/** * @brief Auxiliary function to access CDC ACM DATA OUT endpoint address. * * @param[in] p_inst Class instance data. * * @return OUT endpoint address. */ static inline nrf_drv_usbd_ep_t data_ep_out_addr_get(app_usbd_class_inst_t const * p_inst) { app_usbd_class_iface_conf_t const * class_iface; class_iface = app_usbd_class_iface_get(p_inst, APP_USBD_CDC_ACM_DATA_IFACE_IDX); app_usbd_class_ep_conf_t const * ep_cfg; ep_cfg = app_usbd_class_iface_ep_get(class_iface, APP_USBD_CDC_ACM_DATA_EPOUT_IDX); return app_usbd_class_ep_address_get(ep_cfg); }
/** * @brief Auxiliary function to access CDC ACM COMM IN endpoint address. * * @param[in] p_inst Class instance data. * * @return IN endpoint address. */ static inline nrf_drv_usbd_ep_t comm_ep_in_addr_get(app_usbd_class_inst_t const * p_inst) { app_usbd_class_iface_conf_t const * class_iface; class_iface = app_usbd_class_iface_get(p_inst, APP_USBD_CDC_ACM_COMM_IFACE_IDX); app_usbd_class_ep_conf_t const * ep_cfg; ep_cfg = app_usbd_class_iface_ep_get(class_iface, APP_USBD_CDC_ACM_COMM_EPIN_IDX); return app_usbd_class_ep_address_get(ep_cfg); }
/** * @brief Auxiliary function to access isochronous endpoint address. * * @param[in] p_inst Class instance data. * * @return ISO endpoint address. */ static inline nrf_drv_usbd_ep_t ep_iso_addr_get(app_usbd_class_inst_t const * p_inst) { app_usbd_class_iface_conf_t const * class_iface; class_iface = app_usbd_class_iface_get(p_inst, APP_USBD_AUDIO_STREAMING_IFACE_IDX); app_usbd_class_ep_conf_t const * ep_cfg; ep_cfg = app_usbd_class_iface_ep_get(class_iface, APP_USBD_CDC_AUDIO_STREAMING_EP_IDX); return app_usbd_class_ep_address_get(ep_cfg); }
/** * @brief Select interface. * * @param[in,out] p_inst Instance of the class. * @param[in] iface_idx Index of the interface inside class structure. * @param[in] alternate Alternate setting that should be selected. */ static ret_code_t iface_select( app_usbd_class_inst_t const * const p_inst, uint8_t iface_idx, uint8_t alternate) { app_usbd_class_iface_conf_t const * p_iface = app_usbd_class_iface_get(p_inst, iface_idx); /* Simple check if this is data interface */ uint8_t const ep_count = app_usbd_class_iface_ep_count_get(p_iface); if (ep_count > 0) { if (alternate > 1) { return NRF_ERROR_INVALID_PARAM; } app_usbd_audio_t const * p_audio = audio_get(p_inst); app_usbd_audio_ctx_t * p_audio_ctx = audio_ctx_get(p_audio); p_audio_ctx->streaming = (alternate != 0); uint8_t i; for (i = 0; i < ep_count; ++i) { nrf_drv_usbd_ep_t ep_addr = app_usbd_class_ep_address_get(app_usbd_class_iface_ep_get(p_iface, i)); if (alternate) { app_usbd_ep_enable(ep_addr); } else { app_usbd_ep_disable(ep_addr); } } return NRF_SUCCESS; } return NRF_ERROR_NOT_SUPPORTED; }
static bool audio_feed_descriptors(app_usbd_class_descriptor_ctx_t * p_ctx, app_usbd_class_inst_t const * p_inst, uint8_t * p_buff, size_t max_size) { static uint8_t ifaces = 0; ifaces = app_usbd_class_iface_count_get(p_inst); ASSERT(ifaces == 2); app_usbd_audio_t const * p_audio = audio_get(p_inst); APP_USBD_CLASS_DESCRIPTOR_BEGIN(p_ctx, p_buff, max_size); /* CONTROL INTERFACE DESCRIPTOR */ APP_USBD_CLASS_DESCRIPTOR_WRITE(0x09); // bLength APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_DESCRIPTOR_INTERFACE); // bDescriptorType = Interface static app_usbd_class_iface_conf_t const * p_cur_iface = NULL; p_cur_iface = app_usbd_class_iface_get(p_inst, 0); APP_USBD_CLASS_DESCRIPTOR_WRITE(app_usbd_class_iface_number_get(p_cur_iface)); // bInterfaceNumber APP_USBD_CLASS_DESCRIPTOR_WRITE(0x00); // bAlternateSetting APP_USBD_CLASS_DESCRIPTOR_WRITE(app_usbd_class_iface_ep_count_get(p_cur_iface)); // bNumEndpoints APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_AUDIO_CLASS); // bInterfaceClass = Audio APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_AUDIO_SUBCLASS_AUDIOCONTROL); // bInterfaceSubclass (Audio Control) APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_AUDIO_CLASS_PROTOCOL_UNDEFINED); // bInterfaceProtocol APP_USBD_CLASS_DESCRIPTOR_WRITE(0x00); // iInterface /* HEADER INTERFACE */ APP_USBD_CLASS_DESCRIPTOR_WRITE(0x09); // bLength APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_AUDIO_DESCRIPTOR_INTERFACE); // bDescriptorType = Audio Interfaces APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_AUDIO_AC_IFACE_SUBTYPE_HEADER); // bDescriptorSubtype = Header APP_USBD_CLASS_DESCRIPTOR_WRITE(LSB_16(0x0100)); // bcdADC LSB APP_USBD_CLASS_DESCRIPTOR_WRITE(MSB_16(0x0100)); // bcdADC MSB static uint16_t header_desc_len = 0; header_desc_len = 9 + audio_get_feature_descriptor_size(p_inst) + audio_get_input_descriptor_size(p_inst) + audio_get_output_descriptor_size( p_inst); APP_USBD_CLASS_DESCRIPTOR_WRITE(LSB_16(header_desc_len)); // wTotalLength LSB APP_USBD_CLASS_DESCRIPTOR_WRITE(MSB_16(header_desc_len)); // wTotalLength MSB APP_USBD_CLASS_DESCRIPTOR_WRITE(0x01); // bInCollection APP_USBD_CLASS_DESCRIPTOR_WRITE(audio_get_control_interface_number(p_inst) + 1); // baInterfaceNr(1) /* INPUT TERMINAL DESCRIPTOR */ static uint32_t cur_byte = 0; static size_t input_desc_size = 0; input_desc_size = audio_get_input_descriptor_size(p_inst); for (cur_byte = 0; cur_byte < input_desc_size; cur_byte++) { APP_USBD_CLASS_DESCRIPTOR_WRITE(audio_get_input_descriptor_data(p_inst, cur_byte)); } /* FEATURE UNIT DESCRIPTOR */ static size_t feature_desc_size = 0; feature_desc_size = audio_get_feature_descriptor_size(p_inst); for (cur_byte = 0; cur_byte < feature_desc_size; cur_byte++) { APP_USBD_CLASS_DESCRIPTOR_WRITE(audio_get_feature_descriptor_data(p_inst, cur_byte)); } /* OUTPUT TERMINAL DESCRIPTOR */ static size_t output_desc_size = 0; output_desc_size = audio_get_output_descriptor_size(p_inst); for (cur_byte = 0; cur_byte < output_desc_size; cur_byte++) { APP_USBD_CLASS_DESCRIPTOR_WRITE(audio_get_output_descriptor_data(p_inst, cur_byte)); } p_cur_iface++; /* STREAM INTERFACE DESCRIPTOR ALT 0 */ APP_USBD_CLASS_DESCRIPTOR_WRITE(0x09); // bLength APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_DESCRIPTOR_INTERFACE); // bDescriptorType = Interface APP_USBD_CLASS_DESCRIPTOR_WRITE(audio_get_control_interface_number(p_inst) + 1); // bInterfaceNumber APP_USBD_CLASS_DESCRIPTOR_WRITE(0x00); // bAlternateSetting APP_USBD_CLASS_DESCRIPTOR_WRITE(0x00); // bNumEndpoints APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_AUDIO_CLASS); // bInterfaceClass = Audio APP_USBD_CLASS_DESCRIPTOR_WRITE(p_audio->specific.inst.type_streaming); // bInterfaceSubclass (Audio Control) APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_AUDIO_CLASS_PROTOCOL_UNDEFINED); // bInterfaceProtocol APP_USBD_CLASS_DESCRIPTOR_WRITE(0x00); // iInterface /* STREAM INTERFACE DESCRIPTOR ALT 1 */ APP_USBD_CLASS_DESCRIPTOR_WRITE(0x09); // bLength APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_DESCRIPTOR_INTERFACE); // bDescriptorType = Interface APP_USBD_CLASS_DESCRIPTOR_WRITE(audio_get_control_interface_number(p_inst) + 1); // bInterfaceNumber APP_USBD_CLASS_DESCRIPTOR_WRITE(0x01); // bAlternateSetting APP_USBD_CLASS_DESCRIPTOR_WRITE(app_usbd_class_iface_ep_count_get(p_cur_iface)); // bNumEndpoints APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_AUDIO_CLASS); // bInterfaceClass = Audio APP_USBD_CLASS_DESCRIPTOR_WRITE(p_audio->specific.inst.type_streaming); // bInterfaceSubclass (Audio Control) APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_AUDIO_CLASS_PROTOCOL_UNDEFINED); // bInterfaceProtocol APP_USBD_CLASS_DESCRIPTOR_WRITE(0x00); // iInterface /* AudioStreaming GENERAL DESCRIPTOR */ APP_USBD_CLASS_DESCRIPTOR_WRITE(0x07); // bLength APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_AUDIO_DESCRIPTOR_INTERFACE); // bDescriptorType = Audio Interface APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_AUDIO_AS_IFACE_SUBTYPE_GENERAL); // bDescriptorSubtype = General APP_USBD_CLASS_DESCRIPTOR_WRITE(audio_get_control_interface_number(p_inst) + 1); // bTerminalLink APP_USBD_CLASS_DESCRIPTOR_WRITE(p_audio->specific.inst.delay); // bDelay APP_USBD_CLASS_DESCRIPTOR_WRITE(LSB_16(p_audio->specific.inst.format)); // wFormatTag LSB APP_USBD_CLASS_DESCRIPTOR_WRITE(MSB_16(p_audio->specific.inst.format)); // wFormatTag MSB /* FORMAT DESCRIPTOR */ static size_t format_desc_size = 0; format_desc_size = audio_get_format_descriptor_size(p_inst); for (cur_byte = 0; cur_byte < format_desc_size; cur_byte++) { APP_USBD_CLASS_DESCRIPTOR_WRITE(audio_get_format_descriptor_data(p_inst, cur_byte)); } /* ENDPOINT GENERAL DESCRIPTOR */ APP_USBD_CLASS_DESCRIPTOR_WRITE(0x07); // bLength APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_AUDIO_DESCRIPTOR_ENDPOINT); // bDescriptorType = Audio Descriptor APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_AUDIO_EP_SUBTYPE_GENERAL); // bDescriptorSubtype = EP General APP_USBD_CLASS_DESCRIPTOR_WRITE(0x00); // bmAttributes APP_USBD_CLASS_DESCRIPTOR_WRITE(0x00); // bLockDelayUnits APP_USBD_CLASS_DESCRIPTOR_WRITE(LSB_16(0x0000)); // wLockDelay LSB APP_USBD_CLASS_DESCRIPTOR_WRITE(MSB_16(0x0000)); // wLockDelay MSB /* ENDPOINT ISO DESCRIPTOR */ APP_USBD_CLASS_DESCRIPTOR_WRITE(0x09); // bLength APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_DESCRIPTOR_ENDPOINT); // bDescriptorType = Endpoint static app_usbd_class_ep_conf_t const * p_cur_ep = NULL; p_cur_ep = app_usbd_class_iface_ep_get(p_cur_iface, 0); APP_USBD_CLASS_DESCRIPTOR_WRITE(app_usbd_class_ep_address_get(p_cur_ep)); // bEndpointAddress APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_DESCRIPTOR_EP_ATTR_TYPE_ISOCHRONOUS); // bmAttributes APP_USBD_CLASS_DESCRIPTOR_WRITE(LSB_16(p_audio->specific.inst.ep_size)); // wMaxPacketSize LSB APP_USBD_CLASS_DESCRIPTOR_WRITE(MSB_16(p_audio->specific.inst.ep_size)); // wMaxPacketSize MSB APP_USBD_CLASS_DESCRIPTOR_WRITE(0x01); // bInterval APP_USBD_CLASS_DESCRIPTOR_WRITE(0x00); // bRefresh APP_USBD_CLASS_DESCRIPTOR_WRITE(0x00); // bSynchAddress APP_USBD_CLASS_DESCRIPTOR_END(); }