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Implement dcd_edpt_iso_xfer() for dcd_samg.c. NOTE: ISO EP not supported

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This commit is contained in:
Reinhard Panhuber
2021-02-13 16:36:32 +01:00
parent 59d6ed9ea4
commit 7ab389db21
1 changed files with 51 additions and 2 deletions
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53
src/portable/microchip/samg/dcd_samg.c
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@@ -25,6 +25,7 @@
*/
#include "tusb_option.h"
#include "common/tusb_fifo.h"
#if CFG_TUSB_MCU == OPT_MCU_SAMG
@@ -43,6 +44,7 @@
typedef struct
{
uint8_t* buffer;
tu_fifo_t* ff;
uint16_t total_len;
volatile uint16_t actual_len;
uint16_t epsize;
@@ -293,6 +295,38 @@ 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, uint16_t total_bytes)
{
(void) rhport;
uint8_t const epnum = tu_edpt_number(ep_addr);
uint8_t const dir = tu_edpt_dir(ep_addr);
xfer_desc_t* xfer = &_dcd_xfer[epnum];
xfer->total_len = total_bytes;
xfer->actual_len = 0;
xfer->buffer = NULL; // Indicates a FIFO shall be used
xfer->ff = ff;
if (dir == TUSB_DIR_OUT)
{
tu_fifo_set_copy_mode_read(ff, TU_FIFO_COPY_CST);
// Enable interrupt when starting OUT transfer
if (epnum != 0) UDP->UDP_IER |= (1 << epnum);
}
else
{
tu_fifo_set_copy_mode_write(ff, TU_FIFO_COPY_CST);
tu_fifo_read_n(ff, (void *) &UDP->UDP_FDR[epnum], xfer_packet_len(xfer));
// TX ready for transfer
csr_set(epnum, UDP_CSR_TXPKTRDY_Msk);
}
return true;
}
// Stall endpoint
void dcd_edpt_stall (uint8_t rhport, uint8_t ep_addr)
{
@@ -402,7 +436,14 @@ void dcd_int_handler(uint8_t rhport)
if (xact_len)
{
// write to EP fifo
xact_ep_write(epnum, xfer->buffer, xact_len);
if (xfer->buffer)
{
xact_ep_write(epnum, xfer->buffer, xact_len);
}
else
{
tu_fifo_read_n(ff, (void *) &UDP->UDP_FDR[epnum], xact_len);
}
// TX ready for transfer
csr_set(epnum, UDP_CSR_TXPKTRDY_Msk);
@@ -428,7 +469,15 @@ void dcd_int_handler(uint8_t rhport)
uint16_t const xact_len = (uint16_t) ((UDP->UDP_CSR[epnum] & UDP_CSR_RXBYTECNT_Msk) >> UDP_CSR_RXBYTECNT_Pos);
// Read from EP fifo
xact_ep_read(epnum, xfer->buffer, xact_len);
if (xfer->buffer)
{
xact_ep_read(epnum, xfer->buffer, xact_len);
}
else
{
tu_fifo_write_n(xfer->ff, (const void *) &UDP->UDP_FDR[epnum], xact_len);
}
xfer_packet_done(xfer);
if ( 0 == xfer_packet_len(xfer) )