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Merge branch 'master' into add-app-driver

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This commit is contained in:
hathach
2020-08-07 12:13:13 +07:00
parent c14c0cfc9f c682c30fa6
commit 9df8057702
205 changed files with 31347 additions and 1184 deletions
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15
src/device/dcd.h
View File

@@ -60,11 +60,17 @@ typedef struct TU_ATTR_ALIGNED(4)
uint8_t rhport;
uint8_t event_id;
union {
// USBD_EVT_SETUP_RECEIVED
union
{
// BUS RESET
struct {
tusb_speed_t speed;
} bus_reset;
// SETUP_RECEIVED
tusb_control_request_t setup_received;
// USBD_EVT_XFER_COMPLETE
// XFER_COMPLETE
struct {
uint8_t ep_addr;
uint8_t result;
@@ -143,6 +149,9 @@ extern void dcd_event_handler(dcd_event_t const * event, bool in_isr);
// helper to send bus signal event
extern void dcd_event_bus_signal (uint8_t rhport, dcd_eventid_t eid, bool in_isr);
// helper to send bus reset event
extern void dcd_event_bus_reset (uint8_t rhport, tusb_speed_t speed, bool in_isr);
// helper to send setup received
extern void dcd_event_setup_received(uint8_t rhport, uint8_t const * setup, bool in_isr);

168
src/device/usbd.c
View File

@@ -40,7 +40,8 @@
//--------------------------------------------------------------------+
// Device Data
//--------------------------------------------------------------------+
typedef struct {
typedef struct
{
struct TU_ATTR_PACKED
{
volatile uint8_t connected : 1;
@@ -53,6 +54,8 @@ typedef struct {
uint8_t self_powered : 1; // configuration descriptor's attribute
};
uint8_t speed;
uint8_t itf2drv[16]; // map interface number to driver (0xff is invalid)
uint8_t ep2drv[8][2]; // map endpoint to driver ( 0xff is invalid )
@@ -185,6 +188,19 @@ static usbd_class_driver_t const _usbd_driver[] =
.sof = NULL,
},
#endif
#if CFG_TUD_BTH
{
DRIVER_NAME("BTH")
.init = btd_init,
.reset = btd_reset,
.open = btd_open,
.control_request = btd_control_request,
.control_complete = btd_control_complete,
.xfer_cb = btd_xfer_cb,
.sof = NULL
},
#endif
};
enum { USBD_CLASS_DRIVER_COUNT = TU_ARRAY_SIZE(_usbd_driver) };
@@ -288,6 +304,11 @@ void usbd_driver_print_control_complete_name(bool (*control_complete) (uint8_t,
//--------------------------------------------------------------------+
// Application API
//--------------------------------------------------------------------+
tusb_speed_t tud_speed_get(void)
{
return (tusb_speed_t) _usbd_dev.speed;
}
bool tud_mounted(void)
{
return _usbd_dev.configured;
@@ -335,7 +356,6 @@ bool tud_init (void)
// Init device controller driver
dcd_init(TUD_OPT_RHPORT);
tud_connect();
dcd_int_enable(TUD_OPT_RHPORT);
return true;
@@ -356,6 +376,14 @@ static void usbd_reset(uint8_t rhport)
}
}
bool tud_task_event_ready(void)
{
// Skip if stack is not initialized
if ( !tusb_inited() ) return false;
return !osal_queue_empty(_usbd_q);
}
/* USB Device Driver task
* This top level thread manages all device controller event and delegates events to class-specific drivers.
* This should be called periodically within the mainloop or rtos thread.
@@ -386,16 +414,21 @@ void tud_task (void)
if ( !osal_queue_receive(_usbd_q, &event) ) return;
TU_LOG2("USBD %s", event.event_id < DCD_EVENT_COUNT ? _usbd_event_str[event.event_id] : "CORRUPTED");
TU_LOG2("%s", (event.event_id != DCD_EVENT_XFER_COMPLETE && event.event_id != DCD_EVENT_SETUP_RECEIVED) ? "\r\n" : " ");
#if CFG_TUSB_DEBUG >= 2
if (event.event_id == DCD_EVENT_SETUP_RECEIVED) TU_LOG2("\r\n"); // extra line for setup
TU_LOG2("USBD %s ", event.event_id < DCD_EVENT_COUNT ? _usbd_event_str[event.event_id] : "CORRUPTED");
#endif
switch ( event.event_id )
{
case DCD_EVENT_BUS_RESET:
TU_LOG2("\r\n");
usbd_reset(event.rhport);
_usbd_dev.speed = event.bus_reset.speed;
break;
case DCD_EVENT_UNPLUGGED:
TU_LOG2("\r\n");
usbd_reset(event.rhport);
// invoke callback
@@ -433,7 +466,7 @@ void tud_task (void)
if ( 0 == epnum )
{
usbd_control_xfer_cb(event.rhport, ep_addr, event.xfer_complete.result, event.xfer_complete.len);
usbd_control_xfer_cb(event.rhport, ep_addr, (xfer_result_t)event.xfer_complete.result, event.xfer_complete.len);
}
else
{
@@ -447,14 +480,17 @@ void tud_task (void)
break;
case DCD_EVENT_SUSPEND:
TU_LOG2("\r\n");
if (tud_suspend_cb) tud_suspend_cb(_usbd_dev.remote_wakeup_en);
break;
case DCD_EVENT_RESUME:
TU_LOG2("\r\n");
if (tud_resume_cb) tud_resume_cb();
break;
case DCD_EVENT_SOF:
TU_LOG2("\r\n");
for ( uint8_t i = 0; i < TOTAL_DRIVER_COUNT; i++ )
{
usbd_class_driver_t const * driver = get_driver(i);
@@ -463,6 +499,7 @@ void tud_task (void)
break;
case USBD_EVENT_FUNC_CALL:
TU_LOG2("\r\n");
if ( event.func_call.func ) event.func_call.func(event.func_call.param);
break;
@@ -514,6 +551,17 @@ static bool process_control_request(uint8_t rhport, tusb_control_request_t const
{
//------------- Device Requests e.g in enumeration -------------//
case TUSB_REQ_RCPT_DEVICE:
if ( TUSB_REQ_TYPE_CLASS == p_request->bmRequestType_bit.type )
{
uint8_t const itf = tu_u16_low(p_request->wIndex);
TU_VERIFY(itf < TU_ARRAY_SIZE(_usbd_dev.itf2drv));
usbd_class_driver_t const * driver = get_driver(_usbd_dev.itf2drv[itf]);
TU_VERIFY(driver);
// forward to class driver: "non-STD request to Interface"
return invoke_class_control(rhport, driver, p_request);
}
if ( TUSB_REQ_TYPE_STANDARD != p_request->bmRequestType_bit.type )
{
// Non standard request is not supported
@@ -595,7 +643,7 @@ static bool process_control_request(uint8_t rhport, tusb_control_request_t const
uint8_t const itf = tu_u16_low(p_request->wIndex);
TU_VERIFY(itf < TU_ARRAY_SIZE(_usbd_dev.itf2drv));
usbd_class_driver_t const * driver = get_driver(_usbd_dev.itf2drv[itf]);
usbd_class_driver_t const * driver = get_driver(_usbd_dev.itf2drv[itf]);
TU_VERIFY(driver);
// all requests to Interface (STD or Class) is forwarded to class driver.
@@ -719,16 +767,20 @@ static bool process_set_config(uint8_t rhport, uint8_t cfg_num)
TU_ASSERT( TUSB_DESC_INTERFACE == tu_desc_type(p_desc) );
tusb_desc_interface_t const * desc_itf = (tusb_desc_interface_t const*) p_desc;
uint8_t drv_id;
uint16_t drv_len;
uint16_t const remaining_len = desc_end-p_desc;
uint8_t drv_id;
for (drv_id = 0; drv_id < TOTAL_DRIVER_COUNT; drv_id++)
{
usbd_class_driver_t const *driver = get_driver(drv_id);
drv_len = 0;
if ( driver->open(rhport, desc_itf, &drv_len) )
uint16_t const drv_len = driver->open(rhport, desc_itf, remaining_len);
if ( drv_len > 0 )
{
// Open successfully, check if length is correct
TU_ASSERT( sizeof(tusb_desc_interface_t) <= drv_len && drv_len <= remaining_len);
// Interface number must not be used already
TU_ASSERT(DRVID_INVALID == _usbd_dev.itf2drv[desc_itf->bInterfaceNumber]);
@@ -738,11 +790,9 @@ static bool process_set_config(uint8_t rhport, uint8_t cfg_num)
// If IAD exist, assign all interfaces to the same driver
if (desc_itf_assoc)
{
// IAD's first interface number and class/subclass/protocol should match with opened interface
TU_ASSERT(desc_itf_assoc->bFirstInterface == desc_itf->bInterfaceNumber &&
desc_itf_assoc->bFunctionClass == desc_itf->bInterfaceClass &&
desc_itf_assoc->bFunctionSubClass == desc_itf->bInterfaceSubClass &&
desc_itf_assoc->bFunctionProtocol == desc_itf->bInterfaceProtocol);
// IAD's first interface number and class should match with opened interface
TU_ASSERT(desc_itf_assoc->bFirstInterface == desc_itf->bInterfaceNumber &&
desc_itf_assoc->bFunctionClass == desc_itf->bInterfaceClass);
for(uint8_t i=1; i<desc_itf_assoc->bInterfaceCount; i++)
{
@@ -750,16 +800,16 @@ static bool process_set_config(uint8_t rhport, uint8_t cfg_num)
}
}
mark_interface_endpoint(_usbd_dev.ep2drv, p_desc, drv_len, drv_id); // TODO refactor
p_desc += drv_len; // next interface
break;
}
}
// Assert if cannot find supported driver
TU_ASSERT( drv_id < TOTAL_DRIVER_COUNT && drv_len >= sizeof(tusb_desc_interface_t) );
mark_interface_endpoint(_usbd_dev.ep2drv, p_desc, drv_len, drv_id); // TODO refactor
p_desc += drv_len; // next interface
// Failed if cannot find supported driver
TU_ASSERT(drv_id < TOTAL_DRIVER_COUNT);
}
// invoke callback
@@ -823,8 +873,10 @@ static bool process_get_descriptor(uint8_t rhport, tusb_control_request_t const
if (!tud_descriptor_bos_cb) return false;
tusb_desc_bos_t const* desc_bos = (tusb_desc_bos_t const*) tud_descriptor_bos_cb();
uint16_t total_len;
memcpy(&total_len, &desc_bos->wTotalLength, 2); // possibly mis-aligned memory
// Use offsetof to avoid pointer to the odd/misaligned address
memcpy(&total_len, (uint8_t*) desc_bos + offsetof(tusb_desc_bos_t, wTotalLength), 2);
return tud_control_xfer(rhport, p_request, (void*) desc_bos, total_len);
}
@@ -838,7 +890,8 @@ static bool process_get_descriptor(uint8_t rhport, tusb_control_request_t const
TU_ASSERT(desc_config);
uint16_t total_len;
memcpy(&total_len, &desc_config->wTotalLength, 2); // possibly mis-aligned memory
// Use offsetof to avoid pointer to the odd/misaligned address
memcpy(&total_len, (uint8_t*) desc_config + offsetof(tusb_desc_configuration_t, wTotalLength), 2);
return tud_control_xfer(rhport, p_request, (void*) desc_config, total_len);
}
@@ -848,34 +901,41 @@ static bool process_get_descriptor(uint8_t rhport, tusb_control_request_t const
TU_LOG2(" String[%u]\r\n", desc_index);
// String Descriptor always uses the desc set from user
if ( desc_index == 0xEE )
{
// The 0xEE index string is a Microsoft OS Descriptors.
// https://docs.microsoft.com/en-us/windows-hardware/drivers/usbcon/microsoft-defined-usb-descriptors
return false;
}
else
{
uint8_t const* desc_str = (uint8_t const*) tud_descriptor_string_cb(desc_index, p_request->wIndex);
TU_ASSERT(desc_str);
uint8_t const* desc_str = (uint8_t const*) tud_descriptor_string_cb(desc_index, p_request->wIndex);
TU_VERIFY(desc_str);
// first byte of descriptor is its size
return tud_control_xfer(rhport, p_request, (void*) desc_str, desc_str[0]);
}
// first byte of descriptor is its size
return tud_control_xfer(rhport, p_request, (void*) desc_str, desc_str[0]);
break;
case TUSB_DESC_DEVICE_QUALIFIER:
TU_LOG2(" Device Qualifier\r\n");
// TODO If not highspeed capable stall this request otherwise
// return the descriptor that could work in highspeed
return false;
// Host sends this request to ask why our device with USB BCD from 2.0
// but is running at Full/Low Speed. If not highspeed capable stall this request,
// otherwise return the descriptor that could work in highspeed mode
if ( tud_descriptor_device_qualifier_cb )
{
uint8_t const* desc_qualifier = tud_descriptor_device_qualifier_cb();
TU_ASSERT(desc_qualifier);
// first byte of descriptor is its size
return tud_control_xfer(rhport, p_request, (void*) desc_qualifier, desc_qualifier[0]);
}else
{
return false;
}
break;
case TUSB_DESC_OTHER_SPEED_CONFIG:
TU_LOG2(" Other Speed Configuration\r\n");
// After Device Qualifier descriptor is received host will ask for this descriptor
return false; // not supported
break;
default: return false;
}
return true;
}
//--------------------------------------------------------------------+
@@ -925,7 +985,14 @@ void dcd_event_handler(dcd_event_t const * event, bool in_isr)
void dcd_event_bus_signal (uint8_t rhport, dcd_eventid_t eid, bool in_isr)
{
dcd_event_t event = { .rhport = rhport, .event_id = eid, };
dcd_event_t event = { .rhport = rhport, .event_id = eid };
dcd_event_handler(&event, in_isr);
}
void dcd_event_bus_reset (uint8_t rhport, tusb_speed_t speed, bool in_isr)
{
dcd_event_t event = { .rhport = rhport, .event_id = DCD_EVENT_BUS_RESET };
event.bus_reset.speed = speed;
dcd_event_handler(&event, in_isr);
}
@@ -1009,12 +1076,21 @@ bool usbd_edpt_xfer(uint8_t rhport, uint8_t ep_addr, uint8_t * buffer, uint16_t
TU_LOG2(" Queue EP %02X with %u bytes ... ", ep_addr, total_bytes);
TU_VERIFY( dcd_edpt_xfer(rhport, ep_addr, buffer, total_bytes) );
// Set busy first since the actual transfer can be complete before dcd_edpt_xfer() could return
// and usbd task can preempt and clear the busy
_usbd_dev.ep_status[epnum][dir].busy = true;
TU_LOG2("OK\r\n");
return true;
if ( dcd_edpt_xfer(rhport, ep_addr, buffer, total_bytes) )
{
TU_LOG2("OK\r\n");
return true;
}else
{
_usbd_dev.ep_status[epnum][dir].busy = false;
TU_LOG2("failed\r\n");
TU_BREAKPOINT();
return false;
}
}
bool usbd_edpt_busy(uint8_t rhport, uint8_t ep_addr)

72
src/device/usbd.h
View File

@@ -42,14 +42,22 @@
//--------------------------------------------------------------------+
// Init device stack
// Note: when using with RTOS, this should be called after scheduler/kernel is started.
// Otherwise it could cause kernel issue since USB IRQ handler does use RTOS queue API.
bool tud_init (void);
// Task function should be called in main/rtos loop
void tud_task (void);
// Check if there is pending events need proccessing by tud_task()
bool tud_task_event_ready(void);
// Interrupt handler, name alias to DCD
#define tud_int_handler dcd_int_handler
// Get current bus speed
tusb_speed_t tud_speed_get(void);
// Check if device is connected and configured
bool tud_mounted(void);
@@ -65,6 +73,8 @@ static inline bool tud_ready(void)
// Remote wake up host, only if suspended and enabled by host
bool tud_remote_wakeup(void);
// Enable pull-up resistor on D+ D-
// Return false on unsupported MCUs
static inline bool tud_disconnect(void)
{
TU_VERIFY(dcd_disconnect);
@@ -72,6 +82,8 @@ static inline bool tud_disconnect(void)
return true;
}
// Disable pull-up resistor on D+ D-
// Return false on unsupported MCUs
static inline bool tud_connect(void)
{
TU_VERIFY(dcd_connect);
@@ -107,6 +119,10 @@ uint8_t const * tud_descriptor_configuration_cb(uint8_t index);
// Application return pointer to descriptor, whose contents must exist long enough for transfer to complete
uint16_t const* tud_descriptor_string_cb(uint8_t index, uint16_t langid);
// Invoked when received GET DEVICE QUALIFIER DESCRIPTOR request
// Application return pointer to descriptor, whose contents must exist long enough for transfer to complete
TU_ATTR_WEAK uint8_t const* tud_descriptor_device_qualifier_cb(void);
// Invoked when device is mounted (configured)
TU_ATTR_WEAK void tud_mount_cb(void);
@@ -122,6 +138,8 @@ TU_ATTR_WEAK void tud_resume_cb(void);
// Invoked when received control request with VENDOR TYPE
TU_ATTR_WEAK bool tud_vendor_control_request_cb(uint8_t rhport, tusb_control_request_t const * request);
// Invoked when vendor control request is complete
TU_ATTR_WEAK bool tud_vendor_control_complete_cb(uint8_t rhport, tusb_control_request_t const * request);
@@ -435,6 +453,60 @@ TU_ATTR_WEAK bool tud_vendor_control_complete_cb(uint8_t rhport, tusb_control_re
/* Endpoint Out */\
7, TUSB_DESC_ENDPOINT, _epout, TUSB_XFER_BULK, U16_TO_U8S_LE(_epsize), 0
//------------- BT Radio -------------//
#define TUD_BT_APP_CLASS (TUSB_CLASS_WIRELESS_CONTROLLER)
#define TUD_BT_APP_SUBCLASS 0x01
#define TUD_BT_PROTOCOL_PRIMARY_CONTROLLER 0x01
#define TUD_BT_PROTOCOL_AMP_CONTROLLER 0x02
#ifndef CFG_TUD_BTH_ISO_ALT_COUNT
#define CFG_TUD_BTH_ISO_ALT_COUNT 0
#endif
// Length of template descriptor: 30 bytes + number of ISO alternatives * 23
#define TUD_BTH_DESC_LEN (9 + 7 + 7 + 7 + (CFG_TUD_BTH_ISO_ALT_COUNT) * (9 + 7 + 7))
/* Primary Interface */
#define TUD_BTH_PRI_ITF(_itfnum, _stridx, _ep_evt, _ep_evt_size, _ep_evt_interval, _ep_in, _ep_out, _ep_size) \
9, TUSB_DESC_INTERFACE, _itfnum, _stridx, 3, TUD_BT_APP_CLASS, TUD_BT_APP_SUBCLASS, TUD_BT_PROTOCOL_PRIMARY_CONTROLLER, 0, \
/* Endpoint In for events */ \
7, TUSB_DESC_ENDPOINT, _ep_evt, TUSB_XFER_INTERRUPT, U16_TO_U8S_LE(_ep_evt_size), _ep_evt_interval, \
/* Endpoint In for ACL data */ \
7, TUSB_DESC_ENDPOINT, _ep_in, TUSB_XFER_BULK, U16_TO_U8S_LE(_ep_size), 1, \
/* Endpoint Out for ACL data */ \
7, TUSB_DESC_ENDPOINT, _ep_out, TUSB_XFER_BULK, U16_TO_U8S_LE(_ep_size), 1
#define TUD_BTH_ISO_ITF(_itfnum, _alt, _ep_in, _ep_out, _n) ,\
/* Interface with 2 endpoints */ \
9, TUSB_DESC_INTERFACE, _itfnum, _alt, 2, TUD_BT_APP_CLASS, TUD_BT_APP_SUBCLASS, TUD_BT_PROTOCOL_PRIMARY_CONTROLLER, 0, \
/* Isochronous endpoints */ \
7, TUSB_DESC_ENDPOINT, _ep_in, TUSB_XFER_ISOCHRONOUS, U16_TO_U8S_LE(_n), 1, \
7, TUSB_DESC_ENDPOINT, _ep_out, TUSB_XFER_ISOCHRONOUS, U16_TO_U8S_LE(_n), 1
#define _FIRST(a, ...) a
#define _REST(a, ...) __VA_ARGS__
#define TUD_BTH_ISO_ITF_0(_itfnum, ...)
#define TUD_BTH_ISO_ITF_1(_itfnum, _ep_in, _ep_out, ...) TUD_BTH_ISO_ITF(_itfnum, (CFG_TUD_BTH_ISO_ALT_COUNT) - 1, _ep_in, _ep_out, _FIRST(__VA_ARGS__))
#define TUD_BTH_ISO_ITF_2(_itfnum, _ep_in, _ep_out, ...) TUD_BTH_ISO_ITF(_itfnum, (CFG_TUD_BTH_ISO_ALT_COUNT) - 2, _ep_in, _ep_out, _FIRST(__VA_ARGS__)) \
TUD_BTH_ISO_ITF_1(_itfnum, _ep_in, _ep_out, _REST(__VA_ARGS__))
#define TUD_BTH_ISO_ITF_3(_itfnum, _ep_in, _ep_out, ...) TUD_BTH_ISO_ITF(_itfnum, (CFG_TUD_BTH_ISO_ALT_COUNT) - 3, _ep_in, _ep_out, _FIRST(__VA_ARGS__)) \
TUD_BTH_ISO_ITF_2(_itfnum, _ep_in, _ep_out, _REST(__VA_ARGS__))
#define TUD_BTH_ISO_ITF_4(_itfnum, _ep_in, _ep_out, ...) TUD_BTH_ISO_ITF(_itfnum, (CFG_TUD_BTH_ISO_ALT_COUNT) - 4, _ep_in, _ep_out, _FIRST(__VA_ARGS__)) \
TUD_BTH_ISO_ITF_3(_itfnum, _ep_in, _ep_out, _REST(__VA_ARGS__))
#define TUD_BTH_ISO_ITF_5(_itfnum, _ep_in, _ep_out, ...) TUD_BTH_ISO_ITF(_itfnum, (CFG_TUD_BTH_ISO_ALT_COUNT) - 5, _ep_in, _ep_out, _FIRST(__VA_ARGS__)) \
TUD_BTH_ISO_ITF_4(_itfnum, _ep_in, _ep_out, _REST(__VA_ARGS__))
#define TUD_BTH_ISO_ITF_6(_itfnum, _ep_in, _ep_out, ...) TUD_BTH_ISO_ITF(_itfnum, (CFG_TUD_BTH_ISO_ALT_COUNT) - 6, _ep_in, _ep_out, _FIRST(__VA_ARGS__)) \
TUD_BTH_ISO_ITF_5(_itfnum, _ep_in, _ep_out, _REST(__VA_ARGS__))
#define TUD_BTH_ISO_ITFS(_itfnum, _ep_in, _ep_out, ...) \
TU_XSTRCAT(TUD_BTH_ISO_ITF_, CFG_TUD_BTH_ISO_ALT_COUNT)(_itfnum, _ep_in, _ep_out, __VA_ARGS__)
// BT Primary controller descriptor
// Interface number, string index, attributes, event endpoint, event endpoint size, interval, data in, data out, data endpoint size, iso endpoint sizes
#define TUD_BTH_DESCRIPTOR(_itfnum, _stridx, _ep_evt, _ep_evt_size, _ep_evt_interval, _ep_in, _ep_out, _ep_size,...) \
TUD_BTH_PRI_ITF(_itfnum, _stridx, _ep_evt, _ep_evt_size, _ep_evt_interval, _ep_in, _ep_out, _ep_size) \
TUD_BTH_ISO_ITFS(_itfnum + 1, _ep_in + 1, _ep_out + 1, __VA_ARGS__)
#ifdef __cplusplus
}

5
src/device/usbd_control.c
View File

@@ -32,6 +32,10 @@
#include "device/usbd_pvt.h"
#include "dcd.h"
#if CFG_TUSB_DEBUG >= 2
extern void usbd_driver_print_control_complete_name(bool (*control_complete) (uint8_t, tusb_control_request_t const *));
#endif
enum
{
EDPT_CTRL_OUT = 0x00,
@@ -192,7 +196,6 @@ bool usbd_control_xfer_cb (uint8_t rhport, uint8_t ep_addr, xfer_result_t result
if ( _ctrl_xfer.complete_cb )
{
#if CFG_TUSB_DEBUG >= 2
extern void usbd_driver_print_control_complete_name(bool (*control_complete) (uint8_t, tusb_control_request_t const *));
usbd_driver_print_control_complete_name(_ctrl_xfer.complete_cb);
#endif

18
src/device/usbd_pvt.h
View File

@@ -39,17 +39,17 @@
typedef struct
{
#if CFG_TUSB_DEBUG >= 2
#if CFG_TUSB_DEBUG >= 2
char const* name;
#endif
#endif
void (* init ) (void);
void (* reset ) (uint8_t rhport);
bool (* open ) (uint8_t rhport, tusb_desc_interface_t const * desc_intf, uint16_t* p_length);
bool (* control_request ) (uint8_t rhport, tusb_control_request_t const * request);
bool (* control_complete ) (uint8_t rhport, tusb_control_request_t const * request);
bool (* xfer_cb ) (uint8_t rhport, uint8_t ep_addr, xfer_result_t event, uint32_t xferred_bytes);
void (* sof ) (uint8_t rhport); /* optional */
void (* init ) (void);
void (* reset ) (uint8_t rhport);
uint16_t (* open ) (uint8_t rhport, tusb_desc_interface_t const * desc_intf, uint16_t max_len);
bool (* control_request ) (uint8_t rhport, tusb_control_request_t const * request);
bool (* control_complete ) (uint8_t rhport, tusb_control_request_t const * request);
bool (* xfer_cb ) (uint8_t rhport, uint8_t ep_addr, xfer_result_t event, uint32_t xferred_bytes);
void (* sof ) (uint8_t rhport); /* optional */
} usbd_class_driver_t;
// Invoked when initializing device stack to get additional class drivers.