About Frank Pilhofer

Frank Pilhofer · 2023-05-03

I am using a USB CDC device on an STM32H7A3 CPU. Most of the code is generated by the Cube IDE, and I have added my own callbacks. It works fine when plugged into a native Windows host or a native Linux host. However, it has an issue when running on ...

Frank Pilhofer · 2023-02-17

I am using HAL_I2C_Master_Transmit(). That generally works well. However, I sometimes run into an issue when the slave device is not responding. HAL_I2C_MasterTransmit() obviously returns an error after running into timeout, as it should. But then I ...

Frank Pilhofer · 2023-05-03

Answering my own question, I have figured out that, in the process of moving the device from the host to the guest, CDC_DeInit_HS() was called as the device was detached from the host. Any ongoing transfer is discarded, and the transfer completion ca...

Frank Pilhofer · 2023-02-20

Thank you all for your answers. I have gathered more data, and I see that my original question was incomplete.First, if I simply disconnect master and slave, i.e., if the master's SCL and SDA pins are not connected to anything, then I can simply re-s...

Frank Pilhofer · 2023-02-17

Hi Foued,the error is TIMEOUT, no other bits are set. No, I am not transmitting more than 255 bytes. Since the slave device is not responding at all, no bytes are transmitted; the master does not receive an ACK and then seems to be stuck in that stat...

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Issue with USB CDC from Linux VM

Recovering from a failed I2C transfer

Re: Issue with USB CDC from Linux VM

Re: Recovering from a failed I2C transfer

Re: Recovering from a failed I2C transfer