WebIde not compiling code at upload time if already connected except if reconnection at upload?

[espruino-discuss3]

Posted at 2018-02-15 by asez73

I have some errors when trying the example below on an original Espruino Rev 1.4b.

var c = E.compiledC(`
    // int sum(int, int)
    int sum(int len, unsigned char *data){
      int s = 0;
      while (len--)
        s += *(data++);
      return s;
    }
    `);
    var str  = E.toString("\1\2\3\4\5\6"); // create a flat string
    print(c.sum(str.length, E.getAddressOf(str,true)));

It goes well, see first and second logs below, if I disconnect from webide, then upload the very same example, reconnecting at the prompt from wedide (0.68.5) just before it uploads the source. There no need to disconnect physically the board.

No error or just warnings, and a correct result of 21.

Note that printing process.env.EXPORTS gave once a truncated string with no closing " and no ending } and no prompt for the next command until I press the Enter key on the left side of the WebIde. Then I get the rest of the strings, json closed and prompt. This is also true on the error case.
On the other hand, process.env sends a full JSON with everything apparently correct.

>
 _____                 _
|   __|___ ___ ___ _ _|_|___ ___
|   __|_ -| . |  _| | | |   | . |
|_____|___|  _|_| |___|_|_|_|___|
          |_| http://espruino.com
 1v95 Copyright 2017 G.Williams
>21
=undefined
>process.env.EXPORTS
={ "jsvLock": 131929, "jsvLockAgainSafe": 131915, "jsvUnLock": 131889, "jsvSkipName": 19429,
  "jsvMathsOp": 24927, "jsvMathsOpSkipNames": 24977, "jsvNewFromFloat": 132269, "jsvNewFromInteger": 132305, "jsvNewFromString": 133473,
  "jsvNewFromBool": 132289, "jsvGetFloat": 19713, "jsvGetInteger": 17081, "jsvGetBool": 20437, "jspeiFindInScopes": 31009,
  "jspReplaceWith": 31069, "jspeFunctionCall": 35349, "jspGetNamedVariable": 188129, "jspGetNamedField": 189697, "jspGetVarNamedField": 189293,
  "jsvNewWithFlags": 132085 }
> process.env
={
  "VERSION": "1v95",
  "BUILD_DATE": "Dec 15 2017",
  "BUILD_TIME": "17:07:34",
  "GIT_COMMIT": "7dbffcf5da09570bd95714b2386a12ab25ab1d50",
  "BOARD": "ESPRUINOBOARD",
  "CHIP": "STM32F103RCT6",
  "CHIP_FAMILY": "STM32F1",
  "FLASH": 262144, "RAM": 49152,
  "SERIAL": "34ffdb05-42573838-24631743",
  "CONSOLE": "USB",
  "EXPORTS": { "jsvLock": 131929, "jsvLockAgainSafe": 131915, "jsvUnLock": 131889, "jsvSkipName": 19429,
    "jsvMathsOp": 24927, "jsvMathsOpSkipNames": 24977, "jsvNewFromFloat": 132269, "jsvNewFromInteger": 132305, "jsvNewFromString": 133473,
    "jsvNewFromBool": 132289, "jsvGetFloat": 19713, "jsvGetInteger": 17081, "jsvGetBool": 20437, "jspeiFindInScopes": 31009,
    "jspReplaceWith": 31069, "jspeFunctionCall": 35349, "jspGetNamedVariable": 188129, "jspGetNamedField": 189697, "jspGetVarNamedField": 189293,
    "jsvNewWithFlags": 132085 }
 }
> 

Ide log corresponding:

ERROR: RECEIVE ERROR: {"connectionId":1,"error":"device_lost"}
Disconnect callback...
WARNING: [notify_warn] Disconnected
>>> Disconnected
>>> Connecting...
ForceThrottle option is set - set Slow Write = true
[object Object]
Connected [object Object]
Found a prompt... great!
>>> Sending...
---> "\u0010console.log(\"<\",\"<<\",JSON.stringify(process.env),\">>\",\">\")\n"
>>> Sent
Got "< << {\"VERSION\":\"1v95\",\"BUILD_DATE\":\"Dec 15 2017\",\"BUILD_TIME\":\"17:07:34\",\"GIT_COMMIT\":\"7dbffcf5da09570bd95714b2386a12ab25ab1d50\",\"BOARD\":\"ESPRUINOBOARD\",\"CHIP\":\"STM32F103RCT6\",\"CHIP_FAMILY\":\"STM32F1\",\"FLASH\":262144,\"RAM\":49152,\"SERIAL\":\"34ffdb05-42573838-24631743\",\"CONSOLE\":\"USB\",\"EXPORTS\":{\"jsvLock\":131929,\"jsvLockAgainSafe\":131915,\"jsvUnLock\":131889,\"jsvSkipName\":19429,\"jsvMathsOp\":24927,\"jsvMathsOpSkipNames\":24977,\"jsvNewFromFloat\":132269,\"jsvNewFromInteger\":132305,\"jsvNewFromString\":133473,\"jsvNewFromBool\":132289,\"jsvGetFloat\":19713,\"jsvGetInteger\":17081,\"jsvGetBool\":20437,\"jspeiFindInScopes\":31009,\"jspReplaceWith\":31069,\"jspeFunctionCall\":35349,\"jspGetNamedVariable\":188129,\"jspGetNamedField\":189697,\"jspGetVarNamedField\":189293,\"jsvNewWithFlags\":132085}} >> >\r\n"
Loading http://www.espruino.com/json/ESPRUINOBOARD.json
Searching for json/ESPRUINOBOARD.json
json/ESPRUINOBOARD.json found in offline archive
Board JSON loaded
Firmware >1.43 supports faster writes over USB
ForceThrottle option is set - set Slow Write = true
FIRMWARE: Current 1v95, Available 1v95
Device found (connectionId=2)
[success] Connected to port /dev/ttyACM0
>>> Connected to port /dev/ttyACM0
WARNING: [notify_warn] Errors while minifying - sending unminified code.
Found a prompt... great!
>>> Sending...
---> "\u0010reset();\n\u0010setTime(1518684180.54);\n\u0010var c = (function(){\u001b\n  var bin=atob(\"ChgAIJFCA9AR+AE7GET553BHAAA=\");\u001b\n  return {\u001b\n    sum:E.nativeCall(1, \"int(int, int)\", bin),\u001b\n  };\u001b\n})();\n\u0010var str  = E.toString(\"\\1\\2\\3\\4\\5\\6\");\n\u0010print(c.sum(str.length, E.getAddressOf(str,true)));\n\n"
Splitting at "reset();\n", delay 250
ERROR: [notify_error] Input_0:8: ERROR

[espruino-discuss3]

Posted at 2018-02-15 by asez73

Better logs for this problem:

A- Success if disconnecting WebIde before uploading, thus it reconnects itself. I just choose the serial link for the board.

Connected
>
>
 _____                 _
|   __|___ ___ ___ _ _|_|___ ___
|   __|_ -| . |  _| | | |   | . |
|_____|___|  _|_| |___|_|_|_|___|
          |_| http://espruino.com
 1v95 Copyright 2017 G.Williams
>21
=undefined
> 

We have chrome.serial - not using 'serialport' module
serial_audio: Audio Sample rate : 44100
serial_audio: Audio Serial Baud 9600 Bit time 4.59375
GET chrome.storage.sync = {"AUTO_SAVE_CODE":true,"BAUD_RATE":9600,"BLOCKLY_EXTENSIONS":"|bluetooth|robot|","BLOCKLY_LANGUAGE":"en","BLOCKLY_TO_JS":false,"BOARD_JSON_URL":"http://www.espruino.com/json","CODE":"    var c = E.compiledC(`\n    // int sum(int, int)\n    int sum(int len, unsigned char *data){\n      int s = 0;\n      while (len--)\n        s += *(data++);\n      return s;\n    }\n    `);\n    var str  = E.toString(\"\\1\\2\\3\\4\\5\\6\"); // create a flat string\n    print(c.sum(str.length, E.getAddressOf(str,true)));","COMPILATION":true,"COMPILATION_URL":"http://www.espruino.com:32766","DISABLE_CODE_HINTS":false,"ENABLE_Testing":true,"ENV_ON_CONNECT":true,"FONT_SIZE":12,"FREQUENCY_Testing":1000,"MINIFICATION_DeadCode":true,"MINIFICATION_LEVEL":"SIMPLE_OPTIMIZATIONS","MINIFICATION_Literal":true,"MINIFICATION_Mangle":true,"MINIFICATION_Unreachable":true,"MINIFICATION_Unused":true,"MODULE_AS_FUNCTION":false,"MODULE_EXTENSIONS":".min.js|.js","MODULE_MINIFICATION_LEVEL":"SIMPLE_OPTIMIZATIONS","MODULE_PROXY_ENABLED":false,"MODULE_PROXY_PORT":"","MODULE_PROXY_URL":"","MODULE_URL":"http://www.espruino.com/modules","NPM_MODULES":false,"OFFLINE_DATA":"","OFFLINE_DATA_DOWNLOAD":"","OFFLINE_DATA_UPLOAD":"","OFFLINE_ENABLED":true,"RESET_BEFORE_SEND":true,"SAVE_ON_SEND":false,"SERIAL_AUDIO":"0","SERIAL_TCPIP":"","SERIAL_THROTTLE_SEND":true,"SET_TIME_ON_WRITE":true,"SHOW_CODE_LINK_ICON":true,"SHOW_RELOAD_ICON":true,"SHOW_WEBCAM_ICON":true,"STORE_LINE_NUMBERS":false,"Sound_Error":"","Sound_Info":"","Sound_Success":"","Sound_Warning":"","Speak_Error":false,"Speak_Info":false,"Speak_Success":false,"Speak_Warning":false,"UI_MODE":"compact","WEBCAM_CONSTRAINTS":0,"WEB_BLUETOOTH":true,"projectEntry":"645CE808FCEC404709C322927E633191:Espruino pico"}
Initialising SettingsConsole
Initialising Utils
Initialising Config
Initialising Notifications
Initialising Status
Initialising App
Initialising File
Initialising Code
Initialising Serial
  - Initialising Serial Chrome Serial
  - Initialising Serial Chrome Socket
  - Initialising Serial Web Audio
  - Initialising Serial Web Bluetooth
Initialising Terminal
Initialising CodeWriter
Initialising Modules
Initialising Env
Initialising Flasher
Initialising EditorBlockly
Initialising EditorJavaScript
Initialising Send
Initialising MenuPortSelector
Initialising MenuSettings
Initialising MenuFlasher
Initialising SettingsAbout
Initialising SettingsFlasher
Initialising BoardJSON
Initialising VersionChecker
Initialising Compiler
Initialising Assembler
Initialising GetGitHub
Initialising SetTime
Initialising Unicode
Initialising Minify
Initialising SaveOnSend
Initialising Tutorial
Initialising Webcam
Initialising FontSize
Initialising UiMode
Initialising URLHandler
Initialising CodeLink
Initialising Project
Initialising Testing
Initialising Notification_Sound
Initialising Tern
Initialising Debugger
Initialising Tour
Initialising SettingsProfile
Initialising HelpLinks
Initialising Offline
Loaded code from storage.
GET chrome.storage.local.OFFLINE_DATA = 497080 bytes
No navigator.bluetooth - Web Bluetooth not enabled
>>> Connecting...
ForceThrottle option is set - set Slow Write = true
[object Object]
Connected [object Object]
Found a prompt... great!
>>> Sending...
---> "\u0010console.log(\"<\",\"<<\",JSON.stringify(process.env),\">>\",\">\")\n"
>>> Sent
Got "< << {\"VERSION\":\"1v95\",\"BUILD_DATE\":\"Dec 15 2017\",\"BUILD_TIME\":\"17:07:34\",\"GIT_COMMIT\":\"7dbffcf5da09570bd95714b2386a12ab25ab1d50\",\"BOARD\":\"ESPRUINOBOARD\",\"CHIP\":\"STM32F103RCT6\",\"CHIP_FAMILY\":\"STM32F1\",\"FLASH\":262144,\"RAM\":49152,\"SERIAL\":\"34ffdb05-42573838-24631743\",\"CONSOLE\":\"USB\",\"EXPORTS\":{\"jsvLock\":131929,\"jsvLockAgainSafe\":131915,\"jsvUnLock\":131889,\"jsvSkipName\":19429,\"jsvMathsOp\":24927,\"jsvMathsOpSkipNames\":24977,\"jsvNewFromFloat\":132269,\"jsvNewFromInteger\":132305,\"jsvNewFromString\":133473,\"jsvNewFromBool\":132289,\"jsvGetFloat\":19713,\"jsvGetInteger\":17081,\"jsvGetBool\":20437,\"jspeiFindInScopes\":31009,\"jspReplaceWith\":31069,\"jspeFunctionCall\":35349,\"jspGetNamedVariable\":188129,\"jspGetNamedField\":189697,\"jspGetVarNamedField\":189293,\"jsvNewWithFlags\":132085}} >> >\r\n"
Loading http://www.espruino.com/json/ESPRUINOBOARD.json
Searching for json/ESPRUINOBOARD.json
json/ESPRUINOBOARD.json found in offline archive
Board JSON loaded
Firmware >1.43 supports faster writes over USB
ForceThrottle option is set - set Slow Write = true
FIRMWARE: Current 1v95, Available 1v95
Device found (connectionId=1)
[success] Connected to port /dev/ttyACM0
>>> Connected to port /dev/ttyACM0
WARNING: [notify_warn] Errors while minifying - sending unminified code.
Found a prompt... great!
>>> Sending...
---> "\u0010reset();\n\u0010setTime(1518687384.349);\n\u0010var c = (function(){\u001b\n  var bin=atob(\"ChgAIJFCA9AR+AE7GET553BHAAA=\");\u001b\n  return {\u001b\n    sum:E.nativeCall(1, \"int(int, int)\", bin),\u001b\n  };\u001b\n})();\n\u0010var str  = E.toString(\"\\1\\2\\3\\4\\5\\6\");\n\u0010print(c.sum(str.length, E.getAddressOf(str,true)));\n\n"
Splitting at "reset();\n", delay 250
ERROR: [notify_error] Input_0:8: ERROR - This style of octal literal is not supported in strict mode.
ERROR: [notify_error] var str  = E.toString("\1\2\3\4\5\6"); // create a flat string
ERROR: [notify_error] ^
>>> Sent

---

Posted at 2018-02-15 by @gfwilliams

This seems to be an issue with communications with the board rather than with the compiler.

Do you have a Web IDE log for what happens when it's not working?

Specifically I'm interested in the bits right after:

>>> Sending...
---> "\u0010console.log(\"<\",\"<<\",JSON.str­ingify(process.env),\">>\",\">\")\n"

In all the logs so far you've only posted it when it was working correctly.

Please can you also just reboot your PC, and reconnect the Espruino board with a different USB cable (just in case). It could just be that the USB driver has got in a weird state.

---

Posted at 2018-02-15 by asez73

B- Now, just uploaded the very same source after the success posted above, this time the borad is not recognised:

 _____                 _
|   __|___ ___ ___ _ _|_|___ ___
|   __|_ -| . |  _| | | |   | . |
|_____|___|  _|_| |___|_|_|_|___|
          |_| http://espruino.com
 1v95 Copyright 2017 G.Williams
>Uncaught Error: Function "compiledC" not found!
 at line 1 col 11
var c = E.compiledC(`
          ^
Uncaught Error: Field or method "sum" does not already exist, and can't create it on undefined
 at line 1 col 8
print(c.sum(str.length, E.getAddressOf(str,true)));
       ^
=undefined
>process.env
={
  "VERSION": "1v95",
  "BUILD_DATE": "Dec 15 2017",
  "BUILD_TIME": "17:07:34",
  "GIT_COMMIT": "7dbffcf5da09570bd95714b2386a12ab25ab1d50",
  "BOARD": "ESPRUINOBOARD",
  "CHIP": "STM32F103RCT6",
  "CHIP_FAMILY": "STM32F1",
  "FLASH": 262144, "RAM": 49152,
  "SERIAL": "34ffdb05-42573838-24631743",
  "CONSOLE": "USB",
  "EXPORTS": { "jsvLock": 131929, "jsvLockAgainSafe": 131915, "jsvUnLock": 131889, "jsvSkipName": 19429,
    "jsvMathsOp": 24927, "jsvMathsOpSkipNames": 24977, "jsvNewFromFloat": 132269, "jsvNewFromInteger": 132305, "jsvNewFromString": 133473,
    "jsvNewFromBool": 132289, "jsvGetFloat": 19713, "jsvGetInteger": 17081, "jsvGetBool": 20437, "jspeiFindInScopes": 31009,
    "jspReplaceWith": 31069, "jspeFunctionCall": 35349, "jspGetNamedVariable": 188129, "jspGetNamedField": 189697, "jspGetVarNamedField": 189293,
    "jsvNewWithFlags": 132085 }
 }
> 

---> "\u0010console.log(\"<\",\"<<\",JSON.stringify(process.env),\">>\",\">\")\n"
>>> Sent
Got "< << {\"VERSION\":\"1v95\",\"BUILD_DATE\":\"Dec 15 2017\",\"BUILD_TIME\":\"17:07:34\",\"GIT_COMMIT\":\"7dbffcf5da09570bd95714b2386a12ab25ab1d50\",\"BOARD\":\"ESPRUINOBOARD\",\"CHIP\":\"STM32F103RCT6\",\"CHIP_FAMILY\":\"STM32F1\",\"FLASH\":262144,\"RAM\":49152,\"SERIAL\":\"34ffdb05-42573838-24631743\",\"CONSOLE\":\"USB\",\"EXPORTS\":{\"jsvLock\":131929,\"jsvLockAgainSafe\":131915,\"jsvUnLock\":131889,\"jsvSkipName\":19429,\"jsvMathsOp\":24927,\"jsvMathsOpSkipNames\":24977,\"jsvNewFromFloat\":132269,\"jsvNewFromInteger\":132305,\"jsvNewFromString\":133473,\"jsvNewFromBool\":132289,\"jsvGetFloat\":19713,\"jsvGetInteger\":17081,\"jsvGetBool\":20437,\"jspeiFindInScopes\":31009,\"jspReplaceWith\":31069,\"jspeFunctionCall\":35349,\"jspGetNamedVariable\":188129,\"jspGetNamedField\":189697,\"jspGetVarNamedField\":189293,\"jsvNewWithFlags\":132085}} >> >\r\n"
Loading http://www.espruino.com/json/ESPRUINOBOARD.json
Searching for json/ESPRUINOBOARD.json
json/ESPRUINOBOARD.json found in offline archive
Board JSON loaded
Firmware >1.43 supports faster writes over USB
ForceThrottle option is set - set Slow Write = true
FIRMWARE: Current 1v95, Available 1v95
Device found (connectionId=2)
[success] Connected to port /dev/ttyACM0
>>> Connected to port /dev/ttyACM0
WARNING: [notify_warn] Errors while minifying - sending unminified code.
Found a prompt... great!
>>> Sending...
---> "\u0010reset();\n\u0010setTime(1518688159.377);\n\u0010var c = (function(){\u001b\n  var bin=atob(\"ChgAIJFCA9AR+AE7GET553BHAAA=\");\u001b\n  return {\u001b\n    sum:E.nativeCall(1, \"int(int, int)\", bin),\u001b\n  };\u001b\n})();\n\u0010var str  = E.toString(\"\\1\\2\\3\\4\\5\\6\");\n\u0010print(c.sum(str.length, E.getAddressOf(str,true)));\n\n"
Splitting at "reset();\n", delay 250
ERROR: [notify_error] Input_0:8: ERROR - This style of octal literal is not supported in strict mode.
ERROR: [notify_error] var str  = E.toString("\1\2\3\4\5\6"); // create a flat string
ERROR: [notify_error] ^
>>> Sent

---

Posted at 2018-02-15 by @gfwilliams

In the IDE log you just posted above, it has worked just fine!

Please post the IDE log that corresponds with what appeared on the terminal.

---

Posted at 2018-02-15 by asez73

Ok, rebooted, changed cable and full log IT failed!

Connected
>Loading 1389 bytes from flash...
>
>
 _____                 _
|   __|___ ___ ___ _ _|_|___ ___
|   __|_ -| . |  _| | | |   | . |
|_____|___|  _|_| |___|_|_|_|___|
          |_| http://espruino.com
 1v95 Copyright 2017 G.Williams
>Uncaught Error: Function "compiledC" not found!
 at line 1 col 11
var c = E.compiledC(`
          ^
Uncaught Error: Field or method "sum" does not already exist, and can't create it on undefined
 at line 1 col 8
print(c.sum(str.length, E.getAddressOf(str,true)));
       ^
=undefined
> 

We have chrome.serial - not using 'serialport' module
serial_audio: Audio Sample rate : 44100
serial_audio: Audio Serial Baud 9600 Bit time 4.59375
GET chrome.storage.sync = {"AUTO_SAVE_CODE":true,"BAUD_RATE":9600,"BLOCKLY_EXTENSIONS":"|bluetooth|robot|","BLOCKLY_LANGUAGE":"en","BLOCKLY_TO_JS":false,"BOARD_JSON_URL":"http://www.espruino.com/json","CODE":"    var c = E.compiledC(`\n    // int sum(int, int)\n    int sum(int len, unsigned char *data){\n      int s = 0;\n      while (len--)\n        s += *(data++);\n      return s;\n    }\n    `);\n    var str  = E.toString(\"\\1\\2\\3\\4\\5\\6\"); // create a flat string\n    print(c.sum(str.length, E.getAddressOf(str,true)));","COMPILATION":true,"COMPILATION_URL":"http://www.espruino.com:32766","DISABLE_CODE_HINTS":false,"ENABLE_Testing":true,"ENV_ON_CONNECT":true,"FONT_SIZE":12,"FREQUENCY_Testing":1000,"MINIFICATION_DeadCode":true,"MINIFICATION_LEVEL":"SIMPLE_OPTIMIZATIONS","MINIFICATION_Literal":true,"MINIFICATION_Mangle":true,"MINIFICATION_Unreachable":true,"MINIFICATION_Unused":true,"MODULE_AS_FUNCTION":false,"MODULE_EXTENSIONS":".min.js|.js","MODULE_MINIFICATION_LEVEL":"SIMPLE_OPTIMIZATIONS","MODULE_PROXY_ENABLED":false,"MODULE_PROXY_PORT":"","MODULE_PROXY_URL":"","MODULE_URL":"http://www.espruino.com/modules","NPM_MODULES":false,"OFFLINE_DATA":"","OFFLINE_DATA_DOWNLOAD":"","OFFLINE_DATA_UPLOAD":"","OFFLINE_ENABLED":true,"RESET_BEFORE_SEND":true,"SAVE_ON_SEND":false,"SERIAL_AUDIO":"0","SERIAL_TCPIP":"","SERIAL_THROTTLE_SEND":true,"SET_TIME_ON_WRITE":true,"SHOW_CODE_LINK_ICON":true,"SHOW_RELOAD_ICON":true,"SHOW_WEBCAM_ICON":true,"STORE_LINE_NUMBERS":false,"Sound_Error":"","Sound_Info":"","Sound_Success":"","Sound_Warning":"","Speak_Error":false,"Speak_Info":false,"Speak_Success":false,"Speak_Warning":false,"UI_MODE":"compact","WEBCAM_CONSTRAINTS":0,"WEB_BLUETOOTH":true,"projectEntry":"645CE808FCEC404709C322927E633191:Espruino pico"}
Initialising SettingsConsole
Initialising Utils
Initialising Config
Initialising Notifications
Initialising Status
Initialising App
Initialising File
Initialising Code
Initialising Serial
  - Initialising Serial Chrome Serial
  - Initialising Serial Chrome Socket
  - Initialising Serial Web Audio
  - Initialising Serial Web Bluetooth
Initialising Terminal
Initialising CodeWriter
Initialising Modules
Initialising Env
Initialising Flasher
Initialising EditorBlockly
Initialising EditorJavaScript
Initialising Send
Initialising MenuPortSelector
Initialising MenuSettings
Initialising MenuFlasher
Initialising SettingsAbout
Initialising SettingsFlasher
Initialising BoardJSON
Initialising VersionChecker
Initialising Compiler
Initialising Assembler
Initialising GetGitHub
Initialising SetTime
Initialising Unicode
Initialising Minify
Initialising SaveOnSend
Initialising Tutorial
Initialising Webcam
Initialising FontSize
Initialising UiMode
Initialising URLHandler
Initialising CodeLink
Initialising Project
Initialising Testing
Initialising Notification_Sound
Initialising Tern
Initialising Debugger
Initialising Tour
Initialising SettingsProfile
Initialising HelpLinks
Initialising Offline
Loaded code from storage.
GET chrome.storage.local.OFFLINE_DATA = 497080 bytes
No navigator.bluetooth - Web Bluetooth not enabled
>>> Connecting...
ForceThrottle option is set - set Slow Write = true
[object Object]
Connected [object Object]
Found a prompt... great!
>>> Sending...
---> "\u0010console.log(\"<\",\"<<\",JSON.stringify(process.env),\">>\",\">\")\n"
>>> Sent
Got "< << {\"VERSION\":\"1v95\",\"BUILD_DATE\":\"Dec 15 2017\",\"BUILD_TIME\":\"17:07:34\",\"GIT_COMMIT\":\"7dbffcf5da09570bd95714b2386a12ab25ab1d50\",\"BOARD\":\"ESPRUINOBOARD\",\"CHIP\":\"STM32F103RCT6\",\"CHIP_FAMILY\":\"STM32F1\",\"FLASH\":262144,\"RAM\":49152,\"SERIAL\":\"34ffdb05-42573838-24631743\",\"CONSOLE\":\"USB\",\"EXPORTS\":{\"jsvLock\":131929,\"jsvLockAgainSafe\":131915,\"jsvUnLock\":131889,\"jsvSkipName\":19429,\"jsvMathsOp\":24927,\"jsvMathsOpSkipNames\":24977,\"jsvNewFromFloat\":132269,\"jsvNewFromInteger\":132305,\"jsvNewFromString\":133473,\"jsvNewFromBool\":132289,\"jsvGetFloat\":19713,\"jsvGetInteger\":17081,\"jsvGetBool\":20437,\"jspeiFindInScopes\":31009,\"jspReplaceWith\":31069,\"jspeFunctionCall\":35349,\"jspGetNamedVariable\":188129,\"jspGetNamedField\":189697,\"jspGetVarNamedField\":189293,\"jsvNewWithFlags\":132085}} >> >\r\n"
Loading http://www.espruino.com/json/ESPRUINOBOARD.json
Searching for json/ESPRUINOBOARD.json
json/ESPRUINOBOARD.json found in offline archive
Board JSON loaded
Firmware >1.43 supports faster writes over USB
ForceThrottle option is set - set Slow Write = true
FIRMWARE: Current 1v95, Available 1v95
Device found (connectionId=1)
[success] Connected to port /dev/ttyACM0
>>> Connected to port /dev/ttyACM0
ERROR: [notify_error] Compiler not active as no process.env.EXPORTS/EXPTR available.<br/>Is your board supported and firmware up to date?
WARNING: [notify_warn] Errors while minifying - sending unminified code.
Found a prompt... great!
>>> Sending...
---> "\u0010reset();\n\u0010setTime(1518688740.932);\n\u0010var c = E.compiledC(`\n    // int sum(int, int)\n    int sum(int len, unsigned char *data){\n      int s = 0;\n      while (len--)\n        s += *(data++);\n      return s;\n    }\n    `);\n\u0010var str  = E.toString(\"\\1\\2\\3\\4\\5\\6\");\n\u0010print(c.sum(str.length, E.getAddressOf(str,true)));\n\n"
Splitting at "reset();\n", delay 250
ERROR: [notify_error] Input_0:11: ERROR - This style of octal literal is not supported in strict mode.
ERROR: [notify_error] var str  = E.toString("\1\2\3\4\5\6"); // create a flat string
ERROR: [notify_error] ^
>>> Sent

---

Posted at 2018-02-15 by asez73

Now disconnected and uploaded again:

Disconnected
Connected
>
>
 _____                 _
|   __|___ ___ ___ _ _|_|___ ___
|   __|_ -| . |  _| | | |   | . |
|_____|___|  _|_| |___|_|_|_|___|
          |_| http://espruino.com
 1v95 Copyright 2017 G.Williams
>21
=undefined
> 

And full log after first fail and second success:

Initialising Terminal
Initialising CodeWriter
Initialising Modules
Initialising Env
Initialising Flasher
Initialising EditorBlockly
Initialising EditorJavaScript
Initialising Send
Initialising MenuPortSelector
Initialising MenuSettings
Initialising MenuFlasher
Initialising SettingsAbout
Initialising SettingsFlasher
Initialising BoardJSON
Initialising VersionChecker
Initialising Compiler
Initialising Assembler
Initialising GetGitHub
Initialising SetTime
Initialising Unicode
Initialising Minify
Initialising SaveOnSend
Initialising Tutorial
Initialising Webcam
Initialising FontSize
Initialising UiMode
Initialising URLHandler
Initialising CodeLink
Initialising Project
Initialising Testing
Initialising Notification_Sound
Initialising Tern
Initialising Debugger
Initialising Tour
Initialising SettingsProfile
Initialising HelpLinks
Initialising Offline
Loaded code from storage.
GET chrome.storage.local.OFFLINE_DATA = 497080 bytes
No navigator.bluetooth - Web Bluetooth not enabled
>>> Connecting...
ForceThrottle option is set - set Slow Write = true
[object Object]
Connected [object Object]
Found a prompt... great!
>>> Sending...
---> "\u0010console.log(\"<\",\"<<\",JSON.stringify(process.env),\">>\",\">\")\n"
>>> Sent
Got "< << {\"VERSION\":\"1v95\",\"BUILD_DATE\":\"Dec 15 2017\",\"BUILD_TIME\":\"17:07:34\",\"GIT_COMMIT\":\"7dbffcf5da09570bd95714b2386a12ab25ab1d50\",\"BOARD\":\"ESPRUINOBOARD\",\"CHIP\":\"STM32F103RCT6\",\"CHIP_FAMILY\":\"STM32F1\",\"FLASH\":262144,\"RAM\":49152,\"SERIAL\":\"34ffdb05-42573838-24631743\",\"CONSOLE\":\"USB\",\"EXPORTS\":{\"jsvLock\":131929,\"jsvLockAgainSafe\":131915,\"jsvUnLock\":131889,\"jsvSkipName\":19429,\"jsvMathsOp\":24927,\"jsvMathsOpSkipNames\":24977,\"jsvNewFromFloat\":132269,\"jsvNewFromInteger\":132305,\"jsvNewFromString\":133473,\"jsvNewFromBool\":132289,\"jsvGetFloat\":19713,\"jsvGetInteger\":17081,\"jsvGetBool\":20437,\"jspeiFindInScopes\":31009,\"jspReplaceWith\":31069,\"jspeFunctionCall\":35349,\"jspGetNamedVariable\":188129,\"jspGetNamedField\":189697,\"jspGetVarNamedField\":189293,\"jsvNewWithFlags\":132085}} >> >\r\n"
Loading http://www.espruino.com/json/ESPRUINOBOARD.json
Searching for json/ESPRUINOBOARD.json
json/ESPRUINOBOARD.json found in offline archive
Board JSON loaded
Firmware >1.43 supports faster writes over USB
ForceThrottle option is set - set Slow Write = true
FIRMWARE: Current 1v95, Available 1v95
Device found (connectionId=1)
[success] Connected to port /dev/ttyACM0
>>> Connected to port /dev/ttyACM0
ERROR: [notify_error] Compiler not active as no process.env.EXPORTS/EXPTR available.<br/>Is your board supported and firmware up to date?
WARNING: [notify_warn] Errors while minifying - sending unminified code.
Found a prompt... great!
>>> Sending...
---> "\u0010reset();\n\u0010setTime(1518688740.932);\n\u0010var c = E.compiledC(`\n    // int sum(int, int)\n    int sum(int len, unsigned char *data){\n      int s = 0;\n      while (len--)\n        s += *(data++);\n      return s;\n    }\n    `);\n\u0010var str  = E.toString(\"\\1\\2\\3\\4\\5\\6\");\n\u0010print(c.sum(str.length, E.getAddressOf(str,true)));\n\n"
Splitting at "reset();\n", delay 250
ERROR: [notify_error] Input_0:11: ERROR - This style of octal literal is not supported in strict mode.
ERROR: [notify_error] var str  = E.toString("\1\2\3\4\5\6"); // create a flat string
ERROR: [notify_error] ^
>>> Sent
Disconnect callback...
WARNING: [notify_warn] Disconnected
>>> Disconnected
>>> Connecting...
ForceThrottle option is set - set Slow Write = true
[object Object]
Connected [object Object]
Found a prompt... great!
>>> Sending...
---> "\u0010console.log(\"<\",\"<<\",JSON.stringify(process.env),\">>\",\">\")\n"
>>> Sent
Got "< << {\"VERSION\":\"1v95\",\"BUILD_DATE\":\"Dec 15 2017\",\"BUILD_TIME\":\"17:07:34\",\"GIT_COMMIT\":\"7dbffcf5da09570bd95714b2386a12ab25ab1d50\",\"BOARD\":\"ESPRUINOBOARD\",\"CHIP\":\"STM32F103RCT6\",\"CHIP_FAMILY\":\"STM32F1\",\"FLASH\":262144,\"RAM\":49152,\"SERIAL\":\"34ffdb05-42573838-24631743\",\"CONSOLE\":\"USB\",\"EXPORTS\":{\"jsvLock\":131929,\"jsvLockAgainSafe\":131915,\"jsvUnLock\":131889,\"jsvSkipName\":19429,\"jsvMathsOp\":24927,\"jsvMathsOpSkipNames\":24977,\"jsvNewFromFloat\":132269,\"jsvNewFromInteger\":132305,\"jsvNewFromString\":133473,\"jsvNewFromBool\":132289,\"jsvGetFloat\":19713,\"jsvGetInteger\":17081,\"jsvGetBool\":20437,\"jspeiFindInScopes\":31009,\"jspReplaceWith\":31069,\"jspeFunctionCall\":35349,\"jspGetNamedVariable\":188129,\"jspGetNamedField\":189697,\"jspGetVarNamedField\":189293,\"jsvNewWithFlags\":132085}} >> >\r\n"
Loading http://www.espruino.com/json/ESPRUINOBOARD.json
Searching for json/ESPRUINOBOARD.json
json/ESPRUINOBOARD.json found in offline archive
Board JSON loaded
Firmware >1.43 supports faster writes over USB
ForceThrottle option is set - set Slow Write = true
FIRMWARE: Current 1v95, Available 1v95
Device found (connectionId=2)
[success] Connected to port /dev/ttyACM0
>>> Connected to port /dev/ttyACM0
WARNING: [notify_warn] Errors while minifying - sending unminified code.
Found a prompt... great!
>>> Sending...
---> "\u0010reset();\n\u0010setTime(1518688966.433);\n\u0010var c = (function(){\u001b\n  var bin=atob(\"ChgAIJFCA9AR+AE7GET553BHAAA=\");\u001b\n  return {\u001b\n    sum:E.nativeCall(1, \"int(int, int)\", bin),\u001b\n  };\u001b\n})();\n\u0010var str  = E.toString(\"\\1\\2\\3\\4\\5\\6\");\n\u0010print(c.sum(str.length, E.getAddressOf(str,true)));\n\n"
Splitting at "reset();\n", delay 250
ERROR: [notify_error] Input_0:8: ERROR - This style of octal literal is not supported in strict mode.
ERROR: [notify_error] var str  = E.toString("\1\2\3\4\5\6"); // create a flat string
ERROR: [notify_error] ^
>>> Sent

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Posted at 2018-02-15 by asez73

You are very reactive and some of our posts got unsynced.
Thank you for that.
Anyway, everythings is shown above.
I don't think it is related to the webide itself, or at least not the last version.
It seems, just an opinion, to be related to serial buffering as I mentionned some cases, which did not appeared here, showed some strings not displayed on the left pane of the webide until I pressed the Enter key.

---

Posted at 2018-02-15 by asez73

Ok, I reflashed with the new cable and it seems to work now...
Sorry for the disturbance!

So I closed the discussion and can't add more posts....
Things are tricking:
Turning off minimification and offline mode imposed me to disconnect and reconnect the board in order to have success. Otherwise, the errors went back as described above.

Then, setting back offline mode does impose the same disconnection/reconnection once only and the problem seems not to reappear: Non errors nor warnings and correct result of 21.

Then turning minimification back to Espruima offline on, did imposed also disconecting/reconnecting once only the board.

Then turning minimification back to Closure online (whitespace only) on, did imposed also disconecting/reconnecting once only the board.

So it could be a problem of stored configuration in the web ide finaly???

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Posted at 2018-02-15 by @gfwilliams

Thanks - it's very strange though - from the log it seems like the IDE has parsed the JSON response just fine but for some reason hasn't picked up the EXPORTS variable.

Could you try turning off 'minifcation' as well as 'offline mode'. Both of those appear to be turned on, and I guess could be causing problems somehow?

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Posted at 2018-02-19 by @gfwilliams

Just managed to reproduce this - if you open the settings window and close it, it wipes out the data received from the board. So if you just connect and upload it'll be fine - it's just an issue if you connect, enter settings, and then upload.

I'll fix it for the next IDE release.

---

Posted at 2018-02-19 by asez73

Good, so, i'll disconnect / reconnect after any change in the settings.
Thanks again for your follow up.