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Rework audio driver

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This commit is contained in:
Reinhard Panhuber
2021-01-31 19:08:23 +01:00
parent f1551d7a5f
commit 84406f1654
6 changed files with 442 additions and 363 deletions
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8
src/portable/st/synopsys/dcd_synopsys.c
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@@ -670,13 +670,15 @@ bool dcd_edpt_xfer (uint8_t rhport, uint8_t ep_addr, uint8_t * buffer, uint16_t
return true;
}
bool dcd_edpt_iso_xfer (uint8_t rhport, uint8_t ep_addr, tu_fifo_t * ff)
// The number of bytes has to be given explicitly to allow more flexible control of how many
// bytes should be written and second to keep the return value free to give back a boolean
// success message. If total_bytes is too big, the FIFO will copy only what is available
// into the USB buffer!
bool dcd_edpt_iso_xfer (uint8_t rhport, uint8_t ep_addr, tu_fifo_t * ff, uint16_t total_bytes)
{
// USB buffers always work in bytes so to avoid unnecessary divisions we demand item_size = 1
TU_ASSERT(ff->item_size == 1);
uint16_t total_bytes = tu_fifo_count(ff);
uint8_t const epnum = tu_edpt_number(ep_addr);
uint8_t const dir = tu_edpt_dir(ep_addr);