsigned portBASE_TYPE uxCriticalNesting = 0xaaaaaaaa;
kenjiArai	0:d4960fcea8ff	95	#else
kenjiArai	0:d4960fcea8ff	96	unsigned portBASE_TYPE uxCriticalNesting = 0xaaaaaaaa;
kenjiArai	0:d4960fcea8ff	97	#endif
kenjiArai	0:d4960fcea8ff	98	/*
kenjiArai	0:d4960fcea8ff	99	* Setup the timer to generate the tick interrupts.
kenjiArai	0:d4960fcea8ff	100	*/
kenjiArai	0:d4960fcea8ff	101	static void prvSetupTimerInterrupt( void );
kenjiArai	0:d4960fcea8ff	102
kenjiArai	0:d4960fcea8ff	103	/*
kenjiArai	0:d4960fcea8ff	104	* Exception handlers.
kenjiArai	0:d4960fcea8ff	105	*/
kenjiArai	0:d4960fcea8ff	106	#if 0
kenjiArai	0:d4960fcea8ff	107	void xPortPendSVHandler( void ) __attribute__ (( naked ));
kenjiArai	0:d4960fcea8ff	108	#else
kenjiArai	0:d4960fcea8ff	109	extern void xPortPendSVHandler( void );
kenjiArai	0:d4960fcea8ff	110	#endif
kenjiArai	0:d4960fcea8ff	111	void xPortSysTickHandler( void );
kenjiArai	0:d4960fcea8ff	112	#if 0
kenjiArai	0:d4960fcea8ff	113	void vPortSVCHandler( void ) __attribute__ (( naked ));
kenjiArai	0:d4960fcea8ff	114	#else
kenjiArai	0:d4960fcea8ff	115	extern void vPortSVCHandler( void );
kenjiArai	0:d4960fcea8ff	116	#endif
kenjiArai	0:d4960fcea8ff	117
kenjiArai	0:d4960fcea8ff	118	/*
kenjiArai	0:d4960fcea8ff	119	* Start first task is a separate function so it can be tested in isolation.
kenjiArai	0:d4960fcea8ff	120	*/
kenjiArai	0:d4960fcea8ff	121	#ifdef __cplusplus
kenjiArai	0:d4960fcea8ff	122	extern "C" {
kenjiArai	0:d4960fcea8ff	123	#endif
kenjiArai	0:d4960fcea8ff	124	#if 0
kenjiArai	0:d4960fcea8ff	125	void vPortStartFirstTask( void ) __attribute__ (( naked ));
kenjiArai	0:d4960fcea8ff	126	#else
kenjiArai	0:d4960fcea8ff	127	extern void vPortStartFirstTask( void );
kenjiArai	0:d4960fcea8ff	128	#endif
kenjiArai	0:d4960fcea8ff	129	#ifdef __cplusplus
kenjiArai	0:d4960fcea8ff	130	}
kenjiArai	0:d4960fcea8ff	131	#endif
kenjiArai	0:d4960fcea8ff	132	/-----------------------------------------------------------/
kenjiArai	0:d4960fcea8ff	133
kenjiArai	0:d4960fcea8ff	134	/*
kenjiArai	0:d4960fcea8ff	135	* See header file for description.
kenjiArai	0:d4960fcea8ff	136	*/
kenjiArai	0:d4960fcea8ff	137	portSTACK_TYPE pxPortInitialiseStack( portSTACK_TYPE pxTopOfStack, pdTASK_CODE pxCode, void *pvParameters )
kenjiArai	0:d4960fcea8ff	138	{
kenjiArai	0:d4960fcea8ff	139	/* Simulate the stack frame as it would be created by a context switch
kenjiArai	0:d4960fcea8ff	140	interrupt. */
kenjiArai	0:d4960fcea8ff	141	pxTopOfStack--; /* Offset added to account for the way the MCU uses the stack on entry/exit of interrupts. */
kenjiArai	0:d4960fcea8ff	142	pxTopOfStack = portINITIAL_XPSR; / xPSR */
kenjiArai	0:d4960fcea8ff	143	pxTopOfStack--;
kenjiArai	0:d4960fcea8ff	144	pxTopOfStack = ( portSTACK_TYPE ) pxCode; / PC */
kenjiArai	0:d4960fcea8ff	145	pxTopOfStack--;
kenjiArai	0:d4960fcea8ff	146	pxTopOfStack = 0; / LR */
kenjiArai	0:d4960fcea8ff	147	pxTopOfStack -= 5; /* R12, R3, R2 and R1. */
kenjiArai	0:d4960fcea8ff	148	pxTopOfStack = ( portSTACK_TYPE ) pvParameters; / R0 */
kenjiArai	0:d4960fcea8ff	149	pxTopOfStack -= 8; /* R11, R10, R9, R8, R7, R6, R5 and R4. */
kenjiArai	0:d4960fcea8ff	150
kenjiArai	0:d4960fcea8ff	151	return pxTopOfStack;
kenjiArai	0:d4960fcea8ff	152	}
kenjiArai	0:d4960fcea8ff	153	/-----------------------------------------------------------/
kenjiArai	0:d4960fcea8ff	154
kenjiArai	0:d4960fcea8ff	155	#if 0
kenjiArai	0:d4960fcea8ff	156	void vPortSVCHandler( void )
kenjiArai	0:d4960fcea8ff	157	{
kenjiArai	0:d4960fcea8ff	158	__asm volatile (
kenjiArai	0:d4960fcea8ff	159	" ldr r3, pxCurrentTCBConst2 \n" /* Restore the context. */
kenjiArai	0:d4960fcea8ff	160	" ldr r1, [r3] \n" /* Use pxCurrentTCBConst to get the pxCurrentTCB address. */
kenjiArai	0:d4960fcea8ff	161	" ldr r0, [r1] \n" /* The first item in pxCurrentTCB is the task top of stack. */
kenjiArai	0:d4960fcea8ff	162	" ldmia r0!, {r4-r11} \n" /* Pop the registers that are not automatically saved on exception entry and the critical nesting count. */
kenjiArai	0:d4960fcea8ff	163	" msr psp, r0 \n" /* Restore the task stack pointer. */
kenjiArai	0:d4960fcea8ff	164	" mov r0, #0 \n"
kenjiArai	0:d4960fcea8ff	165	" msr basepri, r0 \n"
kenjiArai	0:d4960fcea8ff	166	" orr r14, #0xd \n"
kenjiArai	0:d4960fcea8ff	167	" bx r14 \n"
kenjiArai	0:d4960fcea8ff	168	" \n"
kenjiArai	0:d4960fcea8ff	169	" .align 2 \n"
kenjiArai	0:d4960fcea8ff	170	"pxCurrentTCBConst2: .word pxCurrentTCB \n"
kenjiArai	0:d4960fcea8ff	171	);
kenjiArai	0:d4960fcea8ff	172	}
kenjiArai	0:d4960fcea8ff	173	/-----------------------------------------------------------/
kenjiArai	0:d4960fcea8ff	174	#endif
kenjiArai	0:d4960fcea8ff	175
kenjiArai	0:d4960fcea8ff	176	#if 0
kenjiArai	0:d4960fcea8ff	177	void vPortStartFirstTask( void )
kenjiArai	0:d4960fcea8ff	178	{
kenjiArai	0:d4960fcea8ff	179	__asm volatile(
kenjiArai	0:d4960fcea8ff	180	" ldr r0, =0xE000ED08 \n" /* Use the NVIC offset register to locate the stack. */
kenjiArai	0:d4960fcea8ff	181	" ldr r0, [r0] \n"
kenjiArai	0:d4960fcea8ff	182	" ldr r0, [r0] \n"
kenjiArai	0:d4960fcea8ff	183	" msr msp, r0 \n" /* Set the msp back to the start of the stack. */
kenjiArai	0:d4960fcea8ff	184	" svc 0 \n" /* System call to start first task. */
kenjiArai	0:d4960fcea8ff	185	);
kenjiArai	0:d4960fcea8ff	186	}
kenjiArai	0:d4960fcea8ff	187	/-----------------------------------------------------------/
kenjiArai	0:d4960fcea8ff	188	#endif
kenjiArai	0:d4960fcea8ff	189
kenjiArai	0:d4960fcea8ff	190	/*
kenjiArai	0:d4960fcea8ff	191	* See header file for description.
kenjiArai	0:d4960fcea8ff	192	*/
kenjiArai	0:d4960fcea8ff	193	portBASE_TYPE xPortStartScheduler( void )
kenjiArai	0:d4960fcea8ff	194	{
kenjiArai	0:d4960fcea8ff	195	/* Make PendSV, CallSV and SysTick the same priroity as the kernel. */
kenjiArai	0:d4960fcea8ff	196	*(portNVIC_SYSPRI2) \|= portNVIC_PENDSV_PRI;
kenjiArai	0:d4960fcea8ff	197	*(portNVIC_SYSPRI2) \|= portNVIC_SYSTICK_PRI;
kenjiArai	0:d4960fcea8ff	198
kenjiArai	0:d4960fcea8ff	199	/* Start the timer that generates the tick ISR. Interrupts are disabled
kenjiArai	0:d4960fcea8ff	200	here already. */
kenjiArai	0:d4960fcea8ff	201	prvSetupTimerInterrupt();
kenjiArai	0:d4960fcea8ff	202
kenjiArai	0:d4960fcea8ff	203	/* Initialise the critical nesting count ready for the first task. */
kenjiArai	0:d4960fcea8ff	204	uxCriticalNesting = 0;
kenjiArai	0:d4960fcea8ff	205
kenjiArai	0:d4960fcea8ff	206	/* Start the first task. */
kenjiArai	0:d4960fcea8ff	207	vPortStartFirstTask();
kenjiArai	0:d4960fcea8ff	208
kenjiArai	0:d4960fcea8ff	209	/* Should not get here! */
kenjiArai	0:d4960fcea8ff	210	return 0;
kenjiArai	0:d4960fcea8ff	211	}
kenjiArai	0:d4960fcea8ff	212	/-----------------------------------------------------------/
kenjiArai	0:d4960fcea8ff	213
kenjiArai	0:d4960fcea8ff	214	void vPortEndScheduler( void )
kenjiArai	0:d4960fcea8ff	215	{
kenjiArai	0:d4960fcea8ff	216	/* It is unlikely that the CM3 port will require this function as there
kenjiArai	0:d4960fcea8ff	217	is nothing to return to. */
kenjiArai	0:d4960fcea8ff	218	}
kenjiArai	0:d4960fcea8ff	219	/-----------------------------------------------------------/
kenjiArai	0:d4960fcea8ff	220
kenjiArai	0:d4960fcea8ff	221	void vPortYieldFromISR( void )
kenjiArai	0:d4960fcea8ff	222	{
kenjiArai	0:d4960fcea8ff	223	/* Set a PendSV to request a context switch. */
kenjiArai	0:d4960fcea8ff	224	*(portNVIC_INT_CTRL) = portNVIC_PENDSVSET;
kenjiArai	0:d4960fcea8ff	225	}
kenjiArai	0:d4960fcea8ff	226	/-----------------------------------------------------------/
kenjiArai	0:d4960fcea8ff	227
kenjiArai	0:d4960fcea8ff	228	#if 0
kenjiArai	0:d4960fcea8ff	229	void vPortEnterCritical( void )
kenjiArai	0:d4960fcea8ff	230	{
kenjiArai	0:d4960fcea8ff	231	portDISABLE_INTERRUPTS();
kenjiArai	0:d4960fcea8ff	232	uxCriticalNesting++;
kenjiArai	0:d4960fcea8ff	233	}
kenjiArai	0:d4960fcea8ff	234	/-----------------------------------------------------------/
kenjiArai	0:d4960fcea8ff	235
kenjiArai	0:d4960fcea8ff	236	void vPortExitCritical( void )
kenjiArai	0:d4960fcea8ff	237	{
kenjiArai	0:d4960fcea8ff	238	uxCriticalNesting--;
kenjiArai	0:d4960fcea8ff	239	if( uxCriticalNesting == 0 )
kenjiArai	0:d4960fcea8ff	240	{
kenjiArai	0:d4960fcea8ff	241	portENABLE_INTERRUPTS();
kenjiArai	0:d4960fcea8ff	242	}
kenjiArai	0:d4960fcea8ff	243	}
kenjiArai	0:d4960fcea8ff	244	/-----------------------------------------------------------/
kenjiArai	0:d4960fcea8ff	245
kenjiArai	0:d4960fcea8ff	246
kenjiArai	0:d4960fcea8ff	247	void xPortPendSVHandler( void )
kenjiArai	0:d4960fcea8ff	248	{
kenjiArai	0:d4960fcea8ff	249	/* This is a naked function. */
kenjiArai	0:d4960fcea8ff	250
kenjiArai	0:d4960fcea8ff	251	__asm volatile
kenjiArai	0:d4960fcea8ff	252	(
kenjiArai	0:d4960fcea8ff	253	" mrs r0, psp \n"
kenjiArai	0:d4960fcea8ff	254	" \n"
kenjiArai	0:d4960fcea8ff	255	" ldr r3, pxCurrentTCBConst \n" /* Get the location of the current TCB. */
kenjiArai	0:d4960fcea8ff	256	" ldr r2, [r3] \n"
kenjiArai	0:d4960fcea8ff	257	" \n"
kenjiArai	0:d4960fcea8ff	258	" stmdb r0!, {r4-r11} \n" /* Save the remaining registers. */
kenjiArai	0:d4960fcea8ff	259	" str r0, [r2] \n" /* Save the new top of stack into the first member of the TCB. */
kenjiArai	0:d4960fcea8ff	260	" \n"
kenjiArai	0:d4960fcea8ff	261	" stmdb sp!, {r3, r14} \n"
kenjiArai	0:d4960fcea8ff	262	" mov r0, %0 \n"
kenjiArai	0:d4960fcea8ff	263	" msr basepri, r0 \n"
kenjiArai	0:d4960fcea8ff	264	" bl vTaskSwitchContext \n"
kenjiArai	0:d4960fcea8ff	265	" mov r0, #0 \n"
kenjiArai	0:d4960fcea8ff	266	" msr basepri, r0 \n"
kenjiArai	0:d4960fcea8ff	267	" ldmia sp!, {r3, r14} \n"
kenjiArai	0:d4960fcea8ff	268	" \n" /* Restore the context, including the critical nesting count. */
kenjiArai	0:d4960fcea8ff	269	" ldr r1, [r3] \n"
kenjiArai	0:d4960fcea8ff	270	" ldr r0, [r1] \n" /* The first item in pxCurrentTCB is the task top of stack. */
kenjiArai	0:d4960fcea8ff	271	" ldmia r0!, {r4-r11} \n" /* Pop the registers. */
kenjiArai	0:d4960fcea8ff	272	" msr psp, r0 \n"
kenjiArai	0:d4960fcea8ff	273	" bx r14 \n"
kenjiArai	0:d4960fcea8ff	274	" \n"
kenjiArai	0:d4960fcea8ff	275	" .align 2 \n"
kenjiArai	0:d4960fcea8ff	276	"pxCurrentTCBConst: .word pxCurrentTCB \n"
kenjiArai	0:d4960fcea8ff	277	::"i"(configMAX_SYSCALL_INTERRUPT_PRIORITY)
kenjiArai	0:d4960fcea8ff	278	);
kenjiArai	0:d4960fcea8ff	279	}
kenjiArai	0:d4960fcea8ff	280	/-----------------------------------------------------------/
kenjiArai	0:d4960fcea8ff	281
kenjiArai	0:d4960fcea8ff	282	void xPortSysTickHandler( void )
kenjiArai	0:d4960fcea8ff	283	{
kenjiArai	0:d4960fcea8ff	284	unsigned long ulDummy;
kenjiArai	0:d4960fcea8ff	285
kenjiArai	0:d4960fcea8ff	286	/* If using preemption, also force a context switch. */
kenjiArai	0:d4960fcea8ff	287	#if configUSE_PREEMPTION == 1
kenjiArai	0:d4960fcea8ff	288	*(portNVIC_INT_CTRL) = portNVIC_PENDSVSET;
kenjiArai	0:d4960fcea8ff	289	#endif
kenjiArai	0:d4960fcea8ff	290
kenjiArai	0:d4960fcea8ff	291	// Modified by Kenji Arai / JH1PJL, October 30th,2010
kenjiArai	0:d4960fcea8ff	292	ulDummy = 0;
kenjiArai	0:d4960fcea8ff	293	portSET_INTERRUPT_MASK_FROM_ISR();
kenjiArai	0:d4960fcea8ff	294	{
kenjiArai	0:d4960fcea8ff	295	vTaskIncrementTick();
kenjiArai	0:d4960fcea8ff	296	}
kenjiArai	0:d4960fcea8ff	297	portCLEAR_INTERRUPT_MASK_FROM_ISR( ulDummy );
kenjiArai	0:d4960fcea8ff	298	}
kenjiArai	0:d4960fcea8ff	299	/-----------------------------------------------------------/
kenjiArai	0:d4960fcea8ff	300	#endif
kenjiArai	0:d4960fcea8ff	301
kenjiArai	0:d4960fcea8ff	302	/*
kenjiArai	0:d4960fcea8ff	303	* Setup the systick timer to generate the tick interrupts at the required
kenjiArai	0:d4960fcea8ff	304	* frequency.
kenjiArai	0:d4960fcea8ff	305	*/
kenjiArai	0:d4960fcea8ff	306	void prvSetupTimerInterrupt( void )
kenjiArai	0:d4960fcea8ff	307	{
kenjiArai	0:d4960fcea8ff	308	/* Configure SysTick to interrupt at the requested rate. */
kenjiArai	0:d4960fcea8ff	309	*(portNVIC_SYSTICK_LOAD) = ( configCPU_CLOCK_HZ / configTICK_RATE_HZ ) - 1UL;
kenjiArai	0:d4960fcea8ff	310	*(portNVIC_SYSTICK_CTRL) = portNVIC_SYSTICK_CLK \| portNVIC_SYSTICK_INT \| portNVIC_SYSTICK_ENABLE;
kenjiArai	0:d4960fcea8ff	311	}
kenjiArai	0:d4960fcea8ff	312	/-----------------------------------------------------------/
kenjiArai	0:d4960fcea8ff	313

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Type:	Program
Created:	01 Jan 2011
Imports:	289
Forks:	1
Commits:	1
Dependents:	0
Dependencies:	0
Followers:	14

FreeRTOS/Source/portable/GCC/ARM_CM3/port.c@0:d4960fcea8ff, 2011-01-01 (annotated)

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