Blackfin and AD7476

Similar Questions

• Blackfin multiple SPI devices

  Hi guys:

  Sorry to post this question, but I really can't get it to work!

  I can configure each SPI device and they work only, when I try to config 2 devices, I can't just two lines of CS to go up!

  Note: Here is my code, I choose slave select 4 so it is easily accessible via SPI connector to the Board of Directors (PIN 14)... SS1 is pin 9!

  Thanks in advance

  I like your "main.vi" instrument, but unfortunately, I think the AD7476A driver was not designed with several converters a/d in mind, let's dig a little deeper.

  "Declaring Slave Select" command limits the value 1-7, because the SPI device can drive directly only this amount of devices, each of them being validated in accordance with the SPI_FLAG registry. Notice that in the DMA transfer mode (case of pilot AD7476A) CPHA = 0 and SS pins are automatically selected at the beginning of each transfer: for each bit set to one in SPI_FLAG a low pulse will be generated to the corresponding pin! (These bits are set on a per activate slave select or declare slave).

  He had been great if playback turn slaves, but isn't.

  I'm in the island you will not wait 1 MSP for all a/d converters. The AD7476A conversion time is determined by the clock series: the pilot sets the SPI clock on the sampling frequency of 16 times. This is why must be given a higher value in the sample spent at BF AD7476A Control.vi clock:
  For a system with converters a/5 n and 100 KSPS value must be 500000. Inter-channel delay is in this case 2 microseconds, so the difference in time between the first sample of the first string and 5th Channel is 8 us (almost equal to the sampling period), this could be a problem in some applications.

  However, more information is available in the description of the material (ADSP-BF537 Blackfin processor Hardware Reference ), documentation of device driver (C:\Program Analog Devices Devices\VisualDSP 5.0\Blackfin\docs), and drivers of source code (C:\Program Analog Devices Devices\VisualDSP 5.0\Blackfin\lib\src\drivers). Here, I would just say it seems circular buffer are not taken (see VisualDSP 5.0\Blackfin\docs \spi\adi_spi_int.pdf and adi_spi_dma.pdf) and move to solutions:

  1 reconfigure the SPI to use interrupts and use reminders to go through program slaves using BF SPI Control.vi "Select/deselect"slave"(of course, each of the ointments pins must"Declare Slave Select"with BF AD7476A Control.vi or"Activate Slave Select"using BF SPI Control.vi). This will add overhead and, depending on the sampling frequency, you may lose a few samples. Also, there is a limit of only 7 slaves.

  2. turn on DMA for a single word and switch slaves in the callback after each conversion result (of course, this will have the same disadvantages as #1).

  3. Add a simple external hardware to automatically select the a/d converters (for example a counter + decoder clocked by one of the seven pins SS and reset using EIO). Then play with stamps to identify channels (example buffers 1 d with 5 items for converters a/5 n). This will add less overhead, reminders will trigger once a sample of all channels was acquired (or even better after n samples, if the length of the buffer is nx5, etc..)

  All of these solutions, to open and close AD7476a driver only once in the 'main.vi.

  #1 and #2 similar to your posted solution above but the command must be select/deselect for interruptions and toggle for DMA. The slaves should be put in exactly at the end/beginning of each word received.

• What is the origin Kernelpanic on Blackfin?

  I get the following after trying to run on a target of Blackfin 537 debug code:

  Processor Status = stopped

  Location: _KernelPanic + 0x0

  No idea how to troubleshoot or fix this error?

  PEI

  Solution: KernelPanic occurs only when the program is started while the from the data to the serial port.

  If the sensor is idle until the start of the program-> runs without a hitch.  Program fixed sensor in Active mode to the Tx data.

  If the sensor is active and Tx'ing data to the serial port of the target at the start-> KernelPanic!

• the ad7476A buffer size and device

  Hi, I use the BF Analog read ad7476a (modified) vi.

  But I can't get the size I want filled a tampon...

  Somehow I think the buffer is limited to an array of 128 items, but I've set with 256, when I show the initialized array, it says I have 128 elements... together using array size it shows 256...

  If this is a limitation of blackfin, please tell me the best way to build an array with progressive buffer readings...

  PS - I need a sample of 10 kHz and a good number of samples filled in a table, or calculations in real time, but I don't know how to do, please help me!

  Thanks in advance

  Hello:

  I discovered the problem... the 128 size is a parameter that can be changed when 'Configuration target - Debug Options' (ADSP-BF537 in my case)!

  Thank you

• I have an ipod touch 128 GB... but I'm almost to reach its maximum.  I want to do is buy a new ipod touch 128 GB and add new music without synchronizing the entire library to it... I have 2 ipods in conjunction with other copies

  I have an ipod touch 128 GB... but I'm almost to reach its maximum.

  I want to do is buy a new ipod touch 128 GB and add new music without synchronizing the entire library to it... I have 2 ipods in conjunction with the other copies of the other.

  is this possible?

  What should I do?

  Matt

  When you get the new iPod, you can use iTunes on your computer to select and synchronize the music you want on it, in the same way that you synchronize your current iPod - your iTunes will recognize them as different devices and will remember your choice of synchronization for each, it will not (unless, for example, you restore the backup of your current on her iPod) put the same content on both.

  (I asked for your post be moved to the iPod Touch forum, where you have posted is the iPad forum use.)

• Why my notes sync between my Mac and iPhone?

  I have my MacBook Pro with Mac OS X 10.9.5 Mavericks and my iPhone is running iOS 10.0.1 and used to synchronize my notes! Is it because of the huge gap in operating systems? I SHOULD update my Mac to Mac OS 10.10 + for this problem? Thank you!

  In order to synchronize Notes between your Mac and iPhone, you must configure iCloud > http://www.apple.com/icloud/setup/

  But this requires macOS Sierra 10.12, the latest available version and the last iOS available for your iPhone.

• Photos, iCloud and OneDrive sync

  Hi all

  I have a question on how to better organize my photo library.

  For the moment, on my space OneDrive (mapped to a partition on my MacBook SSD), I have a folder called 'Images' containing just about all of my photos and organized by folders.

  Since my tech ecosystem is roughly marked Apple (iPhone, iPad and MacBook), I would use the power and versatility of the Photos and iCloud, so that everything remains in all of my devices and free space memory iPhone sync.

  Here's the question: I want to keep my pictures saved on OneDrive, then put the Photos on my Mac to view photos from this folder and use iCloud to share through my devices.

  -I see the same folder structure on iPhone and iPad a synchronization is complete?

  -More important, if I take a picture with my iPad, it will be placed not only on iCloud but also automatically added pictures on Mac which, in turn, puts it in the folder of photos on my OneDrive?

  -Finally, take pictures of my iDevices will store them in the film. If I move them into folders, photos will be mapped (copied to iCloud) on my other devices constantly (in the folder)?

  I would like to notice I'm not trying to avoid using iCloud premium space - I already have a subscription plan of 50 GB that I don't mind mounted. I just keep having just all my photos on OneDrive.

  Thank you in advance for any comments you may have!

  Paul

  The answer is simply not

  The photo library can not be stored on a basic system to pictures not work will have a referenced library, so you may not have a local library references photos on a disc - the photo library can be on a local drive connected directly to the Mac OS Extended format

  You can synchronize between the Mac and IOS devices using iCloud library that synchronizes the photos and the structure of the album/folder between devices

  When you import pictures you can export them to your OneDrive record and have a copy (not associate Photos somehow) on a disk

  You can not have the same physical pictures in Photos and on one disc - each must have its own copy of the Photo

  http://www.Apple.com/icloud/photos/

  LN

• Video and photos of backup

  Hello

  Anyone know the best way to back up photos and videos I took Iphone 6 my mom.

  I just got a new Iphone 6 more and have an icloud account, she has one more.  I don't know how to proceed.

  Thank you

  This article can help you:

  The backup of your iPhone, iPad and iPod touch - Apple Support

  You get free 5 GB of storage iCloud. If you want to save more than 5 GB, you buy more storage iCloud.

• I have a lg 4 k tv (40 "40UH630V TV LG ULTRA HD 4 K) with HDMI 2. 0 and if I buy apple tv 4 can be used with HDMI 2. 0 port or do I HDMI 3 port to use this? Please help me

  I have a lg 4 k tv (40 "40UH630V TV LG ULTRA HD 4 K) with HDMI 2. 0 and if I buy apple tv 4 can be used with HDMI 2. 0 port or do I HDMI 3 port to use this? Please help me

  You can use it with your TV.

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  You should contact the account of Apple security team. To join, click here and choose a method; If this page does not list one for your country or if you are unable to call, complete and submit this form.

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• Updated for Sierra and cannot import images

  I upgraded to Sierra and my camera, a Canon EOS 20 d is is properly recognized.

  Prior to the upgrade:

  When I plugged the camera would open automatically. I close and open Photoshop. PS I would like to select Import-> device and my camera would be identified. When I select the camer displayed thumbnails of photo.

  After the upgrade:

  When I connect the camera pictures only opens automaticall. If I open the pictures is not a camera attached.

  PS when I select Import-> my camera device is represented, but the icon is an external drive. When I select the icon nothing is displayed.

  Hello ChuckSto,

  Thank you for using communities Support from Apple. I know have a problem with your Mac and your camera is not what you expect. The good news is that the next steps will be useful for your problem of your camera is not recognized:

  If nothing happens when you connect your digital camera

  Try the following:

  • Make sure that the USB cable is properly connected to your camera and computer. If your computer has a USB port, try connecting the cable inside.

  • Check your camera to make sure he turned on and set to mode suitable for importing the photos. See the instructions that came with your camera.

  • Check the memory card of your camera for damage. See the documentation that came with your camera for more information on this page or other potential problems.

  Photos for Mac: import pictures from a camera or a mobile device

  See you soon!

• Speeches and a .key file cannot be opened

  I'm unable to open or work on Keynote documents. I get an error popup image that says: cannot open 'FILE.key' because it is not a valid document to Keynote. I'm assuming that the same problem will occur in numbers and pages so I have not used either of these programs in a very long time so I do not have a file to test on.

  I know that the file is indeed a valid Keynote document. I recently had to reinstall my package iWork 09 since the original software discs - I have them have not purchased through the App store or my iCloud account. I have a software key. I can't move my OS to Sierra right now because I have other software that I use for work and tech support as we said we cannot go immediately. My current OS is El Capitan 10.11.6, and I have a MacBook Pro 15 "retina.

  Any advice on obtaining Keynote works again until I can make the upgrade to Sierra?

  Thanks in advance.

  Sounds like you are trying use Keynote 09 to open a file created by Keynote 6.

  Keynote 09 cannot open files of version 6 because they are a different file format.

  If this is the case, buy and install Keynote 6 from the Mac App Store.

• Universal SE Clipboard and iPhone

  Universal Clipboard will work between a MBP of the retina and an iPhone SE?

  Hello curly1,.

  Thank you for using communities of Apple Support. It is my understanding that you want to use the universal Clipboard between your MacBook Pro and the iPhone OS. This is a great feature. I'm happy to help you.
  

  Universal Clipboard

  Universal Clipboard works with these devices and operating systems:

  iOS 10	macOS Sierra
  iPhone 5 or newer iPad Pro iPad (4th generation) iPad Air or newer Mini iPad 2 or newer iPod touch (6th generation) or newer	MacBook (early 2015 or newer) MacBook Pro (2012 or newer) MacBook Air (2012 or newer) Mac mini (2012 or newer) iMac (2012 or newer) Mac Pro (end 2013)

  Requirements for continuity on Mac, iPhone, iPad, iPod touch and Apple Watch

  Have an amazing day!

• USB disabled after the update of the Sierra (a short circuit and a work)

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  If there is someone with the same problems, please tell me what to do! I don't want to put in the trash my mac just for a flash drive... but I need!

  Hi Supermene,

  Thank you for using communities of Apple Support. Based on what you said, it appears as a USB device is not recognized in one of the USB ports. There are a few things that can cause this. I recommend you read these articles, which may be able to help solve the problem.
  

  macOS Sierra: If a USB device does not work

  Reset the management system (SCM) controller on your Mac.

  See you soon.

• Freezes and restarts on 2015 5K running El Capitan iMac and am ready to freak me out

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  He went on and off for a few months. I have cleared my startup disk and played fresh OS installs (didn't even use Migration Assistant just to be safe), three times. I installed apps one at a time try to refine what is the cause but could not.

  At first I thought it was my mouse Logitech G502 because when I went to an old mouse for a few weeks the problem has disappeared. But yesterday, listening to iTunes via Airplay and working in InDesign, the system froze again.

  I wonder if she might be SoftRAID(4) and/or my two RAIDs of 4 external ThunderBay?

  Thanks in advance!

  Steve

  We can take a stab, please publish a report full of EtreCheck, and if we do not see everything that you can post your last report KP.