Audio Capacitive Touch Booster Pack Software

Chris Watts said:

why doesnt the product have a debugger built onto it?

Q: Can I debug the C5535 DSP by connecting to the JTAG header?
A: No. To protect licensed MP3 encode and decode source code the JTAG of the C5535 DSP on each ACTBP is disabled

Q: How can I debug the C5535 DSP?
A: Use the C5535 eZdsp. The ACTBP provides a black box MP3 player/recorder to the MSP430 LaunchPad. MSP430 debugging is provided but DSP debugging is disabled. The C5535 eZdsp development kit shares almost identical schematics (without the MSP430, capacitive touch, and TRRS headset jack).

At least TI let you see the G2553 side. Source code and all.

But after I looked at that source code. I consider this BoosterPack as a "con-motion" rather than a promotion.

I agree completely with old_cow_yellow.  The marketing materials for the Audio Captouch Boosterpack (ACTBP) are vague at best, and one section declares:

"Easily upgrade low-power applications with TI’s new C5000 DSP-based Audio Capacitive Touch BoosterPack for the MSP430 LaunchPad development kit. For the first time, new functionalities can be enabled on the DSP and controlled solely by the MCU, including crystal clear audio capabilities."

Does THAT sound like a DSP development kit to you?  Yes, it does!

I think a disclaimer should be placed on the ACTBP to keep excited users (like me) from purchasing this as a DSP development platform.

What's worse, I submitted a General Tech Support email advising this fact and got the following interesting, terse reply:

"The ACTBP is the C5000. Those are the acronyms for the device name Audio Capacitive Touch BoosterPack."  Very unhelpful.

I still haven't identified a way to communicate this problem directly to TI marketing.  I feel like I should have a credit of the ACTBP purchase price toward an eZdsp 5535 USB stick SDK.

-Eric

i know! its not a development kit!

i tried emailing someone at TI with no success.. all i want, is an image for the current board (similar to a hex file for PIC) you cant really reverse engineer a program from it but it would mean the board could be returned to its previous state.. and a different piece of software, without the encoder, that can be shared and distributed!!

it seems so annoying, and while they say the JTAG is disabled, can the device not be wiped and started new?

why didnt they put a USB JTAG on the board.. its so stupid and very misleading to call it a development board.. take microchips DM320004, now thats a development board! just plug the usb cable in, drivers.. of you go! 

Another fustrated hobbyst here..I also thought DSP code can be developed :(

Just one curiosity..which method they used to disable the JTAG? There is a SW way? or is an specific HW?

Take a look here.

It seems they used a HW method.

Just wanted to add my frustration to this thread as well ... I shouldn't have bought these boards in the 1st place.

I'm also interested in using the same platform to develop DSP code. However, it's a shame that TI chose to make this platform (not much of one..) closed. Can someone from TI let us know if it's possible to release the DSP source, minus the mp3/licensed parts? It would help my university project greatly!

I have been trying to do a few changes on the basic functionalities of ACTBP without success. I wish to look at the demo source code of ACTBP, hoping that I can modify it accordingly. Can anyone post links where I can find this code?

Here is the link:

http://processors.wiki.ti.com/index.php/Audio_Capacitive_Touch_BoosterPack_C5535_Software

Regards.

Hi Steve,

i have some trouble with the developing the software for Audio Capacitive Touch Booster Pack. I have got both Audio Capacitive Touch Booster Pack with host MSP430 Launchpad and ezdsp5535, as i know both base on TMS320C5535. I wrote simple program basing on "uart" example. The main objective of the program is receiving the uart data and print it on the oled display. My template program is attached bellow:

2555.uart.zip

When i run this program on ezdsp5535 via on board XDS100v2 USB emulator everything works well. I try create boot image for sd card using hex55 tool. When I plug the sd card to ezds5535 the initialization of the OLED is done properly but it seems as some problem with UART transmission. When I put the same sd card into ACTBP there is no action and no initialization presented on the OLED display.

Have you ever met this problem? Is there possibility to develop new APPs for ACTBP or is it only work with provided image for MP3 encoding? May be there are some templates for ACTBP for developers?

Regards

Because of MP3 licensing agreement, the C5535 cannot be accessed directly via any external peripherals. It is only controllable via MSP430. Please refer to this page for more details:

http://processors.wiki.ti.com/index.php/Audio_Capacitive_Touch_BoosterPack

Regards.

I truly agree with your point of view related to MP3 license protection, but as i know TI provide MP3 codec. I don't want to do a reverse engineering, but i want use the ACTBP as ie. sound effect and change delay or filters via Capacitive Interface. Is it possible to offload the code to C5535 (or boot from customized image)? Even using the external XDSxxx?

In particular I want to use an audio input and output for DSP like processing without MP3 encoding.

To summarize my question, i would like to know if it is possible to develop own DSP application for ACTBP, or it works only with native ACTBP image?

Regards,

Only native ACTBP image.