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Implement dcd_edpt_iso_xfer() for INTERRUPT driven dcd_nuc505

This commit is contained in:
Reinhard Panhuber 2021-02-13 21:00:55 +01:00
parent 0c3dc8f99b
commit b634b5958b
1 changed files with 58 additions and 10 deletions
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68
src/portable/nuvoton/nuc505/dcd_nuc505.c
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@ -34,6 +34,7 @@
*/
#include "tusb_option.h"
#include "common/tusb_fifo.h"
#if TUSB_OPT_DEVICE_ENABLED && (CFG_TUSB_MCU == OPT_MCU_NUC505)
@ -94,6 +95,7 @@ static uint32_t bufseg_addr;
static struct xfer_ctl_t
{
uint8_t *data_ptr; /* data_ptr tracks where to next copy data to (for OUT) or from (for IN) */
tu_fifo_t * ff; /* pointer to FIFO required for dcd_edpt_iso_xfer() */
union {
uint16_t in_remaining_bytes; /* for IN endpoints, we track how many bytes are left to transfer */
uint16_t out_bytes_so_far; /* but for OUT endpoints, we track how many bytes we've transferred so far */
@ -164,7 +166,6 @@ static USBD_EP_T *ep_entry(uint8_t ep_addr, bool add)
static void dcd_userEP_in_xfer(struct xfer_ctl_t *xfer, USBD_EP_T *ep)
{
uint16_t bytes_now = tu_min16(xfer->in_remaining_bytes, xfer->max_packet_size);
uint16_t countdown = bytes_now;
/* precompute what amount of data will be left */
xfer->in_remaining_bytes -= bytes_now;
@ -180,16 +181,24 @@ static void dcd_userEP_in_xfer(struct xfer_ctl_t *xfer, USBD_EP_T *ep)
}
/* provided buffers are thankfully 32-bit aligned, allowing most data to be transfered as 32-bit */
while (countdown > 3)
if (xfer->data_ptr)
{
uint32_t u32;
memcpy(&u32, xfer->data_ptr, 4);
uint16_t countdown = bytes_now;
while (countdown > 3)
{
uint32_t u32;
memcpy(&u32, xfer->data_ptr, 4);
ep->EPDAT = u32;
xfer->data_ptr += 4; countdown -= 4;
ep->EPDAT = u32;
xfer->data_ptr += 4; countdown -= 4;
}
while (countdown--)
ep->EPDAT_BYTE = *xfer->data_ptr++;
}
else
{
tu_fifo_read_n(xfer->ff, (void *) (ep->EPDAT_BYTE), bytes_now);
}
while (countdown--)
ep->EPDAT_BYTE = *xfer->data_ptr++;
/* for short packets, we must nudge the peripheral to say 'that's all folks' */
if (bytes_now != xfer->max_packet_size)
@ -402,6 +411,38 @@ bool dcd_edpt_xfer(uint8_t rhport, uint8_t ep_addr, uint8_t *buffer, uint16_t to
return true;
}
bool dcd_edpt_iso_xfer (uint8_t rhport, uint8_t ep_addr, tu_fifo_t * ff, uint16_t total_bytes)
{
(void) rhport;
TU_ASSERT(0x80 != ep_addr && 0x00 != ep_addr); // Must not be used for control stuff
/* mine the data for the information we need */
tusb_dir_t dir = tu_edpt_dir(ep_addr);
USBD_EP_T *ep = ep_entry(ep_addr, false);
struct xfer_ctl_t *xfer = &xfer_table[ep - USBD->EP];
/* store away the information we'll needing now and later */
xfer->data_ptr = NULL; // Indicates a FIFO shall be used
xfer->ff = ff;
xfer->in_remaining_bytes = total_bytes;
xfer->total_bytes = total_bytes;
if (TUSB_DIR_IN == dir)
{
tu_fifo_set_copy_mode_write(ff, TU_FIFO_COPY_CST); // For the PHY in nuc505 the source and destination pointer have to be constant!
ep->EPINTEN = USBD_EPINTEN_BUFEMPTYIEN_Msk;
}
else
{
tu_fifo_set_copy_mode_read(ff, TU_FIFO_COPY_CST); // For the PHY in nuc505 the source and destination pointer have to be constant!
xfer->out_bytes_so_far = 0;
ep->EPINTEN = USBD_EPINTEN_RXPKIEN_Msk;
}
return true;
}
void dcd_edpt_stall(uint8_t rhport, uint8_t ep_addr)
{
(void) rhport;
@ -615,8 +656,15 @@ void dcd_int_handler(uint8_t rhport)
#else
uint16_t const available_bytes = ep->EPDATCNT & USBD_EPDATCNT_DATCNT_Msk;
/* copy the data from the PC to the previously provided buffer */
for (int count = 0; (count < available_bytes) && (xfer->out_bytes_so_far < xfer->total_bytes); count++, xfer->out_bytes_so_far++)
*xfer->data_ptr++ = ep->EPDAT_BYTE;
if (xfer->data_ptr)
{
for (int count = 0; (count < available_bytes) && (xfer->out_bytes_so_far < xfer->total_bytes); count++, xfer->out_bytes_so_far++)
*xfer->data_ptr++ = ep->EPDAT_BYTE;
}
else
{
tu_fifo_write_n(xfer->ff, (const void *) &ep->EPDAT_BYTE, tu_min16(available_bytes, xfer->total_bytes - xfer->out_bytes_so_far));
}
/* when the transfer is finished, alert TinyUSB; otherwise, continue accepting more data */
if ( (xfer->total_bytes == xfer->out_bytes_so_far) || (available_bytes < xfer->max_packet_size) )