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RL-ARM User's Guide
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 RTX Kernel Basic RTX Configuration Tasks Stack Size Stack Checking Run in Privileged Mode Hardware Timer Round-Robin Multitasking User Timers FIFO Queue Buffer Error Function Idle Task Advanced RTX Configuration HW Resources Required Configuration Macros Library Files Using RTX Kernel 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 ARM Version Cortex 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 AppendixHardware Timer
The following #defines specify how the RTX kernel's hardware timer is configured:
- OS_TIMER specifies the on-chip timer used as a time-base for the real-time system. It delivers a periodic interrupt that wakes up a time-keeping system task. The user can choose which timer serves this purpose. Use 0 for Timer 0, or 1 for Timer 1.
#define OS_TIMER 1
- OS_CLOCK specifies the input clock frequency for the selected timer. This value is calculated as: f(xtal) / VPBDIV. Example is for 15 MHz at @ 60 MHz CPU clock and VPBDIV = 4
#define OS_CLOCK 15000000
- OS_TICK specifies the timer tick interval in µsec. Recommended values are 1000 to 100000. The resulting interval is from 1 ms to 100 ms. Default configuration is for 10 ms.
#define OS_TICK 10000
Note
- Hardware Timer configuration is required only for ARM7™ and ARM9™ RTX Library version. The Cortex™-M version uses a common SysTick timer for all Cortex™-M device variants.
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