what am I doing wrong ??? ESP32 flashing

[uhi22]

This is the part of the console output which shows the download of the software. This looks good, but more interesting would be to see what comes afterwards. In https://github.com/jsphuebner/esp32-web ... n_notes.md I noted

[medo]

there is nothing in it

[medo]

if i make e full clean and erase flash, and then i make a build, then it looks like this

If I build again, it will look like this

then the upload works

then upload the filesystem

on the Serialmonitor looks like this

but still no wifi

[uhi22]

Strange. You could add some further instrumentation in the code, to find out where it stops. Go to the setup() function, and find the DBG_OUTPUT_PORT.println("No RTC found, defaulting to sequential file names");
This still works, we see the output in the console.
Add below this further lines like
DBG_OUTPUT_PORT.println("step 1"); Serial.flush();
The Serial.flush makes sure that the serial data is really transmitted, before the next step is done. Example:

[medo]

It looks like sd_mmc is causing problems

I've now commented out that part, but it just doesn't continue

[uhi22]

Nobody needs this, just delete the SD card things completely
(Johu will beat me for this sentence )

[medo]

I was also wondering why an SD in a controller board, but I think the firmware should be universally applicable

[medo]

I think the esp32, just stop there, unfortunately I don't know why

[uhi22]

Maybe the SD card driver is not happy with something. Just remove everything related to SD card from the code and try again.

[medo]

I have removed everything related to SD card, now i have wifi and can open the web interface,
but now I don't have any values, probably deleted too much in the code, unfortunately I'm not familiar with it

[johu]

Will check later if the correct uarts are selected.

[johu]

sigh...
the uart-backend branch was outdated. Now it has the correct UARTs specified. Please pull again and then remove the SD card code again....

[medo]

Unfortunately I don't know how to do that, I don't know enough about Arduino

[johu]

Unfortunately I don't know how to do that, I don't know enough about Arduino

I have removed everything related to SD card, now i have wifi and can open the web interface,
but now I don't have any values, probably deleted too much in the code, unfortunately I'm not familiar with it

You did it before but can't do it again?
Download esp32-web-interface.ino here https://github.com/jsphuebner/esp32-web-interface and replace the one you used before. Remove the SD-card code as you did before

[medo]

I did that, but no data comes from the controller

[royhen99]

It might be the mismatch in stop bits between the stm32 terminal and the ESP32. I've only used the ESP8266 with uart but had to modify the stop bits to 2 for the initial 115200 baud rate.

[medo]

I think there is still an bug in it, if I install the stm32 firmware, then I no longer have WiFi, if I delete the firmware again, WiFi is available again immediately

OK, I changed that

uart_config_t uart_config = {
.stop_bits = UART_STOP_BITS_2,

and that
uart_read_bytes(INVERTER_PORT, &c, 2, UART_TIMEOUT);


works and values are displayed, and changes are also applied, but when I switch it off and switch it on again, then no wifi again, until you have deleted the st32 firmware, then wifi is back immediately

[JonasErnst]

Hey guys, I do also have problems with the ESP32 both on the SDU Board an the ESP32 CanLite Board. I can flash the ESP without problems but after the reboot there is no WIFI network. I tried everything i found online but without success

UPDATE: I got it working but I cant really figure out why. After flashing the ESP32 with the Arduino Tool I am able to connect to the Wifi network, now I only need to find out why it was not possible with platformio

[johu]

Did you leave the programming jumper on?

[JonasErnst]

Yes i did leave the programming jumper on. Flashing succeded with both tools, but only after the flash with the arduino software i am able to see the wifi network. I followed this guide regarding the platformio:
https://github.com/jsphuebner/Tesla-Fro ... ll/1/files

[johu]

The last step is to remove the jumper, otherwise it will keep booting into the loader

[RetroZero]

Sorry people. I gave up on my ESP8266 and went to a ESP32S3 pico. I have managed to upload the code from https://github.com/jsphuebner/esp32-web-interface.git
Using Arduino IDE, I uploaded it (with and without removing all SD card functions).
I can connect to the ESP board, but no parameters come up.
I have tried connecting it to my Prius Gen2 Boards, but it's identicle.
I have searched all over the place, but cannot get any further.
Thanks in advance for pointers.

[johu]

Flash file system!

[RetroZero]

Thanks Johu.
1. went to https://github.com/jsphuebner/esp32-web ... n_notes.md
2. I went to https://github.com/palmerr23/ESP32-OTA-and-File-Manager
3. I downloaded the Code in Zip format
4. Unzip and created new folder ESP32_OTA_FILESYS
5. I openned the ESP32_OTA_FILESYS.ino in Arduino
6. Following your instructions, I made sure I had exactly the same settings as you noted.
7. Verify in Arduino that the sketch is OK
8. Put wifi credentials in the code where I have put ****

//#define MYWIFI // allow credentials to be stored in a file
#ifdef MYWIFI
#include "mywifi.h"
#else
const char* ssid = "******";
const char* password = "******";
#endif

IS THIS CORRECT??????

9. On esp32S3 - Press and hold the BOOT button down. Press ONCE the RESET button. Release BOOT button
10. Upload Sketch in Arduino
11. Diconnect ESP32 and reconnect (to enter Normal mode)
12. I now see the ESP and can connect to it, but the ESP doesn't connect to my wifi (which is 2.4 Ghz)
13. I then went to http://esp32ota.local/ and followed instructions to format FS - That worked as per instructions.
I4. Went back to .\esp32-webinterface\esp32-web-interface\data and downloaded ALL 30 files via the OTA
15. Went Back to Arduino & Uploaded the ESP32-without-SD_card-functions.txt ( which is esp32-web-interface-uart-backend MODIFIED)
16.I found the ESP again over WiFi and connected to it - The User Interface comes up, but no Spot Values ( that's OK because I haven't connected to my Adapter Board yet)
17. I try to put in my WiFi credentials ( it knows the SSID), but the Password is Blank. I put in my Password and ENTER
I go back to Main Page - Still no Spot Values
18. I notice NO Firmware is uploaded at the Bottom of Main Page, so I followed instructions "A shorter way to change files is, to use in http://inverter.local/ the "Files" tab in the left menu".
I see the ESP32_sine file in the FILES section of the Interface, but on Main Page it still doesn't show firmware version....
19. I attempt to Update the Firmware from the Main Page Menu - It says the Upload is Complete - with the Orange Bar, but it never changes status.
I tried by carrying out the "ESP32 BOOT & RESET" and then not- no difference.
20. I connected the ESP32 to my Adapter board , swapping the TX/RX each time, but no difference.
NOTE: There is a permanent message "Communication problem between ESP & STM"

I feel like Iam missing a fundamental element....and hope to use this post in the future to document the process in the Wiki...so any pointers are appreciated.

[RetroZero]

I was so happy getting this far.....and then - after swapping TX/RX, rebooting, Uploading files via Web-Interface, and I can't remember what else, I decided to go back and load the OTA-FILESYS.
Now I have no more ESP module visible.
Restarted Arduino & computer - no difference.
I suppose an erase of all files via Arduino would be my next step?