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Diff: scmRTOS/CortexM3/OS_Target.h
- Revision:
- 1:a33478a10fd0
- Parent:
- 0:331db0b44b67
--- a/scmRTOS/CortexM3/OS_Target.h Tue Sep 21 19:48:05 2010 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,236 +0,0 @@ -//****************************************************************************** -//* -//* FULLNAME: Single-Chip Microcontroller Real-Time Operating System -//* -//* NICKNAME: scmRTOS -//* -//* PROCESSOR: ARM Cortex-M3 -//* -//* TOOLKIT: RVCT (ARM) -//* -//* PURPOSE: Target Dependent Stuff Header. Declarations And Definitions -//* -//* Version: 3.10 -//* -//* $Revision: 195 $ -//* $Date:: 2008-06-19 #$ -//* -//* Copyright (c) 2003-2010, Harry E. Zhurov -//* -//* 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. -//* -//* ================================================================= -//* See http://scmrtos.sourceforge.net for documentation, latest -//* information, license and contact details. -//* ================================================================= -//* -//****************************************************************************** -//* Ported by Andrey Chuikin, Copyright (c) 2008-2010 - -#ifndef scmRTOS_CORTEXM3_H -#define scmRTOS_CORTEXM3_H - -#include <commdefs.h> - -//------------------------------------------------------------------------------ -// -// Compiler and Target checks -// -// -#ifndef __ARMCC_VERSION -#error "This file should only be compiled with ARM RVCT Compiler" -#endif // __ARMCC_VERSION - -#if __TARGET_ARCH_ARM != 0 || __TARGET_ARCH_THUMB != 4 -#error "This file must be compiled for ARMv7-M (Cortex-M3) processor only." -#endif - -//------------------------------------------------------------------------------ -// -// Target specific types -// -// -typedef dword TStackItem; -typedef dword TStatusReg; - -//----------------------------------------------------------------------------- -// -// Configuration macros -// -// -#define OS_PROCESS __attribute__((__noreturn__)) -#define OS_INTERRUPT -#define DUMMY_INSTR() __NOP() -#define INLINE_PROCESS_CTOR INLINE inline - -//----------------------------------------------------------------------------- -// -// Uncomment macro value below for SystemTimer() run in critical section -// -// This is useful (and necessary) when target processor has hardware -// enabled nested interrups. Cortex-M3 have such interrupts. -// -#define SYS_TIMER_CRIT_SECT() TCritSect cs - -//----------------------------------------------------------------------------- -// Separate return stack not required -#define SEPARATE_RETURN_STACK 0 - -//----------------------------------------------------------------------------- -// Software interrupt stack switching not supported in Cortex-M3 port -// because processor implements hardware stack switching. -// So, system timer isr wrapper can't be choosen at project level -// -#define scmRTOS_ISRW_TYPE TISRW - -//----------------------------------------------------------------------------- -// -// scmRTOS Context Switch Scheme -// -// The macro defines a context switch manner. Value 0 sets direct context -// switch in the scheduler and in the OS ISRs. This is the primary method. -// Value 1 sets the second way to switch context - by using of software -// interrupt. See documentation fo details. -// Cortex-M3 port supports software interrupt switch method only. -// -#define scmRTOS_CONTEXT_SWITCH_SCHEME 1 - -//----------------------------------------------------------------------------- -// -// Include project-level configurations -// !!! The order of includes is important !!! -// -#include "../../scmRTOS_config.h" -#include "../scmRTOS_TARGET_CFG.h" -#include <scmRTOS_defs.h> -#include <LPC17xx.h> - -//----------------------------------------------------------------------------- -// -// The Critital Section Wrapper -// -// -#define __enable_interrupt() __enable_irq() -#define __disable_interrupt() __disable_irq() - -#define __set_interrupt_state(status) __set_PRIMASK(status) -#define __get_interrupt_state() __get_PRIMASK() - -class TCritSect -{ -public: - TCritSect () : StatusReg(__get_interrupt_state()) { __disable_interrupt(); } - ~TCritSect() { __set_interrupt_state(StatusReg); } - -private: - TStatusReg StatusReg; -}; -//----------------------------------------------------------------------------- - -//----------------------------------------------------------------------------- -// -// Priority stuff -// -// -namespace OS -{ -INLINE inline OS::TProcessMap GetPrioTag(const byte pr) { return static_cast<OS::TProcessMap> (1 << pr); } - -#if scmRTOS_PRIORITY_ORDER == 0 - INLINE inline byte GetHighPriority(TProcessMap pm) - { - byte pr = 0; - - while( !(pm & 0x0001) ) - { - pr++; - pm >>= 1; - } - return pr; - } -#else - INLINE inline byte GetHighPriority(TProcessMap pm) { return (31 - __clz(pm)); } -#endif // scmRTOS_PRIORITY_ORDER -} - -//----------------------------------------------------------------------------- -// -// Interrupt and Interrupt Service Routines support -// -INLINE inline TStatusReg GetInterruptState( ) { return __get_interrupt_state(); } -INLINE inline void SetInterruptState(TStatusReg sr) { __set_interrupt_state(sr); } - -INLINE inline void EnableInterrupts() { __enable_interrupt(); } -INLINE inline void DisableInterrupts() { __disable_interrupt(); } - - -namespace OS -{ - INLINE inline void EnableContextSwitch() { EnableInterrupts(); } - INLINE inline void DisableContextSwitch() { DisableInterrupts(); } -} - -#include <OS_Kernel.h> - -namespace OS -{ - //-------------------------------------------------------------------------- - // - // NAME : OS ISR support - // - // PURPOSE : Implements common actions on interrupt enter and exit - // under the OS - // - // DESCRIPTION: - // - // - class TISRW - { - public: - INLINE TISRW() { ISR_Enter(); } - INLINE ~TISRW() { ISR_Exit(); } - - private: - //----------------------------------------------------- - INLINE void ISR_Enter() - { - TCritSect cs; - Kernel.ISR_NestCount++; - } - //----------------------------------------------------- - INLINE void ISR_Exit() - { - TCritSect cs; - if(--Kernel.ISR_NestCount) return; - Kernel.SchedISR(); - } - //----------------------------------------------------- - }; - - // No software interrupt stack switching provided, - // TISRW_SS declared to be the same as TISRW for porting compability - #define TISRW_SS TISRW - -} // ns OS -//----------------------------------------------------------------------------- - -#endif // scmRTOS_CORTEXM3_H -//----------------------------------------------------------------------------- -