Re: Re: Re: query regarding interfacing of ADC/DAC for speech i/p and o/p

Started by Jeff Brower in TMS320c55x12 years ago

Umer- It was pointed out to me that outptr should be initialized to 1 to get the full 4 sec delay: inptr = 0; outptr = 1; Let me...

Umer- It was pointed out to me that outptr should be initialized to 1 to get the full 4 sec delay: inptr = 0; outptr = 1; Let me know if it works, or at least gets you closer. -Jeff ---------------------------- Original Message ---------------------------- Subject: Re: [c55x] Re: Re: query regarding interfacing of ADC/DAC for speech i/p and o/p From: "Jeff Brower" ...


Interfacing the TLV2544 A/D to C5509 DSP

Started by mehdi hosseini in TMS320c55x9 years ago 12 replies

Hi all I am going to use the TLV2544 for reading 3 analog input which come from 3 microphone. I want to read each channel periodically and whit...

Hi all I am going to use the TLV2544 for reading 3 analog input which come from 3 microphone. I want to read each channel periodically and whit specific sampling rate. How can I do this task by using the DMA in C5509? Thanks -- Seyed Mehdi Hosseini


Re: Re: query regarding interfacing of ADC/DAC for speech i/p and o/p

Started by umer...@yahoo.com in TMS320c55x12 years ago

Hi Jeff, Thanks for ur reply. The code snippet that u have mentioned (i.e. loopback) is already working and i hav already tried it out....

Hi Jeff, Thanks for ur reply. The code snippet that u have mentioned (i.e. loopback) is already working and i hav already tried it out. But I just want to store the audio input in some buffer array or any thing else. And then I want to loop it back after sometime (in seconds just like after introducing some delay). Please look in to my code to understand wht i am trying to do. This is my...


Re: Re: Re: query regarding interfacing of ADC/DAC for speech i/p and o/p

Started by Jeff Brower in TMS320c55x12 years ago

Umer- > Thanks for ur reply. The code snippet that u have mentioned (i.e. > loopback) is already working and i hav already tried it...

Umer- > Thanks for ur reply. The code snippet that u have mentioned (i.e. > loopback) is already working and i hav already tried it out. But I just > want to store the audio input in some buffer array or any thing else. And > then I want to loop it back after sometime (in seconds just like after > introducing some delay). Please look in to my code to understand wht i > am trying t


Re: Re: Re: query regarding interfacing of ADC/DAC for speech i/p and o/p

Started by umer...@yahoo.com in TMS320c55x12 years ago

Jeff- Sorry I was out of town so didn't respond you timely No it is not working....even after outptr=1.....now what to do. Ok just ell me is...

Jeff- Sorry I was out of town so didn't respond you timely No it is not working....even after outptr=1.....now what to do. Ok just ell me is there any other way..or how can we improve it...what is the purpose of software delay loop...can't we use it? Ok what to do next? Umer- > > It was pointed out to me that outptr should be initialized to 1 to get the > full 4 sec delay: > > inptr = 0;


Re: Re: Re: Re: query regarding interfacing of ADC/DAC for speech i/p and o/p

Started by Jeff Brower in TMS320c55x12 years ago

Umer- > Sorry I was out of town so didn't respond you timely > No it is not working....even after outptr=1.....now what to do. Ok just > ...

Umer- > Sorry I was out of town so didn't respond you timely > No it is not working....even after outptr=1.....now what to do. Ok just > ell me is there any other way..or how can we improve it.. Please explain "not working". What happens? > .what is the purpose of software delay loop...can't we use it? I thought that's what you wanted, a long delay between output and input. -Jeff


Sample code for interfacing SDRAM in c5509?

Started by kakoutan in TMS320c55x15 years ago

As above,anybody have some sample material to send to me? Am working on a skywalker board now for utilising the sdram for temporary ...

As above,anybody have some sample material to send to me? Am working on a skywalker board now for utilising the sdram for temporary storage purpose,thank


testing of sdram

Started by khem...@spectross.com in TMS320c55x10 years ago 1 reply

hello all we are doing sdram interfacing to tms320c5502 dsp processor.but some problem regarding to testing are occure.i need the...

hello all we are doing sdram interfacing to tms320c5502 dsp processor.but some problem regarding to testing are occure.i need the testing algo for testing the sdram .please guide ma.


Interfacing si3034 to C55x via McBSP

Started by Madhuvanthi Rao in TMS320c55x14 years ago 1 reply

Hello, I am trying to interface the TMS320C5510 to the telephone line through the codec si3034. I am programming the codec...

Hello, I am trying to interface the TMS320C5510 to the telephone line through the codec si3034. I am programming the codec through the McBSP port 2. The interrupts seem to be generated but when I try to go off-hook, it doesn't happen. What coul


Re: Re: Re: query regarding interfacing of ADC/DAC for speech i/p and o/p

Started by Jeff Brower in TMS320c55x12 years ago

Umer- > I couldn't get your second hint related to single circular ....I/O pointer shifted > tio each others.So far as your point of not...

Umer- > I couldn't get your second hint related to single circular ....I/O pointer shifted > tio each others.So far as your point of not debugging my assignment is concerned, > let me tell you that after this preliminay set up (just to verify the correct > working of DSK's CODEC) I have to undergo a detailed course of DSP alongwith DSK > training. So plz change your mind that i am getting my


Re: query regarding interfacing of ADC/DAC for speech i/p and o/p

Started by umer...@yahoo.com in TMS320c55x12 years ago

Jeff- Actually when i run this code a shrill sound is heard from headphones and then every thing stops. And then sometimes nothing comes out...

Jeff- Actually when i run this code a shrill sound is heard from headphones and then every thing stops. And then sometimes nothing comes out (nothing happens). When i use software delay loop like: Uint32 delay; DSK5510_AIC23_CodecHandle hCodec; Int16 i,sample,left,right; DSK5510_init(); hCodec = DSK5510_AIC23_openCodec(0, &config); while(true) { /*Read a sample from ...


Re: Re: query regarding interfacing of ADC/DAC for speech i/p and o/p

Started by Jeff Brower in TMS320c55x12 years ago

Umer- > Jeff- > Actually when i run this code a shrill sound is heard from headphones and > then every thing stops. And then sometimes...

Umer- > Jeff- > Actually when i run this code a shrill sound is heard from headphones and > then every thing stops. And then sometimes nothing comes out (nothing happens). C'mon Umer, you have to debug -- that's the nature of engineering. Now you're finding out that engineering is 20% fun (design) and 80% hard work (debug, test, documentation, etc). Hope you're ready for that. If yo


Interfacing with MCBSP on the 5510 DSP

Started by dementedstatus in TMS320c55x11 years ago 3 replies

Hi, I'm having trouble performing a simple interface with the MCBSPs on the board. My main goal right now is just to write a value to a...

Hi, I'm having trouble performing a simple interface with the MCBSPs on the board. My main goal right now is just to write a value to a MCBSP and read the value back out. My main problem is although I initialize MCBSP for both transmit and receive with MCBSP_start(hMcbsp0, MCBSP_RCV_START | MCBSP_XMIT_START | MCBSP_SRGR_START| MCBSP_SRGR_FRAMESYNC, 0). After writing a value to hMcbsp0,...


query regarding interfacing of ADC/DAC for speech i/p and o/p

Started by jain alpana in TMS320c55x15 years ago

hello everybody i m an student doing project "Real time implementation of G.723.1 on TMS320VC5510" right now i am ready with...

hello everybody i m an student doing project "Real time implementation of G.723.1 on TMS320VC5510" right now i am ready with optimised code which is running in CCS simulator by taking i/p from file and putting o/p in2 file but now my next step is to run it in to


interfacing SDRAM with c5502

Started by vishnu_0806 in TMS320c55x12 years ago 2 replies

hai friends, my name is vishnu. i have been working with C5502 for some time for my current project. coding is done in CCS2. in our...

hai friends, my name is vishnu. i have been working with C5502 for some time for my current project. coding is done in CCS2. in our DSP board an SDRAM is also connected. i have to configure the SDRAM. i have tried so many ways but i am not able configure the SDRAM correctly. the sdram used is MT48LC2M32B2.. it is a 512K*32*4 bank SDRAM. I have been using csl library.. but i am no...


Interfacing TMS320VC5509A with PC

Started by mvpr...@gmail.com in TMS320c55x9 years ago 11 replies

Hello, I need to interface TMS320VC5509A with PC.... 5509A offers SPI,HPI,USB communication,but i need RS232 communication, since it...

Hello, I need to interface TMS320VC5509A with PC.... 5509A offers SPI,HPI,USB communication,but i need RS232 communication, since it will be easy for read/write operation using VB6.... Is there any specific interface IC to convert avaliable protocol to RS232 protocol?.... Waiting for your reply.... Regards Pradeep


C5510 DSK interfaced t o Si3034 DAA chip

Started by madhuvan4 in TMS320c55x11 years ago

Hello , I have configured Si3034 chip through McBSP2 port. I am able to write to the control registers, but I am not able to read back the...

Hello , I have configured Si3034 chip through McBSP2 port. I am able to write to the control registers, but I am not able to read back the control registers that I have configured. Any clue why? Has anybody worked on interfacing this chip with C55x? Thanks,


Interfacing TLV571 EVM to C5510 DSK

Started by almuaddi in TMS320c55x16 years ago

Hello All, I have the TMS320C5510 DSK board and the TLV571 EVM board. The TLV571 is a A/D daughtercard that can sample up at...

Hello All, I have the TMS320C5510 DSK board and the TLV571 EVM board. The TLV571 is a A/D daughtercard that can sample up at 1.25 MSPS. I would like to interface the two so that I can sample an analog signal and dump the digitized waveform in the 8 MB of external memory provid


Re: query regarding interfacing of ADC/DAC for speech i/p and o/p

Started by umer...@yahoo.com in TMS320c55x12 years ago 1 reply

Hi Dear, So did u find answer to your query? I am really a new comer in DSP domain and unknown to working C5510 in detail. I want to...

Hi Dear, So did u find answer to your query? I am really a new comer in DSP domain and unknown to working C5510 in detail. I want to read audio input from mic and store it.Then i want to play it back to headphone. This is my main(): void main() { DSK5510_AIC23_CodecHandle hCodec; Int16 i,j,k,left,right; Int16 input1[8000]; Int16 input2[8000]; /* Initia...


Interfacing external SDRAM

Started by Ravikanth M in TMS320c55x17 years ago

Hi, I am working on OMAP1510 board. I need to interface external SDRAM with DSP(C55x), without using ARM. I tried using EMIF...

Hi, I am working on OMAP1510 board. I need to interface external SDRAM with DSP(C55x), without using ARM. I tried using EMIF configuration manager in DSP BIOS cdb file but could not succeed. Shall I need to do anything else after inserting EMIF configuration in cdb file?