About abaldur

abaldur · 2019-04-25

I'm using the USB CDC library on a STM32L452 created with CubeMX and have run into some problems with receiving data over USB. Every week or so I experience that the device stops receiving data (the transmit side works fine). In other words, the CDC_...

abaldur · 2019-04-09

HiI use the STM32L452 configured as a USB CDC device which is connected to a host PC.Once every 1-2 weeks the communication breaks down in the OUT direction as seen from the host.In other words the host receives data, but it's not able to send anythi...

abaldur · 2019-04-08

Hi all,Is the source code of the bootloader (that is used to perform application programming over serial interface) available to download?The AN2606 says that "The bootloader is stored in the internal boot ROM memory (system memory) of STM32 devices....

abaldur · 2019-03-05

HiFor some time I have been using the ST-Link programmer from a NUCLEO-L452RE board for programming a custom STM32 board (external MCU). It has been working very well.Recently, I have acquired a NUCLEO-L452RE-P, which has a bit different ST-Link prog...

abaldur · 2019-02-25

HiI use the STM32L452 which is configured as a USB CDC device using CubeMX. The device is used as a "gateway" that connects a linux host to a CAN bus system (essentially a USB-to-CAN adapter). The linux host configures the USB device as an SLCAN base...

abaldur · 2019-04-12

Update:The problem happened again. I then tried to call USBD_CDC_ReceivePacket and this turned out to get reception started again. So far so good.On various forum posts I have encountered that people describe that the problem happens when the USB rec...

abaldur · 2019-04-11

Does anyone know if this issue has been fixed:https://community.st.com/s/question/0D50X00009XkfIBSAZ/stm32cube-usb-cdc-possible-bug-found-rx-tx-race-condition/ abaldur

abaldur · 2019-04-09

Unfortunately not at the moment. Do you have recommendations for tools to debug an issue like this?/ abaldur

abaldur · 2019-04-08

Great, sounds pretty much like the tool that I'm looking for.Do you know how well it deals with updating a "fleet" of devices that shares the same bus, like on a CAN bus? I guess its my job to broadcast a command to all the nodes to make them enter b...

abaldur · 2019-04-08

Thx for the links. Looks interesting.In my case, I have a CAN bus with many nodes where quite often all the nodes needs to be updated (as we do a lot of development). Do you know of any bootloaders that are specifically suitable for this? It's quite ...

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USB CDC device sometimes fails to receive

Known issues with STM32 USB CDC?

Source code for STM32 bootloader?

Why ST-Link programmer on NUCLEO-XXXXRX works while NUCLEO-XXXXRX-P does not?

How to debug USB related issues?

Re: Known issues with STM32 USB CDC?

Re: Known issues with STM32 USB CDC?

Re: Known issues with STM32 USB CDC?

Re: Source code for STM32 bootloader?

Re: Source code for STM32 bootloader?