Seeking advices for starting a project.

Started by msha...@gmail.com in Analog Devices DSPs7 years ago 1 reply

We are starting a new project for developing an Electrocardiograph. We have an Acquisition module which gives 12 channel information from 12...

We are starting a new project for developing an Electrocardiograph. We have an Acquisition module which gives 12 channel information from 12 leads. We are planning to use ADSP BF 527 to acquire ECG samples from the acquisition module and transfer the samples as packets using USB 1.1 of blackfin to a host processor running an embedded OS. I wish to get some information to get a start. The ba...


waking the BF from sleep/deep-sleep with an external trigger from CODEC

Started by chagai_e in Analog Devices DSPs7 years ago 1 reply

Hi All, I'm using the BF 518 EZ-Board. I'm in the proccess of designing my own custom board and need advice: My application is a real time...

Hi All, I'm using the BF 518 EZ-Board. I'm in the proccess of designing my own custom board and need advice: My application is a real time low power application in which the dsp should be 'asleep' most of the time (in order to save battery power). I would like it to be a waken by an external codec's trigger lets say acordding to a level of gain (sound / noise). is there a way of doing it...


Boot flash image for ADSP-21065 EZ-LAB

Started by Alexander Perkalsky in Analog Devices DSPs7 years ago 7 replies

Dear friends, I have some problems while experimenting with ADSP-21065 EZ-LAB kit. I have an old version, with RS-232 comms to PC and bundled...

Dear friends, I have some problems while experimenting with ADSP-21065 EZ-LAB kit. I have an old version, with RS-232 comms to PC and bundled Visual DSP 4 trial. I realize that it's rather outdated, but maybe somebody still remembers it.. I want to use a board standalone, so for experiment I'm trying to recompile one of provided examples as a boot image, specifically this is the Blink projec...


bf-518 power saving modes RTC

Started by Chagai Ensenberg in Analog Devices DSPs7 years ago 2 replies

Hi, I'm using the bf 518 evaluation board. my application needs to perform some kind of a test once an hour. in the rest of the time It...

Hi, I'm using the bf 518 evaluation board. my application needs to perform some kind of a test once an hour. in the rest of the time It should sleep / hybernate in order to save power. I want to program the processor so that once an hour the RTC signals the pocessor to wake up and do its task. Another requirement is that a GSM module (or other GPIOs) that receives a SMS can also wake th...


Alternatives to ADZS-HPUSB-ICE?

Started by "Wachob, Chip" in Analog Devices DSPs7 years ago 3 replies

Hello, I'm wondering if anyone out there has knowledge of a USB-based ICE for the 21469 family that is less costly than the ADZS-HPUSB-ICE....

Hello, I'm wondering if anyone out there has knowledge of a USB-based ICE for the 21469 family that is less costly than the ADZS-HPUSB-ICE. I'm not certain if the slower USB device would work in our situation or not, but even the cost of that unit is pretty steep with respect to our budget. Thank you, Chip Wachob Design Engineer Allen Audio / Allen Organ POB 36 150 Locust S...


Bf518 stand alone application

Started by Chagai Ensenberg in Analog Devices DSPs7 years ago 1 reply

Hi, i'm using the bf-518 ezkit. till now i worked and developed my application with the VDSP++ and it works fine. Now I would like to create a...

Hi, i'm using the bf-518 ezkit. till now i worked and developed my application with the VDSP++ and it works fine. Now I would like to create a stand alone application. How do I do it? If anyone has a reference/ example (or just direct me by telling where to look) , it would be very helpful. Chagai.


floating point ops in bf533

Started by maccordel in Analog Devices DSPs7 years ago 3 replies

Hi all, I have a problem, i will really really appreciate if you can give some comments or suggestions. I am implementing the AMR codec in...

Hi all, I have a problem, i will really really appreciate if you can give some comments or suggestions. I am implementing the AMR codec in BF533 in real-time. Since the codec processes speech frame of length 20ms, I am allocating time


Re: Stopping an interruption

Started by otri...@gmail.com in Analog Devices DSPs7 years ago

Hi Marcin interrupts will continue always unless you stop them, but they normally only take a short amount of time. Therefore there is...

Hi Marcin interrupts will continue always unless you stop them, but they normally only take a short amount of time. Therefore there is normally a lot of time in between interrupts for executing code. In between interrupts the program counter remembers where it was in your program in main. After each interrupt your program in main continues to execute. Instead of just while(1) you should w...


higher clock drawback?

Started by maccordel in Analog Devices DSPs7 years ago 1 reply

Hi guys, i am working with real-time implementation of a codec on BF533 eval board. part of my plan to have faster encoder processes before a...

Hi guys, i am working with real-time implementation of a codec on BF533 eval board. part of my plan to have faster encoder processes before a frame buffering completes, is to make my clock faster. currently, i am using CCLK=270MHz and SCLK=54MHz. I am planning to double the cclk rate. are there any drawbacks in doing this? are there any possibility of hardware destruction (like transistor ...


BF518 - FFT results and Codec Operation

Started by chagai_e in Analog Devices DSPs8 years ago

Hello All, i'm using the bf 518 with eval. board. recently i used the fft (i used the library function - rfft_fr16) on an audio input stream...

Hello All, i'm using the bf 518 with eval. board. recently i used the fft (i used the library function - rfft_fr16) on an audio input stream of different sizes. I then took the samples and the results of the fft and compared it to the results i get on matlab. I noticed a few odd things some related to the the Codec. and I'm wondering if anyone has an explanation.. The Codec: a) the s...


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