Tuesday, 2018-11-20

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xobsmithro: I was planning to use the pll from the Raspberry Pi's 19.2 MHz clock. Which is another useful test.00:19
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mithrotannewt: Any thoughts on https://github.com/adafruit/usb_descriptor ?02:17
tpbTitle: GitHub - adafruit/usb_descriptor: Python library for generating USB Descriptor byte strings using `struct` only. (at github.com)02:17
tannewtI moved the example02:18
tpbTitle: circuitpython/gen_usb_descriptor.py at master · adafruit/circuitpython · GitHub (at github.com)02:18
mithrotannewt: Was looking for a quick way to generate the data for these USB packets...02:19
tannewtI'd suggest getting the tinyusb example going02:21
tannewtunless you are trying to do it from python02:21
mithrotannewt: I need something for in the python test bench02:21
tannewtah, then that should work02:21
mithrotannewt: Well, I'm currently construction the bytes by hand, so ya know it might be easier to use something like this :-P02:23
mithroCarlFK[m]: I noticed this yesterday -> https://photos.app.goo.gl/NcKCrtWAdSfc7TBE602:53
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CarlFKmithro: should I bring a little sheet mettle nibbler ?04:53
mithroCarlFK: maybe...04:54
* CarlFK[m] uploaded an image: VectorImage_2018-11-19_105459.jpg (3549KB) < https://matrix.org/_matrix/media/v1/download/matrix.org/qcfSKMkIIMJGbfZNmEvtBAAG >05:01
CarlFKmithro: do you think that tool will be ok cutting opsis case?05:01
CarlFKand if we break it, will you buy PS1 a new nibbler?05:02
CarlFKim off to burito house05:58
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xobsFun fact about the ICE40: The "SPI_SI" and "SPI_SO" pins swap assignments when you treat it as a slave.  Kind of obvious in retrospect, but it means I'll need to bitbang SPI on the Raspberry Pi, because now I need to send data out the "MOSI" pin (to talk to the SPI flash), as well as the "MISO" pin (to talk to the ICE40 when it's in slave mode).12:24
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cr1901_modernxobs: The SI pin is always the "Serial In" pin. And SO pin is always the "Serial Out" pin. Only way it makes sense for me :P.15:11
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