EngineerZone Forum
Q&A from Analog Devices EngineerZone: SigmaDSP/SigmaStudio and DSP discussions (971 topics).
971 topics · 3273 messages
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inline functions funpack(), fpack() considered to large for inlining
Hi, I'm using VisualDSP++ 5.0.8 for SHARC 21469. When I switch on compiler remarks with -Wremarks compiler switch, I see remark cc1461 "Compiler Remark: function call inlined despite compiler consider
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fract16 conversion
Hello, I am dealing with data in "int", "short" and "double" and I want to filter it by IIR, so. How can I convert from fract16 to double, short and int and vice versa? I have found a relation to conv
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IIR filter in DSP RUN-TIME LIBRARY
Hello All, I am preparing a report about iirdf1_fr16 (IIR filter form 1), and I have some questions. Is the filter.h header file is enough to the library, or it needs a linking file? The a_coeffs and
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Transport Sport Data to IP using LwIP
Hi, I am trying to transport Sport Serial stream over IP using VDK + LwIP. I have a few questions and issues i want to discuss but not on an open discussion. Is there a way to have a closed box discus
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BF527 - USB device is not running after load file in flash memory
Hi I'm using the Ez-kit BF527, chip revision 0.0 and I'm developing a project in which the USB interface has been used. The project is running without any errors under Debug and Release modes. But, wh
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AD7746 Coupling between two capacitance channels
Hey there, I am now using AD7746 for Capacitance sensing. I can now detect capacitance from each individual capacitance channel successfully, however, If I try to read capacitance from one channels af
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UART DMA receive interrupt not trigger
Can anybody here share your thoughts on how to set up the UART receiver, in DMA mode, to trigger an interrupt when the receiver DMA is full? I've attemped the code enclosed in the attachment but I hav
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voltage level for logic inputs in AD9230
Hi, in the datasheet of the AD9230 (page 5) I saw that the voltage level for logic 1 voltage is 0.8xVDD min I want to know what is the maximum voltage level. the same a logic 0 voltage is 0.2xVDD max,
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Problem using UART to transmit messages to an LCD
hello, using the 'initUART.asm' and 'xmitmsg.asm' - files from the uart echo back - project on my adsp21369 ez-kit lite simply to put out a message to a serial lc-display. the transmission of the welc
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DSP selection
I am designing a monitoring system in which the sound of an industrial motor should be analyzed to tell the condition of the motor. For this application I need to use FFT. So I chose DSP as the capabl
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BF504 - I2C - ANAK(Address Not Acknowledged) problem
Hi, I have BF504 and I need to communicate over I2C. So I wrote functions below, but I always get status ANAK in TWI_MASTER_STAT register and communication never begin. Is there anyone who would know
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DSP kit for AUV (localization of a pinger)
Hello all. My team is making a AUV (Autonomous underwater robot). I'm trying to use 3 hydrophones to locate a pinger. The pinger is a sinusoid at 40 khz. I need a DSP kit suitable for this problem. It
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TS101 Strap Mode problem
Hi buddies, I am using TS101 in my design and now a little confused about the following two questions, could somebody give me some advice? 1, I connect CONTROLIMP0~2 with 111, I'd like to know what wi
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Starter or Learning Kit to recommend
Hi Everyone I am starting to learn to create a simple device that can record an output from my accelerometer. So right now i wish i can have a starter that can let me to learn how use a ADC connected
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AD9125 DAC Wake-up time after power down
Hi, In our application the power consumption has to be low, so I want to use the power down feature of this DAC, when our transmitter is OFF. But I couldn't find the recovery time in the datasheet (Th
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'throughput rate' parameter
Hello, I would like to ask a question concerning AD converters: what does 'throughput rate' parameter exactly mean and how is it related to maximum sampling frequency? I'm interested mainly in AD7767
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ADSP-2183BST-133 "X" ?
I have a BOM calling out part # ADSP-2183BST-133X. I can't find anything on the data sheet about the "X" ending. Is that just packaging (tape & reel)?
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BF548 Emulate load IDLE
Hi, This thread would be better placed in the Blackfin category, and has been moved here: https://ez.analog.com/message/16068#16068 Thanks, David.
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PPI DMA
Hi , I have a question , Could we used PPI -> DMA -SDRAM in such a way that we get a part of image . If image caputure is done for 725 X 480 and we need a part of center image of 200 X 200 , can get o
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Please Help Me!
Hi I am doing a project on speech recognition and to implement it using the BF537 EZ-Lite Kit. I have familiarized with the theory of speech recognition but I'm new to embedded programming so I dont k
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How to communicate with AD776x family w/o FPGA?? (32-bit SPI)
Good afternoon! I want to communicate with AD7764, which have 32-bit SPI, ADC - master, baudrate ~10Mbit/s. But FPGA use is undesirable for me. I wanna use MSP430 or Picolo (F28x) or any other similar
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Executable file format and section definition
Hello everyone, Here I have two questions. 1, I read the user manual, it says the executable file is COFF, but I saw somewhere else ,the executable file is .dxe, which is said to be a ELF file.also th
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tMDCIH timing for Bf527
Hi , Please let me know with regards timing for MDC in Ethernet . BF527 MDC Rising Edge to MDIO Input Invalid (Hold) Min =10ns , page 69 - 70 http://www.analog.com/static/imported-files/data_sheets/AD
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There are some bugs in the adi_int_NestingISR of uCOS
Hi, I want to use SSL(System Services Library) in the uCOS, but when porting the interrupt processing, I found there are some bugs in the adi_int_NestingISR. In the flowing code, R0 has the IVG number
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Exclude Function out of Program Memory
Dear all, I'm currently working on ADSP2181. I got some issues that need to be shared to you: 1) Exclude functions out of Programming Memory (PM) when system boot, for example: int main () { ...... ..