ST STM32F207 series - Figure 386. Normal Interrupt OUT;IN Transactions - Slave Mode

RM0033 Rev 9 1219/1381
RM0033 USB on-the-go high-speed (OTG_HS)
1260
Figure 386. Normal interrupt OUT/IN transactions - Slave mode
• Interrupt service routine for interrupt OUT/IN transactions
a) Interrupt OUT
Unmask (NAK/TXERR/STALL/XFRC/FRMOR)
if (XFRC)
{
Reset Error Count
Mask ACK
De-allocate Channel
}
else
if (STALL or FRMOR)
{