RTX51: WHICH SYSTEM FUNCTIONS ALLOW A TASK SWITCH

Information in this article applies to:

• RTX51 Version 3.10

QUESTION

Which RTX51 System Functions allows a task switch to occur, assuming I am not using Round-Robin?

ANSWER

At the end of all RTX51 System Function calls, the system checks the status of all tasks. If one task has become ready to run and has a higher priority than the one executed, then a task switch occurs.

The following system calls may set a task into the READY state. The task with the highest priority in the READY state is executed:

• os_send_signal
• isr_send_signal
• os_send_message
• isr_send_message
• os_send_token

MORE INFORMATION

• Refer to Task Management in the RTX51 Tiny User's Guide.
• Refer to Round-Robin Task Switching in the RTX51 Tiny User's Guide.
• Refer to Cooperative Task Switching in the RTX51 Tiny User's Guide.

Last Reviewed: Friday, July 15, 2005