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Implement dcd_edpt_iso_xfer() for dcd_nuc120.c

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This commit is contained in:
Reinhard Panhuber 2021-02-13 17:06:27 +01:00
parent 7ab389db21
commit e681678402
1 changed files with 54 additions and 4 deletions
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58
src/portable/nuvoton/nuc120/dcd_nuc120.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_NUC120)
@ -76,6 +77,7 @@ static bool active_ep0_xfer;
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 */
@ -142,7 +144,15 @@ static void dcd_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);
memcpy((uint8_t *)(USBD_BUF_BASE + ep->BUFSEG), xfer->data_ptr, bytes_now);
if (xfer->data_ptr)
{
memcpy((uint8_t *)(USBD_BUF_BASE + ep->BUFSEG), xfer->data_ptr, bytes_now);
}
else
{
tu_fifo_read_n(xfer->ff, (void *) (USBD_BUF_BASE + ep->BUFSEG), bytes_now);
}
ep->MXPLD = bytes_now;
}
@ -286,6 +296,36 @@ 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;
/* 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_INC); // For the PHY in nuc120 the source and destination pointer have to be incremented!
dcd_in_xfer(xfer, ep);
}
else
{
tu_fifo_set_copy_mode_read(ff, TU_FIFO_COPY_INC); // For the PHY in nuc120 the source and destination pointer have to be incremented!
xfer->out_bytes_so_far = 0;
ep->MXPLD = xfer->max_packet_size;
}
return true;
}
void dcd_edpt_stall(uint8_t rhport, uint8_t ep_addr)
{
(void) rhport;
@ -389,9 +429,17 @@ void dcd_int_handler(uint8_t rhport)
if (out_ep)
{
/* copy the data from the PC to the previously provided buffer */
memcpy(xfer->data_ptr, (uint8_t *)(USBD_BUF_BASE + ep->BUFSEG), available_bytes);
if (xfer->data_ptr)
{
memcpy(xfer->data_ptr, (uint8_t *)(USBD_BUF_BASE + ep->BUFSEG), available_bytes);
xfer->data_ptr += available_bytes;
}
else
{
tu_fifo_write_n(xfer->ff, (const void *) (USBD_BUF_BASE + ep->BUFSEG), available_bytes);
}
xfer->out_bytes_so_far += available_bytes;
xfer->data_ptr += available_bytes;
/* when the transfer is finished, alert TinyUSB; otherwise, accept more data */
if ( (xfer->total_bytes == xfer->out_bytes_so_far) || (available_bytes < xfer->max_packet_size) )
@ -403,7 +451,9 @@ void dcd_int_handler(uint8_t rhport)
{
/* update the bookkeeping to reflect the data that has now been sent to the PC */
xfer->in_remaining_bytes -= available_bytes;
xfer->data_ptr += available_bytes;
/* increment only if xfer->data_ptr != NULL - if xfer->data_ptr == NULL then a FIFO is used for which xfer->data_ptr MUST STAY ZERO! */
if (xfer->data_ptr) xfer->data_ptr += available_bytes;
/* if more data to send, send it; otherwise, alert TinyUSB that we've finished */
if (xfer->in_remaining_bytes)