#include #include #include #include #include #include "usb.h" #include "usb_cdc.h" #define CDC0_RXD_EP 0x01 #define CDC0_TXD_EP 0x82 #define CDC0_NTF_EP 0x83 #define CDC1_RXD_EP 0x04 #define CDC1_TXD_EP 0x85 #define CDC1_NTF_EP 0x86 #define CDC_NTF_SZ 0x08 #define IF_NUM_MAX 2 struct CdcIadDescriptor { struct usb_iad_descriptor comm_iad; struct usb_interface_descriptor comm; struct usb_cdc_header_desc cdc_hdr; struct usb_cdc_call_mgmt_desc cdc_mgmt; struct usb_cdc_acm_desc cdc_acm; struct usb_cdc_union_desc cdc_union; struct usb_endpoint_descriptor comm_ep; struct usb_interface_descriptor data; struct usb_endpoint_descriptor data_eprx; struct usb_endpoint_descriptor data_eptx; }; struct CdcConfigDescriptorSingle { struct usb_config_descriptor config; struct CdcIadDescriptor iad_0; } FURI_PACKED; struct CdcConfigDescriptorDual { struct usb_config_descriptor config; struct CdcIadDescriptor iad_0; struct CdcIadDescriptor iad_1; } FURI_PACKED; static const struct usb_string_descriptor dev_manuf_desc = USB_STRING_DESC("Flipper Devices Inc."); /* Device descriptor */ static const struct usb_device_descriptor cdc_device_desc = { .bLength = sizeof(struct usb_device_descriptor), .bDescriptorType = USB_DTYPE_DEVICE, .bcdUSB = VERSION_BCD(2, 0, 0), .bDeviceClass = USB_CLASS_IAD, .bDeviceSubClass = USB_SUBCLASS_IAD, .bDeviceProtocol = USB_PROTO_IAD, .bMaxPacketSize0 = USB_EP0_SIZE, .idVendor = 0x0483, .idProduct = 0x5740, .bcdDevice = VERSION_BCD(1, 0, 0), .iManufacturer = UsbDevManuf, .iProduct = UsbDevProduct, .iSerialNumber = UsbDevSerial, .bNumConfigurations = 1, }; /* Device configuration descriptor - single mode*/ static const struct CdcConfigDescriptorSingle cdc_cfg_desc_single = { .config = { .bLength = sizeof(struct usb_config_descriptor), .bDescriptorType = USB_DTYPE_CONFIGURATION, .wTotalLength = sizeof(struct CdcConfigDescriptorSingle), .bNumInterfaces = 2, .bConfigurationValue = 1, .iConfiguration = NO_DESCRIPTOR, .bmAttributes = USB_CFG_ATTR_RESERVED | USB_CFG_ATTR_SELFPOWERED, .bMaxPower = USB_CFG_POWER_MA(500), }, .iad_0 = { .comm_iad = { .bLength = sizeof(struct usb_iad_descriptor), .bDescriptorType = USB_DTYPE_INTERFASEASSOC, .bFirstInterface = 0, .bInterfaceCount = 2, .bFunctionClass = USB_CLASS_CDC, .bFunctionSubClass = USB_CDC_SUBCLASS_ACM, .bFunctionProtocol = USB_PROTO_NONE, .iFunction = NO_DESCRIPTOR, }, .comm = { .bLength = sizeof(struct usb_interface_descriptor), .bDescriptorType = USB_DTYPE_INTERFACE, .bInterfaceNumber = 0, .bAlternateSetting = 0, .bNumEndpoints = 1, .bInterfaceClass = USB_CLASS_CDC, .bInterfaceSubClass = USB_CDC_SUBCLASS_ACM, .bInterfaceProtocol = USB_PROTO_NONE, .iInterface = NO_DESCRIPTOR, }, .cdc_hdr = { .bFunctionLength = sizeof(struct usb_cdc_header_desc), .bDescriptorType = USB_DTYPE_CS_INTERFACE, .bDescriptorSubType = USB_DTYPE_CDC_HEADER, .bcdCDC = VERSION_BCD(1, 1, 0), }, .cdc_mgmt = { .bFunctionLength = sizeof(struct usb_cdc_call_mgmt_desc), .bDescriptorType = USB_DTYPE_CS_INTERFACE, .bDescriptorSubType = USB_DTYPE_CDC_CALL_MANAGEMENT, .bmCapabilities = 0, .bDataInterface = 1, }, .cdc_acm = { .bFunctionLength = sizeof(struct usb_cdc_acm_desc), .bDescriptorType = USB_DTYPE_CS_INTERFACE, .bDescriptorSubType = USB_DTYPE_CDC_ACM, .bmCapabilities = 0, }, .cdc_union = { .bFunctionLength = sizeof(struct usb_cdc_union_desc), .bDescriptorType = USB_DTYPE_CS_INTERFACE, .bDescriptorSubType = USB_DTYPE_CDC_UNION, .bMasterInterface0 = 0, .bSlaveInterface0 = 1, }, .comm_ep = { .bLength = sizeof(struct usb_endpoint_descriptor), .bDescriptorType = USB_DTYPE_ENDPOINT, .bEndpointAddress = CDC0_NTF_EP, .bmAttributes = USB_EPTYPE_INTERRUPT, .wMaxPacketSize = CDC_NTF_SZ, .bInterval = 0xFF, }, .data = { .bLength = sizeof(struct usb_interface_descriptor), .bDescriptorType = USB_DTYPE_INTERFACE, .bInterfaceNumber = 1, .bAlternateSetting = 0, .bNumEndpoints = 2, .bInterfaceClass = USB_CLASS_CDC_DATA, .bInterfaceSubClass = USB_SUBCLASS_NONE, .bInterfaceProtocol = USB_PROTO_NONE, .iInterface = NO_DESCRIPTOR, }, .data_eprx = { .bLength = sizeof(struct usb_endpoint_descriptor), .bDescriptorType = USB_DTYPE_ENDPOINT, .bEndpointAddress = CDC0_RXD_EP, .bmAttributes = USB_EPTYPE_BULK, .wMaxPacketSize = CDC_DATA_SZ, .bInterval = 0x01, }, .data_eptx = { .bLength = sizeof(struct usb_endpoint_descriptor), .bDescriptorType = USB_DTYPE_ENDPOINT, .bEndpointAddress = CDC0_TXD_EP, .bmAttributes = USB_EPTYPE_BULK, .wMaxPacketSize = CDC_DATA_SZ, .bInterval = 0x01, }, }, }; /* Device configuration descriptor - dual mode*/ static const struct CdcConfigDescriptorDual cdc_cfg_desc_dual = { .config = { .bLength = sizeof(struct usb_config_descriptor), .bDescriptorType = USB_DTYPE_CONFIGURATION, .wTotalLength = sizeof(struct CdcConfigDescriptorDual), .bNumInterfaces = 4, .bConfigurationValue = 1, .iConfiguration = NO_DESCRIPTOR, .bmAttributes = USB_CFG_ATTR_RESERVED | USB_CFG_ATTR_SELFPOWERED, .bMaxPower = USB_CFG_POWER_MA(500), }, .iad_0 = { .comm_iad = { .bLength = sizeof(struct usb_iad_descriptor), .bDescriptorType = USB_DTYPE_INTERFASEASSOC, .bFirstInterface = 0, .bInterfaceCount = 2, .bFunctionClass = USB_CLASS_CDC, .bFunctionSubClass = USB_CDC_SUBCLASS_ACM, .bFunctionProtocol = USB_PROTO_NONE, .iFunction = NO_DESCRIPTOR, }, .comm = { .bLength = sizeof(struct usb_interface_descriptor), .bDescriptorType = USB_DTYPE_INTERFACE, .bInterfaceNumber = 0, .bAlternateSetting = 0, .bNumEndpoints = 1, .bInterfaceClass = USB_CLASS_CDC, .bInterfaceSubClass = USB_CDC_SUBCLASS_ACM, .bInterfaceProtocol = USB_PROTO_NONE, .iInterface = NO_DESCRIPTOR, }, .cdc_hdr = { .bFunctionLength = sizeof(struct usb_cdc_header_desc), .bDescriptorType = USB_DTYPE_CS_INTERFACE, .bDescriptorSubType = USB_DTYPE_CDC_HEADER, .bcdCDC = VERSION_BCD(1, 1, 0), }, .cdc_mgmt = { .bFunctionLength = sizeof(struct usb_cdc_call_mgmt_desc), .bDescriptorType = USB_DTYPE_CS_INTERFACE, .bDescriptorSubType = USB_DTYPE_CDC_CALL_MANAGEMENT, .bmCapabilities = 0, .bDataInterface = 1, }, .cdc_acm = { .bFunctionLength = sizeof(struct usb_cdc_acm_desc), .bDescriptorType = USB_DTYPE_CS_INTERFACE, .bDescriptorSubType = USB_DTYPE_CDC_ACM, .bmCapabilities = 0, }, .cdc_union = { .bFunctionLength = sizeof(struct usb_cdc_union_desc), .bDescriptorType = USB_DTYPE_CS_INTERFACE, .bDescriptorSubType = USB_DTYPE_CDC_UNION, .bMasterInterface0 = 0, .bSlaveInterface0 = 1, }, .comm_ep = { .bLength = sizeof(struct usb_endpoint_descriptor), .bDescriptorType = USB_DTYPE_ENDPOINT, .bEndpointAddress = CDC0_NTF_EP, .bmAttributes = USB_EPTYPE_INTERRUPT, .wMaxPacketSize = CDC_NTF_SZ, .bInterval = 0xFF, }, .data = { .bLength = sizeof(struct usb_interface_descriptor), .bDescriptorType = USB_DTYPE_INTERFACE, .bInterfaceNumber = 1, .bAlternateSetting = 0, .bNumEndpoints = 2, .bInterfaceClass = USB_CLASS_CDC_DATA, .bInterfaceSubClass = USB_SUBCLASS_NONE, .bInterfaceProtocol = USB_PROTO_NONE, .iInterface = NO_DESCRIPTOR, }, .data_eprx = { .bLength = sizeof(struct usb_endpoint_descriptor), .bDescriptorType = USB_DTYPE_ENDPOINT, .bEndpointAddress = CDC0_RXD_EP, .bmAttributes = USB_EPTYPE_BULK, .wMaxPacketSize = CDC_DATA_SZ, .bInterval = 0x01, }, .data_eptx = { .bLength = sizeof(struct usb_endpoint_descriptor), .bDescriptorType = USB_DTYPE_ENDPOINT, .bEndpointAddress = CDC0_TXD_EP, .bmAttributes = USB_EPTYPE_BULK, .wMaxPacketSize = CDC_DATA_SZ, .bInterval = 0x01, }, }, .iad_1 = { .comm_iad = { .bLength = sizeof(struct usb_iad_descriptor), .bDescriptorType = USB_DTYPE_INTERFASEASSOC, .bFirstInterface = 2, .bInterfaceCount = 2, .bFunctionClass = USB_CLASS_CDC, .bFunctionSubClass = USB_CDC_SUBCLASS_ACM, .bFunctionProtocol = USB_PROTO_NONE, .iFunction = NO_DESCRIPTOR, }, .comm = { .bLength = sizeof(struct usb_interface_descriptor), .bDescriptorType = USB_DTYPE_INTERFACE, .bInterfaceNumber = 2 + 0, .bAlternateSetting = 0, .bNumEndpoints = 1, .bInterfaceClass = USB_CLASS_CDC, .bInterfaceSubClass = USB_CDC_SUBCLASS_ACM, .bInterfaceProtocol = USB_PROTO_NONE, .iInterface = NO_DESCRIPTOR, }, .cdc_hdr = { .bFunctionLength = sizeof(struct usb_cdc_header_desc), .bDescriptorType = USB_DTYPE_CS_INTERFACE, .bDescriptorSubType = USB_DTYPE_CDC_HEADER, .bcdCDC = VERSION_BCD(1, 1, 0), }, .cdc_mgmt = { .bFunctionLength = sizeof(struct usb_cdc_call_mgmt_desc), .bDescriptorType = USB_DTYPE_CS_INTERFACE, .bDescriptorSubType = USB_DTYPE_CDC_CALL_MANAGEMENT, .bmCapabilities = 0, .bDataInterface = 2 + 1, }, .cdc_acm = { .bFunctionLength = sizeof(struct usb_cdc_acm_desc), .bDescriptorType = USB_DTYPE_CS_INTERFACE, .bDescriptorSubType = USB_DTYPE_CDC_ACM, .bmCapabilities = 0, }, .cdc_union = { .bFunctionLength = sizeof(struct usb_cdc_union_desc), .bDescriptorType = USB_DTYPE_CS_INTERFACE, .bDescriptorSubType = USB_DTYPE_CDC_UNION, .bMasterInterface0 = 2 + 0, .bSlaveInterface0 = 2 + 1, }, .comm_ep = { .bLength = sizeof(struct usb_endpoint_descriptor), .bDescriptorType = USB_DTYPE_ENDPOINT, .bEndpointAddress = CDC1_NTF_EP, .bmAttributes = USB_EPTYPE_INTERRUPT, .wMaxPacketSize = CDC_NTF_SZ, .bInterval = 0xFF, }, .data = { .bLength = sizeof(struct usb_interface_descriptor), .bDescriptorType = USB_DTYPE_INTERFACE, .bInterfaceNumber = 2 + 1, .bAlternateSetting = 0, .bNumEndpoints = 2, .bInterfaceClass = USB_CLASS_CDC_DATA, .bInterfaceSubClass = USB_SUBCLASS_NONE, .bInterfaceProtocol = USB_PROTO_NONE, .iInterface = NO_DESCRIPTOR, }, .data_eprx = { .bLength = sizeof(struct usb_endpoint_descriptor), .bDescriptorType = USB_DTYPE_ENDPOINT, .bEndpointAddress = CDC1_RXD_EP, .bmAttributes = USB_EPTYPE_BULK, .wMaxPacketSize = CDC_DATA_SZ, .bInterval = 0x01, }, .data_eptx = { .bLength = sizeof(struct usb_endpoint_descriptor), .bDescriptorType = USB_DTYPE_ENDPOINT, .bEndpointAddress = CDC1_TXD_EP, .bmAttributes = USB_EPTYPE_BULK, .wMaxPacketSize = CDC_DATA_SZ, .bInterval = 0x01, }, }, }; static struct usb_cdc_line_coding cdc_config[IF_NUM_MAX] = {}; static uint8_t cdc_ctrl_line_state[IF_NUM_MAX]; static void cdc_init(usbd_device* dev, FuriHalUsbInterface* intf, void* ctx); static void cdc_deinit(usbd_device* dev); static void cdc_on_wakeup(usbd_device* dev); static void cdc_on_suspend(usbd_device* dev); static usbd_respond cdc_ep_config(usbd_device* dev, uint8_t cfg); static usbd_respond cdc_control(usbd_device* dev, usbd_ctlreq* req, usbd_rqc_callback* callback); static usbd_device* usb_dev; static FuriHalUsbInterface* cdc_if_cur = NULL; static bool connected = false; static CdcCallbacks* callbacks[IF_NUM_MAX] = {NULL}; static void* cb_ctx[IF_NUM_MAX]; FuriHalUsbInterface usb_cdc_single = { .init = cdc_init, .deinit = cdc_deinit, .wakeup = cdc_on_wakeup, .suspend = cdc_on_suspend, .dev_descr = (struct usb_device_descriptor*)&cdc_device_desc, .str_manuf_descr = (void*)&dev_manuf_desc, .str_prod_descr = NULL, .str_serial_descr = NULL, .cfg_descr = (void*)&cdc_cfg_desc_single, }; FuriHalUsbInterface usb_cdc_dual = { .init = cdc_init, .deinit = cdc_deinit, .wakeup = cdc_on_wakeup, .suspend = cdc_on_suspend, .dev_descr = (struct usb_device_descriptor*)&cdc_device_desc, .str_manuf_descr = (void*)&dev_manuf_desc, .str_prod_descr = NULL, .str_serial_descr = NULL, .cfg_descr = (void*)&cdc_cfg_desc_dual, }; static void cdc_init(usbd_device* dev, FuriHalUsbInterface* intf, void* ctx) { UNUSED(ctx); usb_dev = dev; cdc_if_cur = intf; char* name = (char*)furi_hal_version_get_device_name_ptr(); uint8_t len = (name == NULL) ? (0) : (strlen(name)); struct usb_string_descriptor* dev_prod_desc = malloc(len * 2 + 2); dev_prod_desc->bLength = len * 2 + 2; dev_prod_desc->bDescriptorType = USB_DTYPE_STRING; for(uint8_t i = 0; i < len; i++) { dev_prod_desc->wString[i] = name[i]; } name = (char*)furi_hal_version_get_name_ptr(); len = (name == NULL) ? (0) : (strlen(name)); struct usb_string_descriptor* dev_serial_desc = malloc((len + 5) * 2 + 2); dev_serial_desc->bLength = (len + 5) * 2 + 2; dev_serial_desc->bDescriptorType = USB_DTYPE_STRING; memcpy(dev_serial_desc->wString, "f\0l\0i\0p\0_\0", 5 * 2); for(uint8_t i = 0; i < len; i++) { dev_serial_desc->wString[i + 5] = name[i]; } cdc_if_cur->str_prod_descr = dev_prod_desc; cdc_if_cur->str_serial_descr = dev_serial_desc; usbd_reg_config(dev, cdc_ep_config); usbd_reg_control(dev, cdc_control); usbd_connect(dev, true); } static void cdc_deinit(usbd_device* dev) { usbd_reg_config(dev, NULL); usbd_reg_control(dev, NULL); free(cdc_if_cur->str_prod_descr); free(cdc_if_cur->str_serial_descr); cdc_if_cur = NULL; } void furi_hal_cdc_set_callbacks(uint8_t if_num, CdcCallbacks* cb, void* context) { furi_check(if_num < IF_NUM_MAX); if(callbacks[if_num] != NULL) { if(callbacks[if_num]->state_callback != NULL) { if(connected == true) callbacks[if_num]->state_callback(cb_ctx[if_num], 0); } } callbacks[if_num] = cb; cb_ctx[if_num] = context; if(callbacks[if_num] != NULL) { if(callbacks[if_num]->state_callback != NULL) { if(connected == true) callbacks[if_num]->state_callback(cb_ctx[if_num], 1); } if(callbacks[if_num]->ctrl_line_callback != NULL) { callbacks[if_num]->ctrl_line_callback(cb_ctx[if_num], cdc_ctrl_line_state[if_num]); } } } struct usb_cdc_line_coding* furi_hal_cdc_get_port_settings(uint8_t if_num) { furi_check(if_num < IF_NUM_MAX); return &cdc_config[if_num]; } uint8_t furi_hal_cdc_get_ctrl_line_state(uint8_t if_num) { furi_check(if_num < IF_NUM_MAX); return cdc_ctrl_line_state[if_num]; } void furi_hal_cdc_send(uint8_t if_num, uint8_t* buf, uint16_t len) { if(if_num == 0) { usbd_ep_write(usb_dev, CDC0_TXD_EP, buf, len); } else { usbd_ep_write(usb_dev, CDC1_TXD_EP, buf, len); } } int32_t furi_hal_cdc_receive(uint8_t if_num, uint8_t* buf, uint16_t max_len) { int32_t len = 0; if(if_num == 0) { len = usbd_ep_read(usb_dev, CDC0_RXD_EP, buf, max_len); } else { len = usbd_ep_read(usb_dev, CDC1_RXD_EP, buf, max_len); } return (len < 0) ? 0 : len; } static void cdc_on_wakeup(usbd_device* dev) { UNUSED(dev); connected = true; for(uint8_t i = 0; i < IF_NUM_MAX; i++) { if(callbacks[i] != NULL) { if(callbacks[i]->state_callback != NULL) callbacks[i]->state_callback(cb_ctx[i], 1); } } } static void cdc_on_suspend(usbd_device* dev) { UNUSED(dev); connected = false; for(uint8_t i = 0; i < IF_NUM_MAX; i++) { cdc_ctrl_line_state[i] = 0; if(callbacks[i] != NULL) { if(callbacks[i]->state_callback != NULL) callbacks[i]->state_callback(cb_ctx[i], 0); } } } static void cdc_rx_ep_callback(usbd_device* dev, uint8_t event, uint8_t ep) { UNUSED(dev); UNUSED(event); uint8_t if_num = 0; if(ep == CDC0_RXD_EP) { if_num = 0; } else { if_num = 1; } if(callbacks[if_num] != NULL) { if(callbacks[if_num]->rx_ep_callback != NULL) { callbacks[if_num]->rx_ep_callback(cb_ctx[if_num]); } } } static void cdc_tx_ep_callback(usbd_device* dev, uint8_t event, uint8_t ep) { UNUSED(dev); UNUSED(event); uint8_t if_num = 0; if(ep == CDC0_TXD_EP) { if_num = 0; } else { if_num = 1; } if(callbacks[if_num] != NULL) { if(callbacks[if_num]->tx_ep_callback != NULL) { callbacks[if_num]->tx_ep_callback(cb_ctx[if_num]); } } } static void cdc_txrx_ep_callback(usbd_device* dev, uint8_t event, uint8_t ep) { if(event == usbd_evt_eptx) { cdc_tx_ep_callback(dev, event, ep); } else { cdc_rx_ep_callback(dev, event, ep); } } /* Configure endpoints */ static usbd_respond cdc_ep_config(usbd_device* dev, uint8_t cfg) { uint8_t if_cnt = ((struct usb_config_descriptor*)(cdc_if_cur->cfg_descr))->bNumInterfaces; switch(cfg) { case 0: /* deconfiguring device */ if(if_cnt == 4) { usbd_ep_deconfig(dev, CDC1_NTF_EP); usbd_ep_deconfig(dev, CDC1_TXD_EP); usbd_ep_deconfig(dev, CDC1_RXD_EP); usbd_reg_endpoint(dev, CDC1_RXD_EP, 0); usbd_reg_endpoint(dev, CDC1_TXD_EP, 0); } usbd_ep_deconfig(dev, CDC0_NTF_EP); usbd_ep_deconfig(dev, CDC0_TXD_EP); usbd_ep_deconfig(dev, CDC0_RXD_EP); usbd_reg_endpoint(dev, CDC0_RXD_EP, 0); usbd_reg_endpoint(dev, CDC0_TXD_EP, 0); return usbd_ack; case 1: /* configuring device */ if((CDC0_TXD_EP & 0x7F) != (CDC0_RXD_EP & 0x7F)) { // 2x unidirectional endpoint mode with dualbuf usbd_ep_config(dev, CDC0_RXD_EP, USB_EPTYPE_BULK | USB_EPTYPE_DBLBUF, CDC_DATA_SZ); usbd_ep_config(dev, CDC0_TXD_EP, USB_EPTYPE_BULK | USB_EPTYPE_DBLBUF, CDC_DATA_SZ); usbd_ep_config(dev, CDC0_NTF_EP, USB_EPTYPE_INTERRUPT, CDC_NTF_SZ); usbd_reg_endpoint(dev, CDC0_RXD_EP, cdc_rx_ep_callback); usbd_reg_endpoint(dev, CDC0_TXD_EP, cdc_tx_ep_callback); } else { // 1x bidirectional endpoint mode usbd_ep_config(dev, CDC0_RXD_EP, USB_EPTYPE_BULK, CDC_DATA_SZ); usbd_ep_config(dev, CDC0_TXD_EP, USB_EPTYPE_BULK, CDC_DATA_SZ); usbd_ep_config(dev, CDC0_NTF_EP, USB_EPTYPE_INTERRUPT, CDC_NTF_SZ); usbd_reg_endpoint(dev, CDC0_RXD_EP, cdc_txrx_ep_callback); usbd_reg_endpoint(dev, CDC0_TXD_EP, cdc_txrx_ep_callback); } usbd_ep_write(dev, CDC0_TXD_EP, 0, 0); if(if_cnt == 4) { if((CDC1_TXD_EP & 0x7F) != (CDC1_RXD_EP & 0x7F)) { usbd_ep_config(dev, CDC1_RXD_EP, USB_EPTYPE_BULK | USB_EPTYPE_DBLBUF, CDC_DATA_SZ); usbd_ep_config(dev, CDC1_TXD_EP, USB_EPTYPE_BULK | USB_EPTYPE_DBLBUF, CDC_DATA_SZ); usbd_ep_config(dev, CDC1_NTF_EP, USB_EPTYPE_INTERRUPT, CDC_NTF_SZ); usbd_reg_endpoint(dev, CDC1_RXD_EP, cdc_rx_ep_callback); usbd_reg_endpoint(dev, CDC1_TXD_EP, cdc_tx_ep_callback); } else { usbd_ep_config(dev, CDC1_RXD_EP, USB_EPTYPE_BULK, CDC_DATA_SZ); usbd_ep_config(dev, CDC1_TXD_EP, USB_EPTYPE_BULK, CDC_DATA_SZ); usbd_ep_config(dev, CDC1_NTF_EP, USB_EPTYPE_INTERRUPT, CDC_NTF_SZ); usbd_reg_endpoint(dev, CDC1_RXD_EP, cdc_txrx_ep_callback); usbd_reg_endpoint(dev, CDC1_TXD_EP, cdc_txrx_ep_callback); } usbd_ep_write(dev, CDC1_TXD_EP, 0, 0); } return usbd_ack; default: return usbd_fail; } } /* Control requests handler */ static usbd_respond cdc_control(usbd_device* dev, usbd_ctlreq* req, usbd_rqc_callback* callback) { UNUSED(callback); /* CDC control requests */ uint8_t if_num = 0; if(((USB_REQ_RECIPIENT | USB_REQ_TYPE) & req->bmRequestType) == (USB_REQ_INTERFACE | USB_REQ_CLASS) && (req->wIndex == 0 || req->wIndex == 2)) { if(req->wIndex == 0) { if_num = 0; } else { if_num = 1; } switch(req->bRequest) { case USB_CDC_SET_CONTROL_LINE_STATE: if(callbacks[if_num] != NULL) { cdc_ctrl_line_state[if_num] = req->wValue; if(callbacks[if_num]->ctrl_line_callback != NULL) { callbacks[if_num]->ctrl_line_callback( cb_ctx[if_num], cdc_ctrl_line_state[if_num]); } } return usbd_ack; case USB_CDC_SET_LINE_CODING: memcpy(&cdc_config[if_num], req->data, sizeof(cdc_config[0])); if(callbacks[if_num] != NULL) { if(callbacks[if_num]->config_callback != NULL) { callbacks[if_num]->config_callback(cb_ctx[if_num], &cdc_config[if_num]); } } return usbd_ack; case USB_CDC_GET_LINE_CODING: dev->status.data_ptr = &cdc_config[if_num]; dev->status.data_count = sizeof(cdc_config[0]); return usbd_ack; default: return usbd_fail; } } return usbd_fail; }