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This function performs diagnostic measurements on the tuning interface that carries commands from the AWE Server to the target. This is handy to have when porting AWE Core to a new target. The functionality can be accessed via the ‘Tools Tuning Interface Test’ menu item. Test results indicate the interface speed under various conditions. For more information, see the user forum at www.dspconcepts.com.

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Flash Manager Tool

The Flash Manager tool, which is delivered as part of the AWE Server, enables users to easily add and remove Audio Weaver Binary files (*.awb) on targets that support flash file systems. Once added to flash, the .awb file will be loaded by the AWE Core at boot-time and the target can run in stand-alone operation. See the next section ‘Using the Flash Manager’ for instructions on how to do this.

Note that another alternative for stand-alone operation is to store the .awb contents in a C array and compile it into an application directly. This method can be used on targets with or without a flash file system. For more information on this, see section 2.3.2 of the ‘AWE Core – Integration Guide.pdf’ available at https://dspconcepts.com/support .

Using the Flash Manager Tool

1. Generate an .awb file for your desired Audio Weaver design (.awd) in Designer by going to ‘Tools -> Generate Target Files’.

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2. Select ‘AWB’ target file type and choose the directory to which the .awb file will be saved.  Change the ‘Save Basename’ field to a name that is less the 16 characters, then hit the “Generate” button.  It will then start compiling the system for creation of the .awb file. 

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3. Once the .awb file has been successfully generated, the following window will appear:

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4. In AWE Server, select ‘Target -> Change Connection’ and connect to your target with the appropriate option.

5. In AWE Server, select ‘Flash -> Flash Manager’.  Then press “Add File” button.

6. Browse to the previously-created .awb file and select it as the input file.  Ensure that the file type is “Compiled Script” and check the box next to “Boot file” to designate this file to be used at boot-up (attribute = 26). Click the “Add” button to load the file into memory.

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7. Once the progress completes, click “OK”.

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8. After the file has been added, it will show up in the list “Flash file system on target” in the Flash Manager window. When you reset your target hardware and reconnect AWE Server to it, you should see a non-zero CPU % and heap allocated in the AWE Server, which indicates that the layout is indeed running.

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Overflow Detection

On certain targets, AWE Core will detect any overflow conditions while a layout is running and present this information in AWE Server. An “overflow” occurs when the previous pump is not completed before attempting to schedule the next pump. The overflow logic is capable of detecting overflows in any of the sublayouts in a multi-rate layout.

When an overflow is detected, the AWE server is notified through the tuning interface, and the following indicators are updated in AWE Server.

• The CPU usage progress bar will turn Red, indicating that the CPU usage has exceeded 100 %. If the overflow condition is transient in nature, it is possible that the cpu bar may not show this condition.

• The overflow detection LED (red dot) in the top right corner turns ON. The LED will stay ON until the Design is stopped, thus alerting the user of the overflow in the current run.

• The CPU overflows counter on the top right corner counts the number of overflows detected across the layout (including clock divided sublayouts) until the Design is stopped. This count indicates that one or more overflows happened since the last time AWE Server queried the target for profiling values (by default this is done at 10 Hz). In theory the server could have missed some overflow events occurring at the target between the last query and the current query. As a result, this counter may not reflect the exact number of overflows occurring on the target.

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