ST STM32L4 5 Series User Manual

DocID024597 Rev 5 1731/1830
RM0351 USB on-the-go full-speed (OTG_FS)
1774
}
The application is expected to write the data packets into the transmit FIFO when the
space is available in the transmit FIFO and the Request queue. The application can
make use of the NPTXFE interrupt in OTG_GINTSTS to find the transmit FIFO space.
b) Bulk/Control IN
Unmask (TXERR/XFRC/BBERR/STALL/DTERR)
if (XFRC)
{
Reset Error Count
Unmask CHH
Disable Channel
Reset Error Count
Mask ACK
}
else if (TXERR or BBERR or STALL)
{
Unmask CHH
Disable Channel
if (TXERR)
{
Increment Error Count
Unmask ACK
}
}
else if (CHH)
{
Mask CHH
if (Transfer Done or (Error_count == 3))
{
De-allocate Channel
}
else
{
Re-initialize Channel
}
}
else if (ACK)
{
Reset Error Count
Mask ACK
}
else if (DTERR)
{
Reset Error Count
}

ST STM32L4 5 Series Specifications

General

Brand	ST
Model	STM32L4 5 Series
Category	Microcontrollers
Language	English