ESP32 UART-USB Brige How to use

[stefan.erni]

Hi Martin

Thanks for the support. I tried, but I always end up with a new error and then I get a little lost. I'll keep trying.

Code: Select all

ERROR: Directory "C:\C#_sourcecode\_#FC11\Tiny_usb\main" does not exist! Please specify a valid component under C:\C#_sourcecode\_#FC11\Tiny_usb or try to use --path

C:\C#_sourcecode\_#FC11\Tiny_usb>ERROR: Directory "C:\C#_sourcecode\_#FC11\Tiny_usb\main" does not exist! Please specify a valid component under C:\C#_sourcecode\_#FC11\Tiny_usb or try to use --path

[mnfisher]

Something looks awry with the path ?

How (and where) are you creating the flowchart?

Martin

[stefan.erni]

I made a copy of supplementary.c supplementary.h from the supplementary folder to Tiny_usb
I did not help...

2025-12-04_10-28-51.PNG (34.85 KiB) Viewed 570 times

[Steve-Matrix]

May also need "main"?

[mnfisher]

Yes - supplementary.h & .c need to go into tiny_usb (project directory) /main/includes - and add includes to CMakeLists.txt as above.

Martin

[stefan.erni]

ok I create main and all...

Code: Select all

In file included from C:/Users/Kfs-Forschung/Desktop/esp-idf-2/mtxesp32_s3_sdkconfig/main/esp-project.c:20:
C:\C#_sourcecode\_#FC11\Tiny_usb\tinyusb_test.h:64:10: fatal error: supplementary.h: No such file or directory

[mnfisher]

Odd - the main directory should be created with the project - you could try either pasting the .h and .c files into the supplementary code (instead of the #includes) or give them a fixed address (#include "c:/test/file.h")

Martin

[stefan.erni]

Hi Martin

I haven't had any success yet.
But I've noticed that when I connect UART0 to pins GPIO43 and GPIO44,
I can no longer flash the ESP32-S3 as easily.
I have to press the boot button and plug in the USB-C, then flash and remove the USB-C again and plug it back in.
But when I deactivate UART0 again, I can flash comfortably with Flowcode.
So something is happening with the built-in UART to USB bridge.

[mnfisher]

Some progress? Compiling okay now? Does it appear to connect to USB with a new port?

Can you post your code so far?

Martin

[stefan.erni]

Hi Martin

I used another computer. I tested the two UARTs with it and everything is fine.
Later this week, I will perform the same tests on the other computer where I had the problems.
I tried to use the bridge there.

My testfirmware:

Software.zip

(297.73 KiB) Downloaded 30 times

IMG_5381.jpeg (89.88 KiB) Viewed 344 times

The image shows how UART0 and UART1 work and, incidentally, how UART1 is only slightly delayed and not, as assumed, only when uart0 is finished.

scope_206.png (33.2 KiB) Viewed 344 times