Figure 361. Normal Bulk/Control Out/Setup And Bulk/Control In Transactions - ST STM32F207 Series Reference Manual

RM0033
g)
h)

Figure 361. Normal bulk/control OUT/SETUP and bulk/control IN transactions

init _reg(ch_2)
set _ch_en
set _ch_en
set _ch_en
read_rx_sts
read_rx_fifo
set _ch_en
read_rx_stsre
read_rx_sts
read_rx_sts
De-allocate
The channel-specific interrupt service routine for bulk and control OUT/SETUP
transactions is shown in the following code samples.
•
Interrupt service routine for bulk/control OUT/SETUP and bulk/control IN
transactions
a)
Unmask (NAK/TXERR/STALL/XFRC)
if (XFRC)
{
In response to the XFRC interrupt, de-allocate the channel for other transfers
Handling non-ACK responses
Application
1
init_reg(ch _1)
1
write_tx_fifo
(ch_1)
2
(ch _2)
2
write_tx_fifo
(ch_1)
5
(ch _2)
(ch _2)
5
(ch _2)
7
De-allocate
(ch_1)
ad_rx_fifo
7
Disable
(ch _2) 9
11
(ch _2)
13
Bulk/Control OUT/SETUP
USB on-the-go full-speed (OTG_FS)
AHB Host
1
3
MPS
1
MPS
4
RXFLVL interrupt
1
MPS
6
RXFLVL interrupt
6
1
MPS
8
RXFLVL interrupt
RXFLVL interrupt
10
CHH interrupt r
12
RM0033 Rev 9
USB
Non-Periodic Request
Queue
4
Assume that this queue
can hold 4 entries.
ch_1
ch_2
ch_1
ch_2
3
ch_1
ch_2
ch_2
ch_2
ch_2
Device
ai15675
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