In my raspberry pi 3B+ project, I need to have two individually managed parts. I’m using SPI/WS2801 LEDs.
Is it better to setup a second string to be addressed differently somehow or to address parts of one string and then parts of another? I see the PI has a second SPI port setup on pins 38 & 40 so I was tending that direction, but I seek the experience of those who have gone before.
Thanks,
Josiah
They are on different device paths. I appreciate the heads up on split also. Thanks Tom.
On Thu, Oct 25, 2018, 8:50 AM Tom Swirly tom@swirly.com wrote:
This is pretty easy to do, I think!
I’m not entirely sure how two separate SPI ports are handled but my guess is that they’re on two different device paths?
If so, you can have a project like this:
drivers:
- typename: .SPI.WS2801
num: 64
dev: /dev/spidev0.0
- typename: .SPI.WS2801
num: 64
dev: /dev/spidev0.1
Or with the same meaning:
driver:
typename: .SPI.WS2801
num: 64
drivers:
- dev: /dev/spidev0.0
- dev: /dev/spidev0.1
If you do that, you’ll address the lights as one continuous string from the first to the second. There is also a container Animation to break them up so you can run one animation on one and one on another, called Split.
On Wed, Oct 24, 2018 at 11:22 PM Josiah Ritchie josiah.ritchie@gmail.com wrote:
In my raspberry pi 3B+ project, I need to have two individually managed parts. I’m using SPI/WS2801 LEDs.
Is it better to setup a second string to be addressed differently somehow or to address parts of one string and then parts of another? I see the PI has a second SPI port setup on pins 38 & 40 so I was tending that direction, but I seek the experience of those who have gone before.
Thanks,
Josiah
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