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| Using ESP8266 / ESP32 with the Interface Gateway? 15/01/2023 at 21:32 #150164 | |
DonRiver
166 posts |
Wondering if anyone's had success using an ESP8266 or ESP32 to connect to the interface gateway? I've been using an ESP8266 and ukmaker/StompClient and making very little progress... https://github.com/ukmaker/StompClient Got a theory that this library relies on a websocket connection, but it needs to be a plain TCP connection… (named for the one in Tasmania, not in Russia) Last edited: 15/01/2023 at 22:38 by DonRiver Reason: None given Log in to reply |
| Using ESP8266 / ESP32 with the Interface Gateway? 16/01/2023 at 16:28 #150167 | |
GeoffM
6377 posts |
DonRiver in post 150164 said:Got a theory that this library relies on a websocket connection, but it needs to be a plain TCP connection…I had a quick look at the source code and believe you're correct. SimSig Boss Log in to reply |
| Using ESP8266 / ESP32 with the Interface Gateway? 16/01/2023 at 17:12 #150168 | |
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DonRiver
166 posts |
I'm going to go ahead with making my own STOMP client code, probably just enough to speak to SimSig, not a full STOMP protocol implementation, and see how far I get!
(named for the one in Tasmania, not in Russia) Log in to reply |
| Using ESP8266 / ESP32 with the Interface Gateway? 16/01/2023 at 20:58 #150169 | |
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DonRiver
166 posts |
ahaha A little bit of Wireshark spelunking, comparing with known-good STOMP messages sent using stomp.py and I can now _send_ commands. The hard part was manipulating the Arduino/ESPx WiFiClient library to send a message with \0 as the final byte and there's probably a better way. Here's the relevant snippet, somewhat elided from what's actually running on my workbench: ``` #include <ESP8266WiFi.h> WiFiClient client = WiFiClient(); WiFi.begin("my_wifi_ssid", "my_wifi_password"); client.connect("192.168.178.36", 51515); while (client.availableForWrite() == 0) { delay(1); } String msg = String("STOMP\naccept-version:1.1\n\n"); msg += '\0'; client.write(msg.c_str(), msg.length()); msg = String("SEND\ncontent_length:43\ndestination:/topic/TD_ALL_SIG_AREA\n\n"); msg += String("{\"cc_msg\": {\"to\": \"A161\", \"descr\": \"0Z42\"}}"); msg += '\0'; client.write(msg.c_str(), msg.length()); ``` Obviously this is extremely brittle, but creating functions to do this more nicely is trivial from here... the harder part will be receiving and filtering messages... edit: I've now got nice functions for sending STOMP frames generally, sending route request and bpull messages, and connecting to SimSig with or without username+password for the payware sims. I am somewhat chuffed. (named for the one in Tasmania, not in Russia) Last edited: 17/01/2023 at 00:20 by DonRiver Reason: None given Log in to reply |
| Using ESP8266 / ESP32 with the Interface Gateway? 17/01/2023 at 13:50 #150172 | |
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DonRiver
166 posts |
Noticed an issue - if I update the sim via one gateway client, the sim doesn't always update other subscribed gateway clients: Here, I update the TD berths from the ESP8266 on my tabletop, but the console client on my PC doesn't see the changes - whereas it does if I update the same berths via the SimSig UI. I'd have put this into "Various minor issues" but it's locked... https://youtu.be/VUun7stvWa4 (named for the one in Tasmania, not in Russia) Log in to reply |
| Using ESP8266 / ESP32 with the Interface Gateway? 18/01/2023 at 02:03 #150179 | |
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DonRiver
166 posts |
I've made approximately half of a level crossing controller... https://www.youtube.com/watch?v=1Q1Az1axdts Edit: and another half... just two or three more halves to go :D https://www.youtube.com/watch?v=Be1VnlWRP98 (named for the one in Tasmania, not in Russia) Last edited: 19/01/2023 at 02:03 by DonRiver Reason: None given Log in to reply |