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    mcspr on dev

    docs: mention exception decoder… (compare)

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    ardupic commented #1311
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    mcspr commented #1311
  • Nov 25 14:16
    mcspr commented #1311
@mcspr you said that there were problems with flashing minimal tasmota binaries..but I used the full, recommended and latest tasmota release. But yes, I guess the firmware wont work anyways. :D
thank you for your help!
Hello! I made one copy on the 08/02 .. and I build another today, but this last are rebooting device.. please, it is possible to trace back to know why?

[000278] [TELNET] Listening on port 23
[000280] [WEBSERVER] Webserver running on port 80
[000281] [LIGHT] Number of channels: 0
[000299] [RELAY] Retrieving mask: 0b0
[000300] [RELAY] Relay #0 boot mode 2
[000300] [RELAY] Relay #1 boot mode 2
[000300] [RELAY] Relay #2 boot mode 2
[000302] [RELAY] Relay #3 boot mode 2
[000305] [RELAY] Relay #4 boot mode 2
[000308] [RELAY] Relay #5 boot mode 2
[000312] [RELAY] Relay #6 boot mode 2
[000315] [RELAY] Relay #7 boot mode 2
[000318] [RELAY] Relay #8 boot mode 2
[000321] [RELAY] Relay #9 boot mode 2
[000325] [RELAY] Relay #10 boot mode 2
[000330] [RELAY] Number of relays: 11
[000332] [BUTTON] Number of buttons: 1
[000335] [LED] Number of leds: 1
[000338] [MQTT] AsyncMqttClient, SSL DISABLED, Autoconnect ENABLED
[000347] [MQTT] Retry WAITING (Now 347, Last 0, Delay 5000, Step 5000)

Exception (28):
epc1=0x4000bdc8 epc2=0x00000000 epc3=0x00000000 excvaddr=0x00000000 depc=0x00000000


ctx: cont
sp: 3ffffd00 end: 3fffffc0 offset: 01a0
3ffffea0:  3fffdad0 3ffffeec 3ffffee0 3fff0d60  
3ffffeb0:  3fffff10 3fffff20 00000000 4022b89f  
3ffffec0:  00000017 3fffff10 00000050 402326a0  
3ffffed0:  00000003 3fffff10 00000050 3fffff20  
3ffffee0:  3fffff10 00000017 3fff0d60 4022b90a  
3ffffef0:  3fffdad0 3fffff10 3ffe8ba8 3fff0f64  
3fffff00:  3fffdad0 3fff0d60 3ffe8ba8 402095f6  
3fffff10:  00706374 0074726f 83000000 ffffffff  
3fffff20:  6e6c6574 79007465 8620278c 70747400  
3fffff30:  4020d100 80000000 40236364 40236350  
3fffff40:  4020b5f8 00000000 40236364 40236350  
3fffff50:  4020bc54 6d754479 40236364 3fff0f64  
3fffff60:  3fffdad0 00000000 0000000e 4021aac4  
3fffff70:  74736f00 656d616e 80efef00 ffffffff  
3fffff80:  3fff3000 000e000f 80efeffe feefeffe  
3fffff90:  feefeffe feefeffe feefeffe feefeffe  
3fffffa0:  feefeffe feefeffe 3fff0f24 40233c9c  
3fffffb0:  feefeffe feefeffe 3ffe8600 4010106d  

 ets Jan  8 2013,rst cause:2, boot mode:(3,6)

load 0x4010f000, len 1384, room 16 
tail 8
chksum 0x2d
csum 0x2d

Decoder say:
Exception 28: LoadProhibited: A load referenced a page mapped with an attribute that does not permit loads
PC: 0x4000bdc8
EXCVADDR: 0x00000000

Decoding stack results
0x4022b89f: esp8266::MDNSImplementation::MDNSResponder::addService(char const*, char const*, char const*, unsigned short) at C:\Users\Alexandre\Documents\Arduino\1.8.12\hardware\esp8266com\esp8266\libraries\ESP8266mDNS\src\LEAmDNS.cpp line 308
0x402326a0: String::~String() at C:\Users\Alexandre\Documents\Arduino\1.8.12\hardware\esp8266com\esp8266\cores\esp8266\WString.cpp line 125
0x4022b90a: esp8266::MDNSImplementation::MDNSResponder::addService(String const&, String const&, unsigned short) at C:\Users\Alexandre\Documents\Arduino\1.8.12\hardware\esp8266com\esp8266\libraries\ESP8266mDNS\src\LEAmDNS.cpp line 378
0x402095f6: mdnsServerSetup() at C:\Users\Alexandre\Documents\Arduino\build\teste_espurna\espurna\code\espurna/mdns.ino line 47
0x4020d100: _apiWebSocketOnConnected(ArduinoJson::JsonObject&) at C:\Users\Alexandre\Documents\Arduino\build\libraries\ArduinoJson\src/ArduinoJson/JsonObjectSubscript.hpp line 41
0x40236364: std::_Function_base::_Base_manager ::_M_manager(std::_Any_data&, std::_Any_data const&, std::_Manager_operation) at c:\users\alexandre\documents\arduino\1.8.12\hardware\esp8266com\esp8266\tools\xtensa-lx106-elf\xtensa-lx106-elf\include\c++\4.8.2/functional line 1934
0x40236350: std::_Function_handler ::_M_invoke(std::_Any_data const&, ArduinoJson::JsonObject&) at c:\users\alexandre\documents\arduino\1.8.12\hardware\esp8266com\esp8266\tools\xtensa-lx106-elf\xtensa-lx106-elf\include\c++\4.8.2/functional line 2069
0x4020b5f8: _mqttWebSocketOnData(ArduinoJson::JsonObject&) at C:\Users\Alexandre\Documents\Arduino\build\teste_espurna\espurna\code\espurna/mqtt.ino line 457
0x40236364: std::_Function_base::_Base_manager ::_M_manager(std::_Any_data&, std::_Any_data const&, std::_Manager_operation) at c:\users\alexandre\documents\arduino\1.8.12\hardware\esp8266com\esp8266\tools\xtensa-lx106-elf\xtensa-lx106-elf\include\c++\4.8.2/functional line 1934
0x40236350: std::_Function_handler ::_M_invoke(std::_Any_data const&, ArduinoJson::JsonObject&) at c:\users\alexandre\documents\arduino\1.8.12\hardware\esp8266com\esp8266\tools\xtensa-lx106-elf\xtensa-lx106-elf\include\c++\4.8.2/functional line 2069
0x4020bc54: _mqttWebSocketOnVisible(ArduinoJson::JsonObject&) at C:\Users\Alexandre\Documents\Arduino\build\teste_espurna\espurna\code\espurna/mqtt.ino line 450
0x40236364: std::_Function_base::_Base_manager ::_M_manager(std::_Any_data&, std::_Any_data const&, std::_Manager_operation) at c:\users\alexandre\documents\arduino\1.8.12\hardware\esp8266com\esp8266\tools\xtensa-lx106-elf\xtensa-lx106-elf\include\c++\4.8.2/functional line 1934
0x4021aac4: setup() at C:\Users\Alexandre\Documents\Arduino\build\teste_espurna\espurna\code\espurna/espurna.ino line 226
0x40233c9c: loop_wrapper() at C:\Users\Alexandre\Documents\Arduino\1.8.12\hardware\esp8266com\esp8266\cores\esp8266\core_esp8266_main.cpp line 177
My config is
Excuse me, I made a mistake in general.h
Problem solved.. :)
Guys, please, I can auth login on the Chrome, but not on the Edge. It is normal on dev yet?
Max Prokhorov

Excuse me, I made a mistake in general.h
Problem solved.. :)

...how though? :) which flag causes the crash?

Росен Добринов
Hello. Can someone to explain me this? https://github.com/xoseperez/espurna/blob/373dd27d60c5dbfc51d2ae6fe6b00d9db87fee91/code/espurna/web.ino#L542-L547
Last 2 weeks I'm digging in this code and can't understand how _server->begin() has invoked before WiFi goes live? My test app throw exception here
Max Prokhorov
@RDobrinov decoded stacktrace points at begin() right there? effectively, only thing it does is add a listener, which does not require wifi being up
Росен Добринов
@mcspr I don't know. I didn't use a decoder. Just invoke _server.begin() after MESSAGE_CONNECTED received from JustWiFi and webserver goes live. How to add as listener?
Max Prokhorov
@RDobrinov _server.begin() already uses, there's no option to set ip in espasyncwebserver
@mcspr Hi! I try it many times before report.
If I can not connect to network, then it reset..
Only if not connect..
My Exception Decoder is
Exception 3: LoadStoreError: Processor internal physical address or data error during load or store
PC: 0x40100c58: umm_malloc_core(size_t) at C:\Users\Alexandre\Documents\Arduino\1.8.12\hardware\esp8266com\esp8266\cores\esp8266\umm_malloc\umm_malloc.cpp line 397
EXCVADDR: 0x400715a1

Decoding stack results
0x40100e48: malloc(size_t) at C:\Users\Alexandre\Documents\Arduino\1.8.12\hardware\esp8266com\esp8266\cores\esp8266\umm_malloc\umm_malloc.cpp line 511
0x40100530: ets_post(uint8, ETSSignal, ETSParam) at C:\Users\Alexandre\Documents\Arduino\1.8.12\hardware\esp8266com\esp8266\cores\esp8266\core_esp8266_main.cpp line 160
0x401010a0: calloc(size_t, size_t) at C:\Users\Alexandre\Documents\Arduino\1.8.12\hardware\esp8266com\esp8266\cores\esp8266\umm_malloc\umm_malloc.cpp line 820
0x40100758: pvPortZalloc(size_t, char const*, int) at C:\Users\Alexandre\Documents\Arduino\1.8.12\hardware\esp8266com\esp8266\cores\esp8266\heap.cpp line 301
0x40100581: __wrap_spi_flash_read(uint32_t, uint32_t*, size_t) at C:\Users\Alexandre\Documents\Arduino\1.8.12\hardware\esp8266com\esp8266\cores\esp8266\core_esp8266_phy.cpp line 309
0x40100581: __wrap_spi_flash_read(uint32_t, uint32_t*, size_t) at C:\Users\Alexandre\Documents\Arduino\1.8.12\hardware\esp8266com\esp8266\cores\esp8266\core_esp8266_phy.cpp line 309
0x4021e8f4: ESP8266WiFiSTAClass::disconnect(bool) at C:\Users\Alexandre\Documents\Arduino\1.8.12\hardware\esp8266com\esp8266\libraries\ESP8266WiFi\src\ESP8266WiFiSTA.cpp line 367
0x4021e8d0: ESP8266WiFiSTAClass::disconnect(bool) at C:\Users\Alexandre\Documents\Arduino\1.8.12\hardware\esp8266com\esp8266\libraries\ESP8266WiFi\src\ESP8266WiFiSTA.cpp line 360
0x40100628: millis() at C:\Users\Alexandre\Documents\Arduino\1.8.12\hardware\esp8266com\esp8266\cores\esp8266\core_esp8266_wiring.cpp line 188
0x40100b88: umm_free_core(void*) at C:\Users\Alexandre\Documents\Arduino\1.8.12\hardware\esp8266com\esp8266\cores\esp8266\umm_malloc\umm_malloc.cpp line 316
0x40100e13: free(void*) at C:\Users\Alexandre\Documents\Arduino\1.8.12\hardware\esp8266com\esp8266\cores\esp8266\umm_malloc\umm_malloc.cpp line 362
0x40220afd: JustWifi::_doScan() at C:\Users\Alexandre\Documents\Arduino\build\libraries\justwifi-master\src\JustWifi.cpp line 360
0x40220f39: JustWifi::_machine() at C:\Users\Alexandre\Documents\Arduino\build\libraries\justwifi-master\src\JustWifi.cpp line 465
0x4022101c: JustWifi::loop() at C:\Users\Alexandre\Documents\Arduino\build\libraries\justwifi-master\src\JustWifi.cpp line 905
0x402079b2: wifiLoop() at C:\Users\Alexandre\Documents\Arduino\build\teste_espurna\espurna\code\espurna/wifi.ino line 719
0x4020367b: loop() at C:\Users\Alexandre\Documents\Arduino\build\teste_espurna\espurna\code\espurna/espurna.ino line 310
0x402359fc: loop_wrapper() at C:\Users\Alexandre\Documents\Arduino\1.8.12\hardware\esp8266com\esp8266\cores\esp8266\core_esp8266_main.cpp line 180
What You think?

Hi folks; OK, noob question, but I am trying to make a new 'board' in the platform.io config, and it is not clear to me how. (Please do refer me to any existing docco, though I did not find such).
I gather this from reading source:

  • there's a 'platformio.ini' that looks like one place where boards are defined in some way
  • there's a 'board.ino', a 'migrate.ino', a 'arduinio.h', and a 'hardware.h' that looks like they need modifications to coordinate with stuff in 'platformio.ini' that might be added

Background: I am exploring support for a Gosund plug, which doesn't appear to be explicitly supported ATPIT. Those haven't arrived, but I have a handful of ESP01 modules (old, 512kB) that I wanted to kick the tires of the build system in advance.
I have never used PlatformIO, or Arduino, but I do have a few decades of C/C++ and embedded experience.
TIA; Cheers!

@ziggurat29 see hardware.h on the config folder
@adbensi I did look at that, but I'm sure I will need to munge the other files as well? platformio.ini seems the most arcane -- the C stuff I can grok. Well, except one thing that may be arduinoesque:
  • the '#define RELAY1_PIN' number. My board has one GPIO called '2' (in ESP8266 parlance). So, would it also be '2' in this codebase, or is there some different numbering?
Yes... gpio is the port of the esp8266
You can put here:
#if defined(MANUFACTURER) and defined(DEVICE)

    // user has defined custom hardware, no need to check anything else
Ok, thanks, I'll give it a go. I'm still mystified by the platformio.ini, which seems to 'drive' it. I do notice a definition for the 512 kb boards, but I don't see any examples that actually use it, alas. (these are 5 year old boards, good times)
Max Prokhorov
@adbensi If the crash happens right after debug log prints something about scanning or attempting to connect to wifi... can't really offer much advice about that :/ erasing flash usually helps with that (specifically last 16KiB), or erase.config terminal if module survives enough time to read commands
Max Prokhorov
...but you should probably do a full save of flash contents before clearing it, if that is reproducible 100%. maybe some debugging can be done with that
Росен Добринов

@mcspr Do you mean _server->begin() create listener at Hm!
Backtrace decoded

0x4008c434: invoke_abort at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/esp32/panic.c:707
0x4008c665: abort at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/esp32/panic.c:707
0x40088869: xQueueGenericReceive at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/freertos/queue.c:1996
0x4013648a: sys_mutex_lock at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/lwip/port/esp32/freertos/sys_arch.c:203
0x40136766: sys_arch_protect at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/lwip/port/esp32/freertos/sys_arch.c:469
0x40126204: do_memp_malloc_pool at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/lwip/lwip/src/core/memp.c:459
0x4012626d: memp_malloc at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/lwip/lwip/src/core/memp.c:459
0x40127838: tcp_alloc at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/lwip/lwip/src/core/tcp.c:1765
0x40127924: tcp_new_ip_type at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/lwip/lwip/src/core/tcp.c:1782
0x400d5c5e: AsyncServer::begin() at /mnt/500GB/esp32DotFW/.pio/libdeps/esp32doit-devkit-v1/AsyncTCP/src/AsyncTCP.cpp:1039
0x400dbe5a: AsyncWebServer::begin() at /mnt/500GB/esp32DotFW/.pio/libdeps/esp32doit-devkit-v1/ESP Async WebServer/src/WebServer.cpp:54
0x400d219e: webSetup() at /mnt/500GB/esp32DotFW/.pio/libdeps/esp32doit-devkit-v1/ArduinoJson_ID64@5.13.4/src/ArduinoJson/StaticJsonBuffer.hpp:60
0x400d2f7c: setup() at /mnt/500GB/esp32DotFW/.pio/libdeps/esp32doit-devkit-v1/ArduinoJson_ID64@5.13.4/src/ArduinoJson/StaticJsonBuffer.hpp:60
0x400df44f: loopTask(void*) at /home/vbox/.platformio/packages/framework-arduinoespressif32/cores/esp32/main.cpp:14
0x40088b7d: vPortTaskWrapper at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/freertos/port.c:355 (discriminator 1)

Part of code mostly from espura

void webSetup() 
    // Cache the Last-Modifier header value
    snprintf_P(_last_modified, sizeof(_last_modified), PSTR("%s %s GMT"), __DATE__, __TIME__);    
    // Create server
    //unsigned int port = webPort();
    unsigned int port = 80;

    _server = new AsyncWebServer(port);
    _server->rewrite("/", "/index.html");
    _server->serveStatic("/", SPIFFS, "/")
        .setFilter([](AsyncWebServerRequest *request) -> bool {
            return true;
    _server->on("/auth", HTTP_GET, _onAuth);
    DEBUG_MSG_P(PSTR("[WEBSERVER] Webserver running on port %u\n"), port);
Any ideas, why tcp_new_ip_type invoke an abort()?
folks; does anyone know if, or if not, the Realtek RTL8710 is supported? The espurna /seems/ to be Espressif oriented, but I wasn't sure.
I ask because I just got some Teckin SP10 units and cracked one open, and Longtour Photology evidently made a design change because the module now sports an RTL8710 rather than an ESP8266. The RTL8710 uses an ARM core, so definitely different tooling.
Max Prokhorov
@RDobrinov ah. you should've mentioned that it was esp32 :) setup sequence is weird there, you can sort-of workaround that issue by having something call WiFi.peristent(false); WiFi.enableSTA(true); before webserver, because network task isn't running yet (at least from what i remember). WiFi connection can happen later down the line
Max Prokhorov
@ziggurat29 nope. fw is definitely espressif oriented, we depend on more than a couple platform specific features
Росен Добринов
@mcspr Sounds bad. No other chances, so I start to rewrite whole WiFi. Tnx.
Joop Hilverink
I used platformio and flashed sonoff rf bridge 433 succesfully. On my atempt to make wifi connection, i probably made a type mismatch with the default wifi password. Now this device is not visible anymore in my list of wifi devices.
How can i solve this?
Росен Добринов
@HilverinkJ Flash it again if you put wrong password as default ( 7 chars for example )
Joop Hilverink
Yes I did. unfortunately I don't know exactly what I entered ...
Росен Добринов
@HilverinkJ You flashed, change 'fibonacci' default password on first login, or change default password in source #define ADMIN_PASS in general.h? If first one, just reset to default setting ( push and hold button on RF-Bridge for 10 sec. ), if second just check what you type as password in ADMIN_PASS. Make sure the password entered in source are at least 8 characters. Then erase flash and flash fw again.
Joop Hilverink
Tanks, Solved.
Joop Hilverink
Can anyone tell me if it is possible to realize the following with ESPurna:
Detecting temperature and switching a relay at an adjustable temperature.
Sending temperature and on / off switch information to domoticz.
Use of the following hardware:
Temperature sensor DS18B20.
Hardware Tinkerman ESPurna.
Max Prokhorov
@HilverinkJ see https://github.com/xoseperez/espurna/wiki/RPN-Rules#rule-execution, hope that's what you mean
domoticz should be able to receive data from sensors by default, just need to adjust idx settings. there is a known issue with incoming data though, xoseperez/espurna#2166
Росен Добринов
@mcspr Can you help, or give me idea? I try to rewrite parts of espurna for esp32. Now I stuck at this - https://github.com/xoseperez/espurna/blob/b289c77021c4d3fcd70feb25ca14178929f31e6c/code/espurna/ws_internal.h#L108 throws an exception after json for Status page in web. Backtrace is
0x400d3b27: std::function<void (ArduinoJson::JsonObject&)>::operator()(ArduinoJson::JsonObject&) const at /mnt/500GB/esp32DotFW/src/ws.ino:624
0x400d67c7: ws_data_t::sendCurrent(ArduinoJson::JsonObject&) at /mnt/500GB/esp32DotFW/include/ws_internal.h:111
  \-> inlined by: ws_data_t::send(ArduinoJson::JsonObject&) at /mnt/500GB/esp32DotFW/include/ws_internal.h:119
0x400d6893: _wsHandleClientData(bool) at /mnt/500GB/esp32DotFW/src/ws.ino:554
0x400d6929: _wsLoop() at /mnt/500GB/esp32DotFW/src/ws.ino:573
0x400d1a65: loop() at /mnt/500GB/esp32DotFW/src/ws.ino:624
0x400e3c91: loopTask(void*) at /home/vbox/.platformio/packages/framework-arduinoespressif32/cores/esp32/main.cpp:19
0x40088b7d: vPortTaskWrapper at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/freertos/port.c:355 (discriminator 1)

Guru Meditation Error: Core  1 panic'ed (LoadProhibited). Exception was unhandled.
Ignore the line numbers - there are lots of debug code.
Max Prokhorov
std::function operator() does not check for nullptr, some callback was not set / set as nullptr perhaps?

Guys, please, it is possible to use RF 433 on the custom hardware? I have one receiver 433 connected on the SerialRX pin, but, I get only this over debug:

[079121] [WEBSOCKET] Requested action: rfblearn
[079121] [RF] Entering LEARN mode
[087227] [RF] Learn timeout triggered
[087227] [RF] Action 0xA2
[087227] [RF] Learn timeout

My custom hardware is:

    #define RFB_DIRECT                1
    #define RF_SUPPORT                  1

    #define RFB_RX_PIN                  3
    #define RFB_TX_PIN                  GPIO_NONE

    #define SERIAL_BAUDRATE             19200
    #define DEBUG_SERIAL_SUPPORT        0

    // Buttons
    #define BUTTON1_PIN                 0
    #define BUTTON1_PRESS               BUTTON_MODE_NONE
    #define BUTTON1_CLICK               BUTTON_MODE_TOGGLE    
    #define BUTTON1_DBLCLICK            BUTTON_MODE_AP
    #define BUTTON1_RELAY               2

    // Relays
    #define DEBUG_SERIAL_SUPPORT        0
    #define RELAY_PROVIDER              RELAY_PROVIDER_STM
    #define DUMMY_RELAY_COUNT           10

    #define RELAY1_PIN                  GPIO_NONE
    #define RELAY1_TYPE                 RELAY_TYPE_NORMAL
    #define RELAY2_PIN                  GPIO_NONE
    #define RELAY2_TYPE                 RELAY_TYPE_NORMAL
    #define RELAY3_PIN                  GPIO_NONE
    #define RELAY3_TYPE                 RELAY_TYPE_NORMAL
    #define RELAY4_PIN                  GPIO_NONE
    #define RELAY4_TYPE                 RELAY_TYPE_NORMAL
    #define RELAY5_PIN                  GPIO_NONE
    #define RELAY5_TYPE                 RELAY_TYPE_NORMAL

    #define RELAY6_PIN                  GPIO_NONE
    #define RELAY6_TYPE                 RELAY_TYPE_NORMAL
    #define RELAY7_PIN                  GPIO_NONE
    #define RELAY7_TYPE                 RELAY_TYPE_NORMAL
    #define RELAY8_PIN                  GPIO_NONE
    #define RELAY8_TYPE                 RELAY_TYPE_NORMAL
    #define RELAY9_PIN                  GPIO_NONE
    #define RELAY9_TYPE                 RELAY_TYPE_NORMAL
    #define RELAY10_PIN                  GPIO_NONE
    #define RELAY10_TYPE                 RELAY_TYPE_NORMAL

Please, any ideas?

I want to change relay state/switch by RF433 too. I have one expansor over SerialTX working.. because this I put RFB_TX_PIN GPIO_NONE.
ESPurna can not drive 433 module receiver direct? It works by serial to another MCU connected to 433 module only?
Max Prokhorov
@adbensi you disable debug over serial but RELAY_PROVIDER_STM still uses serial pin. also note of serialmode -> https://github.com/esp8266/Arduino/blob/db75d2c448bfccc6dc308bdeb9fbd3efca7927ff/cores/esp8266/HardwareSerial.h#L62-L66, begin() method needs to be different than what we do.
see Serial.begin(...) spots, system.ino & debug.ino

folks; question regarding flashing procedure:

  • I have already successfully built and flashed to a generic ESP01 board, so I think I understand the build and flashing process in general
  • my actual goal is to use a Gosund WP3, which is a garden variety smart socket
  • I broke one of them down and verified it is based on a ESP8285 module from CDTech
  • I can see GPOI 0, rst, rx, tx exposed on the module, and I mapped out the led, button and relay gpios, so I am pretty confident that I can create a definition and build a working firmware for it

so my question is: is it required to crack open these modules individually and solder wires to flash the built firmware, or is there some way to 'hijack' the stock firmware's update procedure to avoid having to crack them open? Did I miss something?