diff options
| author | Nathan Conrad <[email protected]> | 2019-09-25 20:53:22 -0400 |
|---|---|---|
| committer | Nathan Conrad <[email protected]> | 2019-09-25 20:55:15 -0400 |
| commit | f19082f02d1ff3cd9f458476fd558a7e7fabc1bf (patch) | |
| tree | c8cfbf456206d23a71f2885f4e0edc403b6089eb /src/portable/st | |
| parent | 048e0448c0b8edf4cdd82f72e094b29c2f094281 (diff) | |
Reset TX and RX endpoints to NAK when receiving setup packet.
Diffstat (limited to 'src/portable/st')
| -rw-r--r-- | src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c b/src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c index 890dffcf0..16bef6c37 100644 --- a/src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c +++ b/src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c @@ -418,10 +418,15 @@ static uint16_t dcd_ep_ctr_handler(void) uint8_t userMemBuf[8]; /* Get SETUP Packet*/ count = pcd_get_ep_rx_cnt(USB, EPindex); - //TU_ASSERT_ERR(count == 8); - dcd_read_packet_memory(userMemBuf, *pcd_ep_rx_address_ptr(USB,EPindex), 8); + if(count == 8) // Setup packet should always be 8 bits. If not, ignore it, and try again. + { + // Must reset EP to NAK (in case it had been stalling) (though, maybe too late here) + pcd_set_ep_rx_status(USB,0u,USB_EP_RX_NAK); + pcd_set_ep_tx_status(USB,0u,USB_EP_TX_NAK); + dcd_read_packet_memory(userMemBuf, *pcd_ep_rx_address_ptr(USB,EPindex), 8); + dcd_event_setup_received(0, (uint8_t*)userMemBuf, true); + } /* SETUP bit kept frozen while CTR_RX = 1*/ - dcd_event_setup_received(0, (uint8_t*)userMemBuf, true); pcd_clear_rx_ep_ctr(USB, EPindex); } else if ((wEPVal & USB_EP_CTR_RX) != 0U) // OUT |