High Throughput SPI traffic part 0 - Buffers and Parallel Data Lines

RE: High Throughput SPI traffic part 0 - Buffers and Parallel Data Lines

Jan Cumps — Fri, 27 May 2016 09:56:58 GMT

The fifth part is up, with DMA added to the mix

[View:/resized-image/__size/291x516/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-bc50a247-4c8b-4303-9d34-cff6f6a1debe/contentimage_5F00_189141.png:291:516]

High Throughput SPI traffic part 3a - SPI with DMA

RE: High Throughput SPI traffic part 0 - Buffers and Parallel Data Lines

Jan Cumps — Fri, 20 May 2016 20:22:55 GMT

I just learned, by clicking on the link in [mention:6e474abc33b64a82aa78c9813503c962:e9ed411860ed4f2ba0265705b8793d05]' comment,

that SPI with 4 data lines is called Quad-SPI: SPI Storm – Advanced information – Byte Paradigm – Speed up embedded system verification

RE: High Throughput SPI traffic part 0 - Buffers and Parallel Data Lines

Jan Cumps — Tue, 17 May 2016 18:53:20 GMT

Part 3 is still unbuffered SPI. But I've got all things set up to be buffer ready.

I now also know that the LCD is compatible with buffered SPI. I can blast a whole line of pixels in one time.

Speed gain: From more tha 2ms per line to less that 400 µs.

High Throughput SPI traffic part 1b - SPI without Buffers

RE: High Throughput SPI traffic part 0 - Buffers and Parallel Data Lines

balearicdynamics — Tue, 17 May 2016 05:35:50 GMT

A great starting depicting a fascinating scenario. I like it !

Enrico

RE: High Throughput SPI traffic part 0 - Buffers and Parallel Data Lines

Jan Cumps — Mon, 16 May 2016 20:50:13 GMT

The second part goes so deep into software, memory cache schemes, moving variables into fixed memory space location and byte copying,

that I don't know if I'd like to read that kind of story myself. It doesn't feel like compelling story at all.

Anyways, here it is: High Throughput SPI traffic part 1a - Buffers and DMA

RE: High Throughput SPI traffic part 0 - Buffers and Parallel Data Lines

DAB — Fri, 13 May 2016 18:53:08 GMT

Very interesting project.

There a many ways to adapt the basic SPI interface to expand the number of devices you can connect and how to route data between them.

You can get the most out of your bandwidth if you setup dedicated SPI lines between devices, with one dedicated to send and the other to receive.

That way you can maximize input or output depending upon your application.

DAB

RE: High Throughput SPI traffic part 0 - Buffers and Parallel Data Lines

balearicdynamics — Fri, 13 May 2016 15:50:52 GMT

Very useful and interesting article! I am just exploring the best way to connect a PSoC 4 with MSP432 via ISP or I2C (one of the two alternatives) and this represent a good starting point.

Enrico