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Questions tagged [dac]

Questions utilizing the DAC tag are expected to relate to some aspect of Microsoft Data Tier Applications or DAC. Questions can include the DAC framework or DACfx, schema scripts from DACPAC, and combined data/schema scripts BACPAC. For questions about digital-analog converters, use [digital-analog-converter].

A DAC is a self-contained unit of deployment that enables data-tier developers and DBAs to package SQL Server objects, including database and instance objects, into a single entity called DAC package. Developers can build a DAC package using the Data-tier Application project system in Visual Studio, whereas SQL Server Management Studio (SSMS) users can extract a DAC and generate a DAC package file for an existing database.

A DAC package can be deployed to an instance of SQL Server to create a new DAC instance. The DAC deployment installs a new database on the instance, creates the database objects, and creates the logins associated with the users of the database. If a previous version of the DAC is already available, the DAC package can be used to upgrade the existing DAC instance to a newer version.

Questions utilizing the DAC tag are expected to relate to some aspect of Microsoft Data Tier Applications or DAC. Questions might also include related subjects such as the DAC framework or DACfx, as well as schema scripts known as DACPAC, and combined data/schema scripts BACPAC.

178 questions
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How to use step size to find the tone frequency in sine table? STM32

I'm trying to use the Sine Table lookup method to find the tone frequency at different step size, but when I'm converting the floating point to integer and use the oscicopte to view the frequncy, it can't display any things on screen. Does anyone…
user3435575
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AVR (Atmega 324A ) DAC interfacing via SPI

DataSheet:(Atmega 324A) http://www.atmel.com/images/Atmel-8272-8-bit-AVR-microcontroller-ATmega164A_PA-324A_PA-644A_PA-1284_P_datasheet.pdf DataSheet:(DAC) http://www.ti.com/lit/ds/symlink/dac101s101.pdf Hi there!! i'm learning Embedded programming…
Prakhyat Shetty
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Write a bash script that executes a command when a USB device is plugged in/removed

I'm trying to write a bash script so that Linux resets pulseaudio whenever I plug in or remove my USB DAC. So far it looks like this. #/bin/bash while : do sleep 5 if lsusb | grep YOURID then continue fi WHAT YOU…
Peter Bucher
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noise in dac output in fft filter

I designed a fft filter (taking forward and inverse FFT) in Keil uvision using STM32F429 Discovery Board. However on taking the output from DAC to oscilloscope, between two consecutive DAC outputs a lot of noise occurs. Any help in the coding or…
user11622
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Get the data type of a FunctionCall such as scope_identity()

If I have an instance of Microsoft.SqlServer.TransactSql.ScriptDom.FunctionCall, how do I get the data type of the value that will be returned by the function?
adam0101
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How to get SelectStatement from Procedure?

This is a follow up question from here. I'm trying to use DACExtensions to retrieve the SelectStatement objects from a Procedure so that I can generate wrapper functions from my SSDT project using a T4 template. The problem is that the Nodes…
adam0101
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Delphi and mysql - Unable to connent to server..maybe custom connection reqd

I am coding an application for my company wherein i want to parse the results of a mysql query and display them in my application but i am facing a problem conecting to the database. the ip address of the server is : 172.30.192.20 and before i can…
Steve
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My DAC files extracted from SSMS have a file type in Spanish

I do a lot of schema compares in my work. I've started extracting DAC files from the databases using Tasks --> Extract Data-tier Applications in SSMS, then doing the schema-compare in Visual Studio. That part works great! Much better that saving and…
Michael McCormick
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Trying to implement spi bus in vhdl

I've been trying to comunicate with the LTC2426 DAC via SPI and I've failed missrebly. Now I'm seeking for help. Could someone tell me why my code doesn't work. The CSDAC Works properly the SCLK is generated and the 32 bits are sent but still I may…
gv260ea
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Cannot deploy VS 2010 database solution to database if the deployed database was manually deleted

I am working on creating a visual studio database solution so that i could deploy databases in a more managed manner. Following are the steps that i performed after adding some sample tables and SPs in the solution. Deploy the database to my local…
Vaibhav Pingle
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Generating a sawtooth using AK4495

I am currently doing an internship. Where I was given a side project in which I am required to create a sawtooth wave using a DAC Tester board that utilizes the AK4495. Initially, I need to establish communication between the DAC and microcontroller…
Mohammad Hussain
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DAC BLC objects

How I can access objects of DAC and BLC? class BaseDACExtension : PXCacheExtension { public void SomeMethod() { BaseDAC dac = Base; } }
user1773603
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What does this code mean？

while(1) { for(x=0;x<5;) //note: x is incremented elsewhere { DAC->DHR12R1 = (uint16_t)(x/5.0*4095*3.0/3.3); } } what does this loop mean？I know the DHR12R1 is data hold register 12bits right
Qiushi Nian
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