First Steps with Digital Signal Processing (DSP) Chips

RE: First Steps with Digital Signal Processing (DSP) Chips

Former Member — Thu, 12 Jan 2023 03:24:58 GMT

Can you use Sigma Studio to direct the dsp to stream the bits from the ADC over i2c?

RE: First Steps with Digital Signal Processing (DSP) Chips

shabaz — Wed, 21 Jul 2021 00:25:01 GMT

Another interesting board, called ADAU1466 DSP Core Board, contains a far more powerful DSP chip. At least six times the throughput, higher accuracy, and 40 times more data memory and approximately 8 times the space for programs. It is twice as expensive (approx $55 from Aliexpress) but still a reasonable cost to experiment with. Designing the code with SigmaStudio, and programming it, should be identical. This board needs external ADC/DAC though.

[View:/resized-image/__size/1108x620/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-76254d49-1de2-4939-9ed3-0fb20c7193a9/contentimage_5F00_208327.png:1108:620]

RE: First Steps with Digital Signal Processing (DSP) Chips

phoenixcomm — Sun, 18 Jul 2021 16:45:03 GMT

[mention:b0bc65b9ecdc4307bd967592f00e340a:e9ed411860ed4f2ba0265705b8793d05] Thank you for the write-up. Excellent as usual. a buddy of mine Pual and myself were wondering if we could simplify a flight simulator's math. It's a bunch of 3d rotational matrices, one for each axis.

~Cris

RE: First Steps with Digital Signal Processing (DSP) Chips

shabaz — Sun, 18 Jul 2021 15:26:30 GMT

I had an hour to experiment with it today, and tried to build a lock-in amplifier (synchronous demodulator) with it. Here's the first experiment with it, perhaps it could be useful for ground measurements in a cut-down way without the thoroughness of the ARMP project with [mention:a5312e9762dd4699ba5d3876da34ffe5:e9ed411860ed4f2ba0265705b8793d05] which needs a lot more free time. Anyway this is really just a quick hack, hardly scientific, I was just curious to see what would happen if I stuck it into the ground. I think the gound may be reasonably dry, and the wire ends were only stuck in about a centimetre deep;

[View:https://www.youtube.com/watch?v=Wt-28VjVIrs:1110:699]

I'm still learning what's possible, but as a fun exercise I'm wondering if a fancy metal detector could be designed with the DSP board.

RE: First Steps with Digital Signal Processing (DSP) Chips

genebren — Sat, 17 Jul 2021 20:35:24 GMT

Nice blog. DSPs are super powerful and handy devices. I had an early start in TI DSPs (TMS320 series) which had some great features at the time, like single instruction cycle Floating Point math. We used these devices to run power inverters and control systems for wind turbines and other renewable sources.

RE: First Steps with Digital Signal Processing (DSP) Chips

DAB — Sat, 17 Jul 2021 18:03:31 GMT

Nice simple introduction to DSP.

I have been involved with many projects where we took DSP to the limit of its capability and then some.

When you need one, they are indispensable, though they tend to be power hogs.

When you get into the real code where you need to start stacking processing pipelines and try to maintain clock synchronization you enter into a whole new world.

DAB

RE: First Steps with Digital Signal Processing (DSP) Chips

navadeepganeshu — Sat, 17 Jul 2021 17:33:42 GMT

Interesting walkaround!

The blockset based configuration is nice just like PSoC. In PSoC a bltsetram file is loaded to the chip with all configurations encoded. Here, its good to see only I2C interface and that itself configures DSP to bringup functionality as defined in GUI. So, is that I2C line carrying compiled data like a .bin file? What type of data does programmer put it in the EEPROM?

I am not sure, just curious if I2C lines can carry large program data unlike set of some register definitions.