AnsweredAssumed Answered

STM32L152 VCP Speed problem

Question asked by ofri.igal on Dec 9, 2014
Latest reply on Feb 12, 2015 by ofri.igal

I have to usethe USB-FS of the STM32L152 as a bridge between a PC and a BLE module.
I have a PC firmware upgrade via USART for the BLE.
If I connect PC->FTDI->BLE I manage to program the BLE with no problem.
I tried to replace the FTDI with STM32L152 but the firmware upgrade application on the PC gets time out error, the response from the BLE isn't received fast enough.
The packets can be small (less than 64 bytes) later large (more than 64bytes), I have no control over this.
I use the VCP example fro ST site.
Any ideas?