`20180506a` - SPI timing on Raspberry

The objective of this experiment is to test what is the limiting factor on the Raspberry Pi communication.

With a clock set at 200khz or 16MHz, the transfer speed is the same. Does this lie with the overheads?

Clock issues

Original clock at 200khz

One sees 8 bits for 4us, that's around 500khz

CS is down during 10us

90us between 2 bytes

Boosting the clock to 15Mhz

Now 8 bits are less than 1 us, I'd say around 800ns

Same 90us delay between two bytes

Automated list of supporting files for the experiment `20180506a`

List of files

md

Readme.md

jupyter

tmp.ipynb

python

Modules

cletus
matty

Images of the Experiment

Others

Understanding lag in Raspberry Pi SPI (category: oscilloscope).

Understanding lag in Raspberry Pi SPI (category: oscilloscope).

Understanding lag in Raspberry Pi SPI (category: oscilloscope).

Understanding lag in Raspberry Pi SPI (category: oscilloscope).

Understanding lag in Raspberry Pi SPI (category: oscilloscope).

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