From 4c7bfc4dbec60fb12d542562fd3843005c24300b Mon Sep 17 00:00:00 2001 From: hathach Date: Mon, 9 Mar 2026 14:28:59 +0700 Subject: [PATCH] refactor: add desc_device_noheader_t to simplify get device descriptor local --- src/common/tusb_types.h | 2 - src/host/usbh.c | 86 +++++++++++++++++------------------------ 2 files changed, 35 insertions(+), 53 deletions(-) diff --git a/src/common/tusb_types.h b/src/common/tusb_types.h index 7d26ac74e..8a48a0f04 100644 --- a/src/common/tusb_types.h +++ b/src/common/tusb_types.h @@ -341,12 +341,10 @@ typedef struct TU_ATTR_PACKED { uint8_t bLength ; ///< Size of this descriptor in bytes. uint8_t bDescriptorType ; ///< DEVICE Descriptor Type. uint16_t bcdUSB ; ///< BUSB Specification Release Number in Binary-Coded Decimal (i.e., 2.10 is 210H). - uint8_t bDeviceClass ; ///< Class code (assigned by the USB-IF). uint8_t bDeviceSubClass ; ///< Subclass code (assigned by the USB-IF). uint8_t bDeviceProtocol ; ///< Protocol code (assigned by the USB-IF). uint8_t bMaxPacketSize0 ; ///< Maximum packet size for endpoint zero (only 8, 16, 32, or 64 are valid). For HS devices is fixed to 64. - uint16_t idVendor ; ///< Vendor ID (assigned by the USB-IF). uint16_t idProduct ; ///< Product ID (assigned by the manufacturer). uint16_t bcdDevice ; ///< Device release number in binary-coded decimal. diff --git a/src/host/usbh.c b/src/host/usbh.c index 0fa9b6646..6574e7819 100644 --- a/src/host/usbh.c +++ b/src/host/usbh.c @@ -104,10 +104,9 @@ TU_ATTR_WEAK void tuh_umount_cb(uint8_t daddr) { //--------------------------------------------------------------------+ // Data Structure //--------------------------------------------------------------------+ -typedef struct { - tuh_bus_info_t bus_info; - // Device Descriptor +// Device Descriptor (without bLength and bDescriptorType header) +typedef struct TU_ATTR_PACKED { uint16_t bcdUSB; uint8_t bDeviceClass; uint8_t bDeviceSubClass; @@ -120,6 +119,13 @@ typedef struct { uint8_t iProduct; uint8_t iSerialNumber; uint8_t bNumConfigurations; +} desc_device_noheader_t; + +TU_VERIFY_STATIC( sizeof(desc_device_noheader_t) == 16u, "size is not correct"); + +typedef struct { + tuh_bus_info_t bus_info; + desc_device_noheader_t desc_device; // Device State struct TU_ATTR_PACKED { @@ -413,10 +419,10 @@ bool tuh_vid_pid_get(uint8_t dev_addr, uint16_t *vid, uint16_t *pid) { *vid = *pid = 0; usbh_device_t const *dev = get_device(dev_addr); - TU_VERIFY(dev && dev->addressed && dev->idVendor != 0); + TU_VERIFY(dev && dev->addressed && dev->desc_device.idVendor != 0); - *vid = dev->idVendor; - *pid = dev->idProduct; + *vid = dev->desc_device.idVendor; + *pid = dev->desc_device.idProduct; return true; } @@ -427,18 +433,7 @@ bool tuh_descriptor_get_device_local(uint8_t daddr, tusb_desc_device_t* desc_dev desc_device->bLength = sizeof(tusb_desc_device_t); desc_device->bDescriptorType = TUSB_DESC_DEVICE; - desc_device->bcdUSB = dev->bcdUSB; - desc_device->bDeviceClass = dev->bDeviceClass; - desc_device->bDeviceSubClass = dev->bDeviceSubClass; - desc_device->bDeviceProtocol = dev->bDeviceProtocol; - desc_device->bMaxPacketSize0 = dev->bMaxPacketSize0; - desc_device->idVendor = dev->idVendor; - desc_device->idProduct = dev->idProduct; - desc_device->bcdDevice = dev->bcdDevice; - desc_device->iManufacturer = dev->iManufacturer; - desc_device->iProduct = dev->iProduct; - desc_device->iSerialNumber = dev->iSerialNumber; - desc_device->bNumConfigurations = dev->bNumConfigurations; + memcpy(&desc_device->bcdUSB, &dev->desc_device, sizeof(dev->desc_device)); return true; } @@ -1275,24 +1270,24 @@ bool tuh_descriptor_get_manufacturer_string(uint8_t daddr, uint16_t language_id, tuh_xfer_cb_t complete_cb, uintptr_t user_data) { usbh_device_t const* dev = get_device(daddr); - TU_VERIFY(dev && dev->iManufacturer); - return tuh_descriptor_get_string(daddr, dev->iManufacturer, language_id, buffer, len, complete_cb, user_data); + TU_VERIFY(dev && dev->desc_device.iManufacturer); + return tuh_descriptor_get_string(daddr, dev->desc_device.iManufacturer, language_id, buffer, len, complete_cb, user_data); } // Get product string descriptor bool tuh_descriptor_get_product_string(uint8_t daddr, uint16_t language_id, void* buffer, uint16_t len, tuh_xfer_cb_t complete_cb, uintptr_t user_data) { usbh_device_t const* dev = get_device(daddr); - TU_VERIFY(dev && dev->iProduct); - return tuh_descriptor_get_string(daddr, dev->iProduct, language_id, buffer, len, complete_cb, user_data); + TU_VERIFY(dev && dev->desc_device.iProduct); + return tuh_descriptor_get_string(daddr, dev->desc_device.iProduct, language_id, buffer, len, complete_cb, user_data); } // Get serial string descriptor bool tuh_descriptor_get_serial_string(uint8_t daddr, uint16_t language_id, void* buffer, uint16_t len, tuh_xfer_cb_t complete_cb, uintptr_t user_data) { usbh_device_t const* dev = get_device(daddr); - TU_VERIFY(dev && dev->iSerialNumber); - return tuh_descriptor_get_string(daddr, dev->iSerialNumber, language_id, buffer, len, complete_cb, user_data); + TU_VERIFY(dev && dev->desc_device.iSerialNumber); + return tuh_descriptor_get_string(daddr, dev->desc_device.iSerialNumber, language_id, buffer, len, complete_cb, user_data); } // Get HID report descriptor @@ -1614,7 +1609,7 @@ static void enum_delay_async(uintptr_t state) { const uint8_t new_addr = _usbh_data.enumerating_daddr; usbh_device_t *new_dev = get_device(new_addr); TU_ASSERT(new_dev, ); - if (!usbh_edpt_control_open(new_addr, new_dev->bMaxPacketSize0)) { + if (!usbh_edpt_control_open(new_addr, new_dev->desc_device.bMaxPacketSize0)) { TU_LOG_USBH("Failed to open new device's control endpoint\r\n"); clear_device(new_dev); enum_full_complete(false); @@ -1732,7 +1727,7 @@ static void process_enumeration(tuh_xfer_t *xfer) { usbh_device_t* new_dev = get_device(new_addr); new_dev->bus_info = *dev0_bus; new_dev->connected = 1; - new_dev->bMaxPacketSize0 = desc_device->bMaxPacketSize0; + new_dev->desc_device.bMaxPacketSize0 = desc_device->bMaxPacketSize0; TU_ASSERT(tuh_address_set(0, new_addr, process_enumeration, ENUM_GET_DEVICE_DESC), ); break; @@ -1756,18 +1751,7 @@ static void process_enumeration(tuh_xfer_t *xfer) { // save the received device descriptor tusb_desc_device_t const *desc_device = (tusb_desc_device_t const *) _usbh_epbuf.ctrl; - dev->bcdUSB = desc_device->bcdUSB; - dev->bDeviceClass = desc_device->bDeviceClass; - dev->bDeviceSubClass = desc_device->bDeviceSubClass; - dev->bDeviceProtocol = desc_device->bDeviceProtocol; - dev->bMaxPacketSize0 = desc_device->bMaxPacketSize0; - dev->idVendor = desc_device->idVendor; - dev->idProduct = desc_device->idProduct; - dev->bcdDevice = desc_device->bcdDevice; - dev->iManufacturer = desc_device->iManufacturer; - dev->iProduct = desc_device->iProduct; - dev->iSerialNumber = desc_device->iSerialNumber; - dev->bNumConfigurations = desc_device->bNumConfigurations; + memcpy(&dev->desc_device, &desc_device->bcdUSB, sizeof(dev->desc_device)); tuh_enum_descriptor_device_cb(daddr, desc_device); // callback tuh_descriptor_get_string_langid(daddr, _usbh_epbuf.ctrl, 2, @@ -1787,8 +1771,8 @@ static void process_enumeration(tuh_xfer_t *xfer) { if (desc_langid->bLength >= 4) { langid = tu_le16toh(desc_langid->utf16le[0]); // previous request is langid } - if (dev->iManufacturer != 0) { - tuh_descriptor_get_string(daddr, dev->iManufacturer, langid, _usbh_epbuf.ctrl, 2, + if (dev->desc_device.iManufacturer != 0) { + tuh_descriptor_get_string(daddr, dev->desc_device.iManufacturer, langid, _usbh_epbuf.ctrl, 2, process_enumeration, ENUM_GET_STRING_MANUFACTURER); break; } @@ -1796,10 +1780,10 @@ static void process_enumeration(tuh_xfer_t *xfer) { } case ENUM_GET_STRING_MANUFACTURER: { - if (dev->iManufacturer != 0) { + if (dev->desc_device.iManufacturer != 0) { langid = tu_le16toh(xfer->setup->wIndex); // langid from length's request const uint8_t str_len = xfer->buffer[0]; - tuh_descriptor_get_string(daddr, dev->iManufacturer, langid, _usbh_epbuf.ctrl, str_len, + tuh_descriptor_get_string(daddr, dev->desc_device.iManufacturer, langid, _usbh_epbuf.ctrl, str_len, process_enumeration, ENUM_GET_STRING_PRODUCT_LEN); break; } @@ -1807,22 +1791,22 @@ static void process_enumeration(tuh_xfer_t *xfer) { } case ENUM_GET_STRING_PRODUCT_LEN: { - if (dev->iProduct != 0) { + if (dev->desc_device.iProduct != 0) { if (state == ENUM_GET_STRING_PRODUCT_LEN) { langid = tu_le16toh(xfer->setup->wIndex); // get langid from previous setup packet if not fall through } tuh_descriptor_get_string( - daddr, dev->iProduct, langid, _usbh_epbuf.ctrl, 2, process_enumeration, ENUM_GET_STRING_PRODUCT); + daddr, dev->desc_device.iProduct, langid, _usbh_epbuf.ctrl, 2, process_enumeration, ENUM_GET_STRING_PRODUCT); break; } TU_ATTR_FALLTHROUGH; } case ENUM_GET_STRING_PRODUCT: { - if (dev->iProduct != 0) { + if (dev->desc_device.iProduct != 0) { langid = tu_le16toh(xfer->setup->wIndex); // langid from length's request const uint8_t str_len = xfer->buffer[0]; - tuh_descriptor_get_string(daddr, dev->iProduct, langid, _usbh_epbuf.ctrl, str_len, + tuh_descriptor_get_string(daddr, dev->desc_device.iProduct, langid, _usbh_epbuf.ctrl, str_len, process_enumeration, ENUM_GET_STRING_SERIAL_LEN); break; } @@ -1830,22 +1814,22 @@ static void process_enumeration(tuh_xfer_t *xfer) { } case ENUM_GET_STRING_SERIAL_LEN: { - if (dev->iSerialNumber != 0) { + if (dev->desc_device.iSerialNumber != 0) { if (state == ENUM_GET_STRING_SERIAL_LEN) { langid = tu_le16toh(xfer->setup->wIndex); // get langid from previous setup packet if not fall through } tuh_descriptor_get_string( - daddr, dev->iSerialNumber, langid, _usbh_epbuf.ctrl, 2, process_enumeration, ENUM_GET_STRING_SERIAL); + daddr, dev->desc_device.iSerialNumber, langid, _usbh_epbuf.ctrl, 2, process_enumeration, ENUM_GET_STRING_SERIAL); break; } TU_ATTR_FALLTHROUGH; } case ENUM_GET_STRING_SERIAL: { - if (dev->iSerialNumber != 0) { + if (dev->desc_device.iSerialNumber != 0) { langid = tu_le16toh(xfer->setup->wIndex); // langid from length's request const uint8_t str_len = xfer->buffer[0]; - tuh_descriptor_get_string(daddr, dev->iSerialNumber, langid, _usbh_epbuf.ctrl, str_len, + tuh_descriptor_get_string(daddr, dev->desc_device.iSerialNumber, langid, _usbh_epbuf.ctrl, str_len, process_enumeration, ENUM_GET_9BYTE_CONFIG_DESC); break; } @@ -1884,7 +1868,7 @@ static void process_enumeration(tuh_xfer_t *xfer) { TU_ASSERT(tuh_configuration_set(daddr, config_idx+1u, process_enumeration, ENUM_CONFIG_DRIVER),); } else { config_idx++; - TU_ASSERT(config_idx < dev->bNumConfigurations,); + TU_ASSERT(config_idx < dev->desc_device.bNumConfigurations,); TU_LOG_USBH("Get Configuration[%u] Descriptor (9 bytes)\r\n", config_idx); TU_ASSERT(tuh_descriptor_get_configuration(daddr, config_idx, _usbh_epbuf.ctrl, 9, process_enumeration, ENUM_GET_FULL_CONFIG_DESC),);