Re: What does the DSPBRIDGE do?

Re: What does the DSPBRIDGE do?

[Roger Quadros]

ext Elvis Dowson wrote:
> Hi,
>     I was wondering what the DSPBRIDGE does?
> 
It is an interface between ARM core and DSP core. You can use the bridge
to load firmware into DSP, control its execution and allow data communication,
e.g. MP3 stream input and PCM data output.

> I've used TI code composer studio in the past, and was wondering if that 
> compiler is required to compile programs for the DSP available on the TI 
> OMAP 3530.
> 
> In terms of compiler infrastructure, can the current arm gcc tools be 
> used for both the arm core and the dsp part? Or do you need to use TI 
> CCS for the dsp part?
> 
you need separate compiler (i.e. CCS) to build code for DSP (i.e. CODECs). DSP 
will have C5000 or C6000 core (C64x in case of 3530) and not ARM core.

ARM gcc is used only to build the Linux DSPbridge driver.

> Best regards,
> 
> Elvis
> 
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Re: What does the DSPBRIDGE do?

[Ameya Palande]

Hi Elvis,

ext Elvis Dowson wrote:
> Hi Vladimir,
> 	
> On Aug 13, 2009, at 11:41 AM, Vladimir Pantelic wrote:
> 
>> Elvis Dowson wrote:
>>> Hi,
>>> 	I was wondering what the DSPBRIDGE does?
>> it allows the arm to load/run code on the dsp
> 
> And this code would be compiled and linked using the ti dsp compiler?  
> what role will the arm gcc compiler play, when using ti dsp compiler?
> 
> Are there some examples this?
> 
> Best regards,
> 
> Elvis
> --
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I guess you need TI compiler only for compiling Codes which run on DSP, rest of
the stuff can be compiled using arm-gcc.

Cheers,
Ameya.

RE: What does the DSPBRIDGE do?

[Ramirez Luna, Omar]

Hi Elvis,

>-----Original Message-----
>From: linux-omap-owner@vger.kernel.org [mailto:linux-omap-owner@vger.kernel.org] On Behalf Of Ameya
>Palande
>Subject: Re: What does the DSPBRIDGE do?
>
>Hi Elvis,
>
>ext Elvis Dowson wrote:
>> Hi Vladimir,
>>
>> On Aug 13, 2009, at 11:41 AM, Vladimir Pantelic wrote:
>>
>>> Elvis Dowson wrote:
>>>> Hi,
>>>> 	I was wondering what the DSPBRIDGE does?
>>> it allows the arm to load/run code on the dsp
>>
>> And this code would be compiled and linked using the ti dsp compiler?
>> what role will the arm gcc compiler play, when using ti dsp compiler?
>>
>> Are there some examples this?
>>


You can also checkout our portal in omapzoom, if you need a more technical overview about dspbridge you can check out in the Docs section: db_linux_rguide.pdf & db_linux_pguide.pdf

https://www.omapzoom.org/gf/project/omapbridge/wiki/?

Samples to the code are at:

DSP Bridge Userspace gitweb: 
http://dev.omapzoom.org/?p=tidspbridge/userspace-dspbridge.git;a=summary

DSP samples (code running in the dsp, either baseimage or dll): source/samples/dsp

MPU samples (arm side app using bridge to interact with the dsp): source/samples/mpu/src

As mentioned before:

GCC compiler will take care of bridge driver (compiled in the kernel), libbridge.so (API) and samples (in case youe need them). CGT Tools and DSP/BIOS package is used to generate the code which will be running on the dsp side.

You can look here for initial environment setup:
https://www.omapzoom.org/gf/project/omapbridge/wiki/?pagename=Build+userspace+files

>> Best regards,
>>
>> Elvis
>> --
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>> the body of a message to majordomo@vger.kernel.org
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>
>I guess you need TI compiler only for compiling Codes which run on DSP, rest of
>the stuff can be compiled using arm-gcc.
>
>Cheers,
>Ameya.
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- omar