CoOS - RTOS, by CooCox(http://www.coocox.org)

http://www.coocox.org/coos.html https://github.com/coocox/coos

General Information

CooCox CoOS is an embedded real-time multi-task OS specially for ARM Cortex M series.

Features

• Free and open real-time Operating System
• Specially designed for Cortex-M series
• Scalable, minimum system kernel is only 974Bytes
• Adaptive Task Scheduling Algorithm.
• Supports preemptive priority and round-robin
• Interrupt latency is next to 0
• Stack overflow detection option
• Semaphore, Mutex, Flag, Mailbox and Queue for communication & synchronisation
• Supports the platforms of ICCARM, ARMCC, GCC

Technical Data

Time Specifications:

      N Function                         Time ( No Robin/Robin ) 

Create defined task, no task switch 5.3us / 5.8us Create defined task, switch task 7.5us / 8.6us Delete task (ExitTask) 4.8us / 5.2us Task switch (SwitchContext) 1.5us / 1.5 us Task switch (upon set flag) 7.5us / 8.1us Task switch (upon sent semaphore) 6.3us / 7.0us Task switch (upon sent mail) 6.1us / 7.1us Task switch (upon sent queue) 7.0us / 7.6us Set Flag (no task switch) 1.3us / 1.3us Send semaphore (no task switch) 1.6us / 1.6us Send mail (no task switch) 1.5us / 1.5us Send queue (no task switch) 1.8us / 1.8us Maximum interrupt lockout for IRQ ISR's 0 / 0

Space Specifications:

   Description                    Space 

RAM Space for Kernel 168 Bytes Code Space for Kernel 974 Bytes RAM Space for a Task TaskStackSize + 24 Bytes(MIN) TaskStackSize + 48 Bytes(MAX) RAM Space for a Mailbox 16 Bytes RAM Space for a Semaphore 16 Bytes RAM Space for a Queue 32 Bytes RAM Space for a Mutex 8 Bytes RAM Space for a User Timer 24 Bytes

User's Guide

We have supplied user's guide to help you to use CooCox CoOS more easily and confidently, which includes:

• Chapter 1 CooCox CoOS Overview
• Chapter 2 Task Management
• Chapter 3 Time Management
• Chapter 4 Memory Management
• Chapter 5 Intertask Synchronization & Communication
• Chapter 6 API Reference To get the details, please see the guide in the /CoOS/Document/CooCox_CoOS_User_Guide.pdf.

Repository Information

The contents of the repository can be divided into four parts:

• CoOS source code that ported to various MCU platforms
• Examples based on CoOS, such as LPC1766_LwIP and so on
• Protocol Stack based on CoOS, such as USB stack and so on
• Some manufacturers library

Contribution

Wish to be a contributor of CoOS? You can:

1. Port CoOS to a new ARM series
2. Improve CoOS and correction bugs
3. Develop middlewares such as gui tcp-ip based on CoOS
4. Add a CoOS example to a series chips.

Please see the guide in the /Document/.

Repository Layout

/CoOS/ CoOS CooCox CoOS's source code. CooCox CoOS's port for Cortex M. It includes the source code for Cortex M architecture with three edition: MDK, IAR, GCC. CooCox CoOS's document TERMS AND CONDITIONS

kernel/
    CooCox CoOS's source code. 
            
portable/
    CooCox CoOS's port for Cortex M. It includes the source code for Cortex M 
    architecture with three edition: MDK, IAR, GCC.
    
    GCC/
        port for GCC.
            
    IAR/
        port for IAR.

    Keil/
        port for Keil.
        
Document/
    Some document.

/Document/ Some document.

/LICENSE Licensing and copyright information.

/Example/ Examples of CoOS for each manufacturer.

ST/
    Examples of CoOS for ST.
	
	STM32F1xx/
	    BSPLIB/
		    SRC/
			INC/
			
		STM32F103RB_CoOS/
		    A example name
			
			IAR/
			
		        APP/
			    Project/
			    ...
		    ...
		
		...
	...   
	
Atmel/
    Examples of CoOS for Atmel.
	
	AT91SAM3Ux/
	    
	    BSPLIB/
		    SRC/
			INC/
			
		AT91SAM3U4E/
		
		...	
	...	
		
Energy/
    Examples of CoOS for Energy.
	
	EFM32G8xx/
	    
	    BSPLIB/
		    SRC/
			INC/
			
		EFM32G890F128/
		
		...	
	...	
	
TI/
    Examples of CoOS for TI.
	
	LM3S9000/
	    
	    BSPLIB/
		    SRC/
			INC/
			
		LM3S9B96/
		
		...	
	...
	
Nuvoton/
    Examples of CoOS for Nuvoton.
	
	NUC1xx/
	    
	    BSPLIB/
		    SRC/
			INC/
			
		NUC140/
		
		...	
	...
		
NXP/
    Examples of CoOS for NXP.
	
	LPC17xx/
	    
	    BSPLIB/
		    SRC/
			INC/
			
		LPC1766/
		
		...	
	...
	
Holteck/
    Examples of CoOS for Holteck.  
    
	HT32F125x/
	    
	    BSPLIB/
		    SRC/
			INC/
			
		HT32F1253/
		
		...	
	...
    	
...

/README This file.

/Tools/ Some useful tools.