Re: [Lazarus] How to list available serial ports on Linux?
That is how do it:
Function GetSerialPortNames(): String;
Var
sl: TStringlist;
Var
Info: TSearchRec;
hdl: THandle;
b: Boolean;
Begin
sl := TStringlist.create;
If FindFirst('/dev/tty*', faSysFile, Info) = 0 Then Begin
Repeat
b := true;
Try
hdl := FileOpen('/dev/' + info.Name, fmOpenReadWrite);
If hdl = -1 Then Begin
b := false;
End;
Except
b := false;
End;
If hdl >= 0 Then Begin
FileClose(hdl);
End;
If b Then Begin
sl.Add('/dev/' + info.Name);
End;
Until FindNext(info) <> 0;
End;
FindClose(Info);
result := sl.CommaText;
sl.free;
End;
On 10/6/20 11:35 PM, Bo Berglund via lazarus wrote:
> Is there a way to list the available (working) serial ports on a Linux
> platform like the RaspberryPi?
>
> I would like to offer a dropdown list of working serial ports to the
> user to select among, but I am dissuaded from it when I do the
> following:
>
> ls -la /dev/tty*
> It returns a very long list of serial devices and most of these are
> probably not even existing in real life.
>
> On an RPi I get
> /dev/tty
> /dev/ttyN (where N=0..63
> /dev/ttyAMA0 <== This is RPi Serial0 port on the pin header.
> /dev/ttyprintk
> and:
> /dev/ttyUSB0../dev/ttyUSB3 depending on what is plugged into USB
>
> All in all about 70 devices, but not sure which are actually available
> for use.
>
> Is this an impossible task or can one check for "live" serial ports
> only? If so how?
>
> On Windows I have ported a convoluted function from Delphi, which uses
> Registry reads to give me the list.
>
>
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Re: [Lazarus] Win 7 issue / Re: -dWINDOWS_LIGATURE [[Re: Font ligatures support]]
06.10.2020 16:23, Martin Frb via lazarus пишет: On 06/10/2020 15:09, Maxim Ganetsky via lazarus wrote: Can you try to catch it in the debugger, and see what params are given to NewTextOut in #2 0x00ab95f6 in DRAWHILIGHTMARKUPTOKEN (ATOKENINFO=..., parentfp=0x13abf6e8) at lazsyntextarea.pp:1741 fTextDrawer.NewTextOut(TxtLeft, rcToken.Top, TxtFlags, tok, ATokenInfo.Tk.TokenStart, ATokenInfo.Tk.TokenLength, FEtoBuf); Can you add some debugln in a format convenient to you? This will simplify things, I think. This is in the paint handler, and it is called for each token. So potentially very slow with debugln. But since it is in startup, hopefully you wont have to many. Apply this patch please With this patch applied Lazarus seems to crash on debugln in lazsyntextarea.pp. Just in case, I tried to remove this particular debugln, then it printed 'BEFORE' and nothing more. i:\FPC\lazarus>lazarus --debug-output=.\dbgoutput.txt Hint: (lazarus) [TMainIDE.ParseCmdLineOptions] PrimaryConfigPath="C:\Users\Maxim \AppData\Local\lazarus" Hint: (lazarus) [TMainIDE.ParseCmdLineOptions] SecondaryConfigPath="i:\FPC\lazar us" Hint: (lazarus) [TMainIDE.LoadGlobalOptions] Hint: (lazarus) LastCalled="I:\FPC\lazarus\lazarus.old.working.exe" Hint: (lazarus) CurPrgName="i:\FPC\lazarus\lazarus.exe" Hint: (lazarus) AltPrgName="C:\Users\Maxim\AppData\Local\lazarus\bin\lazarus.exe " Hint: (lazarus) [TBuildManager.SetBuildTarget] Old=i386-win32-win32 New=i386-win 32-win32 Changed: OS/CPU=True LCL=False TApplication.HandleException: EAccessViolation Access violation Stack trace: $00C12B2D DRAWHILIGHTMARKUPTOKEN, line 1740 of lazsyntextarea.pp $00C11C76 PAINTLINES, line 1799 of lazsyntextarea.pp $00C11847 PAINTTEXTLINES, line 1871 of lazsyntextarea.pp $00C113D8 DOPAINT, line 1489 of lazsyntextarea.pp $00C07EA0 PAINT, line 1308 of syneditmiscclasses.pp $00C0FDD2 DOPAINT, line 1134 of lazsyntextarea.pp $00C07EA0 PAINT, line 1308 of syneditmiscclasses.pp $00D9A022 DOPAINT, line 1353 of sourcesyneditor.pas $00C07EA0 PAINT, line 1308 of syneditmiscclasses.pp $0079ECCB PAINT, line 4221 of synedit.pp $005B3471 PAINTWINDOW, line 123 of include/customcontrol.inc $0059BB7B PAINTHANDLER, line 4857 of include/wincontrol.inc $005A00A4 WMPAINT, line 6851 of include/wincontrol.inc $005B3330 WMPAINT, line 103 of include/customcontrol.inc $004103A1 $0059D0A7 WNDPROC, line 5429 of include/wincontrol.inc $007A6B0F WNDPROC, line 6399 of synedit.pp FreeFormEditor: FormEditor1=TFormEditor Hint: (lazarus) [TMainIDE.Destroy] B -> inherited Destroy... TMainIDE Hint: (lazarus) [TMainIDE.Destroy] END Heap dump by heaptrc unit of i:\FPC\lazarus\lazarus.exe 6222427 memory blocks allocated : 556846869/572547168 6211889 memory blocks freed : 555436555/571105040 10538 unfreed memory blocks : 1410314 True heap size : 28114944 (128 used in System startup) True free heap : 25543392 Should be : 25661040 Call trace for block $1CEE6DD0 size 64 $00418EBF $770034A1 $77003473 $76FB0133 $00C11C76 PAINTLINES, line 1799 of lazsyntextarea.pp $00C11847 PAINTTEXTLINES, line 1871 of lazsyntextarea.pp $00C113D8 DOPAINT, line 1489 of lazsyntextarea.pp $00C07EA0 PAINT, line 1308 of syneditmiscclasses.pp $00C0FDD2 DOPAINT, line 1134 of lazsyntextarea.pp $00C07EA0 PAINT, line 1308 of syneditmiscclasses.pp $00D9A022 DOPAINT, line 1353 of sourcesyneditor.pas $00C07EA0 PAINT, line 1308 of syneditmiscclasses.pp $0079ECCB PAINT, line 4221 of synedit.pp $005B3471 PAINTWINDOW, line 123 of include/customcontrol.inc $0059BB7B PAINTHANDLER, line 4857 of include/wincontrol.inc $005A00A4 WMPAINT, line 6851 of include/wincontrol.inc Call trace for block $1C6FECD0 size 92 -- Best regards, Maxim Ganetsky mailto:gan...@narod.ru -- ___ lazarus mailing list lazarus@lists.lazarus-ide.org https://lists.lazarus-ide.org/listinfo/lazarus
Re: [Lazarus] How to list available serial ports on Linux?
By submitting your question to DuckDuckGo, I found https://stackoverflow.com/questions/2530096/how-to-find-all-serial-devices-ttys-ttyusb-on-linux-without-opening-them To quote: |To see which tty's are currently in use, you can simply look into the file /proc/tty/drivers: and get a rather short list of devices. |Does it help? || On 7/10/20 10:35 AM, Bo Berglund via lazarus wrote: Is there a way to list the available (working) serial ports on a Linux platform like the RaspberryPi? I would like to offer a dropdown list of working serial ports to the user to select among, but I am dissuaded from it when I do the following: ls -la /dev/tty* It returns a very long list of serial devices and most of these are probably not even existing in real life. On an RPi I get /dev/tty /dev/ttyN (where N=0..63 /dev/ttyAMA0 <== This is RPi Serial0 port on the pin header. /dev/ttyprintk and: /dev/ttyUSB0../dev/ttyUSB3 depending on what is plugged into USB All in all about 70 devices, but not sure which are actually available for use. Is this an impossible task or can one check for "live" serial ports only? If so how? On Windows I have ported a convoluted function from Delphi, which uses Registry reads to give me the list. -- ___ lazarus mailing list lazarus@lists.lazarus-ide.org https://lists.lazarus-ide.org/listinfo/lazarus
[Lazarus] How to list available serial ports on Linux?
Is there a way to list the available (working) serial ports on a Linux platform like the RaspberryPi? I would like to offer a dropdown list of working serial ports to the user to select among, but I am dissuaded from it when I do the following: ls -la /dev/tty* It returns a very long list of serial devices and most of these are probably not even existing in real life. On an RPi I get /dev/tty /dev/ttyN (where N=0..63 /dev/ttyAMA0 <== This is RPi Serial0 port on the pin header. /dev/ttyprintk and: /dev/ttyUSB0../dev/ttyUSB3 depending on what is plugged into USB All in all about 70 devices, but not sure which are actually available for use. Is this an impossible task or can one check for "live" serial ports only? If so how? On Windows I have ported a convoluted function from Delphi, which uses Registry reads to give me the list. -- Bo Berglund Developer in Sweden -- ___ lazarus mailing list lazarus@lists.lazarus-ide.org https://lists.lazarus-ide.org/listinfo/lazarus
Re: [Lazarus] Win 7 issue / Re: -dWINDOWS_LIGATURE [[Re: Font ligatures support]]
On 06/10/2020 15:09, Maxim Ganetsky via lazarus wrote:
Can you try to catch it in the debugger, and see what params are given
to NewTextOut
in
#2 0x00ab95f6 in DRAWHILIGHTMARKUPTOKEN (ATOKENINFO=...,
parentfp=0x13abf6e8)
at lazsyntextarea.pp:1741
fTextDrawer.NewTextOut(TxtLeft, rcToken.Top, TxtFlags, tok,
ATokenInfo.Tk.TokenStart, ATokenInfo.Tk.TokenLength, FEtoBuf);
Can you add some debugln in a format convenient to you? This will
simplify things, I think.
This is in the paint handler, and it is called for each token. So
potentially very slow with debugln.
But since it is in startup, hopefully you wont have to many.
Apply this patch please
diff --git a/components/synedit/lazsyntextarea.pp
b/components/synedit/lazsyntextarea.pp
index 4c5a599c9b..163af24e6c 100644
--- a/components/synedit/lazsyntextarea.pp
+++ b/components/synedit/lazsyntextarea.pp
@@ -1737,6 +1737,7 @@ procedure TLazSynTextArea.PaintTextLines(AClip:
TRect; FirstLine, LastLine,
if rcToken.Right > nRightEdge + 1 then
tok.Bottom := rcLine.Bottom;
TxtLeft := ScreenColumnToXValue(ATokenInfo.PhysicalCharStart); //
because for the first token, this can be middle of a char, and lead to
wrong frame
+debugln('Calling NewTextOut L: %s rcT: %s tok: %s tkt: %s // %s // eto:
%s', [dbgs(TxtLeft), dbgs(rcToken), dbgs(tok),
dbgMemRange(PByte(ATokenInfo.Tk.TokenStart), ATokenInfo.Tk.TokenLength),
dbgs(ATokenInfo.Tk.TokenLength), dbgs(Length(FEtoBuf.EtoData)) ]);
fTextDrawer.NewTextOut(TxtLeft, rcToken.Top, TxtFlags, tok,
ATokenInfo.Tk.TokenStart, ATokenInfo.Tk.TokenLength, FEtoBuf);
diff --git a/components/synedit/syntextdrawer.pp
b/components/synedit/syntextdrawer.pp
index 834d442563..ddbb09f4df 100644
--- a/components/synedit/syntextdrawer.pp
+++ b/components/synedit/syntextdrawer.pp
@@ -1267,9 +1267,14 @@ procedure TheTextDrawer.NewTextOut(X, Y: Integer;
fuOptions: UINT;
CharPlaceInfo.lpGlyphs:= @Glyphs[0];
CharPlaceInfo.nGlyphs:= Length(Glyphs);
Glyphs[0] := #0;
+debugln('BEFORE');
if GetCharacterPlacementW(FDC, PWChar(W), Length(W), 0,
CharPlaceInfo, GCP_LIGATE or GCP_REORDER or GCP_GLYPHSHAPE)<> 0 then begin
+debugln('GOT PLACEMENT %s / %s / %s', [dbgs(length(Glyphs)),
dbgs(CharPlaceInfo.nGlyphs), dbgs(CharPlaceInfo.lpGlyphs=@Glyphs[0]) ]);
+if CharPlaceInfo.nGlyphs > 0 then begin
+debugln('GOT --- %s / %s', [dbgs(length(Glyphs)),
dbgMemRange(CharPlaceInfo.lpGlyphs, 2*CharPlaceInfo.nGlyphs)]);
Windows.ExtTextOutW(FDC, X, Y, fuOptions or ETO_GLYPH_INDEX,
@ARect, Pointer(Glyphs), CharPlaceInfo.nGlyphs, EtoArray);
exit;
+end;
end;
end;
{$ENDIF}
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Re: [Lazarus] Win 7 issue / Re: -dWINDOWS_LIGATURE [[Re: Font ligatures support]]
06.10.2020 13:32, Martin Frb via lazarus пишет: > On 06/10/2020 01:01, Maxim Ganetsky via lazarus wrote: >> 05.10.2020 18:36, Martin Frb via lazarus пишет: >>> On 05/10/2020 00:27, Maxim Ganetsky via lazarus wrote: Lazarus hangs on start for me on Windows 7 when compiled with this define. Lazarus 2.1.0 r63957 FPC 3.2.0 i386-win32-win32/win64. I use JetBrains Mono font. >>> >>> The other ...TextOut in the lines below that should be kept as they are. >> >> This change does not help. > > Ok, I installed Win7 in a virtualbox, got Lazarus, installed the > "JetBrains mono" font (just the regular, skipped all the > light/italics) and "JetBrains mono Variable". > > No crash. > Ligatures work (well the subset as described in other mail) > > Without any way of reproducing, there isn't much I can do. > > > Can you try to catch it in the debugger, and see what params are given > to NewTextOut > in > #2 0x00ab95f6 in DRAWHILIGHTMARKUPTOKEN (ATOKENINFO=..., > parentfp=0x13abf6e8) > at lazsyntextarea.pp:1741 > > fTextDrawer.NewTextOut(TxtLeft, rcToken.Top, TxtFlags, tok, > ATokenInfo.Tk.TokenStart, ATokenInfo.Tk.TokenLength, FEtoBuf); Can you add some debugln in a format convenient to you? This will simplify things, I think. -- Best regards, Maxim Ganetsky mailto:gan...@narod.ru -- ___ lazarus mailing list lazarus@lists.lazarus-ide.org https://lists.lazarus-ide.org/listinfo/lazarus
Re: [Lazarus] -dWINDOWS_LIGATURE [[Re: Font ligatures support]]
On 04/10/2020 18:05, Martin Frb wrote: On 04/10/2020 10:14, Mr Bee wrote: If it does work, would you please submit it as a patch for the next release? At least, add a note that the font ligatures feature only supports monospaced fonts and only works on Windows. It's better than nothing. revision 63951 Windows only, compile with -dWINDOWS_LIGATURE Tested with Cascadia. I did add a couple of checks. Amended it for right to left languages (Arabic). Arabic only works with certain fonts. And Japanese Katakana seems not to work at all (or I have not found a supporting font, while without this feature it works with "Deja Vue" and others). It appears that this API restricts Windows font substitution abilities. It might be that in order for all this to work, one has to use the newer "uniscribe" API. I also kind of assume that in the current IFDEF code the use of the DX array (ETO) is wrong. But I could not produce any errors from that / And it only would happen if NeedETO = True. So for the moment, this stays highly experimental. -- ___ lazarus mailing list lazarus@lists.lazarus-ide.org https://lists.lazarus-ide.org/listinfo/lazarus
[Lazarus] @Alexey length(Glyph) [[Re: Font ligatures support]]
On 03/10/2020 16:34, Alexey Tor. via lazarus wrote: It's not very simple. see file https://github.com/Alexey-T/ATSynEdit/blob/master/atsynedit/atsynedit_canvasproc.pas and search for "ligatures" in all places. Unit has special code for win32. Just a note if GetCharacterPlacementW(DC, PWChar(Str), Length(Str), 0, @CharPlaceInfo, GCP_LIGATE)<> 0 then Result:= Windows.ExtTextOutW(DC, X, Y, ETO_CLIPPED or ETO_OPAQUE or ETO_GLYPH_INDEX, Rect, Pointer(Glyphs), Length(Glyphs), Dx) Should that be CharPlaceInfo.nGlyphs instead of Length(Glyphs) ? GetCharacterPlacementW may return up to (but therefore also less than) Length(Glyphs) glyphs. So ExtTextOutW should get the adjusted count? -- ___ lazarus mailing list lazarus@lists.lazarus-ide.org https://lists.lazarus-ide.org/listinfo/lazarus
Re: [Lazarus] Win 7 issue / Re: -dWINDOWS_LIGATURE [[Re: Font ligatures support]]
On 06/10/2020 01:01, Maxim Ganetsky via lazarus wrote: 05.10.2020 18:36, Martin Frb via lazarus пишет: On 05/10/2020 00:27, Maxim Ganetsky via lazarus wrote: Lazarus hangs on start for me on Windows 7 when compiled with this define. Lazarus 2.1.0 r63957 FPC 3.2.0 i386-win32-win32/win64. I use JetBrains Mono font. The other ...TextOut in the lines below that should be kept as they are. This change does not help. Ok, I installed Win7 in a virtualbox, got Lazarus, installed the "JetBrains mono" font (just the regular, skipped all the light/italics) and "JetBrains mono Variable". No crash. Ligatures work (well the subset as described in other mail) Without any way of reproducing, there isn't much I can do. Can you try to catch it in the debugger, and see what params are given to NewTextOut in #2 0x00ab95f6 in DRAWHILIGHTMARKUPTOKEN (ATOKENINFO=..., parentfp=0x13abf6e8) at lazsyntextarea.pp:1741 fTextDrawer.NewTextOut(TxtLeft, rcToken.Top, TxtFlags, tok, ATokenInfo.Tk.TokenStart, ATokenInfo.Tk.TokenLength, FEtoBuf); -- ___ lazarus mailing list lazarus@lists.lazarus-ide.org https://lists.lazarus-ide.org/listinfo/lazarus
Re: [Lazarus] -dWINDOWS_LIGATURE [[Re: Font ligatures support]]
-> => >= <= *** .. ... <> >< >> << >>> <<< == != Visual Studio shows all as ligatures except the first one It's trivial - synedit just doesn't TextOut such symbols in one block, ie it doesn't renders '->' as 2 chars but renders it as 2 chars - and >. Same for >>> and <<< etc. -- Regards, Alexey -- ___ lazarus mailing list lazarus@lists.lazarus-ide.org https://lists.lazarus-ide.org/listinfo/lazarus
