122 lines
4.8 KiB
C
122 lines
4.8 KiB
C
/*
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* SPDX-FileCopyrightText: 2024 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <assert.h>
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#include <stdio.h>
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#include <libusb-1.0/libusb.h>
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#define TINYUSB_VENDOR 0x303A
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#define TINYUSB_PRODUCT 0x4002
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#define DESC_TYPE_DEVICE_QUALIFIER 0x06
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#define DESC_TYOE_OTHER_SPEED_CONFIG 0x07
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// Buffer for descriptor data
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unsigned char buffer[512] = { 0 };
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// USB Other Speed Configuration Descriptor
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typedef struct __attribute__ ((packed))
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{
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uint8_t bLength ; ///< Size of descriptor
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uint8_t bDescriptorType ; ///< Other_speed_Configuration Type
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uint16_t wTotalLength ; ///< Total length of data returned
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uint8_t bNumInterfaces ; ///< Number of interfaces supported by this speed configuration
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uint8_t bConfigurationValue ; ///< Value to use to select configuration
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uint8_t iConfiguration ; ///< Index of string descriptor
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uint8_t bmAttributes ; ///< Same as Configuration descriptor
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uint8_t bMaxPower ; ///< Same as Configuration descriptor
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} desc_other_speed_t;
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// USB Device Qualifier Descriptor
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typedef struct __attribute__ ((packed))
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{
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uint8_t bLength ; ///< Size of descriptor
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uint8_t bDescriptorType ; ///< Device Qualifier Type
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uint16_t bcdUSB ; ///< USB specification version number (e.g., 0200H for V2.00)
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uint8_t bDeviceClass ; ///< Class Code
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uint8_t bDeviceSubClass ; ///< SubClass Code
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uint8_t bDeviceProtocol ; ///< Protocol Code
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uint8_t bMaxPacketSize0 ; ///< Maximum packet size for other speed
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uint8_t bNumConfigurations ; ///< Number of Other-speed Configurations
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uint8_t bReserved ; ///< Reserved for future use, must be zero
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} desc_device_qualifier_t;
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// printf helpers
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static void _print_device_qulifier_desc(unsigned char *buffer, int length);
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static void _print_other_speed_desc(unsigned char *buffer, int length);
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//
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// MAIN
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//
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int main()
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{
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libusb_context *context = NULL;
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int rc = 0;
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rc = libusb_init(&context);
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assert(rc == 0);
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libusb_device_handle *dev_handle = libusb_open_device_with_vid_pid(context,
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TINYUSB_VENDOR,
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TINYUSB_PRODUCT);
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if (dev_handle != NULL) {
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printf("TinyUSB Device has been found\n");
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// Test Qualifier Descriprtor
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// 1. Get Qualifier Descriptor
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// 2. print descriptor data
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rc = libusb_get_descriptor(dev_handle, DESC_TYPE_DEVICE_QUALIFIER, 0, buffer, 512);
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_print_device_qulifier_desc(buffer, rc);
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// Test Other Speed Descriptor
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// 1. Get Other Speed Descriptor
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// 2. print descriptor data
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rc = libusb_get_descriptor(dev_handle, DESC_TYOE_OTHER_SPEED_CONFIG, 0, buffer, 512);
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_print_other_speed_desc(buffer, rc);
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libusb_close(dev_handle);
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} else {
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printf("TinyUSB Device has NOT been found\n");
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}
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libusb_exit(context);
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}
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// =============================================================================
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static void _print_device_qulifier_desc(unsigned char *buffer, int length)
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{
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assert(buffer);
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desc_device_qualifier_t *qualifier_desc = (desc_device_qualifier_t *) buffer;
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printf("========= Device Qualifier ========== \n");
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printf("\t bLength: %d \n", qualifier_desc->bLength);
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printf("\t bDescriptorType: %d (%#x)\n", qualifier_desc->bDescriptorType, qualifier_desc->bDescriptorType);
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printf("\t bcdUSB: %d (%#x) \n", qualifier_desc->bcdUSB, qualifier_desc->bcdUSB);
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printf("\t bDeviceClass: %d (%#x) \n", qualifier_desc->bDeviceClass, qualifier_desc->bDeviceClass);
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printf("\t bDeviceSubClass: %d \n", qualifier_desc->bDeviceSubClass);
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printf("\t bDeviceProtocol: %d \n", qualifier_desc->bDeviceProtocol);
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printf("\t bMaxPacketSize0: %d \n", qualifier_desc->bMaxPacketSize0);
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printf("\t bNumConfigurations: %d \n", qualifier_desc->bNumConfigurations);
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}
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static void _print_other_speed_desc(unsigned char *buffer, int length)
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{
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assert(buffer);
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desc_other_speed_t *other_speed = (desc_other_speed_t *) buffer;
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printf("============ Other Speed ============ \n");
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printf("\t bLength: %d \n", other_speed->bLength);
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printf("\t bDescriptorType: %d (%#x) \n", other_speed->bDescriptorType, other_speed->bDescriptorType);
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printf("\t wTotalLength: %d \n", other_speed->wTotalLength);
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printf("\t bNumInterfaces: %d \n", other_speed->bNumInterfaces);
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printf("\t bConfigurationValue: %d \n", other_speed->bConfigurationValue);
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printf("\t iConfiguration: %d \n", other_speed->iConfiguration);
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printf("\t bmAttributes: %d (%#x) \n", other_speed->bmAttributes, other_speed->bmAttributes);
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printf("\t bMaxPower: %d (%#x) \n", other_speed->bMaxPower, other_speed->bMaxPower);
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}
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