McBSP Interfacing Question

Started by Barry in comp.dsp16 years ago 5 replies

Hi all, I'm writing a driver to allow me to communicate from my C6711 to the TLV320AIC23EVM Audio Codec. This communication involves writing...

Hi all, I'm writing a driver to allow me to communicate from my C6711 to the TLV320AIC23EVM Audio Codec. This communication involves writing the control registers via mcbsp1 and streaming the audio data via mcbsp0. I'm currently trying to write to the control registers on the codec but I'm not sure if I'm doing it right. I have jumped JP1 on my DSP board to connect mcbsp0 to the AIC23 daug...


How to measure C6711-McBSP1-DX1-signals on a scope/LA ?

Started by olaf636 in comp.dsp16 years ago 4 replies

hey folks, i have to display the high/low-signals of the McBSP1-DX1-pin on a scope or a logic analyzer, but all i get is a 3,3-v-signal...

hey folks, i have to display the high/low-signals of the McBSP1-DX1-pin on a scope or a logic analyzer, but all i get is a 3,3-v-signal without any changings. so if i send a "0" "1" or "2"... to the pin in digital-loopback-mode i can`t see anything on the scope, no peak, nothing... in CSS 2.0 the register "DX1" is counting, but i want to proof it out of the software........ can anyb...


an old question about buying dsp starter kit

Started by lovedsp in comp.dsp16 years ago 2 replies

I am learning how to implement DSP algorithms on hardware now and I plan to buy a DSK. It is a quite old question and I have done some research...

I am learning how to implement DSP algorithms on hardware now and I plan to buy a DSK. It is a quite old question and I have done some research on the news group. what kind of board fits me well? I have several ideas: for second hand 1)TI C6711/C6211 DSK, they are old but they can be acquired as second hand items from ebay and cheap. (a bad news I heard from my friend is, the 6211 DSK h...


Phase Irregularities with DSKC6711 and AIC23EVM Codec

Started by Joseph Lyons in comp.dsp15 years ago 2 replies

Hi all, I'm a student and I've written a driver to allow me to communicate between my DSK C6711 and my AIC23EVM codec. All is working fine...

Hi all, I'm a student and I've written a driver to allow me to communicate between my DSK C6711 and my AIC23EVM codec. All is working fine but I've noticed that when I output samples to my DAC and read the resulting analog signal back via my ADC, I'm not getting back the expected samples every time I execute my program - there is a varing phase difference between what I output and what I r...


RTDX Interupt Problem (Probably)

Started by jcockburn in comp.dsp13 years ago 1 reply

Hi, I'm doing a student project and I have made a simple graphic equalizer using a c6711 DSK. I am trying to write a host application to put a...

Hi, I'm doing a student project and I have made a simple graphic equalizer using a c6711 DSK. I am trying to write a host application to put a pretty user interface on the equalizer using RTDX (JTAG, not HSRTDX) to send the positions of several sliders to the DSK. I have successfully written the host program, and a corresponding target application that reads the values that are written and p...


Simulink+(PC or DSP) for real time?

Started by MA in comp.dsp10 years ago 9 replies

Dear all, I need to implement a real-time feedback ANC (active noise control) algorithm, and I'd like to know what you experts think, should I...

Dear all, I need to implement a real-time feedback ANC (active noise control) algorithm, and I'd like to know what you experts think, should I try to run it on a PC with Simulink and a RME soundcard, or on a C6711 DSP board with code generated by Simulink? Latency is critical for the performance of the algorithm. I have made a new .dll with ASIO drivers for the "From Audio Device" block in Simu...


question on DSP book by Rulph Chassaing

Started by Mon in comp.dsp14 years ago 1 reply

Hi All, Recently I have purchased a book by Rulph Chassaing, "Digital Signal Processing and Applications with the C6713 and C6416 DSK". The book...

Hi All, Recently I have purchased a book by Rulph Chassaing, "Digital Signal Processing and Applications with the C6713 and C6416 DSK". The book comes with a CD with all the codes which the book refers to. My question is the entire book refer to C6713 and special file "dskC6713_init.c", however there is no C6713 support on CD but there is C6711 code on CD. Am I missing something? Thanks, M...


interrupts and delays

Started by johnstokes in comp.dsp10 years ago 2 replies

hi I am using A C6711 dsp. I have an interrupt that operates at 16kHz. I want to add a LCD initialisation routine onto this interrupt, since...

hi I am using A C6711 dsp. I have an interrupt that operates at 16kHz. I want to add a LCD initialisation routine onto this interrupt, since i will only call LCD init once on power up and then not call it again. I am unsure of generating delays in the ISR though for the LCD. The system clock is 100Mhz and the ISR is 16khz So for 2 ms delay in the ISR for the LCDinit can i just use a si...


Urgent: Flash.exe problem

Started by Hamid in comp.dsp16 years ago 4 replies

Hello everybody I am using DSK c6711 and I'm trying to program the flash memory. I started with the examples of TI. I am using flash.exe...

Hello everybody I am using DSK c6711 and I'm trying to program the flash memory. I started with the examples of TI. I am using flash.exe from : C:\ti\examples\dsk6711\board_util\flash\Host\Debug> flash post.hex and it gives me following message: TMS320C6211/6711 DSK Flash Programming Utility, Version 2.04, May 2001 Copyright (c) 2001 by Texas Instruments Incorporated. All rights re


c6x: digitrev for complex values

Started by Barry in comp.dsp16 years ago 1 reply

Hi, I got this function of TI's site for the c6711 - void digitrev(int *x, unsigned int *index, int n, int radix) { int i,j,a,b; int...

Hi, I got this function of TI's site for the c6711 - void digitrev(int *x, unsigned int *index, int n, int radix) { int i,j,a,b; int xi, xj; int nbits, nbot, ntop, ndiff, n2, astep, radN; /* short leftzeros; */ int *xs = (int *) x; nbits = 0; i = n; while (i > 1) { i = i > > 1; nbits++; } radN = 0; i = radix; while (i > 1) { i = i > > 1; radN++;


Is it worth it to buy used c6211 starter kit

Started by Bob B in comp.dsp15 years ago 2 replies

I took 3 DSP courses in university but all our projects/labs were done using matlab. I would like to gain some more practical dsp experience. I...

I took 3 DSP courses in university but all our projects/labs were done using matlab. I would like to gain some more practical dsp experience. I have used a c6211 kit in the past to do some dsp programming in my spare time. I am thinking about buying a used c6211 starter kit. Is this kit worth buying or should I buy the more recent c6711 or c6713 dsk.


EDMA transfer problem on C6711

Started by Barry in comp.dsp16 years ago 7 replies

Hi, I was wondering if you could help me sort out a problem I'm having with my EDMA transfer. I'm working with the C6711DSK and the...

Hi, I was wondering if you could help me sort out a problem I'm having with my EDMA transfer. I'm working with the C6711DSK and the AIC23EVM Codec. The problem is that when I use EDMA transfering, I'm losing every second input and output sample. I have the sample rate set as 88200Hz, but when I output a 1k signal, I get a 500Hz signal. When I input a 1kHz signal to the codec, I get 500 ...


Quantization Noise Current Spectral Density

Started by Barry in comp.dsp16 years ago 2 replies

Hi, I trying to calculate the Quantization Noise Current Spectral Density with regard to the ADC input of my system. My system includes a...

Hi, I trying to calculate the Quantization Noise Current Spectral Density with regard to the ADC input of my system. My system includes a C6711 DSK and an AIC23EVM Codec. I think I'm right in saying that the formula for Quantization Noise Current Spectral Density is given by - ((V/2^Q)^2)/6TR^2 where V is the voltage range at the ADC, Q is the number of bits - quatization, T is the...


SPP EPP

Started by Peter Choi in comp.dsp15 years ago 2 replies

Hello, Just tried out the utilities that came with the TI C6711 DSK. There is this DOS based Test C6x11 DSK Ports and produced the following...

Hello, Just tried out the utilities that came with the TI C6711 DSK. There is this DOS based Test C6x11 DSK Ports and produced the following outputs: Address 378, SPP Mode=Pass Address 378, EPP Mode=Fail Address 278, SPP Mode=Fail Address 278, EPP Mode=Fail . . Test Complete - No Configuration Performed. Can someone tell me what those mean?