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scmRTOS/CortexM3/OS_Target.h@0:331db0b44b67, 2010-09-21 (annotated)

Committer:: mbed714
Date:: Tue Sep 21 19:48:05 2010 +0000
Revision:: 0:331db0b44b67

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User	Revision	Line number	New contents of line
mbed714	0:331db0b44b67	1	//******************************************************************************
mbed714	0:331db0b44b67	2	//*
mbed714	0:331db0b44b67	3	//* FULLNAME: Single-Chip Microcontroller Real-Time Operating System
mbed714	0:331db0b44b67	4	//*
mbed714	0:331db0b44b67	5	//* NICKNAME: scmRTOS
mbed714	0:331db0b44b67	6	//*
mbed714	0:331db0b44b67	7	//* PROCESSOR: ARM Cortex-M3
mbed714	0:331db0b44b67	8	//*
mbed714	0:331db0b44b67	9	//* TOOLKIT: RVCT (ARM)
mbed714	0:331db0b44b67	10	//*
mbed714	0:331db0b44b67	11	//* PURPOSE: Target Dependent Stuff Header. Declarations And Definitions
mbed714	0:331db0b44b67	12	//*
mbed714	0:331db0b44b67	13	//* Version: 3.10
mbed714	0:331db0b44b67	14	//*
mbed714	0:331db0b44b67	15	//* $Revision: 195 $
mbed714	0:331db0b44b67	16	//* $Date:: 2008-06-19 #$
mbed714	0:331db0b44b67	17	//*
mbed714	0:331db0b44b67	18	//* Copyright (c) 2003-2010, Harry E. Zhurov
mbed714	0:331db0b44b67	19	//*
mbed714	0:331db0b44b67	20	//* Permission is hereby granted, free of charge, to any person
mbed714	0:331db0b44b67	21	//* obtaining a copy of this software and associated documentation
mbed714	0:331db0b44b67	22	//* files (the "Software"), to deal in the Software without restriction,
mbed714	0:331db0b44b67	23	//* including without limitation the rights to use, copy, modify, merge,
mbed714	0:331db0b44b67	24	//* publish, distribute, sublicense, and/or sell copies of the Software,
mbed714	0:331db0b44b67	25	//* and to permit persons to whom the Software is furnished to do so,
mbed714	0:331db0b44b67	26	//* subject to the following conditions:
mbed714	0:331db0b44b67	27	//*
mbed714	0:331db0b44b67	28	//* The above copyright notice and this permission notice shall be included
mbed714	0:331db0b44b67	29	//* in all copies or substantial portions of the Software.
mbed714	0:331db0b44b67	30	//*
mbed714	0:331db0b44b67	31	//* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
mbed714	0:331db0b44b67	32	//* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
mbed714	0:331db0b44b67	33	//* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
mbed714	0:331db0b44b67	34	//* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
mbed714	0:331db0b44b67	35	//* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
mbed714	0:331db0b44b67	36	//* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH
mbed714	0:331db0b44b67	37	//* THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
mbed714	0:331db0b44b67	38	//*
mbed714	0:331db0b44b67	39	//* =================================================================
mbed714	0:331db0b44b67	40	//* See http://scmrtos.sourceforge.net for documentation, latest
mbed714	0:331db0b44b67	41	//* information, license and contact details.
mbed714	0:331db0b44b67	42	//* =================================================================
mbed714	0:331db0b44b67	43	//*
mbed714	0:331db0b44b67	44	//******************************************************************************
mbed714	0:331db0b44b67	45	//* Ported by Andrey Chuikin, Copyright (c) 2008-2010
mbed714	0:331db0b44b67	46
mbed714	0:331db0b44b67	47	#ifndef scmRTOS_CORTEXM3_H
mbed714	0:331db0b44b67	48	#define scmRTOS_CORTEXM3_H
mbed714	0:331db0b44b67	49
mbed714	0:331db0b44b67	50	#include <commdefs.h>
mbed714	0:331db0b44b67	51
mbed714	0:331db0b44b67	52	//------------------------------------------------------------------------------
mbed714	0:331db0b44b67	53	//
mbed714	0:331db0b44b67	54	// Compiler and Target checks
mbed714	0:331db0b44b67	55	//
mbed714	0:331db0b44b67	56	//
mbed714	0:331db0b44b67	57	#ifndef __ARMCC_VERSION
mbed714	0:331db0b44b67	58	#error "This file should only be compiled with ARM RVCT Compiler"
mbed714	0:331db0b44b67	59	#endif // __ARMCC_VERSION
mbed714	0:331db0b44b67	60
mbed714	0:331db0b44b67	61	#if __TARGET_ARCH_ARM != 0 \|\| __TARGET_ARCH_THUMB != 4
mbed714	0:331db0b44b67	62	#error "This file must be compiled for ARMv7-M (Cortex-M3) processor only."
mbed714	0:331db0b44b67	63	#endif
mbed714	0:331db0b44b67	64
mbed714	0:331db0b44b67	65	//------------------------------------------------------------------------------
mbed714	0:331db0b44b67	66	//
mbed714	0:331db0b44b67	67	// Target specific types
mbed714	0:331db0b44b67	68	//
mbed714	0:331db0b44b67	69	//
mbed714	0:331db0b44b67	70	typedef dword TStackItem;
mbed714	0:331db0b44b67	71	typedef dword TStatusReg;
mbed714	0:331db0b44b67	72
mbed714	0:331db0b44b67	73	//-----------------------------------------------------------------------------
mbed714	0:331db0b44b67	74	//
mbed714	0:331db0b44b67	75	// Configuration macros
mbed714	0:331db0b44b67	76	//
mbed714	0:331db0b44b67	77	//
mbed714	0:331db0b44b67	78	#define OS_PROCESS __attribute__((__noreturn__))
mbed714	0:331db0b44b67	79	#define OS_INTERRUPT
mbed714	0:331db0b44b67	80	#define DUMMY_INSTR() __NOP()
mbed714	0:331db0b44b67	81	#define INLINE_PROCESS_CTOR INLINE inline
mbed714	0:331db0b44b67	82
mbed714	0:331db0b44b67	83	//-----------------------------------------------------------------------------
mbed714	0:331db0b44b67	84	//
mbed714	0:331db0b44b67	85	// Uncomment macro value below for SystemTimer() run in critical section
mbed714	0:331db0b44b67	86	//
mbed714	0:331db0b44b67	87	// This is useful (and necessary) when target processor has hardware
mbed714	0:331db0b44b67	88	// enabled nested interrups. Cortex-M3 have such interrupts.
mbed714	0:331db0b44b67	89	//
mbed714	0:331db0b44b67	90	#define SYS_TIMER_CRIT_SECT() TCritSect cs
mbed714	0:331db0b44b67	91
mbed714	0:331db0b44b67	92	//-----------------------------------------------------------------------------
mbed714	0:331db0b44b67	93	// Separate return stack not required
mbed714	0:331db0b44b67	94	#define SEPARATE_RETURN_STACK 0
mbed714	0:331db0b44b67	95
mbed714	0:331db0b44b67	96	//-----------------------------------------------------------------------------
mbed714	0:331db0b44b67	97	// Software interrupt stack switching not supported in Cortex-M3 port
mbed714	0:331db0b44b67	98	// because processor implements hardware stack switching.
mbed714	0:331db0b44b67	99	// So, system timer isr wrapper can't be choosen at project level
mbed714	0:331db0b44b67	100	//
mbed714	0:331db0b44b67	101	#define scmRTOS_ISRW_TYPE TISRW
mbed714	0:331db0b44b67	102
mbed714	0:331db0b44b67	103	//-----------------------------------------------------------------------------
mbed714	0:331db0b44b67	104	//
mbed714	0:331db0b44b67	105	// scmRTOS Context Switch Scheme
mbed714	0:331db0b44b67	106	//
mbed714	0:331db0b44b67	107	// The macro defines a context switch manner. Value 0 sets direct context
mbed714	0:331db0b44b67	108	// switch in the scheduler and in the OS ISRs. This is the primary method.
mbed714	0:331db0b44b67	109	// Value 1 sets the second way to switch context - by using of software
mbed714	0:331db0b44b67	110	// interrupt. See documentation fo details.
mbed714	0:331db0b44b67	111	// Cortex-M3 port supports software interrupt switch method only.
mbed714	0:331db0b44b67	112	//
mbed714	0:331db0b44b67	113	#define scmRTOS_CONTEXT_SWITCH_SCHEME 1
mbed714	0:331db0b44b67	114
mbed714	0:331db0b44b67	115	//-----------------------------------------------------------------------------
mbed714	0:331db0b44b67	116	//
mbed714	0:331db0b44b67	117	// Include project-level configurations
mbed714	0:331db0b44b67	118	// !!! The order of includes is important !!!
mbed714	0:331db0b44b67	119	//
mbed714	0:331db0b44b67	120	#include "../../scmRTOS_config.h"
mbed714	0:331db0b44b67	121	#include "../scmRTOS_TARGET_CFG.h"
mbed714	0:331db0b44b67	122	#include <scmRTOS_defs.h>
mbed714	0:331db0b44b67	123	#include <LPC17xx.h>
mbed714	0:331db0b44b67	124
mbed714	0:331db0b44b67	125	//-----------------------------------------------------------------------------
mbed714	0:331db0b44b67	126	//
mbed714	0:331db0b44b67	127	// The Critital Section Wrapper
mbed714	0:331db0b44b67	128	//
mbed714	0:331db0b44b67	129	//
mbed714	0:331db0b44b67	130	#define __enable_interrupt() __enable_irq()
mbed714	0:331db0b44b67	131	#define __disable_interrupt() __disable_irq()
mbed714	0:331db0b44b67	132
mbed714	0:331db0b44b67	133	#define __set_interrupt_state(status) __set_PRIMASK(status)
mbed714	0:331db0b44b67	134	#define __get_interrupt_state() __get_PRIMASK()
mbed714	0:331db0b44b67	135
mbed714	0:331db0b44b67	136	class TCritSect
mbed714	0:331db0b44b67	137	{
mbed714	0:331db0b44b67	138	public:
mbed714	0:331db0b44b67	139	TCritSect () : StatusReg(__get_interrupt_state()) { __disable_interrupt(); }
mbed714	0:331db0b44b67	140	~TCritSect() { __set_interrupt_state(StatusReg); }
mbed714	0:331db0b44b67	141
mbed714	0:331db0b44b67	142	private:
mbed714	0:331db0b44b67	143	TStatusReg StatusReg;
mbed714	0:331db0b44b67	144	};
mbed714	0:331db0b44b67	145	//-----------------------------------------------------------------------------
mbed714	0:331db0b44b67	146
mbed714	0:331db0b44b67	147	//-----------------------------------------------------------------------------
mbed714	0:331db0b44b67	148	//
mbed714	0:331db0b44b67	149	// Priority stuff
mbed714	0:331db0b44b67	150	//
mbed714	0:331db0b44b67	151	//
mbed714	0:331db0b44b67	152	namespace OS
mbed714	0:331db0b44b67	153	{
mbed714	0:331db0b44b67	154	INLINE inline OS::TProcessMap GetPrioTag(const byte pr) { return static_cast<OS::TProcessMap> (1 << pr); }
mbed714	0:331db0b44b67	155
mbed714	0:331db0b44b67	156	#if scmRTOS_PRIORITY_ORDER == 0
mbed714	0:331db0b44b67	157	INLINE inline byte GetHighPriority(TProcessMap pm)
mbed714	0:331db0b44b67	158	{
mbed714	0:331db0b44b67	159	byte pr = 0;
mbed714	0:331db0b44b67	160
mbed714	0:331db0b44b67	161	while( !(pm & 0x0001) )
mbed714	0:331db0b44b67	162	{
mbed714	0:331db0b44b67	163	pr++;
mbed714	0:331db0b44b67	164	pm >>= 1;
mbed714	0:331db0b44b67	165	}
mbed714	0:331db0b44b67	166	return pr;
mbed714	0:331db0b44b67	167	}
mbed714	0:331db0b44b67	168	#else
mbed714	0:331db0b44b67	169	INLINE inline byte GetHighPriority(TProcessMap pm) { return (31 - __clz(pm)); }
mbed714	0:331db0b44b67	170	#endif // scmRTOS_PRIORITY_ORDER
mbed714	0:331db0b44b67	171	}
mbed714	0:331db0b44b67	172
mbed714	0:331db0b44b67	173	//-----------------------------------------------------------------------------
mbed714	0:331db0b44b67	174	//
mbed714	0:331db0b44b67	175	// Interrupt and Interrupt Service Routines support
mbed714	0:331db0b44b67	176	//
mbed714	0:331db0b44b67	177	INLINE inline TStatusReg GetInterruptState( ) { return __get_interrupt_state(); }
mbed714	0:331db0b44b67	178	INLINE inline void SetInterruptState(TStatusReg sr) { __set_interrupt_state(sr); }
mbed714	0:331db0b44b67	179
mbed714	0:331db0b44b67	180	INLINE inline void EnableInterrupts() { __enable_interrupt(); }
mbed714	0:331db0b44b67	181	INLINE inline void DisableInterrupts() { __disable_interrupt(); }
mbed714	0:331db0b44b67	182
mbed714	0:331db0b44b67	183
mbed714	0:331db0b44b67	184	namespace OS
mbed714	0:331db0b44b67	185	{
mbed714	0:331db0b44b67	186	INLINE inline void EnableContextSwitch() { EnableInterrupts(); }
mbed714	0:331db0b44b67	187	INLINE inline void DisableContextSwitch() { DisableInterrupts(); }
mbed714	0:331db0b44b67	188	}
mbed714	0:331db0b44b67	189
mbed714	0:331db0b44b67	190	#include <OS_Kernel.h>
mbed714	0:331db0b44b67	191
mbed714	0:331db0b44b67	192	namespace OS
mbed714	0:331db0b44b67	193	{
mbed714	0:331db0b44b67	194	//--------------------------------------------------------------------------
mbed714	0:331db0b44b67	195	//
mbed714	0:331db0b44b67	196	// NAME : OS ISR support
mbed714	0:331db0b44b67	197	//
mbed714	0:331db0b44b67	198	// PURPOSE : Implements common actions on interrupt enter and exit
mbed714	0:331db0b44b67	199	// under the OS
mbed714	0:331db0b44b67	200	//
mbed714	0:331db0b44b67	201	// DESCRIPTION:
mbed714	0:331db0b44b67	202	//
mbed714	0:331db0b44b67	203	//
mbed714	0:331db0b44b67	204	class TISRW
mbed714	0:331db0b44b67	205	{
mbed714	0:331db0b44b67	206	public:
mbed714	0:331db0b44b67	207	INLINE TISRW() { ISR_Enter(); }
mbed714	0:331db0b44b67	208	INLINE ~TISRW() { ISR_Exit(); }
mbed714	0:331db0b44b67	209
mbed714	0:331db0b44b67	210	private:
mbed714	0:331db0b44b67	211	//-----------------------------------------------------
mbed714	0:331db0b44b67	212	INLINE void ISR_Enter()
mbed714	0:331db0b44b67	213	{
mbed714	0:331db0b44b67	214	TCritSect cs;
mbed714	0:331db0b44b67	215	Kernel.ISR_NestCount++;
mbed714	0:331db0b44b67	216	}
mbed714	0:331db0b44b67	217	//-----------------------------------------------------
mbed714	0:331db0b44b67	218	INLINE void ISR_Exit()
mbed714	0:331db0b44b67	219	{
mbed714	0:331db0b44b67	220	TCritSect cs;
mbed714	0:331db0b44b67	221	if(--Kernel.ISR_NestCount) return;
mbed714	0:331db0b44b67	222	Kernel.SchedISR();
mbed714	0:331db0b44b67	223	}
mbed714	0:331db0b44b67	224	//-----------------------------------------------------
mbed714	0:331db0b44b67	225	};
mbed714	0:331db0b44b67	226
mbed714	0:331db0b44b67	227	// No software interrupt stack switching provided,
mbed714	0:331db0b44b67	228	// TISRW_SS declared to be the same as TISRW for porting compability
mbed714	0:331db0b44b67	229	#define TISRW_SS TISRW
mbed714	0:331db0b44b67	230
mbed714	0:331db0b44b67	231	} // ns OS
mbed714	0:331db0b44b67	232	//-----------------------------------------------------------------------------
mbed714	0:331db0b44b67	233
mbed714	0:331db0b44b67	234	#endif // scmRTOS_CORTEXM3_H
mbed714	0:331db0b44b67	235	//-----------------------------------------------------------------------------
mbed714	0:331db0b44b67	236

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Type:	Library
Created:	29 Aug 2014
Imports:	0
Forks:	0
Commits:	2
Dependents:	0
Dependencies:	1
Followers:	1

scmRTOS/CortexM3/OS_Target.h@0:331db0b44b67, 2010-09-21 (annotated)

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