From 41606a533dbe4bb7e031267d2869401243d2a0aa Mon Sep 17 00:00:00 2001 From: hathach Date: Thu, 3 Jul 2025 13:42:05 +0700 Subject: make notify API and memory configurable with CFG_TUD_CDC_NOTIFY add tud_cdc_n_notify_conn_speed_change() add tud_cdc_notify_complete_cb() --- src/class/cdc/cdc.h | 95 +++++++++++++++++++++++++--------------------- src/class/cdc/cdc_device.c | 81 +++++++++++++++++++++++---------------- src/class/cdc/cdc_device.h | 34 ++++++++++++----- 3 files changed, 124 insertions(+), 86 deletions(-) (limited to 'src/class') diff --git a/src/class/cdc/cdc.h b/src/class/cdc/cdc.h index a403d77fa..10ba16a7c 100644 --- a/src/class/cdc/cdc.h +++ b/src/class/cdc/cdc.h @@ -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 diff --git a/src/class/cdc/cdc_device.c b/src/class/cdc/cdc_device.c index 786c3aa55..4e4e01eaf 100644 --- a/src/class/cdc/cdc_device.c +++ b/src/class/cdc/cdc_device.c @@ -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; @@ -144,26 +145,41 @@ 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)); + + 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; + + return usbd_edpt_xfer(p_cdc->rhport, p_cdc->ep_notify, (uint8_t *)notify_msg, 8 + sizeof(cdc_notify_uart_state_t)); +} - // Skip if usb is not ready yet - TU_VERIFY(tud_ready(), 0); - - // 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)); +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; } diff --git a/src/class/cdc/cdc_device.h b/src/class/cdc/cdc_device.h index f6fa5abf8..a34e07e1d 100644 --- a/src/class/cdc/cdc_device.h +++ b/src/class/cdc/cdc_device.h @@ -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); 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