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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 AppendixMailbox Management Routines
| Routine | Attributes | Description |
|---|---|---|
| os_mbx_check | Determines the number of messages that can still be added to the mailbox. | |
| os_mbx_declare | Creates a mailbox object. | |
| os_mbx_init | Initializes a mailbox so that it can be used. | |
| os_mbx_send | Sends a message to a mailbox. | |
| os_mbx_wait | Gets the next message from a mailbox, or waits if the mailbox is empty. | |
| isr_mbx_check | Determines the number of messages that can still be added to the mailbox. | |
| isr_mbx_receive | Gets the next message from a mailbox. | |
| isr_mbx_send | Sends a message to a mailbox. |
note
- The mailbox management routines enable you to send and receive messages between tasks using mailboxes.
- The os_mbx_declare routine is implemented as a macro.
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