Timed out while waiting for ack

Toniebox Hardware CC3200 (V1, V2)
21

Hi folks,

exactly the same error here:

  • The target is a C3200 box
  • I’m using Windows 11, Python 3.13.3
  • I tried two different UART / USB-C adapters (actually three different adapter boards, two from one type and one from another), but no luck. They are both FTDI232 (FT32RL), configured to use 3.3V for sure.
  • Cables are kept short (< 25cm) and are soldered directly to the PCB of the TonieBox. Connections were verified using a mulimeter.
  • Connections between the FTDI232 adapter and the TonieBox debug port are as shown in Debug port | Toniebox Hacking

Output:

D:\TonieBox>cc3200tool -p COM7 --reset dtr read_flash ExtractedFromBox/backup.bin
2025-06-03 00:00:30,012 -- Connecting to target...
2025-06-03 00:00:32,214 -- timed out while waiting for ack
2025-06-03 00:00:34,428 -- timed out while waiting for ack
2025-06-03 00:00:36,633 -- timed out while waiting for ack
2025-06-03 00:00:38,845 -- timed out while waiting for ack
2025-06-03 00:00:41,060 -- timed out while waiting for ack
2025-06-03 00:00:41,061 -- Could not connect to target: Did not get ACK on break condition

I did not only try different UART adapters, but also different reset methods:

  • Reset via --reset dtr
  • Manual reset by connecting RST to GND
  • Different reset timings (in relation to the power-up and the command execution

I did also try different methods to pull the SOP2 high:

  • bridging SOP2 to VCC of the TonieBox
  • connecting SOP2 to RTS and adding --sop2 ~rts
  • connecting SOP2 to VCC of the UART adapter

The SOP2 voltage was measured with a simple multimeter and it was 3.25V.

I tried with the battery and with the power supply. Both lead to the same effect.

In general, I apply the following sequence:

  • Connect UART adapter to TonieBox
  • Connect USB-C of the UART adapter to the PC
  • Connect power (battery or power supply) → TonieBox LED goes to permanent green
  • Execute command → RX LED of the UART adapter lights up for maybe 0.5s and then goes off again

I did also try without pulling SOP2 high with Putty and a Baudrate of 921600. I received the following from the bootloader:

Screenshot 2025-06-02 232022

Any idea what else I could try or what I’m doing wrong? I even ordered a second TonieBox today to see if it’s me or the box… Hahaha :smiley:

Thanks and best wishes,
Sebastian

22

Are both uarts usb-c ones? Those seems to be problematic.

23

Yes, they are. Not sure if it’s allowed to post links to the product page here, but they are both rated very well on the largest American marketplace platform starting with “A”. But I guess in the end, they are all from China.

Should I get e.g. a Micro-USB one?

24

I bought this one and it worked fine:

AZDelivery Kompatibel mit FT232RL… Amazon.de

25

Hi

I got yours as Usb-C version and it’s linked with usbC->UsbA with logi or OnePlus data cabel and on my Laptop with usbC->UsbC ocetea or Samsung data cabel.
Direkt on Front or Mainbord Panel.

26

As said. Usb-c version cause problems. Get a micro usb version.

27

Thanks for the fast reply, I ordered the one you have now. Let’s see if that solves the problem. The other two models I tried previously (the USB-C ones) are those:

Once confirmed that USB-C is the issue, maybe one should add a big red warning to the wiki not to buy USB-C adapters.

I will let you know, if it worked, once the new adapter arrived.

Thanks so far.

28

Yeah thx the problem was realy only Usb-C .

29

Hi, same here.

The recommended adapter arrived, connected as before, worked like a charm at first try.

Again, thanks a lot @henryk

30

I added the hint in the Wiki and in teddycloud itself, will be available after it is merged.