diff options
Diffstat (limited to 'src/Classes/ULCD.pas')
| -rw-r--r-- | src/Classes/ULCD.pas | 304 |
1 files changed, 304 insertions, 0 deletions
diff --git a/src/Classes/ULCD.pas b/src/Classes/ULCD.pas new file mode 100644 index 00000000..82f7ba2f --- /dev/null +++ b/src/Classes/ULCD.pas @@ -0,0 +1,304 @@ +unit ULCD; + +interface + +{$I switches.inc} + +type + TLCD = class + private + Enabled: boolean; + Text: array[1..6] of string; + StartPos: integer; + LineBR: integer; + Position: integer; + procedure WriteCommand(B: byte); + procedure WriteData(B: byte); + procedure WriteString(S: string); + public + HalfInterface: boolean; + constructor Create; + procedure Enable; + procedure Clear; + procedure WriteText(Line: integer; S: string); + procedure MoveCursor(Line, Pos: integer); + procedure ShowCursor; + procedure HideCursor; + + // for 2x16 + procedure AddTextBR(S: string); + procedure MoveCursorBR(Pos: integer); + procedure ScrollUpBR; + procedure AddTextArray(Line:integer; S: string); + end; + +var + LCD: TLCD; + +const + Data = $378; // domyślny adres portu + Status = Data + 1; + Control = Data + 2; + +implementation + +uses + SysUtils, + {$IFDEF UseSerialPort} + zlportio, + {$ENDIF} + SDL, + UTime; + +procedure TLCD.WriteCommand(B: Byte); +// Wysylanie komend sterujacych +begin +{$IFDEF UseSerialPort} + if not HalfInterface then + begin + zlioportwrite(Control, 0, $02); + zlioportwrite(Data, 0, B); + zlioportwrite(Control, 0, $03); + end + else + begin + zlioportwrite(Control, 0, $02); + zlioportwrite(Data, 0, B and $F0); + zlioportwrite(Control, 0, $03); + + SDL_Delay( 100 ); + + zlioportwrite(Control, 0, $02); + zlioportwrite(Data, 0, (B * 16) and $F0); + zlioportwrite(Control, 0, $03); + end; + + if (B=1) or (B=2) then + Sleep(2) + else + SDL_Delay( 100 ); +{$ENDIF} +end; + +procedure TLCD.WriteData(B: Byte); +// Wysylanie danych +begin +{$IFDEF UseSerialPort} + if not HalfInterface then + begin + zlioportwrite(Control, 0, $06); + zlioportwrite(Data, 0, B); + zlioportwrite(Control, 0, $07); + end + else + begin + zlioportwrite(Control, 0, $06); + zlioportwrite(Data, 0, B and $F0); + zlioportwrite(Control, 0, $07); + + SDL_Delay( 100 ); + + zlioportwrite(Control, 0, $06); + zlioportwrite(Data, 0, (B * 16) and $F0); + zlioportwrite(Control, 0, $07); + end; + + SDL_Delay( 100 ); + Inc(Position); +{$ENDIF} +end; + +procedure TLCD.WriteString(S: string); +// Wysylanie slow +var + I: integer; +begin + for I := 1 to Length(S) do + WriteData(Ord(S[I])); +end; + +constructor TLCD.Create; +begin + inherited; +end; + +procedure TLCD.Enable; +{var + A: byte; + B: byte;} +begin + Enabled := true; + if not HalfInterface then + WriteCommand($38) + else begin + WriteCommand($33); + WriteCommand($32); + WriteCommand($28); + end; + +// WriteCommand($06); +// WriteCommand($0C); +// sleep(10); +end; + +procedure TLCD.Clear; +begin + if Enabled then begin + WriteCommand(1); + WriteCommand(2); + Text[1] := ''; + Text[2] := ''; + Text[3] := ''; + Text[4] := ''; + Text[5] := ''; + Text[6] := ''; + StartPos := 1; + LineBR := 1; + end; +end; + +procedure TLCD.WriteText(Line: integer; S: string); +begin + if Enabled then begin + if Line <= 2 then begin + MoveCursor(Line, 1); + WriteString(S); + end; + + Text[Line] := ''; + AddTextArray(Line, S); + end; +end; + +procedure TLCD.MoveCursor(Line, Pos: integer); +var + I: integer; +begin + if Enabled then begin + Pos := Pos + (Line-1) * 40; + + if Position > Pos then begin + WriteCommand(2); + for I := 1 to Pos-1 do + WriteCommand(20); + end; + + if Position < Pos then + for I := 1 to Pos - Position do + WriteCommand(20); + + Position := Pos; + end; +end; + +procedure TLCD.ShowCursor; +begin + if Enabled then begin + WriteCommand(14); + end; +end; + +procedure TLCD.HideCursor; +begin + if Enabled then begin + WriteCommand(12); + end; +end; + +procedure TLCD.AddTextBR(S: string); +var + Word: string; +// W: integer; + P: integer; + L: integer; +begin + if Enabled then begin + if LineBR <= 6 then begin + L := LineBR; + P := Pos(' ', S); + + if L <= 2 then + MoveCursor(L, 1); + + while (L <= 6) and (P > 0) do begin + Word := Copy(S, 1, P); + if (Length(Text[L]) + Length(Word)-1) > 16 then begin + L := L + 1; + if L <= 2 then + MoveCursor(L, 1); + end; + + if L <= 6 then begin + if L <= 2 then + WriteString(Word); + AddTextArray(L, Word); + end; + + Delete(S, 1, P); + P := Pos(' ', S) + end; + + LineBR := L + 1; + end; + end; +end; + +procedure TLCD.MoveCursorBR(Pos: integer); +{var + I: integer; + L: integer;} +begin + if Enabled then begin + Pos := Pos - (StartPos-1); + if Pos <= Length(Text[1]) then + MoveCursor(1, Pos); + + if Pos > Length(Text[1]) then begin + // bez zawijania +// Pos := Pos - Length(Text[1]); +// MoveCursor(2, Pos); + + // z zawijaniem + Pos := Pos - Length(Text[1]); + ScrollUpBR; + MoveCursor(1, Pos); + end; + end; +end; + +procedure TLCD.ScrollUpBR; +var + T: array[1..5] of string; + SP: integer; + LBR: integer; +begin + if Enabled then begin + T[1] := Text[2]; + T[2] := Text[3]; + T[3] := Text[4]; + T[4] := Text[5]; + T[5] := Text[6]; + SP := StartPos + Length(Text[1]); + LBR := LineBR; + + Clear; + + StartPos := SP; + WriteText(1, T[1]); + WriteText(2, T[2]); + WriteText(3, T[3]); + WriteText(4, T[4]); + WriteText(5, T[5]); + LineBR := LBR-1; + end; +end; + +procedure TLCD.AddTextArray(Line: integer; S: string); +begin + if Enabled then begin + Text[Line] := Text[Line] + S; + end; +end; + +end. + |