CMX Real Time Operating System

• Supports nested interrupts
• No royalties on embedded code
• All source code supplied
• Extremely fast context switch times
• Very low interrupt latency times
• Several C vendors supported
• Scheduler and interrupt handler written in assembly for speed and optimization
• All CMX functions contained in library
• User configurable
• Task management

• Event management
• Timer management
• Message management
• Circular queue management
• Resource management
• Semaphore management
• Fixed block memory management
• Specialized UART management
• Automatic power down management
• Full pre-emption and ability to also have cooperative and time slice scheduling

• Create a task
• Remove a task
• Start a task
• Suspend a task, with time-out provision
• Wake a suspended task
• Forcefully wake a task
• Change a task's priorit
• Terminate a task early
• Do a cooperative rescheduling
• Disable task scheduling
• Enable task scheduling
  
  Event Management
• Wait on event(s), with time-out provision
• Set an event
• Clear an event
  
  Message Management
• Get a message
• Wait for a message, with time-out provision
• Send a message
• Send a message, wait for reply
• Wake task that sent message, if waiting on reply
• Wait on Mailbox(s), with time-out provision.
  
  Queue Management
• Create a circular queue
• Reset queue to empty
• Add to top of queue
• Add to bottom of queue
• Remove from top of queue
• Remove from bottom of queue
  
  Time Management
• Create a cyclic timer
• Change a cyclic timer event parameters
• Start a cyclic timer
• Restart a cyclic timer
• Restart a cyclic timer, with new initial time period and/or new cyclic time period
• Stop a cyclic timer

Memory Management
• Create a fixed block pool Request free block from pool
• Release block back to pool
  
  Resouce Management
• Get a resource
• Reserve a resource, with time-out provision
• Release a resource
  NOTE: the resources have Automatic Priority Inheritance and highest task waiting on resource will become the owner, when resource is released. 
  
  Semaphore Management
• Get semaphore
• Pend for semaphore, with time-out provision
• Post to semaphore
• Flush semaphore
  
  System Management
• Initialize CMX
• Enter CMX
• Enter interrupt
• Exit interrupt
• Enter power down mode 
  
  Uart Management
• Initialize UART
• Put UART char, with time-out provision
• Put UART string, with time-out provision
• Get UART char, with time-out provision
• Get UART string, with time-out provision
• Update UART buffer(s)
• Initialize UART buffer(s)
  
  Kernel Awareness
• CMXKAware(tm) kernel awareness
  
  Debugger
• CMXBug(tm) interactive debugger
  
  Task Flow Analyzer
• CMXTracker(tm) analyzer

CMX-TINY+^™

• Control tasks
• Control events
• Control messages
• Control resources
• Control cyclic timers
• Control Semaphores (version 2.00 and up only)

• Interrupts allowed to signal tasks
• True preemption
• Cooperative scheduling allowed
• EXTREMELY Small RAM/ROM size
• Fast context switch times
• Low interrupt latency