andy/tinyUSB
1
0
Fork 0
Code Issues Pull Requests Actions 1 Packages Projects Releases Wiki Activity

update cdc edpt read

Browse Source
This commit is contained in:
hathach
2020-09-09 16:25:31 +07:00
parent 8b9893cada
commit 33f0a18523
2 changed files with 7 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
src/class/cdc/cdc_device.c
View File

@@ -77,15 +77,13 @@ static void _prep_out_transaction (uint8_t itf)
{
cdcd_interface_t* p_cdc = &_cdcd_itf[itf];
// Prepare for incoming data but only allow what we can store in the ring buffer.
uint16_t const available = tu_fifo_remaining(&p_cdc->rx_ff);
TU_VERIFY( available >= sizeof(p_cdc->epout_buf), );
// claim endpoint
TU_VERIFY( usbd_edpt_claim(TUD_OPT_RHPORT, p_cdc->ep_out), );
// Prepare for incoming data but only allow what we can store in the ring buffer.
uint16_t max_read = tu_fifo_remaining(&p_cdc->rx_ff);
if ( max_read >= sizeof(p_cdc->epout_buf) )
{
usbd_edpt_xfer(TUD_OPT_RHPORT, p_cdc->ep_out, p_cdc->epout_buf, sizeof(p_cdc->epout_buf));
}
usbd_edpt_xfer(TUD_OPT_RHPORT, p_cdc->ep_out, p_cdc->epout_buf, sizeof(p_cdc->epout_buf));
}
//--------------------------------------------------------------------+