Problem with E.toString in Espruino 1v95 on ESP8266-4MB

Problem with E.toString in Espruino 1v95 on ESP8266-4MB

1. Erase flash

2. Flash the chip (uses DIO)

   :: Flash ESP8288-12 4MB chip with Espruino
   set /p pport=Enter a Com port 
   echo %pport%
   pause
   esptool.py --port %pport% --baud 115200 write_flash --flash_freq 40m --flash_mode dio --flash_size 4MB-c1 0x0000 "boot_v1.6.bin" 0x1000 espruino_esp8266_user1.bin 0x3FC000 esp_init_data_default.bin 0x3FE000 blank.bin
   pause
   

3. Run this program

   var chk=512;
   var tdata=new Uint8Array(chk);
   var i;
   for(i=0;i<chk;i++){
   tdata[i]=0x30;
   }//next i
   
   
   function test(){
   for(i=0;i<100;i++){
   console.log(i);
       console.log(E.toString(tdata));
       process.memory();   //optional
   }//next i
   }
   
   setTimeout( function () {
   console.log("hello");
   test();
   }, 1000);
   

4 Here's the output

 1v95 Copyright 2017 G.Williams
Espruino is Open Source. Our work is supported
only by sales of official boards and donations:
http://espruino.com/Donate
Flash map 4MB:1024/1024, manuf 0xc8 chip 0x4016
>
=undefined
hello
0
00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
1    

Skipping some output to save space

49
00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
50
00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
51
000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
 ets Jan  8 2013,rst cause:2, boot mode:(3,6)
load 0x40100000, len 2408, room 16
tail 8
chksum 0xe5
load 0x3ffe8000, len 776, room 0
tail 8
chksum 0x84
load 0x3ffe8310, len 632, room 0
tail 8
chksum 0xd8
csum 0xd8
2nd boot version : 1.6
  SPI Speed      : 40MHz
  SPI Mode       : DIO
  SPI Flash Size & Map: 32Mbit(1024KB+1024KB)
jump to run user1 @ 1000
Œâäƒoä›rƒûg|ìdÄd`Äãr›$Œþ
 _____                 _
|   __|___ ___ ___ _ _|_|___ ___
|   __|_ -| . |  _| | | |   | . |
|_____|___|  _|_| |___|_|_|_|___|
          |_| http://espruino.com
 1v95 Copyright 2017 G.Williams
Espruino is Open Source. Our work is supported
only by sales of official boards and donations:
http://espruino.com/Donate
Flash map 4MB:1024/1024, manuf 0xc8 chip 0x4016
> 

E.toString() is working perfect and is not the root cause.

It is no a good idea to block the esp with large outputs, because this can cause a reboot :)

Hint: use tdata.fill(0x30)

Is the issue that you got bitten by the watchdog as MaBe suggested?

Or are you claiming the output of E.toString() is incorrect? (it's not, 0x30 is ascii code for "0" )

It were the watchdog timer doing the reset.
This works.

var chk=1024;
var tdata=new Uint8Array(chk);
var i=0;

tdata.fill(0x30);

function draino(){
}

D=new draino();

D.on('drain',function(){
 console.log(i);i++;
 console.log(E.toString(tdata));
 process.memory(); //fails if this is commented
});

setInterval(function (){
 D.emit('drain');
},100);

The emit and drain are simulating serving data to a socket.
Code for doing that would obsfucate the issue a bit more.

Gordon has addressed the problem shown by commenting out the process.memory, but his fix isn't in the published 1v95 code yet.

Thanks for the tip about the watchdog. The ESP8266 Espruino is a different paradigm from the Pico. Is there a similar watchdog in the ESP32 Espruino?

Have you tried this on the cutting edge builds yet to see if it's any different?