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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 AppendixError Function
Some system error conditions can be detected during runtime. If RTX kernel detects a runtime error, it calls the os_error() runtime error function.
void os_error (U32 err_code) {
/* This function is called when a runtime error is detected. */
OS_TID err_task;
switch (err_code) {
case OS_ERR_STK_OVF:
/* Identify the task with stack overflow. */
err_task = isr_tsk_get();
break;
case OS_ERR_FIFO_OVF:
break;
case OS_ERR_MBX_OVF:
break;
}
for (;;);
}
The error code is passed to this function as a parameter err_code:
| Error Code | Description |
|---|---|
| OS_ERR_STK_OVF | The stack checking has detected a stack overflow for the currently running task. |
| OS_ERR_FIFO_OVF | The ISR FIFO Queue buffer overflow is detected. |
| OS_ERR_MBX_OVF | The mailbox overflow is detected for isr_mbx_send() function. |
The runtime error function must contain an infinite loop to prevent further program execution. You can use an emulator to step over infinite loop and trace into the code introducing a runtime error. For the overflow errors this means you need to increase the size of the object causing an overflow.
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