hil_monitor_start :: QUARC MATLAB Functions

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hil_monitor_start

Deprecated

The HIL API MATLAB functions have been deprecated in favour of the new quanser.hardware.hil class, which has support for code generation for Quanser targets. Hence, with the new hil class it is possible to run MATLAB scripts in real-time on Quanser targets, while making use of the Quanser hardware.

Starts a monitor.

Syntax

err = hil_monitor_start(monitor)

Description

Starts a monitor. The monitor will begin querying the status of the interrupt sources associated with the monitor. The monitor may be stopped using the hil_monitor_stop function. Since the hil_monitor_read_interrupt function blocks and MATLAB is not multi-threaded, it is often preferable to use the hil_poll_interrupt function instead of monitors.

If no err output is provided then it throws an exception if an error occurs. In generated code it prints the error message. Use hil_get_error_message to get the message associated with an error code.

Parameters

monitor

The monitor handle returned by hil_monitor_create_interrupt_reader.

Outputs

err

A negative error code or zero on success.

Examples

        monitor = hil_monitor_create_interrupt_reader(board, 0);
        hil_monitor_start(monitor);                         % Start the monitor
        for i=1:10
            states = hil_monitor_read_interrupt(monitor);   % Queries interrupt source 0. Does not return until the interrupt occurs.
            ...
        end;
        hil_monitor_stop(monitor);  % Always good to call hil_monitor_stop even if monitor stops itself
        hil_monitor_delete(monitor);