Type of ESP32 Board

[nodurah]

Hello Miroslav,

could you please tell me which type of ESP32 board should be selected in the arduino IDE to compile the reflow controller successfully? I couldn't find that piece of information in the documentation.

Thanks in advance!

Cheers, Nodura

[dronecz]

Hi, it should compile fine if you select ESP32 Dev module in Arduino IDE.

[nodurah]

Hello, thanks for the quick answer!

[MfromB]

hello nodurah, were you able to compile successfully and is your controller already running?

[nodurah]

Hello Miroslav,

thanks for tracking this issue. Right now I am on vacation. As soon I can compile it and get it running again I will get back to you!

Cheers nodurah

[nodurah]

Hello,

so I had to opportunity to compile it. There seems to be a typo in the Reflow_Oven_Controller.ino in line 121. The "Reflow_logic.h" is in the original file with a small "r" while the .h is with a capital "R". After fixing that minor issue the code compiles but I get a few errors:

/ESP32-Reflow-Controller/Firmware/v2/Reflow_Oven_Controller/LCD.ino:34:91: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings] char *menuItems[] = {"Select profile", "Change profile", "Add profile", "Settings", "Info"}; ^ /ESP32-Reflow-Controller/Firmware/v2/Reflow_Oven_Controller/LCD.ino:34:91: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings] /ESP32-Reflow-Controller/Firmware/v2/Reflow_Oven_Controller/LCD.ino:34:91: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings] /ESP32-Reflow-Controller/Firmware/v2/Reflow_Oven_Controller/LCD.ino:34:91: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings] /ESP32-Reflow-Controller/Firmware/v2/Reflow_Oven_Controller/LCD.ino:34:91: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings] /ESP32-Reflow-Controller/Firmware/v2/Reflow_Oven_Controller/button.ino: In function 'byte digitalButton(int)': /ESP32-Reflow-Controller/Firmware/v2/Reflow_Oven_Controller/button.ino:49:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ /ESP32-Reflow-Controller/Firmware/v2/Reflow_Oven_Controller/profiles.ino: In function 'void loadProfiles(int)': /ESP32-Reflow-Controller/Firmware/v2/Reflow_Oven_Controller/profiles.ino:126:61: warning: passing NULL to non-pointer argument 3 of 'size_t Preferences::getBytes(const char*, void*, size_t)' [-Wconversion-null] size_t schLen = preferences.getBytes(spaceName, NULL, NULL); ^ /ESP32-Reflow-Controller/Firmware/v2/Reflow_Oven_Controller/LCD.ino: In function 'char* string2char(String)': /ESP32-Reflow-Controller/Firmware/v2/Reflow_Oven_Controller/LCD.ino:43:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ /ESP32-Reflow-Controller/Firmware/v2/Reflow_Oven_Controller/button.ino: In function 'byte digitalButton(int)': /ESP32-Reflow-Controller/Firmware/v2/Reflow_Oven_Controller/button.ino:8:51: warning: iteration 3 invokes undefined behavior [-Waggressive-loop-optimizations] buttonVal[i] = digitalRead(digitalButtonPins[i]); ~~~~~~~~~~~~~~~~~~~^ /ESP32-Reflow-Controller/Firmware/v2/Reflow_Oven_Controller/button.ino:5:21: note: within this loop for (int i = 0; i < numDigButtons; i++) { /ESP32-Reflow-Controller/Firmware/v2/Reflow_Oven_Controller/Reflow_Oven_Controller.ino: In function 'void setup()': /ESP32-Reflow-Controller/Firmware/v2/Reflow_Oven_Controller/Reflow_Oven_Controller.ino:189:28: warning: iteration 3 invokes undefined behavior [-Waggressive-loop-optimizations] if (digitalButtonPins[i] > 20 && digitalButtonPins[i] < 40) { ~~~~~~~~~~~~~~~~~~~^ /ESP32-Reflow-Controller/Firmware/v2/Reflow_Oven_Controller/Reflow_Oven_Controller.ino:187:22: note: within this loop for (byte i = 0; i < numDigButtons - 1 ; i++) { ~~^~~~~~~~~~~~~~~~~~~

After flashing and reset it starts up but the buttons of the panel are not working.

Maybe you have a working flash image with the latest features that you could provide under "releases"?

Cheers, Nodurah

[nodurah]

Hello,

after further investigation the cause of the error messages seemed to be an outdated arduino-ide. Sorry for that. With the latest

• Arduino ide: 2.2.1
• WifiManager: 2.0.16-rc2 (latest via zip-file)
• all other libraries according to your git repo and also with newest version

it compiles without issues. The problem with the buttons not working nevertheless remains. I also looked into the serial output. The Wifi access points opens only sporadically and when - no connection is possible. The programm seems to be stuck at some point

1:24:09.320 -> Text bounds for: "ESP32" x1:2 y1:-24 w:108 h:26
11:24:09.320 -> Text bounds for: "Reflow" x1:2 y1:-24 w:108 h:26
11:24:09.320 -> Text bounds for: "Controller" x1:2 y1:-24 w:154 h:26
11:24:09.353 -> Text bounds for: "by" x1:1 y1:-12 w:18 h:17
11:24:09.353 -> Text bounds for: "Czech maker" x1:1 y1:-12 w:105 h:13
11:24:09.353 -> Text bounds for: "www.czechmaker.com" x1:0 y1:-12 w:179 h:13
11:24:11.344 -> State is :0
11:24:11.407 -> Text bounds for: "Status:" x1:1 y1:-12 w:53 h:13
11:24:11.407 -> Text bounds for: "" x1:0 y1:0 w:0 h:0
11:24:11.407 -> Text bounds for: "Temp : 0" x1:2 y1:-24 w:138 h:32
11:24:11.407 -> Text bounds for: "Profile in use:" x1:1 y1:-12 w:106 h:13
11:24:11.407 -> Temp : 0
11:24:11.632 -> 27
11:24:11.632 -> 32
11:24:11.632 -> 33
11:24:11.632 -> *wm:AutoConnect 
11:24:11.632 -> *wm:No wifi saved, skipping 
11:24:11.632 -> *wm:AutoConnect: FAILED for  1 ms
11:24:11.632 -> *wm:StartAP with SSID:  ReflowOvenAP
11:24:12.146 -> *wm:AP IP address: 192.168.4.1
11:24:12.146 -> *wm:Starting Web Portal 
11:24:12.146 -> Configportal running
11:24:12.146 -> Initializing SD card...Card failed or not present, no SD Card data logging possible...
11:24:12.758 -> 
11:24:12.758 -> Number of profiles: 0
11:24:12.758 -> Titles and alloys: 
11:24:12.758 -> 
11:24:12.982 -> State is :0
11:24:13.046 -> Text bounds for: "Status:" x1:1 y1:-12 w:53 h:13
11:24:13.046 -> Text bounds for: "" x1:0 y1:0 w:0 h:0
11:24:13.046 -> Text bounds for: "Temp : 21" x1:2 y1:-24 w:154 h:32
11:24:13.046 -> Text bounds for: "Profile in use:" x1:1 y1:-12 w:106 h:13
11:24:13.046 -> Temp : 21
11:24:17.449 -> button 1 (28)
11:24:17.512 -> button 1 (30)
11:24:17.545 -> button 2 (32)
11:24:17.610 -> button 1 (38)
11:28:11.140 -> 
11:28:11.140 -> 
11:28:11.140 -> 
11:28:11.140 ->
[...] 

Any help would be appreciated as the oven by itself was quite useful before the update.

Cheers Nodurah

[dronecz]

Hi, sorry I forgot to reply to your previous post.

Are you compiling code from the main brain? If so, try to downgrade your ESP support to the 1.0.6 version. I did not compile it for a long time, but I think there is some issue (as you can see 😞 ) with 2.x.x version of the ESP support.

[nodurah]

No worries, with the 1.0.6 ESP version it work flawlessly. You might consider updating the README.md with this helpful piece of information...

Thanks for your support!

Cheers, Nodurah