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make notify API and memory configurable with CFG_TUD_CDC_NOTIFY

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add tud_cdc_n_notify_conn_speed_change()
add tud_cdc_notify_complete_cb()
This commit is contained in:
hathach
2025-07-03 13:42:05 +07:00
parent cf3966efd9
commit 41606a533d
6 changed files with 149 additions and 121 deletions
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13
examples/device/cdc_dual_ports/src/main.c
View File

@@ -102,16 +102,13 @@ void tud_umount_cb(void) {
// USB CDC
//--------------------------------------------------------------------+
static void cdc_task(void) {
uint8_t itf;
for (itf = 0; itf < CFG_TUD_CDC; itf++) {
for (uint8_t itf = 0; itf < CFG_TUD_CDC; itf++) {
// connected() check for DTR bit
// Most but not all terminal client set this when making connection
// if ( tud_cdc_n_connected(itf) )
{
if (tud_cdc_n_available(itf)) {
uint8_t buf[64];
uint32_t count = tud_cdc_n_read(itf, buf, sizeof(buf));
// echo back to both serial ports
@@ -121,11 +118,11 @@ static void cdc_task(void) {
// Press on-board button to send Uart status notification
static uint32_t btn_prev = 0;
static cdc_uart_state_t state = {0};
uint32_t btn = board_button_read();
static cdc_notify_uart_state_t uart_state = { .value = 0 };
const uint32_t btn = board_button_read();
if (!btn_prev && btn) {
state.bTxCarrier ^= 1;
tud_cdc_send_uart_state(state);
uart_state.dsr ^= 1;
tud_cdc_notify_uart_state(&uart_state);
}
btn_prev = btn;
}

2
examples/device/cdc_dual_ports/src/tusb_config.h
View File

@@ -97,6 +97,8 @@
#define CFG_TUD_MIDI 0
#define CFG_TUD_VENDOR 0
#define CFG_TUD_CDC_NOTIFY 1 // Enable use of notification endpoint
// CDC FIFO size of TX and RX
#define CFG_TUD_CDC_RX_BUFSIZE (TUD_OPT_HIGH_SPEED ? 512 : 64)
#define CFG_TUD_CDC_TX_BUFSIZE (TUD_OPT_HIGH_SPEED ? 512 : 64)

47
examples/device/cdc_dual_ports/src/usb_descriptors.c
View File

@@ -130,36 +130,32 @@ enum
#define EPNUM_CDC_1_IN 0x84
#endif
uint8_t const desc_fs_configuration[] =
{
uint8_t const desc_fs_configuration[] = {
// Config number, interface count, string index, total length, attribute, power in mA
TUD_CONFIG_DESCRIPTOR(1, ITF_NUM_TOTAL, 0, CONFIG_TOTAL_LEN, 0x00, 100),
// 1st CDC: Interface number, string index, EP notification address and size, EP data address (out, in) and size.
TUD_CDC_DESCRIPTOR(ITF_NUM_CDC_0, 4, EPNUM_CDC_0_NOTIF, 10, EPNUM_CDC_0_OUT, EPNUM_CDC_0_IN, 64),
TUD_CDC_DESCRIPTOR(ITF_NUM_CDC_0, 4, EPNUM_CDC_0_NOTIF, 16, EPNUM_CDC_0_OUT, EPNUM_CDC_0_IN, 64),
// 2nd CDC: Interface number, string index, EP notification address and size, EP data address (out, in) and size.
TUD_CDC_DESCRIPTOR(ITF_NUM_CDC_1, 4, EPNUM_CDC_1_NOTIF, 10, EPNUM_CDC_1_OUT, EPNUM_CDC_1_IN, 64),
TUD_CDC_DESCRIPTOR(ITF_NUM_CDC_1, 4, EPNUM_CDC_1_NOTIF, 16, EPNUM_CDC_1_OUT, EPNUM_CDC_1_IN, 64),
};
#if TUD_OPT_HIGH_SPEED
// Per USB specs: high speed capable device must report device_qualifier and other_speed_configuration
uint8_t const desc_hs_configuration[] =
{
uint8_t const desc_hs_configuration[] = {
// Config number, interface count, string index, total length, attribute, power in mA
TUD_CONFIG_DESCRIPTOR(1, ITF_NUM_TOTAL, 0, CONFIG_TOTAL_LEN, 0x00, 100),
// 1st CDC: Interface number, string index, EP notification address and size, EP data address (out, in) and size.
TUD_CDC_DESCRIPTOR(ITF_NUM_CDC_0, 4, EPNUM_CDC_0_NOTIF, 10, EPNUM_CDC_0_OUT, EPNUM_CDC_0_IN, 512),
TUD_CDC_DESCRIPTOR(ITF_NUM_CDC_0, 4, EPNUM_CDC_0_NOTIF, 16, EPNUM_CDC_0_OUT, EPNUM_CDC_0_IN, 512),
// 2nd CDC: Interface number, string index, EP notification address and size, EP data address (out, in) and size.
TUD_CDC_DESCRIPTOR(ITF_NUM_CDC_1, 4, EPNUM_CDC_1_NOTIF, 10, EPNUM_CDC_1_OUT, EPNUM_CDC_1_IN, 512),
TUD_CDC_DESCRIPTOR(ITF_NUM_CDC_1, 4, EPNUM_CDC_1_NOTIF, 16, EPNUM_CDC_1_OUT, EPNUM_CDC_1_IN, 512),
};
// device qualifier is mostly similar to device descriptor since we don't change configuration based on speed
tusb_desc_device_qualifier_t const desc_device_qualifier =
{
tusb_desc_device_qualifier_t const desc_device_qualifier = {
.bLength = sizeof(tusb_desc_device_t),
.bDescriptorType = TUSB_DESC_DEVICE,
.bcdUSB = USB_BCD,
@@ -177,34 +173,31 @@ tusb_desc_device_qualifier_t const desc_device_qualifier =
// Application return pointer to descriptor, whose contents must exist long enough for transfer to complete.
// device_qualifier descriptor describes information about a high-speed capable device that would
// change if the device were operating at the other speed. If not highspeed capable stall this request.
uint8_t const* tud_descriptor_device_qualifier_cb(void)
{
return (uint8_t const*) &desc_device_qualifier;
uint8_t const *tud_descriptor_device_qualifier_cb(void) {
return (uint8_t const *) &desc_device_qualifier;
}
// Invoked when received GET OTHER SEED CONFIGURATION DESCRIPTOR request
// Application return pointer to descriptor, whose contents must exist long enough for transfer to complete
// Configuration descriptor in the other speed e.g if high speed then this is for full speed and vice versa
uint8_t const* tud_descriptor_other_speed_configuration_cb(uint8_t index)
{
(void) index; // for multiple configurations
uint8_t const *tud_descriptor_other_speed_configuration_cb(uint8_t index) {
(void) index;// for multiple configurations
// if link speed is high return fullspeed config, and vice versa
return (tud_speed_get() == TUSB_SPEED_HIGH) ? desc_fs_configuration : desc_hs_configuration;
return (tud_speed_get() == TUSB_SPEED_HIGH) ? desc_fs_configuration : desc_hs_configuration;
}
#endif // highspeed
#endif// highspeed
// Invoked when received GET CONFIGURATION DESCRIPTOR
// Application return pointer to descriptor
// Descriptor contents must exist long enough for transfer to complete
uint8_t const * tud_descriptor_configuration_cb(uint8_t index)
{
(void) index; // for multiple configurations
uint8_t const *tud_descriptor_configuration_cb(uint8_t index) {
(void) index;// for multiple configurations
#if TUD_OPT_HIGH_SPEED
// Although we are highspeed, host may be fullspeed.
return (tud_speed_get() == TUSB_SPEED_HIGH) ? desc_hs_configuration : desc_fs_configuration;
return (tud_speed_get() == TUSB_SPEED_HIGH) ? desc_hs_configuration : desc_fs_configuration;
#else
return desc_fs_configuration;
#endif
@@ -223,8 +216,7 @@ enum {
};
// array of pointer to string descriptors
char const *string_desc_arr[] =
{
char const *string_desc_arr[] = {
(const char[]) { 0x09, 0x04 }, // 0: is supported language is English (0x0409)
"TinyUSB", // 1: Manufacturer
"TinyUSB Device", // 2: Product
@@ -254,14 +246,14 @@ uint16_t const *tud_descriptor_string_cb(uint8_t index, uint16_t langid) {
// Note: the 0xEE index string is a Microsoft OS 1.0 Descriptors.
// https://docs.microsoft.com/en-us/windows-hardware/drivers/usbcon/microsoft-defined-usb-descriptors
if ( !(index < sizeof(string_desc_arr) / sizeof(string_desc_arr[0])) ) return NULL;
if ( !(index < sizeof(string_desc_arr) / sizeof(string_desc_arr[0])) ) { return NULL; }
const char *str = string_desc_arr[index];
// Cap at max char
chr_count = strlen(str);
size_t const max_count = sizeof(_desc_str) / sizeof(_desc_str[0]) - 1; // -1 for string type
if ( chr_count > max_count ) chr_count = max_count;
if ( chr_count > max_count ) { chr_count = max_count; }
// Convert ASCII string into UTF-16
for ( size_t i = 0; i < chr_count; i++ ) {
@@ -272,6 +264,5 @@ uint16_t const *tud_descriptor_string_cb(uint8_t index, uint16_t langid) {
// first byte is length (including header), second byte is string type
_desc_str[0] = (uint16_t) ((TUSB_DESC_STRING << 8) | (2 * chr_count + 2));
return _desc_str;
}

95
src/class/cdc/cdc.h
View File

@@ -221,18 +221,20 @@ typedef enum {
// Management Element Notification (Notification Endpoint)
//--------------------------------------------------------------------+
#define CDC_REQ_TYPE_NOTIF 0xA1 ///< Direction IN; Type Class; Recipient Interface
/// 6.3 Notification Codes
typedef enum {
CDC_NOTIF_NETWORK_CONNECTION = 0x00, ///< This notification allows the device to notify the host about network connection status.
CDC_NOTIF_RESPONSE_AVAILABLE = 0x01, ///< This notification allows the device to notify the hostthat a response is available. This response can be retrieved with a subsequent \ref CDC_REQUEST_GET_ENCAPSULATED_RESPONSE request.
CDC_NOTIF_NETWORK_CONNECTION = 0x00, // notify the host about network connection status.
CDC_NOTIF_RESPONSE_AVAILABLE = 0x01, // notify the host that a response is available.
CDC_NOTIF_AUX_JACK_HOOK_STATE = 0x08,
CDC_NOTIF_RING_DETECT = 0x09,
CDC_NOTIF_SERIAL_STATE = 0x20,
CDC_NOTIF_CALL_STATE_CHANGE = 0x28,
CDC_NOTIF_LINE_STATE_CHANGE = 0x29,
CDC_NOTIF_CONNECTION_SPEED_CHANGE = 0x2A, ///< This notification allows the device to inform the host-networking driver that a change in either the upstream or the downstream bit rate of the connection has occurred
CDC_NOTIF_CONNECTION_SPEED_CHANGE = 0x2A, // notify the host-networking driver that a change in either the upstream or the downstream bit rate of the connection has occurred
CDC_NOTIF_MDLM_SEMANTIC_MODEL_NOTIFICATION = 0x40,
}cdc_notification_request_t;
} cdc_notify_request_t;
//--------------------------------------------------------------------+
// Class Specific Functional Descriptor (Communication Interface)
@@ -243,8 +245,7 @@ TU_ATTR_PACKED_BEGIN
TU_ATTR_BIT_FIELD_ORDER_BEGIN
/// Header Functional Descriptor (Communication Interface)
typedef struct TU_ATTR_PACKED
{
typedef struct TU_ATTR_PACKED {
uint8_t bLength ; ///< Size of this descriptor in bytes.
uint8_t bDescriptorType ; ///< Descriptor Type, must be Class-Specific
uint8_t bDescriptorSubType ; ///< Descriptor SubType one of above CDC_FUNC_DESC_
@@ -252,8 +253,7 @@ typedef struct TU_ATTR_PACKED
}cdc_desc_func_header_t;
/// Union Functional Descriptor (Communication Interface)
typedef struct TU_ATTR_PACKED
{
typedef struct TU_ATTR_PACKED {
uint8_t bLength ; ///< Size of this descriptor in bytes.
uint8_t bDescriptorType ; ///< Descriptor Type, must be Class-Specific
uint8_t bDescriptorSubType ; ///< Descriptor SubType one of above CDC_FUCN_DESC_
@@ -271,14 +271,13 @@ typedef struct TU_ATTR_PACKED
}
/// Country Selection Functional Descriptor (Communication Interface)
typedef struct TU_ATTR_PACKED
{
typedef struct TU_ATTR_PACKED {
uint8_t bLength ; ///< Size of this descriptor in bytes.
uint8_t bDescriptorType ; ///< Descriptor Type, must be Class-Specific
uint8_t bDescriptorSubType ; ///< Descriptor SubType one of above CDC_FUCN_DESC_
uint8_t iCountryCodeRelDate ; ///< Index of a string giving the release date for the implemented ISO 3166 Country Codes.
uint16_t wCountryCode ; ///< Country code in the format as defined in [ISO3166], release date as specified inoffset 3 for the first supported country.
}cdc_desc_func_country_selection_t;
} cdc_desc_func_country_selection_t;
#define cdc_desc_func_country_selection_n_t(no_country) \
struct TU_ATTR_PACKED { \
@@ -295,8 +294,7 @@ typedef struct TU_ATTR_PACKED
/// \brief Call Management Functional Descriptor
/// \details This functional descriptor describes the processing of calls for the Communications Class interface.
typedef struct TU_ATTR_PACKED
{
typedef struct TU_ATTR_PACKED {
uint8_t bLength ; ///< Size of this descriptor in bytes.
uint8_t bDescriptorType ; ///< Descriptor Type, must be Class-Specific
uint8_t bDescriptorSubType ; ///< Descriptor SubType one of above CDC_FUCN_DESC_
@@ -310,8 +308,7 @@ typedef struct TU_ATTR_PACKED
uint8_t bDataInterface;
}cdc_desc_func_call_management_t;
typedef struct TU_ATTR_PACKED
{
typedef struct TU_ATTR_PACKED {
uint8_t support_comm_request : 1; ///< Device supports the request combination of Set_Comm_Feature, Clear_Comm_Feature, and Get_Comm_Feature.
uint8_t support_line_request : 1; ///< Device supports the request combination of Set_Line_Coding, Set_Control_Line_State, Get_Line_Coding, and the notification Serial_State.
uint8_t support_send_break : 1; ///< Device supports the request Send_Break
@@ -323,8 +320,7 @@ TU_VERIFY_STATIC(sizeof(cdc_acm_capability_t) == 1, "mostly problem with compile
/// Abstract Control Management Functional Descriptor
/// This functional descriptor describes the commands supported by by the Communications Class interface with SubClass code of \ref CDC_COMM_SUBCLASS_ABSTRACT_CONTROL_MODEL
typedef struct TU_ATTR_PACKED
{
typedef struct TU_ATTR_PACKED {
uint8_t bLength ; ///< Size of this descriptor in bytes.
uint8_t bDescriptorType ; ///< Descriptor Type, must be Class-Specific
uint8_t bDescriptorSubType ; ///< Descriptor SubType one of above CDC_FUCN_DESC_
@@ -333,8 +329,7 @@ typedef struct TU_ATTR_PACKED
/// \brief Direct Line Management Functional Descriptor
/// \details This functional descriptor describes the commands supported by the Communications Class interface with SubClass code of \ref CDC_FUNC_DESC_DIRECT_LINE_MANAGEMENT
typedef struct TU_ATTR_PACKED
{
typedef struct TU_ATTR_PACKED {
uint8_t bLength ; ///< Size of this descriptor in bytes.
uint8_t bDescriptorType ; ///< Descriptor Type, must be Class-Specific
uint8_t bDescriptorSubType ; ///< Descriptor SubType one of above CDC_FUCN_DESC_
@@ -396,8 +391,7 @@ typedef struct TU_ATTR_PACKED
}cdc_desc_func_telephone_call_state_reporting_capabilities_t;
// TODO remove
static inline uint8_t cdc_functional_desc_typeof(uint8_t const * p_desc)
{
TU_ATTR_ALWAYS_INLINE static inline uint8_t cdc_functional_desc_typeof(uint8_t const * p_desc) {
return p_desc[2];
}
@@ -414,7 +408,7 @@ typedef struct TU_ATTR_PACKED {
TU_VERIFY_STATIC(sizeof(cdc_line_coding_t) == 7, "size is not correct");
typedef union TU_ATTR_PACKED {
struct {
struct TU_ATTR_PACKED {
uint8_t dtr : 1;
uint8_t rts : 1;
uint8_t : 6;
@@ -427,31 +421,44 @@ TU_VERIFY_STATIC(sizeof(cdc_line_control_state_t) == 1, "size is not correct");
//--------------------------------------------------------------------+
// Notifications
//--------------------------------------------------------------------+
typedef struct TU_ATTR_PACKED
{
uint16_t bRxCarrier : 1;
uint16_t bTxCarrier : 1;
uint16_t bBreak : 1;
uint16_t bRingSignal : 1;
uint16_t bFraming : 1;
uint16_t bParity : 1;
uint16_t bOverRun : 1;
uint16_t : 9;
} cdc_uart_state_t;
// PSTN 1.2 section 6.5.4 table 31
typedef union TU_ATTR_PACKED {
struct TU_ATTR_PACKED {
uint16_t bRxCarrier : 1; // DCD
uint16_t bTxCarrier : 1; // DSR
uint16_t bBreak : 1; // Break Detected
uint16_t bRingSignal : 1;
uint16_t bFraming : 1;
uint16_t bParity : 1;
uint16_t bOverRun : 1;
uint16_t : 9;
};
struct TU_ATTR_PACKED {
uint16_t dcd : 1;
uint16_t dsr : 1;
uint16_t brk : 1;
uint16_t :13;
};
uint16_t value;
} cdc_notify_uart_state_t;
typedef struct TU_ATTR_PACKED
{
uint8_t bmRequestType;
uint8_t bNotification;
uint16_t wValue;
uint16_t wIndex;
uint16_t wLength;
cdc_uart_state_t bmUartState;
} cdc_notif_serial_state_t;
TU_VERIFY_STATIC(sizeof(cdc_notify_uart_state_t) == 2, "size is not correct");
TU_VERIFY_STATIC(sizeof(cdc_notif_serial_state_t) == 10, "size is not correct");
// CDC 1.2 section 6.3.3 table 21
typedef struct TU_ATTR_PACKED {
uint32_t upstream_bitrate;
uint32_t downstream_bitrate;
} cdc_notify_conn_speed_change_t;
#define CDC_REQ_TYPE_NOTIF 0xA1 ///< Direction IN; Type Class; Recipient Interface
typedef struct TU_ATTR_PACKED {
tusb_control_request_t request;
union {
cdc_notify_uart_state_t serial_state;
cdc_notify_conn_speed_change_t conn_speed_change;
};
} cdc_notify_msg_t;
TU_VERIFY_STATIC(sizeof(cdc_notify_msg_t) == 16, "size is not correct");
TU_ATTR_PACKED_END // End of all packed definitions
TU_ATTR_BIT_FIELD_ORDER_END

79
src/class/cdc/cdc_device.c
View File

@@ -48,12 +48,11 @@
typedef struct {
uint8_t rhport;
uint8_t itf_num;
uint8_t ep_notif;
uint8_t ep_in;
uint8_t ep_out;
// Bit 0: DTR (Data Terminal Ready), Bit 1: RTS (Request to Send)
uint8_t line_state;
uint8_t ep_notify;
uint8_t line_state; // Bit 0: DTR, Bit 1: RTS
/*------------- From this point, data is not cleared by bus reset -------------*/
char wanted_char;
@@ -75,7 +74,10 @@ typedef struct {
typedef struct {
TUD_EPBUF_DEF(epout, CFG_TUD_CDC_EP_BUFSIZE);
TUD_EPBUF_DEF(epin, CFG_TUD_CDC_EP_BUFSIZE);
TUD_EPBUF_TYPE_DEF(cdc_notif_serial_state_t, epnotif);
#if CFG_TUD_CDC_NOTIFY
TUD_EPBUF_TYPE_DEF(cdc_notify_msg_t, epnotify);
#endif
} cdcd_epbuf_t;
//--------------------------------------------------------------------+
@@ -120,7 +122,6 @@ static bool _prep_out_transaction(uint8_t itf) {
//--------------------------------------------------------------------+
// APPLICATION API
//--------------------------------------------------------------------+
bool tud_cdc_configure(const tud_cdc_configure_t* driver_cfg) {
TU_VERIFY(driver_cfg);
_cdcd_cfg = *driver_cfg;
@@ -144,27 +145,42 @@ void tud_cdc_n_get_line_coding(uint8_t itf, cdc_line_coding_t* coding) {
(*coding) = _cdcd_itf[itf].line_coding;
}
bool tud_cdc_n_send_uart_state (uint8_t itf, cdc_uart_state_t state) {
#if CFG_TUD_CDC_NOTIFY
bool tud_cdc_n_notify_uart_state (uint8_t itf, const cdc_notify_uart_state_t *state) {
cdcd_interface_t* p_cdc = &_cdcd_itf[itf];
cdcd_epbuf_t* p_epbuf = &_cdcd_epbuf[itf];
TU_VERIFY(tud_ready() && p_cdc->ep_notify != 0);
TU_VERIFY(usbd_edpt_claim(p_cdc->rhport, p_cdc->ep_notify));
// Skip if usb is not ready yet
TU_VERIFY(tud_ready(), 0);
cdc_notify_msg_t* notify_msg = &p_epbuf->epnotify;
notify_msg->request.bmRequestType = CDC_REQ_TYPE_NOTIF;
notify_msg->request.bRequest = CDC_NOTIF_SERIAL_STATE;
notify_msg->request.wValue = 0;
notify_msg->request.wIndex = p_cdc->itf_num;
notify_msg->request.wLength = sizeof(cdc_notify_uart_state_t);
notify_msg->serial_state = *state;
// claim endpoint
TU_VERIFY(usbd_edpt_claim(p_cdc->rhport, p_cdc->ep_notif));
p_epbuf->epnotif.bmRequestType = CDC_REQ_TYPE_NOTIF;
p_epbuf->epnotif.bNotification = CDC_NOTIF_SERIAL_STATE;
p_epbuf->epnotif.wValue = 0;
p_epbuf->epnotif.wIndex = p_cdc->itf_num;
p_epbuf->epnotif.wLength = 2;
p_epbuf->epnotif.bmUartState = state;
// transfer
return usbd_edpt_xfer(p_cdc->rhport, p_cdc->ep_notif, (uint8_t *)&p_epbuf->epnotif, sizeof(cdc_notif_serial_state_t));
return usbd_edpt_xfer(p_cdc->rhport, p_cdc->ep_notify, (uint8_t *)notify_msg, 8 + sizeof(cdc_notify_uart_state_t));
}
bool tud_cdc_n_notify_conn_speed_change(uint8_t itf, const cdc_notify_conn_speed_change_t* conn_speed_change) {
cdcd_interface_t* p_cdc = &_cdcd_itf[itf];
cdcd_epbuf_t* p_epbuf = &_cdcd_epbuf[itf];
TU_VERIFY(tud_ready() && p_cdc->ep_notify != 0);
TU_VERIFY(usbd_edpt_claim(p_cdc->rhport, p_cdc->ep_notify));
cdc_notify_msg_t* notify_msg = &p_epbuf->epnotify;
notify_msg->request.bmRequestType = CDC_REQ_TYPE_NOTIF;
notify_msg->request.bRequest = CDC_NOTIF_CONNECTION_SPEED_CHANGE;
notify_msg->request.wValue = 0;
notify_msg->request.wIndex = p_cdc->itf_num;
notify_msg->request.wLength = sizeof(cdc_notify_conn_speed_change_t);
notify_msg->conn_speed_change = *conn_speed_change;
return usbd_edpt_xfer(p_cdc->rhport, p_cdc->ep_notify, (uint8_t *)notify_msg, 8 + sizeof(cdc_notify_conn_speed_change_t));
}
#endif
void tud_cdc_n_set_wanted_char(uint8_t itf, char wanted) {
_cdcd_itf[itf].wanted_char = wanted;
}
@@ -215,25 +231,20 @@ uint32_t tud_cdc_n_write(uint8_t itf, const void* buffer, uint32_t bufsize) {
uint32_t tud_cdc_n_write_flush(uint8_t itf) {
cdcd_interface_t* p_cdc = &_cdcd_itf[itf];
cdcd_epbuf_t* p_epbuf = &_cdcd_epbuf[itf];
// Skip if usb is not ready yet
TU_VERIFY(tud_ready(), 0);
TU_VERIFY(tud_ready(), 0); // Skip if usb is not ready yet
// No data to send
if (!tu_fifo_count(&p_cdc->tx_ff)) {
return 0;
}
const uint8_t rhport = 0;
// Claim the endpoint
TU_VERIFY(usbd_edpt_claim(p_cdc->rhport, p_cdc->ep_in), 0);
TU_VERIFY(usbd_edpt_claim(p_cdc->rhport, p_cdc->ep_in), 0); // Claim the endpoint
// Pull data from FIFO
const uint16_t count = tu_fifo_read_n(&p_cdc->tx_ff, p_epbuf->epin, CFG_TUD_CDC_EP_BUFSIZE);
if (count) {
TU_ASSERT(usbd_edpt_xfer(rhport, p_cdc->ep_in, p_epbuf->epin, count), 0);
TU_ASSERT(usbd_edpt_xfer(p_cdc->rhport, p_cdc->ep_in, p_epbuf->epin, count), 0);
return count;
} else {
// Release endpoint since we don't make any transfer
@@ -357,9 +368,8 @@ uint16_t cdcd_open(uint8_t rhport, const tusb_desc_interface_t* itf_desc, uint16
if (TUSB_DESC_ENDPOINT == tu_desc_type(p_desc)) {
// notification endpoint
const tusb_desc_endpoint_t* desc_ep = (const tusb_desc_endpoint_t*) p_desc;
TU_ASSERT(usbd_edpt_open(rhport, desc_ep), 0);
p_cdc->ep_notif = desc_ep->bEndpointAddress;
p_cdc->ep_notify = desc_ep->bEndpointAddress;
drv_len += tu_desc_len(p_desc);
p_desc = tu_desc_next(p_desc);
@@ -479,7 +489,7 @@ bool cdcd_xfer_cb(uint8_t rhport, uint8_t ep_addr, xfer_result_t result, uint32_
// Identify which interface to use
for (itf = 0; itf < CFG_TUD_CDC; itf++) {
p_cdc = &_cdcd_itf[itf];
if ((ep_addr == p_cdc->ep_out) || (ep_addr == p_cdc->ep_in) || (ep_addr == p_cdc->ep_notif)) {
if ((ep_addr == p_cdc->ep_out) || (ep_addr == p_cdc->ep_in) || (ep_addr == p_cdc->ep_notify)) {
break;
}
}
@@ -528,7 +538,12 @@ bool cdcd_xfer_cb(uint8_t rhport, uint8_t ep_addr, xfer_result_t result, uint32_
}
}
// nothing to do with notif endpoint for now
// Sent notification to host
if (ep_addr == p_cdc->ep_notify) {
if (tud_cdc_notify_complete_cb) {
tud_cdc_notify_complete_cb(itf);
}
}
return true;
}

34
src/class/cdc/cdc_device.h
View File

@@ -32,6 +32,10 @@
//--------------------------------------------------------------------+
// Class Driver Configuration
//--------------------------------------------------------------------+
#ifndef CFG_TUD_CDC_NOTIFY
#define CFG_TUD_CDC_NOTIFY 0
#endif
#if !defined(CFG_TUD_CDC_EP_BUFSIZE) && defined(CFG_TUD_CDC_EPSIZE)
#warning CFG_TUD_CDC_EPSIZE is renamed to CFG_TUD_CDC_EP_BUFSIZE, please update to use the new name
#define CFG_TUD_CDC_EP_BUFSIZE CFG_TUD_CDC_EPSIZE
@@ -83,9 +87,6 @@ uint8_t tud_cdc_n_get_line_state(uint8_t itf);
// Get current line encoding: bit rate, stop bits parity etc ..
void tud_cdc_n_get_line_coding(uint8_t itf, cdc_line_coding_t* coding);
// Send UART status notification: DCD, DSR etc ..
bool tud_cdc_n_send_uart_state(uint8_t itf, cdc_uart_state_t state);
// Set special character that will trigger tud_cdc_rx_wanted_cb() callback on receiving
void tud_cdc_n_set_wanted_char(uint8_t itf, char wanted);
@@ -129,6 +130,23 @@ uint32_t tud_cdc_n_write_available(uint8_t itf);
// Clear the transmit FIFO
bool tud_cdc_n_write_clear(uint8_t itf);
#if CFG_TUD_CDC_NOTIFY
// Send UART status notification: DCD, DSR etc ..
bool tud_cdc_n_notify_uart_state(uint8_t itf, const cdc_notify_uart_state_t *state);
// Send connection speed change notification
bool tud_cdc_n_notify_conn_speed_change(uint8_t itf, const cdc_notify_conn_speed_change_t* conn_speed_change);
TU_ATTR_ALWAYS_INLINE static inline bool tud_cdc_notify_uart_state(const cdc_notify_uart_state_t* state) {
return tud_cdc_n_notify_uart_state(0, state);
}
TU_ATTR_ALWAYS_INLINE static inline bool tud_cdc_notify_conn_speed_change(const cdc_notify_conn_speed_change_t* conn_speed_change) {
return tud_cdc_n_notify_conn_speed_change(0, conn_speed_change);
}
#endif
//--------------------------------------------------------------------+
// Application API (Single Port)
//--------------------------------------------------------------------+
@@ -149,11 +167,6 @@ TU_ATTR_ALWAYS_INLINE static inline void tud_cdc_get_line_coding(cdc_line_coding
tud_cdc_n_get_line_coding(0, coding);
}
TU_ATTR_ALWAYS_INLINE static inline bool tud_cdc_send_uart_state(cdc_uart_state_t state) {
return tud_cdc_n_send_uart_state(0, state);
}
TU_ATTR_ALWAYS_INLINE static inline void tud_cdc_set_wanted_char(char wanted) {
tud_cdc_n_set_wanted_char(0, wanted);
}
@@ -203,7 +216,7 @@ TU_ATTR_ALWAYS_INLINE static inline bool tud_cdc_write_clear(void) {
}
//--------------------------------------------------------------------+
// Application Callback API (weak is optional)
// Application Callback API
//--------------------------------------------------------------------+
// Invoked when received new data
@@ -215,6 +228,9 @@ TU_ATTR_WEAK void tud_cdc_rx_wanted_cb(uint8_t itf, char wanted_char);
// Invoked when a TX is complete and therefore space becomes available in TX buffer
TU_ATTR_WEAK void tud_cdc_tx_complete_cb(uint8_t itf);
// Invoked when a notification is sent to host
TU_ATTR_WEAK void tud_cdc_notify_complete_cb(uint8_t itf);
// Invoked when line state DTR & RTS are changed via SET_CONTROL_LINE_STATE
TU_ATTR_WEAK void tud_cdc_line_state_cb(uint8_t itf, bool dtr, bool rts);