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Forum Index : Microcontroller and PC projects : PicoMiteWeb alphas a14+, now with added Telnet
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| matherp Guru  Joined: 11/12/2012 Location: United KingdomPosts: 9133 |
Trivial interlock missing - I made the assumption that if you were using the firmware on a pico_w you would enable wifi |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 9133 |
Question: If I was to implement a basic MQTT capability, does it need anything other than a publish command? Sub is much more complicated as MMbasic would have to set up a background watch and trigger yet another interrupt if it sees a message Thoughts? |
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| bigfix Senior Member  Joined: 20/02/2014 Location: AustriaPosts: 128 |
Publish with the Retain bit set allows to have the last published topic/message stored at the Broker, even if there are no current subscribers A new subscriber would then grab the last published topic from the broker As a minimum implementation I would think that a "onetime" SUB which is only triggered on demand would work, as long as the topic was published with the retain option Realtime depends then on the repetition rate I do not know if the default clients use the retain option, but in a controlled environment it could work i.e. Tasmota as a very common sensor/actor SW has a rather fine granularity for retain usage Tasmota MQTT It is a long time since I played with MQTT - so my knowledge may be outdated... Edited 2023-02-19 07:02 by bigfix |
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led-bloon Senior Member Joined: 21/12/2014 Location: AustraliaPosts: 205 |
@matherp - Peter Additional error when WEB browser disconnects during file transfer. (TCP server set with/without the timeout value) Following does not come up immediately, but after another HTTP request is received, from any source. At this point the PicoMiteW has returned to the command prompt, BUT does not respond to commands over USB. The LED still flashes, the WiFi is still active. Pings to PicoMiteW ok BUT very slow (average 760 mSecs ilo 3.2 mSecs). A power-cycle (or reset?) only avenue to recover. Also ran over-night. Two WEB browsers, 7000+ pages served. All good. led Miss you George |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 9133 |
Quick update I've now got a MQTT client running and can publish a message. HOWEVER in order to make it useful I now need to try and get TLS running so we can connect to secure websites (HTTPS port 443 or in the case of MQTT port 8883) This could take some time  and more RAM memory |
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LucV Regular Member  Joined: 19/02/2023 Location: NetherlandsPosts: 62 |
@ matherp - Peter @ bigfix Hi, I am new at this forum, but have been lurking for several months now. And as a newbee I do not want to be cheeky but I do want to add something to the discussion on MQTT. Bigfix's idea has some value however that would only be usefull for new subscribers if I am not mistaking. The subscriber will not get new values if the broker gets a new value. Especially for IOT projects this will limit the value for MQTT. If you would for example build a lamp with a Picomite then you would not be able to put it on and off as the Pico would not get the latest info from the broker. If it is to complicated leave MQTT out. There are other options. BTW if testing is required: I have my own local broker running on a Raspberry Pi. Luc Luc's tech Blog |
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homa Guru Joined: 05/11/2021 Location: GermanyPosts: 351 |
It runs very stable for me! > option list PicoMite MMBasic Version 5.07.07a18 OPTION COLOURCODE ON OPTION WIFI xxx, ***************** OPTION TCP SERVER PORT 80 OPTION TELNET CONSOLE ON > Test of a string: mystring is 17-02-2023 21:48:41 Test of a string: mystring is 17-02-2023 22:24:00 Test of a string: mystring is 18-02-2023 08:54:42 Test of a string: mystring is 18-02-2023 15:32:16 Test of a string: mystring is 18-02-2023 17:25:44 Test of a string: mystring is 18-02-2023 17:48:39 Test of a string: mystring is 18-02-2023 18:11:40 Test of a string: mystring is 19-02-2023 01:16:44 Test of a string: mystring is 19-02-2023 09:11:06 Test of a string: mystring is 19-02-2023 14:02:34 Is there a way to add functionality when needed? And otherwise keep the memory as large as possible? Does the suggestion from the other thread work? https://www.thebackshed.com/forum/ViewTopic.php?TID=15582&P=2 |
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| bigfix Senior Member Joined: 20/02/2014 Location: AustriaPosts: 128 |
Agree, for direct realtime interaction with a client you would need to poll the Broker at relatively short time intervals. However there are many use cases where every minute or more would be fine i.e. a local weatherstation or PV/battery Controller which publishes current state to various subscribers in the house MQTT is often just a standard way to store and retrieve data If the choice is between no SUB or a polled SUB, I rather go for polled/triggered About TLS Many people try to avoid dependence on external (Cloud) services and run everything local on their own network With a local MQTT Broker I do not care about TLS for typical home useage A relatively high poll rate would also not matter much in local LANs/Brokers If it makes any sense from a resource saving view, I could imagine TLS and interrupt driven SUB as configurable options - off by default |
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| homa Guru Joined: 05/11/2021 Location: GermanyPosts: 351 |
addendum: here is how i can crash the PicoMite W with the a18. Launch. Access with FireFox, so far ok. Further access via ncat, also still ok. Then in alternation, works. BUT then close the TAB in FireFox and in the same FF open a new TAB to the PicoMite WebServer and the Pico gets out: > option list PicoMite MMBasic Version 5.07.07a18 OPTION COLOURCODE ON OPTION WIFI xxx, ***************** OPTION TCP SERVER PORT 80 OPTION TELNET CONSOLE ON > load "server2" > run ntp address 129.70.132.32 got ntp response: 19/02/2023 20:05:21 _________________________________________________ 1: GET / HTTP/1.1 Host: 192.168.1.109 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/110.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8 Accept-Language: de,en-US;q=0.7,en;q=0.3 Accept-Encoding: gzip, deflate Connection: keep-alive Upgrade-Insecure-Requests: 1 _________________________________________________ 1 : String is GET / HTTP sending page _________________________________________________ 1: POST / HTTP/1.1 Host: 192.168.1.109 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/110.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8 Accept-Language: de,en-US;q=0.7,en;q=0.3 Accept-Encoding: gzip, deflate Content-Type: application/x-www-form-urlencoded Content-Length: 6 Origin: http://192.168.1.109 Connection: keep-alive Referer: http://192.168.1.109/ Upgrade-Insecure-Requests: 1 led=on _________________________________________________ 1 : 488 led=on String is POST / HTTP sending page _________________________________________________ 1: small _________________________________________________ 1 : _________________________________________________ 2: POST / HTTP/1.1 Host: 192.168.1.109 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/110.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8 Accept-Language: de,en-US;q=0.7,en;q=0.3 Accept-Encoding: gzip, deflate Content-Type: application/x-www-form-urlencoded Content-Length: 6 Origin: http://192.168.1.109 Connection: keep-alive Referer: http://192.168.1.109/ Upgrade-Insecure-Requests: 1 led=on _________________________________________________ 2 : 488 led=on String is POST / HTTP sending page _________________________________________________ 1: xxx _________________________________________________ 1 : _________________________________________________ 1: xxx _________________________________________________ 1 : _________________________________________________ 1: xxx _________________________________________________ 1 : _________________________________________________ 2: POST / HTTP/1.1 Host: 192.168.1.109 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/110.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8 Accept-Language: de,en-US;q=0.7,en;q=0.3 Accept-Encoding: gzip, deflate Content-Type: application/x-www-form-urlencoded Content-Length: 6 Origin: http://192.168.1.109 Connection: keep-alive Referer: http://192.168.1.109/ Upgrade-Insecure-Requests: 1 led=on _________________________________________________ 2 : 488 led=on String is POST / HTTP sending page _________________________________________________ 1: xxx# _________________________________________________ 1 : _________________________________________________ 1: yy _________________________________________________ 1 : _________________________________________________ 1: _________________________________________________ 1 : _________________________________________________ 2: POST / HTTP/1.1 Host: 192.168.1.109 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/110.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8 Accept-Language: de,en-US;q=0.7,en;q=0.3 Accept-Encoding: gzip, deflate Content-Type: application/x-www-form-urlencoded Content-Length: 6 Origin: http://192.168.1.109 Connection: keep-alive Referer: http://192.168.1.109/ Upgrade-Insecure-Requests: 1 led=on _________________________________________________ 2 : 488 led=on String is POST / HTTP sending page [35] s$="" Error : No response to request from connection no. 0 > |
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NPHighview Senior Member Joined: 02/09/2020 Location: United StatesPosts: 200 |
First of all, I am once again floored by the intensity and quality of the work that Peter, LucV, and thwill are doing to advance the MMBasic software for the Pico family. Thank you! With no luck, I've scoured the forums for a version of a PicoW manual that lists the WEB commands & syntax, and all the new configuration options. Can anyone point me to such a document or forum topic? Thank you! Live in the Future. It's Just Starting Now! |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 9133 |
Full release and manuals should be out in the next couple of days Edited 2023-05-05 04:39 by matherp |
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atmega8 Guru Joined: 19/11/2013 Location: GermanyPosts: 722 |
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