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https://github.com/hathach/tinyusb.git
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Implement dcd_edpt_iso_xfer() for dcd_samg.c. NOTE: ISO EP not supported
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@ -25,6 +25,7 @@
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*/
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#include "tusb_option.h"
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#include "common/tusb_fifo.h"
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#if CFG_TUSB_MCU == OPT_MCU_SAMG
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@ -43,6 +44,7 @@
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typedef struct
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{
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uint8_t* buffer;
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tu_fifo_t* ff;
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uint16_t total_len;
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volatile uint16_t actual_len;
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uint16_t epsize;
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@ -293,6 +295,38 @@ bool dcd_edpt_xfer (uint8_t rhport, uint8_t ep_addr, uint8_t * buffer, uint16_t
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return true;
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}
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bool dcd_edpt_iso_xfer (uint8_t rhport, uint8_t ep_addr, tu_fifo_t * ff, uint16_t total_bytes)
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{
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(void) rhport;
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uint8_t const epnum = tu_edpt_number(ep_addr);
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uint8_t const dir = tu_edpt_dir(ep_addr);
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xfer_desc_t* xfer = &_dcd_xfer[epnum];
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xfer->total_len = total_bytes;
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xfer->actual_len = 0;
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xfer->buffer = NULL; // Indicates a FIFO shall be used
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xfer->ff = ff;
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if (dir == TUSB_DIR_OUT)
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{
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tu_fifo_set_copy_mode_read(ff, TU_FIFO_COPY_CST);
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// Enable interrupt when starting OUT transfer
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if (epnum != 0) UDP->UDP_IER |= (1 << epnum);
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}
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else
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{
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tu_fifo_set_copy_mode_write(ff, TU_FIFO_COPY_CST);
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tu_fifo_read_n(ff, (void *) &UDP->UDP_FDR[epnum], xfer_packet_len(xfer));
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// TX ready for transfer
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csr_set(epnum, UDP_CSR_TXPKTRDY_Msk);
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}
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return true;
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}
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// Stall endpoint
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void dcd_edpt_stall (uint8_t rhport, uint8_t ep_addr)
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{
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@ -402,7 +436,14 @@ void dcd_int_handler(uint8_t rhport)
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if (xact_len)
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{
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// write to EP fifo
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xact_ep_write(epnum, xfer->buffer, xact_len);
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if (xfer->buffer)
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{
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xact_ep_write(epnum, xfer->buffer, xact_len);
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}
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else
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{
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tu_fifo_read_n(ff, (void *) &UDP->UDP_FDR[epnum], xact_len);
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}
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// TX ready for transfer
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csr_set(epnum, UDP_CSR_TXPKTRDY_Msk);
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@ -428,7 +469,15 @@ void dcd_int_handler(uint8_t rhport)
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uint16_t const xact_len = (uint16_t) ((UDP->UDP_CSR[epnum] & UDP_CSR_RXBYTECNT_Msk) >> UDP_CSR_RXBYTECNT_Pos);
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// Read from EP fifo
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xact_ep_read(epnum, xfer->buffer, xact_len);
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if (xfer->buffer)
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{
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xact_ep_read(epnum, xfer->buffer, xact_len);
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}
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else
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{
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tu_fifo_write_n(xfer->ff, (const void *) &UDP->UDP_FDR[epnum], xact_len);
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}
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xfer_packet_done(xfer);
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if ( 0 == xfer_packet_len(xfer) )
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