Atmega 8 or 328 can handle AD9280?

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avrcandies wrote:
didn't I suggests this was better-suited for an FPGA way back in #6???

You certainly did!

 

 

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(oops - duplicate)

Top Tips:

  1. How to properly post source code - see: https://www.avrfreaks.net/comment... - also how to properly include images/pictures
  2. "Garbage" characters on a serial terminal are (almost?) invariably due to wrong baud rate - see: https://learn.sparkfun.com/tutorials/serial-communication
  3. Wrong baud rate is usually due to not running at the speed you thought; check by blinking a LED to see if you get the speed you expected
  4. Difference between a crystal, and a crystal oscillatorhttps://www.avrfreaks.net/comment...
  5. When your question is resolved, mark the solution: https://www.avrfreaks.net/comment...
  6. Beginner's "Getting Started" tips: https://www.avrfreaks.net/comment...
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For goodness sake's, don't try to make an oscilloscope.  This type of device is best purchased, given the time and complexity involved.

First buy a "logic analyser" for about $8 US and download the Saleae software for it.  Since most electronic signals are digital now, this device is more useful than a true oscilloscope.  The software will do protocol analysing for UART, I2C, SPI, and other common digital interfaces. It uses the PC with its gigabytes of RAM and gigaHertz speed.
https://www.ebay.com/itm/24MHz-8...

A cheap but limited oscilloscope is available using the PC's audio input.  There are downloadable programs for these.  The audio input is AC coupled, and has a maximum input of about 1.0 to 1.5 volt peak-to-peak.  It is dual channel (left and right) and does 16-bit samples at 44100 samples-per-second.  Which isn't good for much except audio signals.

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For goodness sake's, don't try to make an oscilloscope.

 

Define the goal, first.

 

If the goal is to have a useful O'scope for one's bench, then buy one.

 

If the goal is to have an interesting project, and learn a lot, then build one.

Learn about microcontroller projects, memory and speed limitations.

Learn about GLCD displays, and/or USB to PC comm's, for displaying the data.

Learn about analog front ends for analog signal processing, (power supplies, filters, gain, voltage clamps, etc.).

Learn about sampling theory.

Evaluate the performance of what you can (easily) accomplish with a simple setup, and then look at the spec's of commercial O'scopes, and then begin to better understand the difference between a "toy" scope and a decent one.

 

I bet many of the regulars  on the Forum have build their own micro / O'scope project at one time or another.

 

JC

 

  

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gchapman wrote:

PIC32MZ EF has 50MHz 16b async SRAM EBI; IIRC, some PIC32 also have a sync interface (context is TFT LCD, a pixel clock from PIC32)

It looks like this suggestion went unnoticed. See these two videos of how a camera interface was implemented:

https://youtu.be/rQYByorpoFk

https://youtu.be/gp0FxbEmRSw

 

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