IR module (Infrared) #3094
IR module (Infrared) #3094
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Lua 5.1 to 5.3 realignement phase 1
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 nodemcu#2907). Update the docs to refer to the encoder version and add deprecation warnings to the runtime implementations.
fix lfs upload issue
* clean effects library * Fix several issues in ws2812 and effects * Implement working way of calling shift from callback
* 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 nodemcu#2819 has landed, now that nodemcu#2709 is in the tree. But rather than exposing just that information, a more general interface seems useful.
* 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.
* Add missing globals from luacheck config * Fix luacheck warnings in all lua files * Re-enable luacheck in Travis * Speed up Travis by using preinstalled LuaRocks * Fix more luacheck warnings in httpserver lua module * Fix DCC module and add appropriate definitions to luacheck config. * Change inline comments from ignoring block to only ignore specific line * Add Luacheck for Windows and enable it for both Windows and Linux * Change luacheck exceptions and fix errors from 1st round of polishing * Add retry and timeout params to wget
Also clean-up a nasty `ow` module example.
Co-authored-by: Matsievskiy S.V <[email protected]>
* fix build * poor mans link which also works on docker under windows * Delete espconn.h * resurecting it as regular file * Add missing newline Co-authored-by: Marcel Stör <[email protected]>
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Can you please include a link to the relevant hardware? I.e. what do I
search for if I want to buy one of these?
…On Fri, May 8, 2020, 11:49 ecrips ***@***.***> wrote:
- This PR is for the dev branch rather than for master.
- This PR is compliant with the other contributing guidelines
<https://github.com/nodemcu/nodemcu-firmware/blob/dev/CONTRIBUTING.md>
as well (if not, please describe why).
- I have thoroughly tested my contribution.
- The code changes are reflected in the documentation at docs/*.
This adds a new module (with documentation) which can receive IR pulses
from a suitably connected sensor (such as a TSOP382xx). It also can decode
RC-5 codes.
------------------------------
You can view, comment on, or merge this pull request online at:
#3094
Commit Summary
- Add IR module
- Add documentation for IR module
File Changes
- *M* app/include/user_modules.h
<https://github.com/nodemcu/nodemcu-firmware/pull/3094/files#diff-7a71b1406a9beef39ed3e5f1ff6df026>
(1)
- *A* app/modules/ir.c
<https://github.com/nodemcu/nodemcu-firmware/pull/3094/files#diff-b19d907bc3d347c2db185ca51005e9a5>
(248)
- *A* docs/modules/ir.md
<https://github.com/nodemcu/nodemcu-firmware/pull/3094/files#diff-b5656f5f3121b63e2097878905547e8b>
(50)
- *M* mkdocs.yml
<https://github.com/nodemcu/nodemcu-firmware/pull/3094/files#diff-45ee620855dad847bea76b49932ad7db>
(1)
Patch Links:
- https://github.com/nodemcu/nodemcu-firmware/pull/3094.patch
- https://github.com/nodemcu/nodemcu-firmware/pull/3094.diff
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Sorry, searching for TSOP38238 is probably best. The code should work with any of the sensors in that family, but the TSOP38238 is the common one. I've also noticed that it might be worth spelling out that IR=InfraRed - that's mentioned in the documentation but might not be obvious otherwise - I've updated the pull request title. |
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I.e some like this ought to work:
https://www.aliexpress.com/item/32975610831.html?
I suspect that you ought to note that you need to pick an IR receiver
module that matches the PCM frequency of the transmitter....
You could also include a link to 'Standard chinese sources:
https://www.aliexpress.com/wholesale?SearchText=ir+receiver+module
<https://www.aliexpress.com/wholesale?SearchText=ir++receiver+module>'
…On Mon, May 11, 2020 at 5:46 AM ecrips ***@***.***> wrote:
Sorry, searching for TSOP38238 is probably best. The code should work with
any of the sensors in that family, but the TSOP38238 is the common one.
I've also noticed that it might be worth spelling out that IR=InfraRed -
that's mentioned in the documentation but might not be obvious otherwise -
I've updated the pull request title.
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The IR receiver will probably work, but note that the remote uses the NEC protocol which I haven't written a decoder for (RC-5 is more common here).
Yes, matching the frequency of the transmitter ensures a better signal. The TSOP38238 is available on the "standard Chinese sources": https://www.aliexpress.com/wholesale?SearchText=TSOP38238 and is what I've tested with. Other IR receiver modules are likely to work (almost all provide the same sort of signal), but I haven't tested so can't be sure. |
app/modules/ir.c
Outdated
| uint8_t rawbuf_write; | ||
| uint8_t pin, pin_num; | ||
| uint8_t setup; | ||
| } data; |
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I know I'm going to sound like a pest, but: is it possible to avoid globals like this and encapsulate everything needed within a Lua userdata? Could we even potentially allow for multiple IR rxers at once?
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Some global data is needed for the interrupt routine (so it can find the structure with the data in). But it would (in theory) be possible to move most of this into dynamically allocated data which would allow multiple IR receivers. I have to admit removing the need for the static rawbuf array would be a nice improvement (reduces RAM usage when not in use). I'll have a look at how difficult it would be to do.
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@ecrips Maybe it isn't the best suggestion, but you can have a look at softuart module where I was faced with similar problem. My solution is not ideal (as it cannot read more than one data frame simultaneously) but the method on implementing multiple receiving instances and selecting right one in ISR should be possible to apply in this code.
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Turns out I've been working on something similar, although for the esp32 so the code is conceptually similar but all the platform APIs are different. Do you think it's worth us trying to align the two, at least to the point of having the same Lua APIs in each? My attempt was more focussed on sending rather than receiving, so there's a chunk of code using the
Where I am it's the opposite, most things I have seem to use NEC or a variant thereof :) But there's sufficient variation I'd say it's not worth trying to include an NEC decoder in the C code. I ended up doing all the decoding Lua side to account for all the weirdnesses. fwiw I haven't found an IR device yet that the TSOP38238 couldn't decode, the biggest pain for me has been working out what the high-level protocol is. |
It would make sense trying to align the interface if possible. The main difference I can see is you are using negative/positive values to encode high/low pulses whereas I used the bottom bit. Your approach is probably easier to handle in Lua.
I initially tried doing all the IR decoding in Lua (i.e. used
Yes, the only issue I've had is sensitivity to noise. E.g. some pick up quite a bit of interference from CFL bulbs. |
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Hello are there any plans to support IR signal transmission? for example to control a device, like an air conditioner... :p ? thanks for any info |
I ended up splitting my ir code into a separate external module here: https://github.com/tomsci/nodemcu-irpwm to avoid the problem that one-size-never-fits-all - my implementation was probably too specific to my requirements to suit anyone else out-of-the-box, the whole esp32 vs esp8266 API divergence doesn't seem to have gotten any better, we're all doing this in our spare time, etc. That being said, you're welcome to look at my code for |
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This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions. |
devbranch rather than formaster.docs/*.This adds a new module (with documentation) which can receive IR pulses from a suitably connected sensor (such as a TSOP382xx). It also can decode RC-5 codes.