espruino-desay-uart.js

// https://www.espruino.com/Reference#l_NRF_setServices
// https://github.com/gfwilliams/workshop-thingy52/blob/master/step5.md
// http://forum.espruino.com/conversations/322805/

var atf={};
var user="";
atf.USER=function(p,t){
  if(p){
    user=p;
  }
  return user;
};
var units=0;
atf.UNITS=function(p,t){
  if(p){
    units=p;
  }
  return units;
};
var hrmon=0;
atf.HRMONITOR=function(p,t){
  if(p){
    hrmon=p;
  }
  return hrmon;
};
var findphone=0;
atf.FINDPHONE=function(p,t){
  if(p){
    findphone=p;
  }
  return findphone;
};
var handsup=0;
atf.HANDSUP=function(p,t){
  if(p){
    handsup=p;
  }
  return handsup;
};
atf.DT=function(params){
      if(params){
        var i,pl=params.length>>1;
        if (pl!=5&&pl!=7) return "ERR";
        //set date
        var p=[];for(i=0;i<pl;i++) p[i]=params.substr(i*2,2);
        i=0;
        w.setClock((pl>6?p[i++]:"20")+p[i++]+"-"+p[i++]+"-"+p[i++]+"T"+p[i++]+":"+p[i++]+":"+(pl>6?p[i++]:"00"));
        return params;
      }
      var d=Date(Date.now()-tzoff).toISOString();res="";
      // cut numbers from ISO date string
      [2,5,8,11,14,17].forEach((i)=>{res+=d.substr(i,2);});
      return res;
};
var TZ=0;
var tzoff=0;
var tform=0;//12 or 24
var lan=0;
var steps=1234;
var syn=0;
var topace=0;
function handleATcommands(cmd,params){
  var res=null;
  var cmdtype=(cmd.substr(1,2).toUpperCase()=="T+")?cmd.charAt(0).toUpperCase():0;
  log("cmd="+cmd+",type="+cmdtype+",params="+params);
  var cmdname=((cmdtype)?cmd.substr(3):cmd).toUpperCase();
  var f=atf[cmdname];if(typeof(f)=="function") return f(params,cmdtype);
  switch(cmdname){
    case 'BOND': // TODO wait for button press, return ERR if not pressed
      return "OK";
    case 'ACT':
      return "0";
    case 'BATT':
      return parseInt((w.battVoltage()-3.6)/0.006);
    case 'STEPSTORE':
      if (params){
      }
      return "OK";
    case 'SYN': // 1= show sync animation (circle arrows)
      if (params){
        syn=Number(params);
      }
      return syn;
    case 'LAN': //
      if (params){
        lan=Number(params);
      }
      return lan;
    case 'TIMEFORMAT': //
      if (params){
        tform=Number(params);
      }
      return tform;
    case 'PACE': // steps
      if (params){
        steps=Number(params);
      }
      return steps;
    case 'DATA': // TODO send stored data
      if (params){
      }
      return "0,0,0,0";
    case 'TOPACE'://if  1 then we should start sending steps via NT+TOPACE=steps on any change
      if (params){
        topace=Number(params);
      }
      // if 0 we report last no. of steps
      return topace===0 ? steps : "OK";
    case 'TIMEZONE':
      if(params){
        res=Number(params);
        if (!isNaN(res) && (Math.abs(res)<=12*3600)){
          TZ=res/3600;
          E.setTimeZone(TZ);
          tzoff=Date().getTimezoneOffset()*6E4;
        }
        return params;
      } 
      return String(TZ*3600);
    case "VER":
      return cmdtype ? (cmdtype=="A" ? "110.200.051" : "100.016.051") : process.env.VERSION;
  }
  return res;
}

function handleATLine(l){
  var cmd,params,res=null,pari=l.indexOf('='); //any params?
  if(pari>0){
    cmd=l.slice(0,pari);params=l.slice(pari+1);
  } else {
    params=null;cmd=l;
  }
  if (cmd.length==2 && cmd.toUpperCase()=="AT") return "OK\r\n";
  //type - 0 or first letter - b,a,n if starts with [ABN]T+
  try {
    res=handleATcommands(cmd,params);
  } catch(e){
    //log(e);
    if (cmdtype) res="ERR";
  }
  return (res===null) ? null : cmd+":"+res+"\r\n";
}

var line="";
function handleCommand(s){
  line+=s;
  if (s.endsWith("\n") || s.endsWith("\r")){
    var res=handleATLine(line.trim());//trim removes crlf
    line="";
    return res;
  }
}

function handleWrite(evt, svc, ch){
  //log(svc+" got "+evt.data);
  var val=handleCommand(E.toString(evt.data));
  if (val===undefined || val===null) return;
  if (typeof(val)==="number") val=val.toString();
  if (typeof(val)==="string") {
    log("reply="+val);
    val=E.toArrayBuffer(val);
  }
  if (!val.length) return;
  // now update service with the value
  var c={};
  var s={};s[svc]=c;
  c[ch]={value : val, notify: true};
  if (val.length<=20)
    NRF.updateServices(s);
  else {
    // if longer than maxLen=20 split into chunks
    var l=val.length;
    var i=0;
    while (l>0){
      c[ch].value=new Uint8Array(val,i,(l>20)?20:l);
      NRF.updateServices(s);
      i+=20;l-=20;
    }
  }
}
function enableDesayServices(){
NRF.setAdvertising({},{
  name:"HX03W",
  discoverable: false/*,
  manufacturer:0xAB4E,
  manufacturerData: NRF.getAddress().split(':').map(x=>parseInt(x,16))*/
});
NRF.setServices({
  0x190A : {
    0x0002 : {
      maxLen: 20,
      notify: true
    },
    0x0001 : {
      writable : true,
      maxLen: 20,
      onWrite : function(evt) {
        handleWrite(evt,'0x190A','0x0002');
      }
    }
  },
   0x190B : {
    0x0004 : {
      maxLen: 20,
      notify: true
    },
    0x0003 : {
      writable : true,
      maxLen: 20,
      onWrite : function(evt) {
        handleWrite(evt,'0x190B','0x0004');
      }
    }
  }
 }, {
  uart:false/*,advertise: [ 'FEE7' ]*/
});
}

function enableNordicUART(){
NRF.setServices(undefined,{uart:true});
}