Change Log.txt

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= low.js for ESP32 Change Log                                                  =
= Now part of the lowjs repo to show progress in the whole project             =
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Version 20191125 / Version 1.3.2

This update is only important if you write C/C++ native modules.

- Small update to low native API functions low_call_thread and low_set_timeout
- Added the low.js native API documentation at
  https://www.neonious.com/lowjs/documentation/lowjs-for-esp32-api.html


Version 20191124 / Version 1.3.1 / only for ESP32

- Fixed deadlock when changing DNS servers
- Fixed UART.flush


Version 20191117 / Version 1.3.0

- Many optimizations, some bug fixes, also:
- low.js now includes the same root certificates as Node.JS does, no need to
  load them explicity anymore
- Support for native modules in low.js Pro (IDE + OTA version)!
  See https://www.github.com/neonious/low_native_api .
  Extensive documentation will arrive in December 2019
- Module pg works
- Support for process.on('uncaughtException', ...)
- Settings object can now only be used for low.js parameters
- PC version: Support for --transpile and --transpile-output for debugging
- PC version: Support for command line arguments


Version 20191017

- Modules mysql and node-fetch work
- Many other modules now work which previously did not work. Please uninstall
  and install them again before testing
- Added internal timers module as needed by some modules (a simple wrapper to
  the global timers functions)
- Fixed some quirks with http/https, making it more stable


Version 20190923

Fixed problem introduced in 20190920 by upgrading to a newer TypeScript
version. Update from 20190920 to newer version through IDE did not always work.

In case you have this problem, please run the following script from the IDE
(run file) to update instead of pressing the Update button:

require('lowsys').updateNow();


Version 20190921

Fixed deadlock introduced by 20190920


Version 20190920

- You can now get and set low.js settings from the user program via
 lowsync.settings / lowsync.getSettings.

- Also fixed a problem where the IP of the device is 192.168.4.1 when in access
  point mode, no matter what IP was set in the settings.


Version 20190908

Upgrade only for plain ESP32-WROVER boards, not for neonious one:

low.js for ESP32 supports ESP32-WROVER's with more than 4 MB of Flash (a bug
prevented this) neonious IDE + debugger and Over-The-Air updating for low.js is
now supported on any ESP32-WROVER board with 16 MB of Flash or more, not only on
the neonious one! Required paid license.


Version 20190814

Native, fast OPC-UA Client module to interface industry bus controllers added!
See the documentation for more information For convenience, the ws module (for
WebSockets) is now preloaded after factory reset, can be uninstalled Only on
neonious one: The example program preloaded now shows a chat box to showcase
WebSockets. Reset to factory after updating to load it Changes in lowsys.status
are now notified by emitting a lowsysStatusChange event on the process module


Version 20190728

Support for up to 128 instead of only 16 sockets Fix for RangeError when using
fall/rise GPIO events Only on neonious one: Fix for a bug which froze LPC822
co-processor and thus made pins unusable Only on neonious one: Fixed swapped ADC
pins 15 and 17


Version 20190703

Support for the mqtt module (add
require('mqtt-packet').writeToStream.cacheNumbers = false; to the top of your
main program file so the module does not use all RAM) Better error messages if a
module is too large for the microcontroller (if it happens, consider switching
from plain ESP32-WROVER to neonious one) Small fix for setImmediate and
process.nextTick


Version 20190619

https.request support! TLS options other than one certificate are not supported
yet, but the basic feature is working! http/https upgrade for clients
implemented => WebSocket connections to outside world possible lowsync 1.0.22:
install/uninstall commands allow you to install npm packages on plain
ESP32-WROVER. Better option than syncing node_modules directory because modules
installed via install/uninstall load much faster


Version 20190619

https.request support! TLS options other than one certificate are not supported
yet, but the basic feature is working! http/https upgrade for clients
implemented => WebSocket connections to outside world possible lowsync 1.0.22:
install/uninstall commands allow you to install npm packages on plain
ESP32-WROVER. Better option than syncing node_modules directory because modules
installed via install/uninstall load much faster


Version 20190618

Module axios works Unhandled promise reject now shows correct stack frame, by
rethrowing original error with message prefixed by "unhandled promise" instead
of throwing new error Stability fixes (for example stack compression when
compiling JavaScript files)


Version 20190613

Added os.freemem(), os.totalmem(), os.uptime() Fixed a bug which resulted into a
corrupt file system after a high write load Fixed memory leak with fs.*Sync
functions


Version 20190603

Revert of optimization in 20190602 which results in Out Of Memory after a few
days (NOT reverting deadlock fix however) Also done, not in low.js itself:

lowsync 1.0.21 in npm: Does not upload files/folders with . prefix anymore
(.git, .vscode, etc.) lowsync 1.0.21 in npm: Fix with exclude configuration
setting Updated all lowsync installation instructions so it works perfectly
under Linux and macOS


Version 20190602

Support for process.versions, lowsys.updateVersion and lowsys.updateNow() Fixed
deadlock in low memory handling Fixed bug in SPIFFS file system by updating
library


Version 2019-05-21

Fix: CPU load now accurate. Simple setInterval loops now show 1% CPU usage
instead of 50% CPU usage or more. Fix: Even code in tight loops can now be
paused/stopped Fix: Debugger connection more stable


Version 2019-05-16

Fix: data thread has higher priority than code thread, makes console.log output
even at 100 % CPU usage Optimized SPI flash on neonious one: Less blocking and
now utilized read-on-write


Version 2019-05-14

Fix: gpio pin.getValue works together with rise and fall events Fix on neonious
one: only gpio.OUTPUT_OPENDRAIN and not gpio.OUTPUT now allowed on correct pins
4 and 5, not 3 and 4 Fix on neonious one: it now takes at least 1 sec of
pressing the user button to disable auto run, also after a factory reset, the
user program runs even though the user button was pressed


Version 2019-05-06 / v2

Fixed typo in CAN module: trasmit() => transmit()


Version 2019-05-06

Added fully featured CAN interface module (see can module documentation and
example can_self_test.js) Added process.exit, lowsys.restart, process events
exit and beforeExit, lowsys.gc Small fixes to low.js (see lowjs commits for more
information)


Version 2019-04-18

Added important features for using the neonious one in production settings:

A watchdog with software (JavaScript engine) and hardware (ESP32) mode A flag to
restart the user program on a fatal exception A flag to allow the IDE to
automatically save the edited files when starting the user program For all
three, see the low.js Settings documentation for more information.

Also, if your program blocks the whole microcontroller and you cannot even
access the IDE, please report the problem as an GitHub issue, as this should not
happen, no matter what code you write.

In case it does happen, however, you can now disable auto start of your program
by keeping the User button pressed when tapping the Reset button and then
directly releasing the User button (otherwise you will reset the network
settings if you wait 5 seconds, see documentation). This will allow you to enter
the neonious one IDE even if your program blocks the whole microcontroller.


Version 2019-04-10

Fixes in GPIO handling so timing is better and DHT11 can be supported (see
dhtll.js)


Version 2019-03-30

lowsync monitor now only shows output of current program run, use lowsync
monitor --global=true to see the whole past better handling of low socket
szenarios fix for fs.*Sync methods added Array.prototype.fill and
Buffer.from(..., 'hex'/'base64')


Version 2019-03-13

Added lowsys.setSystemTime, used in NMEA GPS driver (nmea_gps.js) Fixed crash
which happens when too many HTTP sockets are opened


Version 2019-03-04

Complete workaround to ESP-IDF issue issue #2892, low.js now stable UDP/dgram
support High precision timestamps added to GPIO rise and fall events to be able
to interface modules like the HC-SR04 distance sensor (see example here)


Version 2019-02-06

I2C on LPC822 pins npm package manager Support for upgrade of 4 MB file system
to 12 MB file system (see documentation) Bug fixes


Version 2019-01-30 / bugfix release

Bugfix: Rewritten stack compression for stability Bugfix: fs.access working


Version 2019-01-28 / bugfix release

Bugfix in low.js: Crash happened if too much data was written via HTTP Bugfix in
low.js: UART module now working Bugfix: Disabling Ethernet could cause a crash
Bugfix: Too much stack usage could cause a crash Bugfix: No longer long wait
time at boot if many files exist


Version 2019-01-10

Some low.js fixes (see GitHub commits for details) First version of simple JIT
compiler (will be explained in blog soon) Fixed a bug which made one pin
unresponsive


Version 2018-12-27

Some low.js fixes (see GitHub commits for details) Can be accessed via
http://neonious.one/ after factory reset (simple DNS server added), no
certificate warnings anymore Faster, now using dlmalloc for internal RAM, too


Version 2018-12-18

Support for

fs.constants fs.access fs.rmdir fs.mkdir fs.readdir fs.appendFile and all sync
versions of these methods.


Version 2018-12-08

Fixed promises and async/await


Version 2018-12-01

Support for I2C on ESP32 pins No stack limit at all with any recursive native
calls, now only limited by heap Working Array.prototype.values /
Array.prototype[Symbol.iterator] Support for mounting SD cards into filesystem
Support for accessing memory above 4 MB (for example when using ESP-WROVER-B
with 8 MB PSRAM). Due to ESP32's limitation of accessing only 4 MB directly,
this is realized with require('lowsys').himemRead/himemWrite. neonious IDE
session does not expire while being used The documentation will be updated in
the next week.


Version 2018-11-26

Better support for ES6+ constructs


Version 2018-11-22

Support for UART and SPI on ESP32 pins (high speed!) Stack no longer limits
require(...) chains Fixed crash when stack limit is hit


Version 2018-11-19

Small, but important bug fixes.


Version 2018-11-15

Garbage collector now already runs early enough to not hit memory full when it
actually is not Memory full situation is handled well, no crash of device
anymore Improved flacky Over-The-Air updater


Version 2018-11-13

Fixed the Ethernet port: now fast and stable Optimizations for speed, much
faster network in general Small update for the ESP32 peripherials API, check the
documentation for changes Bug fixes


Version 1.2.0 / November 2nd, 2018

Support for HTTP/HTTS server 'upgrade' event => WebSockets module works
crypto.createHash / crypto.createHMac, resulting object supports update and
digest Error.prepareStackTrace / Error.captureStackTrace fs.unlink / fs.rename /
fs.unlinkSync / fs.renameSync Buffer.toString('hex') / Buffer.toString('base64')
Faster network thanks to newer ESP-IDF version Many bugfixes


Version 1.1.2 / September 26th, 2018

implemented fs.createReadStream / fs.createWriteStream implemented
process.hrtime fixed crash which could happen on socket error, reproducable by
just reloading the website served by the program again and again really fast
worked around the bug that GPIO / LEDs became unresponsive after a few reboots
until power is cut off. This work around makes pin 6 unusable right now. It will
be usable again soon after the issue https://community.nxp.com/thread/475108 is
resolved. This is now a top priority issue for us which we will hopefully fix
soon.


Version 1.1.0 / September 10th, 2018

complete rewrite based on the newly created low.js. Numerous additional
features.


Version 1.0.0 / June 2nd, 2018

first released version