Commit Graph

1170 Commits

Author SHA1 Message Date
Nathaniel Wesley Filardo 4e689e9839
Finish removing sqlite3 (#3162)
This file seems to have been missed by 35a266e2c2
2020-06-13 13:22:25 +02:00
Firenox89 0555a4c689 fix a memory leak in ws2812_buffer_shift by freeing the same amount of bytes we allocated before 2020-06-12 18:23:36 +01:00
Nathaniel Wesley Filardo 61b540757a Remove deprecated rc module
It has long been superseded by the rfswitch module
2020-06-10 02:15:08 +01:00
Nathaniel Wesley Filardo 35a266e2c2 Remove sqlite3 module
It's not clear that this ever worked, AFAICT nobody uses it, and it's an
old version of the sqlite3 engine at this point.  Absent a maintainer,
let's just get rid of it.
2020-06-10 02:14:29 +01:00
Gregor Hartmann 7c53cc7611 Deprecate RC module (#3137) 2020-06-09 22:26:52 +02:00
Terry Ellison 544ee81210 Updated lua.c to fix #3118 telnet issue 2020-06-09 22:26:52 +02:00
Nathaniel Wesley Filardo a04b085d71 ws2812_effects deprecation warning 2020-06-09 22:26:52 +02:00
Terry Ellison 98e428f12e Update wifi..c to fix #3106 2020-06-09 22:26:52 +02:00
Javier Peletier 75f1c64cbc fix compilation error when disabling startup banner (#3103) 2020-06-09 22:26:52 +02:00
Gregor Hartmann 93c82f1f9e Fix binary and chunked HTTP downloads (#2985)
Original sources by @anod221
2020-06-09 22:26:52 +02:00
galjonsfigur 7140894f2f Update hook after updating GPIO bits (#3091)
Fixes #3089
2020-06-09 22:26:52 +02:00
Lukáš Voborský 7a77d76438 net_info module - ping function (#2854)
* Net_info module exposing ping function initial commit
* Ping as a part of net module
* Sent callback implemented
* Add NET_PING_ENABLE macro

Authored-by: vsky <blue205@centrum.cz> with support from TerryE
2020-06-09 22:26:52 +02:00
ecrips a0864c4382 u8g2: Fix name of updateDisplay export (#3093)
Correct typo in Lua export from updateDispla() to updateDisplay()
2020-06-09 22:26:52 +02:00
Gregor cad576a23b fix build 2020-06-09 22:26:52 +02:00
Terry Ellison bbeb09b695 Squashed updates do get Lua51 and Lua53 working (#3075)
-  Lots of minor but nasty bugfixes to get all tests to run clean
-  core lua and test suite fixes to allow luac -F to run cleanly against test suite
-  next tranch to get LFS working
-  luac.cross -a options plus fixes from feedback
-  UART fixes and lua.c merge
-  commit of wip prior to rebaselining against current dev
-  more tweaks
2020-06-09 22:26:52 +02:00
firenox89 fd26dea949 fix #2565 by inverting the grb2hsv argcheck condition (#3076) 2020-06-09 22:26:52 +02:00
Gregor Hartmann c50b4789c4 HTML for Apple devices to mitigate POST fragmentation (#3069) 2020-06-09 22:26:52 +02:00
Andreas Müller 95fc8b14b3 Correct integer types in BMP085 driver (#3070)
* BMP085 pressure sensor: fix temperature value data type

the data type for t (U_T) should be long according to the BMP085
datasheet (rev. 1.2, section 3.5). values over 32767 can indeed occur,
and in my case lead to a wrong value for the temperature (and
consequently also pressure).

note: this problem only occurs above a certain temperature (exact
value depends on the calibration, but I assume somewhere around 26°C).

* BMP085 pressure sensor: adapt data types and calculation

this adapts the data types and calculation to be consistent with the
datasheet (rev. 1.2, section 3.5). while I did not notice any issues,
using the wrong data types could trigger edge cases.
2020-06-09 22:26:52 +02:00
Nathaniel Wesley Filardo c8c90fe4e1 app/modules: prune some unnecessary metamethods 2020-06-09 22:26:52 +02:00
Nathaniel Wesley Filardo d480003a40 tls: fix new verification API
Because the old API was inactive, we were setting
MBEDTLS_SSL_VERIFY_NONE even after we'd parsed the certificate.

tls tests now include a deliberate certificate mismatch; this was
discovered by moving the mqtt tests over to the new API.
2020-06-09 22:26:52 +02:00
Nathaniel Wesley Filardo efa786da4e net.dns: don't calloc a single int
Removes yet another unchecked allocation point in our C libraries.

While here, fix potential reference leaks on error paths

Also while here, remove some stale documentation.  There can be as many
DNS requests in flight as LwIP has room for in its table
(DNS_TABLE_SIZE, which defaults to 4).
2020-06-09 22:26:52 +02:00
Nathaniel Wesley Filardo fd68000c12 net: drop LUA_GCSTOP/GCRESTART dance 2020-06-09 22:26:52 +02:00
Nathaniel Wesley Filardo bf478e0cc4 mqtt: drop LUA_GCSTOP/GCRESTART dance 2020-06-09 22:26:52 +02:00
Nathaniel Wesley Filardo a7f8564424 file: raise error on .on() with non-function/nil
Seems more polite than quietly accepting other types as nil.
2020-06-09 22:26:52 +02:00
Nathaniel Wesley Filardo e1a81aa114 net: annotate deliberate case fallthrough 2020-06-09 22:26:52 +02:00
Nathaniel Wesley Filardo 9f8c2aea6f mqtt: remove dead store 2020-06-09 22:26:52 +02:00
Nathaniel Wesley Filardo af426d0315 Networking rampage and accumulated fixes (#3060)
* espconn: remove unused espconn code, take 1

This is the easiest part of https://github.com/nodemcu/nodemcu-firmware/issues/3004 .
It removes a bunch of functions that were never called in our tree.

* espconn: De-orbit espconn_gethostbyname

Further work on https://github.com/nodemcu/nodemcu-firmware/issues/3004

While here, remove `mqtt`'s charming DNS-retry logic (which is neither
shared with nor duplicated in other modules) and update its :connect()
return value behavior and documentation.

* espconn: remove scary global pktinfo

A write-only global!  How about that.

* net: remove deprecated methods

All the TLS stuff moved over there a long time ago, and
net_createUDPSocket should just do what it says on the tin.

* espconn_secure: remove ESPCONN_SERVER support

We can barely function as a TLS client; being a TLS server seems like a
real stretch.  This code was never called from Lua anyway.

* espconn_secure: more code removal

* espconn_secure: simplify ssl options structure

There is nothing "ssl_packet" about this structure.  Get rid of the
terrifying "pbuffer" pointer.

Squash two structure types together and eliminate an unused field.

* espconn_secure: refactor mbedtls_msg_info_load

Split out espconn_mbedtls_parse, which we can use as part of our effort
towards addressing https://github.com/nodemcu/nodemcu-firmware/issues/3032

* espconn_secure: introduce TLS cert/key callbacks

The new feature part of https://github.com/nodemcu/nodemcu-firmware/issues/3032
Subsequent work will remove the old mechanism.

* tls: add deprecation warnings

* luacheck: net.ifinfo is a thing now

* tls: remove use of espconn->reverse

* mqtt: stop using espconn->reverse

Instead, just place the espconn structure itself at the top of the user
data.  This enlarges the structure somewhat but removes one more layer
of dynamic heap usage and NULL checks.

While here, simplify the code a bit.

* mqtt: remove redundant pointer to connect_info

Everywhere we have the mqtt_state_t we also have the lmqtt_userdata.

* mqtt: doc fixes

* mqtt: note bug

* tls: allow :on(...,nil) to unregister a callback
2020-06-09 22:26:52 +02:00
Nathaniel Wesley Filardo 30f706fb03 WIP: MQTT fixes (#2986)
* mqtt: expose "connfail" callback via :on()

This makes it just like all the other callbacks in the module and is a
revision of behavior called out in
https://github.com/nodemcu/nodemcu-firmware/pull/2967

* mqtt: clarify when puback callback fires

* mqtt: Don't reference stack buffers from the heap

The confusingly-named "mqtt_connection_t" object is just a triple of
  - a serialized mqtt message pointer and length
  - a buffer pointer (to which the above can be written)
  - a message identifier

The last of these must be passed around the mqtt state machine, but the
first two are very local and the buffer is always sourced from the C
stack.  Unfortunately, because the entire structure is persisted in the
heap, some callers assume that they can always use the structure without
reinitialization (see mqtt_socket_close), which will trash the C stack.

Sever the pairing between message id and local state, punt the local
state entirely out of the heap, and rename things to be less confusing.
2020-06-09 22:26:52 +02:00
Nathaniel Wesley Filardo 446c058fa6 net: rename net.if.info to net.ifinfo (#3033)
Reserved words are always reserved in Lua, so let's not have people
typing net["if"]...
2020-06-09 22:26:52 +02:00
galjonsfigur 1cacd9334a Fix timing of softuart module RX (#3029) 2020-06-09 22:26:52 +02:00
sergio fd3f0ddad4 Add flag to disable start-up banner (#3026) 2020-06-09 22:26:52 +02:00
Gregor Hartmann 115d0f88b9 Document tls.cert.auth (#3010) 2020-06-09 22:26:52 +02:00
M.K 3aba085f82 Clarify LFS build info is its size (#3022) 2020-06-09 22:26:52 +02:00
Nikolay Fiykov 2ae9af58fc Expose CPU CCOUNT register as tmr function (#2906) 2020-06-09 22:26:52 +02:00
galjonsfigur 50d88f7731 Fix compile warning and set correct order in module LROT (#2996) 2020-06-09 22:26:52 +02:00
M.K 27e127e7ea Minor typo and wording fixes (#2991) 2020-06-09 22:26:52 +02:00
Lukáš Voborský 36df8d009f Add DCC decoder module (#2905) 2020-06-09 22:26:06 +02:00
galjonsfigur db1e4454de Initial version of software UART C module (#2673) 2020-06-09 22:26:06 +02:00
Nathaniel Wesley Filardo 863dfb59ed SSL rampage (#2938)
* Remove stale putative MD2 support

This hasn't worked in a while, presumably since one of our upstream
merges.  Don't bother making it work, since MD2 is generally considered
insecure.

* Land mbedtls 2.16.3-77-gf02988e57

* TLS: remove some dead code from espconn_mbedtls

There was some... frankly kind of scary buffer and data shuffling if
ESP8266_PLATFORM was defined.  Since we don't, in fact, define that
preprocessor symbol, just drop the code lest anyone (possibly future-me)
be scared.

* TLS: espconn_mbedtls: run through astyle

No functional changes

* TLS: espconn_mbedtls: put the file_params on the stack

There's no need to malloc a structure that's used only locally.

* TLS: Further minor tidying of mbedtls glue

What an absolute shitshow this is.  mbedtls should absolutely not
be mentioned inside sys/socket.h and app/mbedtls/app/lwIPSocket.c is not
so much glue as it as a complete copy of a random subset of lwIP; it
should go, but we aren't there yet.

Get rid of the mysterious "mbedlts_record" struct, which housed merely a
length of bytes sent solely for gating the "record sent" callback.

Remove spurious __attribute__((weak)) from symbols not otherwise
defined and rename them to emphasize that they are not actually part of
mbedtls proper.

* TLS: Rampage esp mbedtls glue and delete unused code

This at least makes the shitshow smaller

* TLS: lwip: fix some memp definitions

I presume these also need the new arguments

* TLS: Remove more non-NodeMCU code from our mbedtls

* TLS: drop support for 1.1

Depending on who you ask it's either EOL already or EOL soon, so
we may as well get rid of it now.
2020-06-09 22:26:06 +02:00
Nathaniel Wesley Filardo 948325a996 New `net.if.info` call to show LwIP information (#2862)
* Remove app/include/netif/wlan_lwip_if.h

This file appears to be unused in our tree.

* New `net.if.info` call to show LwIP information

This is a generalization of `wifi.sta`'s and `wifi.ap`'s `getip` and
`getmac` calls.  I don't propose to deprecate those, but perhaps we
should, in the documentation, point users at this function instead.

The direct motivation is to permit continued use of DHCP-provided NTP
servers in a future where
https://github.com/nodemcu/nodemcu-firmware/pull/2819 has landed, now
that https://github.com/nodemcu/nodemcu-firmware/pull/2709 is in the
tree.  But rather than exposing just that information, a more general
interface seems useful.
2020-06-09 22:26:06 +02:00
Marcel Stör 1b4b442142 Streaming support for hx711 (#2915) 2020-06-09 22:26:06 +02:00
Gregor Hartmann d4b5b0cbaf Fixes for `ws2812` and `ws2812_effects` (#2953)
* clean effects library
* Fix several issues in ws2812 and effects
* Implement working way of calling shift from callback
2020-06-09 22:26:06 +02:00
Lukáš Voborský e7be7644c0 Update sensor driver for BME680 to 3.5.9 (#2969) 2020-06-09 22:26:06 +02:00
Matsievskiy S.V 1759ebb360 fix lfs upload issue 2020-06-09 22:26:06 +02:00
Nathaniel Wesley Filardo 282ebd100d Deprecate crypto.to{Hex,Base64} (#2929)
The internal implementation already preferentially forwards to the
encoder module, so we should just remove these functions as they confuse
people into thinking that we don't have their inverses (see the feature
request https://github.com/nodemcu/nodemcu-firmware/issues/2907).

Update the docs to refer to the encoder version and add deprecation
warnings to the runtime implementations.
2020-06-09 22:26:06 +02:00
Marcel Stör da53d1938f Fix invalid smartconfig include
Fixes #2928, #2923
2020-06-09 22:26:06 +02:00
Marcel Stör 08ea0c8d27 Remove superfluous module def
Fixes #2920
2020-06-09 22:26:06 +02:00
Marcel Stör 16b2cc5107 Revert "Add streaming support for hx711 device (#2793)" (#2914)
This reverts commit 32ad759409.
2020-06-09 22:26:06 +02:00
Philip Gladstone 9809a607fd Add streaming support for hx711 device (#2793) 2020-06-09 22:26:06 +02:00
Terry Ellison 08426e48f1 Rebased against current dev, tweaks for clean compile 2020-06-09 22:26:06 +02:00
Terry Ellison 6d81dd6c0a Rebased against current dev 2020-06-09 22:26:06 +02:00
Terry Ellison ce2e50c651 Updates following JM review 2020-06-09 22:26:06 +02:00
Terry Ellison e7c29fe38e Lua 5.1 to 5.3 realignement phase 1 2020-06-09 22:26:06 +02:00
Gregor Hartmann 739b675b72 add build_date to build info (#2888) 2019-08-15 12:33:22 +02:00
Nathaniel Wesley Filardo 15afa7fd2e
Merge pull request #2830 from HHHartmann/Extend-node.info
Extend node.info
2019-08-04 20:52:41 +01:00
Gregor Hartmann 0659e5529e Fix enduser_setup default POST request (#2852) 2019-08-01 21:31:18 +02:00
Nathaniel Wesley Filardo 7d387dd4d6 Simplify and tidy SNTP (#2700)
* list_ref can become LUA_REFNIL, because that's what rawgeti returns
  for LUA_NOREF.  Defensively guard for this, rather than falling into
  the sntp_dolookups loop with nil on the stack.

* set_repeat_mode should not call itself, but should rather always do
  what it's going to do and then optionally do the rest if directed.

* sntp_sync should not try to special case the single string argument:
  we should be queueing that name for DNS resolution, too.  Towards that
  end, if we are given a single string, build a table and make that the
  list_ref and call off to sntp_dolookups, just like we otherwise do.

FIXES: #2699
2019-07-27 14:20:26 +02:00
Gregor Hartmann 73e6651fe8 Add support for DCHP NTP server (option 42) (#2709)
* Add DHCP option 42 / NTP

* Update dhcp.c

* resolve merge conflict

* add lineend at end of file

* fix merge conflict resolution error
2019-07-27 08:21:35 +02:00
Gregor 06666a7854 using lua_setfield now 2019-07-27 05:36:06 +00:00
Gregor 5fafa6378c change to better UI and get information directly from .h file 2019-07-27 05:36:06 +00:00
Gregor 063988f12a Change DTS to string since it is too big as number 2019-07-27 05:36:05 +00:00
Gregor 6f1e366946 Revert "update file permission"
This reverts commit af9b123bc1c0603859caf9fcd6fcfdeeeb08dbce.
2019-07-27 05:36:05 +00:00
Gregor 2d80042f91 update file permission 2019-07-27 05:36:05 +00:00
Gregor ad90e8dd51 tweal the startup message a bit 2019-07-27 05:36:04 +00:00
Gregor e0273185db include buildinfo generation in makefile 2019-07-27 05:36:04 +00:00
Gregor 4b279939b6 Add release info 2019-07-27 05:36:02 +00:00
Gregor 21c35a1a97 Create buildinfo.h and return new Values in node.info 2019-07-27 05:36:02 +00:00
Terry Ellison c7ff86ff27
remove luacheck run for Travs and minor tweaks following #2838 (#2845) 2019-07-23 20:29:44 +03:00
Terry Ellison 98c2c0520d
Dev make cleanup (#2842) 2019-07-23 18:47:18 +03:00
Johny Mattsson f7a545b951
Evict c_types.h, tidy up a other c_prefixes. (#2841) 2019-07-23 14:22:38 +10:00
Johny Mattsson 526d21dab4 Major cleanup - c_whatever is finally history. (#2838)
The PR removed the bulk of non-newlib headers from the NodeMCU source base.  
app/libc has now been cut down to the bare minimum overrides to shadow the 
corresponding functions in the SDK's libc. The old c_xyz.h headerfiles have been 
nuked in favour of the standard <xyz.h> headers, with a few exceptions over in 
sdk-overrides. Again, shipping a libc.a without headers is a terrible thing to do. We're 
still living on a prayer that libc was configured the same was as a default-configured
xtensa gcc toolchain assumes it is. That part I cannot do anything about, unfortunately, 
but it's no worse than it has been before.

This enables our source files to compile successfully using the standard header files, 
and use the typical malloc()/calloc()/realloc()/free(), the strwhatever()s and 
memwhatever()s. These end up, through macro and linker magic, mapped to the 
appropriate SDK or ROM functions.
2019-07-22 00:58:21 +03:00
Nathaniel Wesley Filardo 9f8b74debd MQTT tweaks (#2822)
* mqtt:connect() secure parameter should be boolean

Continue to honor the old 0/1 values, but make them undocumented and add
a deprecation warning to the code and docs.  Eventually, this should go
away.

* mqtt: rip out deprecated autoreconnect

* mqtt: expose all the callbacks via :on
2019-07-16 11:30:41 +02:00
Philip Gladstone 891799279d
Merge pull request #2832 from HHHartmann/ws2812-buffer-mix
fix rounding in ws2812:buffer:mix

Looks good to me.
2019-07-14 16:05:13 -04:00
Gregor bd0549ac4a fix rounding in ws2812:buffer:mix 2019-07-14 21:48:07 +02:00
Gregor Hartmann a0d0682232 Update enduser_setup.html.gz.def.h (#2827) 2019-07-11 12:57:49 +02:00
Marcel Stör 0398c3360b
Save the post data in a file on the filesystem (#2810)
* Use cross-browser JS for query params in EUS

* Update EUS doc to explain how to use parameters

* Remove ; in Lua code

* Rewrite the endpoint table

* Do not use properties as global Lua variables

* remove enduser_setup.html.gz

* rename folder 'eus' to 'enduser_setup'

* Change input type for password to "password"

* Replace outdated captive portal screen shot
2019-07-08 21:48:16 +02:00
Arnim Läuger bc7ffb3eb8 fix unref default file descriptor while still in use (#2818) 2019-07-05 07:55:54 +02:00
Marcel Stör 2d584a2a6a Fix ROTable call
Fixes #2806
2019-06-22 12:47:14 +02:00
Terry Ellison 5f147a7352
Baseline version of Pipe library (#2797) 2019-06-19 15:16:17 +03:00
galjonsfigur a9256aec8b Fix issue #2753 and fix documentation example (#2776) 2019-06-01 18:05:19 +02:00
Nikolay Fiykov 5f43a414e7 Add pwm2 module (#2747) 2019-05-25 22:08:13 +02:00
Terry Ellison 036bff5665
Use dynamic memory for cached DNS names (#2763)
Fixes #2511
2019-05-20 15:05:52 +01:00
Terry Ellison d6980ad802
SDK 3.0 tranche3 (#2761)
Force libpp.a into iRAM, and backout redundant IRAM_DATA_ATTR changes
2019-05-19 14:38:23 +01:00
Terry Ellison f1b5dfc34e
SDK-3.0 tranche updates (#2757)
includes some dRAM -> iRAM optimisations
2019-05-17 13:04:19 +01:00
Terry Ellison 1990f95740
Updated ROTables 1st tranch (#2742)
Updated ROTables
2019-05-08 14:08:20 +03:00
Terry Ellison e0f3dbed41
Fix 2749 + restore correct user_modules.h (#2750) 2019-05-07 18:49:16 +03:00
Terry Ellison bc61528db7
1st Tranch of SDK 3.0 follow up changes (#2732)
1st Tranche of SDK 3.0 follow up changes
2019-05-01 18:29:11 +01:00
devsaurus b7a99358cc u8g2: fix return value 2019-04-28 21:32:31 +02:00
Arnim Läuger 530c353ff8
Update u8g2 to v2.25.10 (#2735)
* Upgrade u8g2 and add updateDisplayArea bindings

* u8g2 2.25.10

* add displays for 2.24.3 and 2.25.10

* remove workaround for hal pointer and make use of u8x8's user_ptr

* fix doc

* add binding for `updateDisplay()`
2019-04-28 15:45:04 +02:00
Terry Ellison c3e24436f2
Lua string optimisation in file.c + get/put contents methods (#2717)
* Lua string optimisation in file.c + get/put contents methods

* Doc fix: move putcontents() into correct alphabetic order slot in list of static methods
2019-04-11 22:17:00 +01:00
ziggurat29 5a6992c26a added spiffsimg host tools project to msvc build configuration. (#2686) 2019-04-09 14:38:49 +01:00
Terry Ellison fc94439b74 crypto.c: Clarify comments on use of userdata for header + context + key opad blocks 2019-04-08 13:57:46 +01:00
Terry Ellison 528973548c fix EM:0 error, and other memory leaks, plus minor typos in doc 2019-04-05 18:23:13 +01:00
Terry Ellison 9a47107920
SDK 3.0 release (#2692)
* Rebaseline firmware to non-OS SDK version 3.0
* Note that SDK version 3.0 introduces the concept of a Flash Partition Table(PT).  This is located at Flash offset 0x10000 in our firmware build.
* The firmware is now PT aware with both LFS and SPIFFS taking their partition size and location from the PT
* A new tool `tools/nodemcu-partition.py` is now used to initialise these data and can also download LFS and SPIFFS images to these partitions.
2019-04-05 16:01:45 +01:00
Nathaniel Wesley Filardo b6cd2c3edd Remove moribund C ds18b20 module (#2492)
Just use Lua speaking OW (via C) instead.
2019-04-05 15:55:07 +01:00
Nathaniel Wesley Filardo f0565ea576 mbedtls bump to 2.7.9 (#2655)
No major fixes, but was looking anyway.

Specifically, to
https://github.com/ARMmbed/mbedtls.git 079e813949251be1e7a9d395abd20b2c63422787
2019-04-05 06:57:02 +02:00
Natalia ab61e9c03a I2C sw driver with support of multiple buses, Slow, Fast, FastPlus, and user-defined speed selection (#2465)
* I2C driver speed-up, i2c.SLOW, i2c.FAST and user-defined speed selection

* - Multiple buses (up to 10) with different speeds on each bus
- Standard(Slow, 100kHz), Fast(400kHz) and FastPlus(1MHz) modes or an 
arbitrary clock speed
- Sharing SDA line over multiple I²C buses to save available pins
- GPIO16 pin can be used as SCL pin, but it does not support clock 
stretching and selected bus will be limited to FAST speed.

* Dynamic memory allocation, error checks, simplification, timing tweaks.

* Separated the code of old driver for better compatibility and simplicity

* Change of driver interface

* Add bus status check in setup(); simplify getDC(); remove unnesessary lines in ACK read/write

* Fix for moved doc file and trailing whitespaces
2019-04-05 06:56:11 +02:00
Terry Ellison 3f5ae99e42
Fix unaligned load/store exception in luaR_findentry (#2702) 2019-03-24 22:47:29 +00:00
Philip Gladstone a90de79c26 Minor fix to allow building of luac.cross.int (#2697)
* Minor fix to allow building of luac.cross.int
* Reapply some changes lost due to merge damage
2019-03-21 09:56:30 +01:00
Arnim Läuger ebd147b34f DHT11 read sometimes failed with checksum error (#2679)
* DHT11 read sometimes failed with checksum error.

The code assumed DHT11 devices only ever return zero in the temperature and humidity decimal fraction bytes. The datasheet doesn't guarantee this is the case, and by observation I have noticed that indeed the DHT11 may sometimes return another number, usually close to zero. This means that the code would fail with a checksum error, as the fraction bytes were not included when the checksum was calculated. These bytes are now taken into account and also returned as part of the measurement.

This also means that the related dht.read() function is non-functional. If you have a DHT11 device that returns a non-zero decimal part, dht.read() will interpret it as a DHT22 result and return the wrong measurement. For this reason dht.read() should be retired. This patch does not address this issue.
2019-02-23 22:03:21 +01:00