Is it possible to extend setWatch to include timer interrupts?

Yes you can!
A simple compiled JavaScript function:

function foo() {
  "compiled";
  console.log("hello world");
  return 0;
}

foo();

/* Using up arrow several times in left pane one finds the code below
var foo=E.nativeCall(1,'JsVar()',atob('Len/Q­R1IGUt4RJhHBK5G+AQNB0YaSEzy/WN4RJhHFEuAR­phHBUYTTEBGoEcVSShGeUQAIkz2eTOYRwAhASMqR­o3oSAALRk3yDVaARrBHBkZARqBHKEagRzhGoEcwR­qBHBUsAIJhHBLC96PCBsbACAHU9AQChqwIAhS8BA­HwAAAB2AAAAaAAAAGhlbGxvIHdvcmxkAGNvbnNvb­GUAbG9nAA=='));
*/

Run the program and use the up arrow in the left pane a couple of times to get the native call string.
Using that string one can load it as thumb code in spare memory and call it.

fooHelloThmbcode.js

//used foohello.js to get the string
/* Using up arrow several times in left pane one finds the code below
var foo=E.nativeCall(1,'JsVar()',atob('Len/Q­R1IGUt4RJhHBK5G+AQNB0YaSEzy/WN4RJhHFEuAR­phHBUYTTEBGoEcVSShGeUQAIkz2eTOYRwAhASMqR­o3oSAALRk3yDVaARrBHBkZARqBHKEagRzhGoEcwR­qBHBUsAIJhHBLC96PCBsbACAHU9AQChqwIAhS8BA­HwAAAB2AAAAaAAAAGhlbGxvIHdvcmxkAGNvbnNvb­GUAbG9nAA=='));
*/


var data = atob('Len/QR1IGUt4RJhHBK5G+AQNB0YaSEzy/W­N4RJhHFEuARphHBUYTTEBGoEcVSShGeUQAIkz2eT­OYRwAhASMqRo3oSAALRk3yDVaARrBHBkZARqBHKE­agRzhGoEcwRqBHBUsAIJhHBLC96PCBsbACAHU9AQ­ChqwIAhS8BAHwAAAB2AAAAaAAAAGhlbGxvIHdvcm­xkAGNvbnNvbGUAbG9nAA==');


//var addr = process.memory().stackEndAddress-data.le­ngth;
var addr = process.memory().stackEndAddress;
for(var i=0;i<data.length;i++){
poke8(addr+i,data.charCodeAt(i));
console.log((addr+i).toString(16)+","+pe­ek8(addr+i).toString(16));
}

addr++;

var foo= E.nativeCall(addr, 'JsVar()');

foo();
foo();

and the output

20009bda,67
20009bdb,0
hello world
=undefined
>echo(1)
=undefined
>foo();
hello world
=0
>foo();
hello world
=0
>foo();
hello world
=0
>foo();
hello world
=0
> 

2 Attachments

• fooHello.js
• fooHelloThmbcode.js