Technical information

Tasks

EIO0000000638 04/2012

Default Task Configuration

For the XBT GT/GK HMI Controller:

z The MAST task can be configured in Freewheeling or Cyclic mode. The MAST

task is automatically created by default in Cyclic mode. Its preset priority is

medium (15), its preset interval is 20 ms, and its task watchdog service is

activated with a time of 100 ms and a sensitivity of 1. Refer to Task Priorities

(see page 43) for more information on priority settings. Refer to System and Task

Watchdogs (see page 42) for more information on watchdogs.

Designing an efficient application program is important in systems approaching the

maximum number of tasks. In such an application, it can be difficult to keep the

resource utilization below the system watchdog threshold. If priority reassignments

alone are not sufficient to remain below the threshold, some lower priority tasks can

be made to use fewer system resources if the SysTaskWaitSleep function is added

to those tasks. For more information about this function, see the optional SysTask

library of the system / SysLibs category of libraries.

NOTE: Do not delete or change the Name of the MAST task. If you do so,

SoMachine detects an error when you attempt to build the application, and you will

not be able to download it to the controller.