diff options
Diffstat (limited to 'examples/device/cdc_uac2/src/usb_descriptors.c')
| -rw-r--r-- | examples/device/cdc_uac2/src/usb_descriptors.c | 69 |
1 files changed, 67 insertions, 2 deletions
diff --git a/examples/device/cdc_uac2/src/usb_descriptors.c b/examples/device/cdc_uac2/src/usb_descriptors.c index 9f7255d8a..22d3cf05a 100644 --- a/examples/device/cdc_uac2/src/usb_descriptors.c +++ b/examples/device/cdc_uac2/src/usb_descriptors.c @@ -116,7 +116,7 @@ uint8_t const * tud_descriptor_device_cb(void) #define EPNUM_CDC_IN 0x84 #endif -uint8_t const desc_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), @@ -128,13 +128,78 @@ uint8_t const desc_configuration[] = TUD_CDC_DESCRIPTOR(ITF_NUM_CDC, 6, EPNUM_CDC_NOTIF, 8, EPNUM_CDC_OUT, EPNUM_CDC_IN, 64) }; +#if TUD_OPT_HIGH_SPEED +// Per USB specs: high speed capable device must report device_qualifier and other_speed_configuration + +// high speed 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), + + // Interface number, string index, EP Out & EP In address, EP size + TUD_AUDIO_HEADSET_STEREO_DESCRIPTOR(2, EPNUM_AUDIO_OUT, EPNUM_AUDIO_IN | 0x80), + + // CDC: Interface number, string index, EP notification address and size, EP data address (out, in) and size. + TUD_CDC_DESCRIPTOR(ITF_NUM_CDC, 6, EPNUM_CDC_NOTIF, 8, EPNUM_CDC_OUT, EPNUM_CDC_IN, 512) +}; + +// other speed configuration +uint8_t desc_other_speed_config[CONFIG_TOTAL_LEN]; + +// 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 = { + .bLength = sizeof(tusb_desc_device_qualifier_t), + .bDescriptorType = TUSB_DESC_DEVICE_QUALIFIER, + .bcdUSB = 0x0100, + + .bDeviceClass = TUSB_CLASS_MISC, + .bDeviceSubClass = MISC_SUBCLASS_COMMON, + .bDeviceProtocol = MISC_PROTOCOL_IAD, + + .bMaxPacketSize0 = CFG_TUD_ENDPOINT0_SIZE, + .bNumConfigurations = 0x01, + .bReserved = 0x00 +}; + +// Invoked when received GET DEVICE QUALIFIER DESCRIPTOR request +// 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; +} + +// 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 + + // if link speed is high return fullspeed config, and vice versa + // Note: the descriptor type is OHER_SPEED_CONFIG instead of CONFIG + memcpy(desc_other_speed_config, + (tud_speed_get() == TUSB_SPEED_HIGH) ? desc_fs_configuration : desc_hs_configuration, + CONFIG_TOTAL_LEN); + + desc_other_speed_config[1] = TUSB_DESC_OTHER_SPEED_CONFIG; + + return desc_other_speed_config; +} + +#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 - return desc_configuration; +#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; +#else + return desc_fs_configuration; +#endif } //--------------------------------------------------------------------+ |