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moving edpt_stream API into common tusb.c

This commit is contained in:
hathach 2022-12-22 00:34:35 +07:00
parent 9e8ea44925
commit 8323e4b79a
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GPG Key ID: F5D50C6D51D17CBA
5 changed files with 239 additions and 146 deletions
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179
src/class/cdc/cdc_host.c
View File

@ -42,56 +42,23 @@
//--------------------------------------------------------------------+
// MACRO CONSTANT TYPEDEF
//--------------------------------------------------------------------+
typedef struct {
tu_fifo_t ff;
// mutex: read if ep rx, write if e tx
OSAL_MUTEX_DEF(ff_mutex);
// TODO xfer_fifo can skip this buffer
uint8_t* ep_buf;
uint16_t ep_bufsize;
uint8_t ep_addr;
}tu_edpt_stream_t;
bool tu_edpt_stream_init(tu_edpt_stream_t* s, bool use_wr_mutex, bool overwritable,
void* ff_buf, uint16_t ff_bufsize,
uint8_t* ep_buf, uint16_t ep_bufsize)
bool tu_edpt_stream_write_zlp_if_needed(tu_edpt_stream_t* s, uint32_t last_xferred_bytes)
{
osal_mutex_t new_mutex = osal_mutex_create(&s->ff_mutex);
(void) new_mutex;
(void) use_wr_mutex;
tu_fifo_config(&s->ff, ff_buf, ff_bufsize, 1, overwritable);
tu_fifo_config_mutex(&s->ff, use_wr_mutex ? new_mutex : NULL, use_wr_mutex ? NULL : new_mutex);
s->ep_buf = ep_buf;
s->ep_bufsize = ep_bufsize;
return true;
}
bool tu_edpt_stream_clear(tu_edpt_stream_t* s)
{
return tu_fifo_clear(&s->ff);
}
bool tu_edpt_stream_write_zlp_if_needed(uint8_t daddr, tu_edpt_stream_t* s, uint32_t last_xferred_bytes)
{
uint16_t const bulk_packet_size = (tuh_speed_get(daddr) == TUSB_SPEED_HIGH) ? TUSB_EPSIZE_BULK_HS : TUSB_EPSIZE_BULK_FS;
uint16_t const bulk_packet_size = (s->ep_speed == TUSB_SPEED_HIGH) ? TUSB_EPSIZE_BULK_HS : TUSB_EPSIZE_BULK_FS;
// ZLP condition: no pending data, last transferred bytes is multiple of packet size
TU_VERIFY( !tu_fifo_count(&s->ff) && last_xferred_bytes && (0 == (last_xferred_bytes & (bulk_packet_size-1))) );
if ( usbh_edpt_claim(daddr, s->ep_addr) )
if ( usbh_edpt_claim(s->daddr, s->ep_addr) )
{
TU_ASSERT( usbh_edpt_xfer(daddr, s->ep_addr, NULL, 0) );
TU_ASSERT( usbh_edpt_xfer(s->daddr, s->ep_addr, NULL, 0) );
}
return true;
}
uint32_t tu_edpt_stream_write_xfer(uint8_t daddr, tu_edpt_stream_t* s)
uint32_t tu_edpt_stream_write_xfer(tu_edpt_stream_t* s)
{
// skip if no data
TU_VERIFY( tu_fifo_count(&s->ff), 0 );
@ -99,7 +66,7 @@ uint32_t tu_edpt_stream_write_xfer(uint8_t daddr, tu_edpt_stream_t* s)
// Claim the endpoint
// uint8_t const rhport = 0;
// TU_VERIFY( usbd_edpt_claim(rhport, p_cdc->ep_in), 0 );
TU_VERIFY( usbh_edpt_claim(daddr, s->ep_addr) );
TU_VERIFY( usbh_edpt_claim(s->daddr, s->ep_addr) );
// Pull data from FIFO -> EP buf
uint16_t const count = tu_fifo_read_n(&s->ff, s->ep_buf, s->ep_bufsize);
@ -107,7 +74,7 @@ uint32_t tu_edpt_stream_write_xfer(uint8_t daddr, tu_edpt_stream_t* s)
if ( count )
{
//TU_ASSERT( usbd_edpt_xfer(rhport, p_cdc->ep_in, p_cdc->epin_buf, count), 0 );
TU_ASSERT( usbh_edpt_xfer(daddr, s->ep_addr, s->ep_buf, count), 0 );
TU_ASSERT( usbh_edpt_xfer(s->daddr, s->ep_addr, s->ep_buf, count), 0 );
return count;
}else
{
@ -115,93 +82,28 @@ uint32_t tu_edpt_stream_write_xfer(uint8_t daddr, tu_edpt_stream_t* s)
// Note: data is dropped if terminal is not connected
//usbd_edpt_release(rhport, p_cdc->ep_in);
usbh_edpt_release(daddr, s->ep_addr);
usbh_edpt_release(s->daddr, s->ep_addr);
return 0;
}
}
uint32_t tu_edpt_stream_write(uint8_t daddr, tu_edpt_stream_t* s, void const *buffer, uint32_t bufsize)
uint32_t tu_edpt_stream_write(tu_edpt_stream_t* s, void const *buffer, uint32_t bufsize)
{
TU_VERIFY(bufsize); // TODO support ZLP
uint16_t ret = tu_fifo_write_n(&s->ff, buffer, (uint16_t) bufsize);
// flush if queue more than packet size
uint16_t const bulk_packet_size = (tuh_speed_get(daddr) == TUSB_SPEED_HIGH) ? TUSB_EPSIZE_BULK_HS : TUSB_EPSIZE_BULK_FS;
if ( (tu_fifo_count(&s->ff) >= bulk_packet_size)
/* || ((CFG_TUD_CDC_TX_BUFSIZE < BULK_PACKET_SIZE) && tu_fifo_full(&p_cdc->tx_ff)) */ )
// flush if fifo has more than packet size or
// in rare case: fifo depth is configured too small (which never reach packet size)
uint16_t const bulk_packet_size = (s->ep_speed == TUSB_SPEED_HIGH) ? TUSB_EPSIZE_BULK_HS : TUSB_EPSIZE_BULK_FS;
if ( (tu_fifo_count(&s->ff) >= bulk_packet_size) || ( tu_fifo_depth(&s->ff) < bulk_packet_size) )
{
tu_edpt_stream_write_xfer(daddr, s);
tu_edpt_stream_write_xfer(s);
}
return ret;
}
void tu_edpt_stream_read_xfer_complete(tu_edpt_stream_t* s, uint32_t xferred_bytes)
{
tu_fifo_write_n(&s->ff, s->ep_buf, (uint16_t) xferred_bytes);
}
uint32_t tu_edpt_stream_read_xfer(uint8_t daddr, tu_edpt_stream_t* s)
{
uint16_t available = tu_fifo_remaining(&s->ff);
// Prepare for incoming data but only allow what we can store in the ring buffer.
// TODO Actually we can still carry out the transfer, keeping count of received bytes
// and slowly move it to the FIFO when read().
// This pre-check reduces endpoint claiming
uint16_t const bulk_packet_size = (tuh_speed_get(daddr) == TUSB_SPEED_HIGH) ? TUSB_EPSIZE_BULK_HS : TUSB_EPSIZE_BULK_FS;
TU_VERIFY(available >= bulk_packet_size);
// claim endpoint
TU_VERIFY(usbh_edpt_claim(daddr, s->ep_addr), 0);
// fifo can be changed before endpoint is claimed
available = tu_fifo_remaining(&s->ff);
if ( available >= bulk_packet_size )
{
// multiple of packet size limit by ep bufsize
uint16_t count = (uint16_t) (available & (bulk_packet_size -1));
count = tu_min16(count, s->ep_bufsize);
TU_ASSERT( usbh_edpt_xfer(daddr, s->ep_addr, s->ep_buf, count), 0 );
return count;
}else
{
// Release endpoint since we don't make any transfer
usbh_edpt_release(daddr, s->ep_addr);
return 0;
}
}
uint32_t tu_edpt_stream_read(uint8_t daddr, tu_edpt_stream_t* s, void* buffer, uint32_t bufsize)
{
uint32_t num_read = tu_fifo_read_n(&s->ff, buffer, (uint16_t) bufsize);
tu_edpt_stream_read_xfer(daddr, s);
return num_read;
}
uint32_t tu_edpt_stream_read_available(tu_edpt_stream_t* s)
{
return (uint32_t) tu_fifo_count(&s->ff);
}
uint32_t tu_edpt_stream_write_available(tu_edpt_stream_t* s)
{
return (uint32_t) tu_fifo_remaining(&s->ff);
}
bool tu_edpt_stream_read_clear(uint8_t daddr, tu_edpt_stream_t* s)
{
bool ret = tu_fifo_clear(&s->ff);
tu_edpt_stream_read_xfer(daddr, s);
return ret;
}
bool tu_edpt_stream_write_clear(tu_edpt_stream_t* s)
{
return tu_fifo_clear(&s->ff);
}
typedef struct {
uint8_t daddr;
uint8_t bInterfaceNumber;
@ -326,7 +228,7 @@ uint32_t tuh_cdc_write(uint8_t idx, void const* buffer, uint32_t bufsize)
cdch_interface_t* p_cdc = get_itf(idx);
TU_VERIFY(p_cdc);
return tu_edpt_stream_write(p_cdc->daddr, &p_cdc->stream.tx, buffer, bufsize);
return tu_edpt_stream_write(&p_cdc->stream.tx, buffer, bufsize);
}
uint32_t tuh_cdc_write_flush(uint8_t idx)
@ -334,7 +236,7 @@ uint32_t tuh_cdc_write_flush(uint8_t idx)
cdch_interface_t* p_cdc = get_itf(idx);
TU_VERIFY(p_cdc);
return tu_edpt_stream_write_xfer(p_cdc->daddr, &p_cdc->stream.tx);
return tu_edpt_stream_write_xfer(&p_cdc->stream.tx);
}
bool tuh_cdc_write_clear(uint8_t idx)
@ -342,7 +244,7 @@ bool tuh_cdc_write_clear(uint8_t idx)
cdch_interface_t* p_cdc = get_itf(idx);
TU_VERIFY(p_cdc);
return tu_edpt_stream_write_clear(&p_cdc->stream.tx);
return tu_edpt_stream_clear(&p_cdc->stream.tx);
}
uint32_t tuh_cdc_write_available(uint8_t idx)
@ -358,7 +260,7 @@ uint32_t tuh_cdc_read (uint8_t idx, void* buffer, uint32_t bufsize)
cdch_interface_t* p_cdc = get_itf(idx);
TU_VERIFY(p_cdc);
return tu_edpt_stream_read(p_cdc->daddr, &p_cdc->stream.rx, buffer, bufsize);
return tu_edpt_stream_read(&p_cdc->stream.rx, buffer, bufsize);
}
uint32_t tuh_cdc_read_available(uint8_t idx)
@ -374,7 +276,9 @@ bool tuh_cdc_read_clear (uint8_t idx)
cdch_interface_t* p_cdc = get_itf(idx);
TU_VERIFY(p_cdc);
return tu_edpt_stream_read_clear(p_cdc->daddr, &p_cdc->stream.rx);
bool ret = tu_edpt_stream_clear(&p_cdc->stream.rx);
tu_edpt_stream_read_xfer(&p_cdc->stream.rx);
return ret;
}
//--------------------------------------------------------------------+
@ -452,13 +356,13 @@ void cdch_init(void)
{
cdch_interface_t* p_cdc = &cdch_data[i];
tu_edpt_stream_init(&p_cdc->stream.tx, true, false,
p_cdc->stream.tx_ff_buf, CFG_TUH_CDC_TX_BUFSIZE,
p_cdc->stream.tx_ep_buf, CFG_TUH_CDC_TX_EPSIZE);
tu_edpt_stream_init(&p_cdc->stream.tx, true, true, false,
p_cdc->stream.tx_ff_buf, CFG_TUH_CDC_TX_BUFSIZE,
p_cdc->stream.tx_ep_buf, CFG_TUH_CDC_TX_EPSIZE);
tu_edpt_stream_init(&p_cdc->stream.rx, false, false,
p_cdc->stream.rx_ff_buf, CFG_TUH_CDC_RX_BUFSIZE,
p_cdc->stream.rx_ep_buf, CFG_TUH_CDC_RX_EPSIZE);
tu_edpt_stream_init(&p_cdc->stream.rx, true, false, false,
p_cdc->stream.rx_ff_buf, CFG_TUH_CDC_RX_BUFSIZE,
p_cdc->stream.rx_ep_buf, CFG_TUH_CDC_RX_EPSIZE);
}
}
@ -475,8 +379,6 @@ void cdch_close(uint8_t daddr)
//tu_memclr(p_cdc, sizeof(cdch_interface_t));
p_cdc->daddr = 0;
p_cdc->bInterfaceNumber = 0;
tu_edpt_stream_clear(&p_cdc->stream.tx);
tu_edpt_stream_clear(&p_cdc->stream.rx);
}
}
}
@ -495,23 +397,22 @@ bool cdch_xfer_cb(uint8_t daddr, uint8_t ep_addr, xfer_result_t event, uint32_t
// invoke tx complete callback to possibly refill tx fifo
if (tuh_cdc_tx_complete_cb) tuh_cdc_tx_complete_cb(idx);
if ( 0 == tu_edpt_stream_write_xfer(daddr, &p_cdc->stream.tx) )
if ( 0 == tu_edpt_stream_write_xfer(&p_cdc->stream.tx) )
{
// If there is no data left, a ZLP should be sent if needed
// xferred_bytes is multiple of EP Packet size and not zero
tu_edpt_stream_write_zlp_if_needed(daddr, &p_cdc->stream.tx, xferred_bytes);
tu_edpt_stream_write_zlp_if_needed(&p_cdc->stream.tx, xferred_bytes);
}
}
else if ( ep_addr == p_cdc->stream.rx.ep_addr )
{
// skip if ZLP
if (xferred_bytes) tu_edpt_stream_read_xfer_complete(&p_cdc->stream.rx, xferred_bytes);
tu_edpt_stream_read_xfer_complete(&p_cdc->stream.rx, xferred_bytes);
// invoke receive callback
if (tuh_cdc_rx_cb) tuh_cdc_rx_cb(idx);
// prepare for next transfer if needed
tu_edpt_stream_read_xfer(daddr, &p_cdc->stream.rx);
tu_edpt_stream_read_xfer(&p_cdc->stream.rx);
}else if ( ep_addr == p_cdc->ep_notif )
{
// TODO handle notification endpoint
@ -527,7 +428,7 @@ bool cdch_xfer_cb(uint8_t daddr, uint8_t ep_addr, xfer_result_t event, uint32_t
// Enumeration
//--------------------------------------------------------------------+
bool cdch_open(uint8_t rhport, uint8_t dev_addr, tusb_desc_interface_t const *itf_desc, uint16_t max_len)
bool cdch_open(uint8_t rhport, uint8_t daddr, tusb_desc_interface_t const *itf_desc, uint16_t max_len)
{
(void) rhport;
@ -542,7 +443,7 @@ bool cdch_open(uint8_t rhport, uint8_t dev_addr, tusb_desc_interface_t const *it
cdch_interface_t * p_cdc = find_new_itf();
TU_VERIFY(p_cdc);
p_cdc->daddr = dev_addr;
p_cdc->daddr = daddr;
p_cdc->bInterfaceNumber = itf_desc->bInterfaceNumber;
p_cdc->bInterfaceSubClass = itf_desc->bInterfaceSubClass;
p_cdc->bInterfaceProtocol = itf_desc->bInterfaceProtocol;
@ -569,7 +470,7 @@ bool cdch_open(uint8_t rhport, uint8_t dev_addr, tusb_desc_interface_t const *it
TU_ASSERT(TUSB_DESC_ENDPOINT == tu_desc_type(p_desc));
tusb_desc_endpoint_t const * desc_ep = (tusb_desc_endpoint_t const *) p_desc;
TU_ASSERT( tuh_edpt_open(dev_addr, desc_ep) );
TU_ASSERT( tuh_edpt_open(daddr, desc_ep) );
p_cdc->ep_notif = desc_ep->bEndpointAddress;
p_desc = tu_desc_next(p_desc);
@ -589,14 +490,14 @@ bool cdch_open(uint8_t rhport, uint8_t dev_addr, tusb_desc_interface_t const *it
TU_ASSERT(TUSB_DESC_ENDPOINT == desc_ep->bDescriptorType &&
TUSB_XFER_BULK == desc_ep->bmAttributes.xfer);
TU_ASSERT(tuh_edpt_open(dev_addr, desc_ep));
TU_ASSERT(tuh_edpt_open(daddr, desc_ep));
if ( tu_edpt_dir(desc_ep->bEndpointAddress) == TUSB_DIR_IN )
{
p_cdc->stream.rx.ep_addr = desc_ep->bEndpointAddress;
tu_edpt_stream_open(&p_cdc->stream.rx, daddr, desc_ep);
}else
{
p_cdc->stream.tx.ep_addr = desc_ep->bEndpointAddress;
tu_edpt_stream_open(&p_cdc->stream.tx, daddr, desc_ep);
}
p_desc = tu_desc_next(p_desc);
@ -616,7 +517,7 @@ static void config_cdc_complete(uint8_t daddr, uint8_t itf_num)
// Prepare for incoming data
cdch_interface_t* p_cdc = get_itf(idx);
tu_edpt_stream_read_xfer(daddr, &p_cdc->stream.rx);
tu_edpt_stream_read_xfer(&p_cdc->stream.rx);
}
// notify usbh that driver enumeration is complete

92
src/common/tusb_private.h
View File

@ -28,6 +28,8 @@
#ifndef _TUSB_PRIVATE_H_
#define _TUSB_PRIVATE_H_
// Internal Helper used by Host and Device Stack
#ifdef __cplusplus
extern "C" {
#endif
@ -39,8 +41,31 @@ typedef struct TU_ATTR_PACKED
volatile uint8_t claimed : 1;
}tu_edpt_state_t;
typedef struct {
bool is_host; // host or device most
union {
uint8_t daddr;
uint8_t rhport;
uint8_t hwid;
};
uint8_t ep_addr;
uint8_t ep_speed;
uint16_t ep_packetsize;
uint16_t ep_bufsize;
// TODO xfer_fifo can skip this buffer
uint8_t* ep_buf;
tu_fifo_t ff;
// mutex: read if ep rx, write if e tx
OSAL_MUTEX_DEF(ff_mutex);
}tu_edpt_stream_t;
//--------------------------------------------------------------------+
// Internal Helper used by Host and Device Stack
// Endpoint
//--------------------------------------------------------------------+
// Check if endpoint descriptor is valid per USB specs
@ -58,6 +83,71 @@ bool tu_edpt_claim(tu_edpt_state_t* ep_state, osal_mutex_t mutex);
// Release an endpoint with provided mutex
bool tu_edpt_release(tu_edpt_state_t* ep_state, osal_mutex_t mutex);
//--------------------------------------------------------------------+
// Endpoint Stream
//--------------------------------------------------------------------+
// Init an stream, should only called once
bool tu_edpt_stream_init(tu_edpt_stream_t* s, bool is_host, bool is_tx, bool overwritable,
void* ff_buf, uint16_t ff_bufsize, uint8_t* ep_buf, uint16_t ep_bufsize);
// Open an stream for an endpoint
// hwid is either device address (host mode) or rhport (device mode)
TU_ATTR_ALWAYS_INLINE static inline
void tu_edpt_stream_open(tu_edpt_stream_t* s, uint8_t hwid, tusb_desc_endpoint_t const *desc_ep)
{
tu_fifo_clear(&s->ff);
s->hwid = hwid;
s->ep_addr = desc_ep->bEndpointAddress;
s->ep_packetsize = tu_edpt_packet_size(desc_ep);
}
// Clear fifo
TU_ATTR_ALWAYS_INLINE static inline
bool tu_edpt_stream_clear(tu_edpt_stream_t* s)
{
return tu_fifo_clear(&s->ff);
}
//------------- Write -------------//
// Write to stream
uint32_t tu_edpt_stream_write(tu_edpt_stream_t* s, void const *buffer, uint32_t bufsize);
// Start an usb transfer if endpoint is not busy
uint32_t tu_edpt_stream_write_xfer(tu_edpt_stream_t* s);
// Get the number of bytes available for writing
TU_ATTR_ALWAYS_INLINE static inline
uint32_t tu_edpt_stream_write_available(tu_edpt_stream_t* s)
{
return (uint32_t) tu_fifo_remaining(&s->ff);
}
//------------- Read -------------//
// Read from stream
uint32_t tu_edpt_stream_read(tu_edpt_stream_t* s, void* buffer, uint32_t bufsize);
// Start an usb transfer if endpoint is not busy
uint32_t tu_edpt_stream_read_xfer(tu_edpt_stream_t* s);
// Must be called in the transfer complete callback
TU_ATTR_ALWAYS_INLINE static inline
void tu_edpt_stream_read_xfer_complete(tu_edpt_stream_t* s, uint32_t xferred_bytes)
{
tu_fifo_write_n(&s->ff, s->ep_buf, (uint16_t) xferred_bytes);
}
// Get the number of bytes available for reading
TU_ATTR_ALWAYS_INLINE static inline
uint32_t tu_edpt_stream_read_available(tu_edpt_stream_t* s)
{
return (uint32_t) tu_fifo_count(&s->ff);
}
#ifdef __cplusplus
}
#endif

1
src/host/usbh.c
View File

@ -30,7 +30,6 @@
#include "host/hcd.h"
#include "tusb.h"
#include "common/tusb_private.h"
#include "host/usbh_classdriver.h"
#include "hub.h"

1
src/host/usbh_classdriver.h
View File

@ -29,6 +29,7 @@
#include "osal/osal.h"
#include "common/tusb_fifo.h"
#include "common/tusb_private.h"
#ifdef __cplusplus
extern "C" {

112
src/tusb.c
View File

@ -31,11 +31,18 @@
#include "tusb.h"
#include "common/tusb_private.h"
// TODO clean up
#if CFG_TUD_ENABLED
#include "device/usbd_pvt.h"
#endif
#if CFG_TUH_ENABLED
#include "host/usbh_classdriver.h"
#endif
//--------------------------------------------------------------------+
// Public API
//--------------------------------------------------------------------+
bool tusb_init(void)
{
#if CFG_TUD_ENABLED && defined(TUD_OPT_RHPORT)
@ -67,7 +74,7 @@ bool tusb_inited(void)
}
//--------------------------------------------------------------------+
// Internal Helper for both Host and Device stack
// Endpoint Helper for both Host and Device stack
//--------------------------------------------------------------------+
bool tu_edpt_claim(tu_edpt_state_t* ep_state, osal_mutex_t mutex)
@ -196,9 +203,104 @@ uint16_t tu_desc_get_interface_total_len(tusb_desc_interface_t const* desc_itf,
return len;
}
/*------------------------------------------------------------------*/
/* Debug
*------------------------------------------------------------------*/
//--------------------------------------------------------------------+
// Endpoint Stream Helper for both Host and Device stack
//--------------------------------------------------------------------+
bool tu_edpt_stream_init(tu_edpt_stream_t* s, bool is_host, bool is_tx, bool overwritable,
void* ff_buf, uint16_t ff_bufsize, uint8_t* ep_buf, uint16_t ep_bufsize)
{
osal_mutex_t new_mutex = osal_mutex_create(&s->ff_mutex);
(void) new_mutex;
(void) is_tx;
s->is_host = is_host;
tu_fifo_config(&s->ff, ff_buf, ff_bufsize, 1, overwritable);
tu_fifo_config_mutex(&s->ff, is_tx ? new_mutex : NULL, is_tx ? NULL : new_mutex);
s->ep_buf = ep_buf;
s->ep_bufsize = ep_bufsize;
return true;
}
//------------- Stream Write -------------//
//------------- Stream Read -------------//
uint32_t tu_edpt_stream_read_xfer(tu_edpt_stream_t* s)
{
uint16_t available = tu_fifo_remaining(&s->ff);
// Prepare for incoming data but only allow what we can store in the ring buffer.
// TODO Actually we can still carry out the transfer, keeping count of received bytes
// and slowly move it to the FIFO when read().
// This pre-check reduces endpoint claiming
TU_VERIFY(available >= s->ep_packetsize);
// claim endpoint
if (s->is_host)
{
#if CFG_TUH_ENABLED
TU_VERIFY(usbh_edpt_claim(s->daddr, s->ep_addr), 0);
#endif
}else
{
#if CFG_TUD_ENABLED
TU_VERIFY(usbd_edpt_claim(s->rhport, s->ep_addr), 0);
#endif
}
// get available again since fifo can be changed before endpoint is claimed
available = tu_fifo_remaining(&s->ff);
if ( available >= s->ep_packetsize )
{
// multiple of packet size limit by ep bufsize
uint16_t count = (uint16_t) (available & (s->ep_packetsize -1));
count = tu_min16(count, s->ep_bufsize);
if (s->is_host)
{
#if CFG_TUH_ENABLED
TU_ASSERT( usbh_edpt_xfer(s->daddr, s->ep_addr, s->ep_buf, count), 0 );
#endif
}else
{
#if CFG_TUD_ENABLED
TU_ASSERT( usbd_edpt_xfer(s->rhport, s->ep_addr, s->ep_buf, count), 0 );
#endif
}
return count;
}else
{
// Release endpoint since we don't make any transfer
if (s->is_host)
{
#if CFG_TUH_ENABLED
usbh_edpt_release(s->daddr, s->ep_addr);
#endif
}else
{
#if CFG_TUD_ENABLED
usbd_edpt_release(s->rhport, s->ep_addr);
#endif
}
return 0;
}
}
uint32_t tu_edpt_stream_read(tu_edpt_stream_t* s, void* buffer, uint32_t bufsize)
{
uint32_t num_read = tu_fifo_read_n(&s->ff, buffer, (uint16_t) bufsize);
tu_edpt_stream_read_xfer(s);
return num_read;
}
//--------------------------------------------------------------------+
// Debug
//--------------------------------------------------------------------+
#if CFG_TUSB_DEBUG
#include <ctype.h>