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SigmaStudio and SHARC 21569 fir accelerator

Category: Software
Product Number: EV-SOMCRR-EZKIT connected to a EV-21569-SOM board
Software Version: CCES 2.11.1 and sigmastudio for SHARC 4.7

Hi,

I used the LibIntegration example project to load sigmastudio code and pass audio through SPORT 4A and 4B. i tried to add the FIR accelerator code to the project right before the sigmastudio adi_ss_schematic_process function call. but I'm getting a "Input buffer overflow detected" error. is this the right way of integrating an FIR accelerator to this project? or is there any example project where i could get a reference to how to use a fir accelerator for continuous audio playback.

I'm attaching both the project files, orginal project and with FIR accelerator integrated within that project. 

LibIntegrationExample_Core1_fir.rarLibIntegrationExample_Core1_original.rar



added files
[edited by: TechInAudio at 11:33 PM (GMT -4) on 21 Mar 2023]
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  • Hi,
    If you are using SigmaStudio for SHARC the FIR/IIR accelerators already available as a modules, I am not sure what your are implement. The overflow error will be observed when you halt and run the core because of "nDataAvail" variable is used in ISR. Make sure whether "Mask Interrupts during step" option is enabled.

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  • Hi,
    If you are using SigmaStudio for SHARC the FIR/IIR accelerators already available as a modules, I am not sure what your are implement. The overflow error will be observed when you halt and run the core because of "nDataAvail" variable is used in ISR. Make sure whether "Mask Interrupts during step" option is enabled.

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