About Vyacheslav Popov

Vyacheslav Popov · 2019-09-30

Hi there.Sometimes I receive form CR95HF result which I can't interpret.Here is full dump of data exchange:(TX) 02 02 00 00(RX) 00 00(TX) 02 02 01 00(RX) 00 00(TX) 02 02 00 00(RX) 00 00(TX) 02 02 01 00(RX) 00 00(TX) 02 07 02 00 00 00 00 02 02(RX) 00 ...

Vyacheslav Popov · 2017-01-18

Posted on January 18, 2017 at 12:53Hello there.I have problem with USB Device CDC based MX Cube for stm32f205.When custom program exchange data with device I unplug USB. Then after some time I connect cable again.I can see that device send data from...

Vyacheslav Popov · 2019-10-02

Thank you for your helpfull answer.At the moment used some ST library (I do not know which one. 2015 year in files header). Additionaly I tried to look Linux driver for СR95HF from ST site, but it not handle 0x90 messages too.I will try to use X-CUBE...

Vyacheslav Popov · 2017-01-19

Posted on January 19, 2017 at 14:41 I add some code toHAL_PCD_DisconnectCallback (lines 4 and 5): void HAL_PCD_DisconnectCallback(PCD_HandleTypeDef *hpcd) { USBD_LL_DevDisconnected(hpcd->pData); USB_FlushTxFifo(hpcd->Instance , 0x10); USB_F...

Vyacheslav Popov · 2017-01-19

Posted on January 19, 2017 at 13:30Thank you for response. I know that resistors is no need. But what is the 2 volts which I measure in VBUS when cable is disconnected?Non zero voltage in VBUS is reason why disconnect callback is not called.And what...

Vyacheslav Popov · 2017-01-19

Posted on January 19, 2017 at 09:24Disconnect callback should called from USB interrupt when SEDET bit is set. But when I disconnect cable the bit is not set. I measure PA9 and saw that their level is not zero but about 2 volt. If I connect this pin...

User statistics

User Activity

CR95HF periodic card detection problem

Unplug USB from stm32f205 during data exchange

Re: CR95HF periodic card detection problem

Re: Unplug USB from stm32f205 during data exchange

Re: Unplug USB from stm32f205 during data exchange

Re: Unplug USB from stm32f205 during data exchange