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Technical Support
On-Line Manuals
RL-ARM User's Guide (MDK v4)
RL-RTX
Overview
Product Description
Product Specification
Technical Data
Timing Specifications
Advantages
Your First RTX Application
Theory of Operation
Timer Tick Interrupt
System Task Manager
Task Management
Idle Task
System Resources
Scheduling Options
Pre-emptive Scheduling
Round-Robin Scheduling
Cooperative Multitasking
Priority Inversion
Stack Management
User Timers
Interrupt Functions
Configuring RL-RTX
Configuration Options
Tasks
Stack Size
Stack Checking
Run in Privileged Mode
Hardware Timer
Round-Robin Multitasking
User Timers
FIFO Queue Buffer
Idle Task
Error Function
Create New RTX_Config.c
Configuration Macros
Alternate Tick Timer
Low Power RTX
Library Files
Using RL-RTX
Writing Programs
Include Files
Defining Tasks
Multiple Instances
External References
Using a Mailbox
SWI Functions
SVC Functions
Debugging
System Info
Task Info
Event Viewer
Usage Hints
ARM7/ARM9 Version
Cortex-M Version
Create New RTX Application
Function Reference
Event Flag Management Routines
Mailbox Management Routines
Memory Allocation Routines
Mutex Management Routines
Semaphore Management Routines
System Functions
Task Management Routines
Time Management Routines
User Timer Management Routines
RL-FlashFS
RL-TCPnet
RL-CAN
RL-USB
Example Programs
Library Reference
Appendix
Usage Hints
Here are a few hints to help you if you run into problems when using the RTX kernel.
Function usage
- Functions that begin with os_ can be called from a task but not from an interrupt service routine.
- Functions that begin with isr_ can be called from an IRQ interrupt service routine but not from a task.
- Never call isr_ functions from FIQ (ARM7™, ARM9™) interrupt functions or from the task.
- Never call tsk_lock() or tsk_unlock() from an interrupt function.
- Before the kernel starts, never enable any IRQ interrupt that calls isr_ functions.
Because of a two different implementations of RTX Kernel Library further hints depend on the Library version being used:
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