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44 Commits

Author SHA1 Message Date
Sean Cross ee8313e78d gitignore: ignore backup files 
Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-31 16:06:14 +08:00
Sean Cross 65ba72a57e hardware: pcb: add initial screenshot 
It's unrouted, and will probably change, but it's an idea.

Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-31 16:05:54 +08:00
Sean Cross e32b48a72e hardware: pcb: initial commit 
This is an initial commit.  Still unclear of how big it will be, but
this is a good "minimum size" estimate.

Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-31 16:03:55 +08:00
Sean Cross 1acf50df39 hardware: sch: use footprints from `tomu-fpga` 
Use our local copy of footprints, which are guaranteed not to change
between Kicad versions.

Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-31 16:03:06 +08:00
Sean Cross f3315b58d8 pcb: add our own copies of 3d models and footprints 
The Kicad default footprints seem volatile and unreliable.  Going
between two machines that both have "Kicad 5.0.0" installed results in
incompatibilities because KiCad has renamed their footprint libraries.

Also, for some reason it's going to Github to get footprints instead of
using local copies.

Copy every model and footprint we use into a local tomu-fpga.pretty.
This lets us ensure we can work offline, and also allows us to modify
footprints, e.g. by adding a "Pin 1" marker.

Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-31 16:01:10 +08:00
Sean Cross 3a14554c30 reference: add pushbutton, red LED 
Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-31 12:58:45 +08:00
Sean Cross 820408887a hardware: pcb: add footprint library table 
This will be used to tell pcbnew where to find footprint libraries.

Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-31 12:58:07 +08:00
Sean Cross 061b2c81a7 hardware: sch: map remaining footprints 
Add footprints for the remaining schematic components.

Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-31 12:57:33 +08:00
Sean Cross 60d24d66fd hardware: add footprints for most components 
Add footprints for most of the components we'll use.

Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-31 12:57:17 +08:00
Sean Cross a715f5c728 hardware: add testpoints for SPI programming 
This will become necessary when doing factory burning.

Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-31 10:54:13 +08:00
Sean Cross 30b7610996 pcb: hook up more debug wires 
We have spare pins, so run more debug wires.

Many of these will probably get cut when doing the PCB layout.

Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-31 10:45:27 +08:00
Sean Cross 7bbaa24233 hardware: update name of SPI Flash 
Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-31 10:36:52 +08:00
Sean Cross 4fe5f8f629 hardware: sch: use raspberry pi header, rework signaling 
Rework the signaling to send everything to a Raspberry Pi header.

Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-31 10:36:01 +08:00
Sean Cross eb93c70f01 hardware: sch: restructure SPI Flash symbol 
It's much cleaner if we put power pins on one side and signal pins on
the other.  This removes the ratsnest that was building up.

Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-31 10:35:19 +08:00
Sean Cross d99d091d95 pcb: schematic-cache: add Raspberry Pi, new SPI Flash 
This reworks the SPI Flash layout and adds the Raspberry Pi header.

Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-31 10:34:33 +08:00
Sean Cross 6283435874 reference: evt1: publish final-final-final schematic 
It's final this time!  I mean it!

Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-31 10:33:49 +08:00
Sean Cross b7bcfc595b reference: update evt1 schematic pdf 
This adds the `SPI Header`.

Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-30 23:47:17 +08:00
Sean Cross 0973972464 hardware: pcb: add SPI debug header 
This will be used to program SPI during board bringup.

Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-30 22:28:08 +08:00
Sean Cross 9cb4ba9a3d reference: regenerate evt1 pdf 
Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-30 19:21:59 +08:00
Sean Cross 78bb283bc6 hardware: sch: populate SPI, /RESET pullups 
It turns out these resistors are important.

Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-30 19:21:01 +08:00
Sean Cross ddb9948232 reference: add another fpga doc, xtal doc 
Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-30 19:16:30 +08:00
Sean Cross 0c017aeb96 reference: update evt1 schematic 
This schematic reflects more options, including two crystals now and
more decoupling capacitors.

It also adds an option to power VCCPLL from a second 1.2V regulator.

Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-30 19:15:28 +08:00
Sean Cross f06ef4a7d5 hardware: sch: add crystal, VCCPLL regulator 
Add a crystal, so we can test to make sure it works.

Also add a second regulator dedicated to VCCPLL in an effort to
cost-down the capacitor and large components that shouldn't be
necessary.

Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-30 19:14:33 +08:00
Sean Cross 76f7bf2548 pcb: sch: make ICE40 VCCPLL a power input 
For some reason, this pin was listed as a `power output`, which does not
appear to be the case.  Due to this error, the DRC would fail when using
a regulator directly connected to the pin.

Mark this pin as a `power input` to fix this, since it's really where
power goes into the chip.

Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-30 19:13:32 +08:00
Sean Cross ab18c90450 hardware: sch: specify spinor part 
SPINOR parts are largely interchangeable.  Pick one.

Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-30 17:09:11 +08:00
Sean Cross fd421b88ba reference: re-re-export plot file 
The numbering may have changed things.  Maybe.

Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-30 17:07:19 +08:00
Sean Cross c7bfc248af pcb: sch: renumber schematic 
Renumber the schematic again, as things have shifted around a bit.

Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-30 17:06:04 +08:00
Sean Cross ab33b4a0a1 hardware: rename `tomu-fpga` to `pcb` 
This more closely reflects what it actually is.

Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-30 17:05:02 +08:00
Sean Cross 6136a66e8e reference: evt1: minor reworking of label positions 
Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-30 17:03:15 +08:00
Sean Cross b940b19cc6 reference: add datasheet for mems oscillator 
Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-30 17:02:41 +08:00
Sean Cross 3e009d6f8b hardware: pcb: add manufacturer and part numbers 
Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-30 16:57:17 +08:00
Sean Cross 72df05fe68 README: convert from asciidoc to markdown 
The link mechanism for asciidoc is weird, and isn't working right now.

Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-30 16:40:21 +08:00
Sean Cross d256c39c83 LICENSE: add BSD 3-clause license 
It doesn't really make sense for PCBs, which will end up licensed under
a different scheme, but it will work for the source code that will end
up here.

Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-30 16:08:52 +08:00
Sean Cross 270d90a21d README: add file 
Add a simple README file describing the project.

Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-30 16:08:23 +08:00
Sean Cross bd65526f52 hardware: rename directory from `pcb` 
Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-30 16:08:06 +08:00
Sean Cross 8a38ba4791 gitignore: ignore bak, bck, sym-lib-table 
Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-30 16:06:28 +08:00
Sean Cross a61337a472 pcb: sch: add tomu-fpga-cache.lib 
This file appears to be a local version of the schematic symbols used in
the .sch file, so add it.

Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-30 16:05:08 +08:00
Sean Cross 8476a9b7f8 pcb: add tomu-fpga project file 
This has changed slightly, so add the updated version.

Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-30 16:04:36 +08:00
Sean Cross 177fe7196f reference: evt1: add schematic 
Add a schematic for EVT1, based on the most recent design.

Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-30 16:03:48 +08:00
Sean Cross 7c83be8dd9 pcb: sch: finish evt1 schematic 
This should be a feature-complete schematic.  Now to start on PCB
layout.

Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-30 16:02:55 +08:00
Sean Cross 2cd2b204c2 reference: add more ICE40 documentation 
Add more reference docs for ICE40 parts.

Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-30 16:02:06 +08:00
Sean Cross b5152b0628 pcb: sch: initial beta draft 
This is the first feature-complete version of the schematic.

Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-30 13:25:22 +08:00
Sean Cross 0213e5d7f7 reference: initial commit 
Add an initial commit of reference documentation.

Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-30 12:36:55 +08:00
Sean Cross 7f378b02c0 initial commit 
Add work-in-progress files for Tomu ICE40 FPGA.

Signed-off-by: Sean Cross <sean@xobs.io>
 2018-10-30 12:36:17 +08:00