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* node onoff module for GPIO control on raspberry

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michael 2020-02-22 23:02:57 +00:00
parent 8032ea166e
commit c581dece39
1 changed files with 55 additions and 0 deletions
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packages/nodejs/nodejsonoff.pas Normal file
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unit nodejsonoff;
{$mode objfpc}
{$modeswitch externalclass}
interface
uses
JS,nodejs;
Type
TGPIOReadCallBack = reference to procedure(err : TJSError; aValue : Byte);
TGPIOWriteCallBack = reference to procedure(err : TJSError);
TNJSGPIO = class external name 'Gpio' (TJSObject)
class var
FAccessible : boolean; external name 'accessible' ;
constructor new (agpio : byte; aDirection : string); overload;
constructor new (agpio : byte; aDirection,aEdge : String); overload;
constructor new (agpio : byte; aDirection,aEdge : string; aOptions : TJSObject); overload;
procedure read; overload;
procedure read(aCallBack : TGPIOReadCallBack); overload;
function readSync : Byte;
procedure write(aValue: Byte); overload;
procedure write(aCallBack : TGPIOWriteCallBack); overload;
procedure writeSync(aValue: Byte);
procedure watch(aCallback : TGPIOReadCallBack);
procedure unwatch(aCallback : TGPIOReadCallBack);
procedure unwatchAll;
function getdirection : string; external name 'direction';
procedure setDirection(aDirection : string);
function getEdge : string; external name 'edge';
procedure setEdge(aEdge : string);
function GetactiveLow : boolean; external name 'activeLow';
procedure setActiveLow(aInvert : Boolean);
procedure unexport;
property Direction : string read getdirection write setdirection;
property Edge : string read GetEdge write SetEdge;
property ActiveLow : Boolean Read getActiveLow write setActiveLow;
class property accessible: boolean Read Faccessible;
const
High = 1;
Low = 0;
end;
TNJSGPIOClass = class of TNJSGPIO;
var
GPIO : TNJSGPIOClass;
implementation
initialization
gpio:=TNJSGPIOClass(require('onoff'));
end.