On 09/24/2015 03:24 PM, jp charras wrote: > Le 24/09/2015 14:38, Maciej Sumiński a écrit : >> Hi Jean-Pierre, >> >> On 09/24/2015 01:53 PM, jp charras wrote: >>> Orson, >>> >>> Could you have a look at these few issues: >>> >>> - When the number of layers is increased (for instance from 2 to >>> 4 layers), the tracks drawn on the new layers (for instance usung >>> the legacy mode) are not displayed in OpenGl mode , until the >>> board is saved, Kicad closed and reopened. >> >> I have tried to reproduce the problem, but I failed. This is what I >> did (revision 6212): >> >> 1a) start in OpenGL canvas or b) start in legacy canvas 2) create a >> new board (2 layers by default) 3) use Layers Setup dialog to >> increase the number of layers to 4 4) switch to legacy canvas 5) >> draw a few tracks on inner layers 6) switch to OpenGL canvas, new >> tracks are visible > > After investigations: > If you increase layers count on OpenGL canvas, there is no issue. > If you increase layers count on legacy canvas, add a trach or pcb text > on a new inner layer, and then switch to OpenGL, there is a visibility > issue (tested with demo "interf_u.kicad_pcb")
Thank you, the hints were helpful. It should be fixed in revision 6215. >>> - Microvias layers are incorrect: currently, it is created from >>> the top to the bottom layer. This is incorrect. It can be >>> discussed, but a microvia is usually created between 2 adjacent >>> layers, and in Pcbnew, it is restricted to an external layer to >>> the near inner layer. Change it needs adding code in DRC and to >>> manage uvia sizes and holes diameter depending on the number of >>> layers and their thickness. And this option makes sense for >>> microvias on pads, which are really restricted to the external >>> layer to the near inner layer. >> >> I have never used microvias before, so I should not argue about >> the constraints. I see the described issue now, it will be fixed. Should be good now. >>> - blind/buried vias cannot be inserted (always an error >>> message). When inserting a blind/buried via, the target layer >>> choice should be shown (and/or the dialog to choose the layer >>> pair should be accessible in GAL mode). My preference is just >>> show the target layer choice (see legacy mode). >> >> There are two ways to insert vias in legacy mode: - based on the >> currently selected layer pair (Layer Pair dialog) - picking the >> target layer on every insert (as you mentioned) >> >> At the moment GAL offers only the first method, but I agree the >> second one seems to be more convenient. I will add it, but I guess >> it has to wait until the stable release happens, so it can be >> merged. >> >> What is the error message? I might be missing some information >> here. > > Sorry, my bad. > > When I encountered this "issue", the currently selected layer pair was > Front+back, and the error message was "Only through vias can be placed > between front and bottom layers". > Therefore no bug. > > I don't know what is the best way in this case: > - Show this message. > - Place a through via. > - Place a blind/buried via which is on all layers (which is what > happens in legacy mode). I picked the third option, it seems to me the most sensible one. Regards, Orson >>> Remark: I like the way blind/buried vias are shown in GAL mode. >>> Perhaps a similar way could be used for microvias ( which are in >>> fact just blind/buried vias with a specific size) >> >> Good point, it should not be very hard to modify. >> >> Regards, Orson >> > >
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