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fix computing transferred bytes with E4

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This commit is contained in:
hathach 2021-06-07 14:33:24 +07:00
parent ce30109b5b
commit 501de2a5e8
1 changed files with 5 additions and 6 deletions
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11
src/portable/raspberrypi/rp2040/rp2040_usb.c
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@ -205,10 +205,7 @@ void _hw_endpoint_xfer_sync(struct hw_endpoint *ep)
// Update hw endpoint struct with info from hardware
// after a buff status interrupt
// Get the buffer state and amount of bytes we have
// transferred
uint32_t buf_ctrl = _hw_endpoint_buffer_control_get_value32(ep);
uint16_t transferred_bytes = buf_ctrl & USB_BUF_CTRL_LEN_MASK;
#if TUSB_OPT_HOST_ENABLED
// RP2040-E4
@ -227,6 +224,9 @@ void _hw_endpoint_xfer_sync(struct hw_endpoint *ep)
// end::host_buf_sel_fix[]
#endif
// Get tranferred bytes after adjusted buf sel
uint16_t const transferred_bytes = buf_ctrl & USB_BUF_CTRL_LEN_MASK;
// We are continuing a transfer here. If we are TX, we have successfullly
// sent some data can increase the length we have sent
if (!ep->rx)
@ -249,7 +249,7 @@ void _hw_endpoint_xfer_sync(struct hw_endpoint *ep)
// Sometimes the host will send less data than we expect...
// If this is a short out transfer update the total length of the transfer
// to be the current length
if ((ep->rx) && (transferred_bytes < ep->transfer_size))
if ((ep->rx) && (transferred_bytes < ep->wMaxPacketSize))
{
pico_trace("Short rx transfer\n");
// Reduce total length as this is last packet
@ -289,8 +289,7 @@ bool _hw_endpoint_xfer_continue(struct hw_endpoint *ep)
{
pico_trace("Completed transfer of %d bytes on ep %d %s\n",
ep->len, tu_edpt_number(ep->ep_addr), ep_dir_string[tu_edpt_dir(ep->ep_addr)]);
// Notify caller we are done so it can notify the tinyusb
// stack
// Notify caller we are done so it can notify the tinyusb stack
_hw_endpoint_lock_update(ep, -1);
return true;
}