287 lines
11 KiB
C++
287 lines
11 KiB
C++
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/* Copyright (c) 2010-2011 mbed.org, MIT License
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of this software
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* and associated documentation files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all copies or
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* substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
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* BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "stdint.h"
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#include "USBCDC.h"
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static uint8_t cdc_line_coding[7]= {0x80, 0x25, 0x00, 0x00, 0x00, 0x00, 0x08};
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#define DEFAULT_CONFIGURATION (1)
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#define CDC_SET_LINE_CODING 0x20
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#define CDC_GET_LINE_CODING 0x21
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#define CDC_SET_CONTROL_LINE_STATE 0x22
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// Control Line State bits
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#define CLS_DTR (1 << 0)
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#define CLS_RTS (1 << 1)
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#define MAX_CDC_REPORT_SIZE MAX_PACKET_SIZE_EPBULK
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USBCDC::USBCDC(uint16_t vendor_id, uint16_t product_id, uint16_t product_release, bool connect_blocking): USBDevice(vendor_id, product_id, product_release) {
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terminal_connected = false;
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USBDevice::connect(connect_blocking);
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}
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bool USBCDC::USBCallback_request(void) {
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/* Called in ISR context */
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bool success = false;
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CONTROL_TRANSFER * transfer = getTransferPtr();
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/* Process class-specific requests */
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if (transfer->setup.bmRequestType.Type == CLASS_TYPE) {
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switch (transfer->setup.bRequest) {
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case CDC_GET_LINE_CODING:
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transfer->remaining = 7;
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transfer->ptr = cdc_line_coding;
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transfer->direction = DEVICE_TO_HOST;
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success = true;
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break;
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case CDC_SET_LINE_CODING:
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transfer->remaining = 7;
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transfer->notify = true;
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success = true;
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break;
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case CDC_SET_CONTROL_LINE_STATE:
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if (transfer->setup.wValue & CLS_DTR) {
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terminal_connected = true;
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} else {
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terminal_connected = false;
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}
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success = true;
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break;
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default:
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break;
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}
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}
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return success;
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}
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void USBCDC::USBCallback_requestCompleted(uint8_t *buf, uint32_t length) {
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// Request of setting line coding has 7 bytes
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if (length != 7) {
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return;
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}
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CONTROL_TRANSFER * transfer = getTransferPtr();
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/* Process class-specific requests */
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if (transfer->setup.bmRequestType.Type == CLASS_TYPE) {
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if (transfer->setup.bRequest == CDC_SET_LINE_CODING) {
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if (memcmp(cdc_line_coding, buf, 7)) {
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memcpy(cdc_line_coding, buf, 7);
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int baud = buf[0] + (buf[1] << 8)
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+ (buf[2] << 16) + (buf[3] << 24);
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int stop = buf[4];
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int bits = buf[6];
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int parity = buf[5];
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lineCodingChanged(baud, bits, parity, stop);
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}
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}
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}
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}
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// Called in ISR context
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// Set configuration. Return false if the
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// configuration is not supported.
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bool USBCDC::USBCallback_setConfiguration(uint8_t configuration) {
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if (configuration != DEFAULT_CONFIGURATION) {
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return false;
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}
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// Configure endpoints > 0
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addEndpoint(EPINT_IN, MAX_PACKET_SIZE_EPINT);
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addEndpoint(EPBULK_IN, MAX_PACKET_SIZE_EPBULK);
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addEndpoint(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK);
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// We activate the endpoint to be able to recceive data
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readStart(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK);
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return true;
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}
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bool USBCDC::send(uint8_t * buffer, uint32_t size) {
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return USBDevice::write(EPBULK_IN, buffer, size, MAX_CDC_REPORT_SIZE);
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}
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bool USBCDC::readEP(uint8_t * buffer, uint32_t * size) {
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if (!USBDevice::readEP(EPBULK_OUT, buffer, size, MAX_CDC_REPORT_SIZE))
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return false;
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if (!readStart(EPBULK_OUT, MAX_CDC_REPORT_SIZE))
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return false;
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return true;
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}
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bool USBCDC::readEP_NB(uint8_t * buffer, uint32_t * size) {
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if (!USBDevice::readEP_NB(EPBULK_OUT, buffer, size, MAX_CDC_REPORT_SIZE))
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return false;
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if (!readStart(EPBULK_OUT, MAX_CDC_REPORT_SIZE))
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return false;
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return true;
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}
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uint8_t * USBCDC::deviceDesc() {
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static uint8_t deviceDescriptor[] = {
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18, // bLength
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1, // bDescriptorType
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0x10, 0x01, // bcdUSB
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2, // bDeviceClass
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0, // bDeviceSubClass
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0, // bDeviceProtocol
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MAX_PACKET_SIZE_EP0, // bMaxPacketSize0
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(uint8_t)(LSB(VENDOR_ID)), (uint8_t)(MSB(VENDOR_ID)), // idVendor
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(uint8_t)(LSB(PRODUCT_ID)), (uint8_t)(MSB(PRODUCT_ID)),// idProduct
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0x00, 0x01, // bcdDevice
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1, // iManufacturer
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2, // iProduct
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3, // iSerialNumber
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1 // bNumConfigurations
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};
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return deviceDescriptor;
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}
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uint8_t * USBCDC::stringIinterfaceDesc() {
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static uint8_t stringIinterfaceDescriptor[] = {
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0x08,
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STRING_DESCRIPTOR,
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'C',0,'D',0,'C',0,
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};
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return stringIinterfaceDescriptor;
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}
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uint8_t * USBCDC::stringIproductDesc() {
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static uint8_t stringIproductDescriptor[] = {
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0x16,
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STRING_DESCRIPTOR,
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'C',0,'D',0,'C',0,' ',0,'D',0,'E',0,'V',0,'I',0,'C',0,'E',0
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};
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return stringIproductDescriptor;
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}
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#define CONFIG1_DESC_SIZE (9+8+9+5+5+4+5+7+9+7+7)
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uint8_t * USBCDC::configurationDesc() {
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static uint8_t configDescriptor[] = {
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// configuration descriptor
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9, // bLength
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2, // bDescriptorType
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LSB(CONFIG1_DESC_SIZE), // wTotalLength
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MSB(CONFIG1_DESC_SIZE),
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2, // bNumInterfaces
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1, // bConfigurationValue
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0, // iConfiguration
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0x80, // bmAttributes
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50, // bMaxPower
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// IAD to associate the two CDC interfaces
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0x08, // bLength
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0x0b, // bDescriptorType
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0x00, // bFirstInterface
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0x02, // bInterfaceCount
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0x02, // bFunctionClass
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0x02, // bFunctionSubClass
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0, // bFunctionProtocol
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0, // iFunction
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// interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
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9, // bLength
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4, // bDescriptorType
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0, // bInterfaceNumber
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0, // bAlternateSetting
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1, // bNumEndpoints
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0x02, // bInterfaceClass
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0x02, // bInterfaceSubClass
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0x01, // bInterfaceProtocol
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0, // iInterface
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// CDC Header Functional Descriptor, CDC Spec 5.2.3.1, Table 26
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5, // bFunctionLength
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0x24, // bDescriptorType
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0x00, // bDescriptorSubtype
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0x10, 0x01, // bcdCDC
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// Call Management Functional Descriptor, CDC Spec 5.2.3.2, Table 27
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5, // bFunctionLength
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0x24, // bDescriptorType
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0x01, // bDescriptorSubtype
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0x03, // bmCapabilities
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1, // bDataInterface
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// Abstract Control Management Functional Descriptor, CDC Spec 5.2.3.3, Table 28
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4, // bFunctionLength
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0x24, // bDescriptorType
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0x02, // bDescriptorSubtype
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0x06, // bmCapabilities
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// Union Functional Descriptor, CDC Spec 5.2.3.8, Table 33
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5, // bFunctionLength
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0x24, // bDescriptorType
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0x06, // bDescriptorSubtype
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0, // bMasterInterface
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1, // bSlaveInterface0
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// endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
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ENDPOINT_DESCRIPTOR_LENGTH, // bLength
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ENDPOINT_DESCRIPTOR, // bDescriptorType
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PHY_TO_DESC(EPINT_IN), // bEndpointAddress
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E_INTERRUPT, // bmAttributes (0x03=intr)
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LSB(MAX_PACKET_SIZE_EPINT), // wMaxPacketSize (LSB)
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MSB(MAX_PACKET_SIZE_EPINT), // wMaxPacketSize (MSB)
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16, // bInterval
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// interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
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9, // bLength
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4, // bDescriptorType
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1, // bInterfaceNumber
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0, // bAlternateSetting
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2, // bNumEndpoints
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0x0A, // bInterfaceClass
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0x00, // bInterfaceSubClass
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0x00, // bInterfaceProtocol
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0, // iInterface
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// endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
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ENDPOINT_DESCRIPTOR_LENGTH, // bLength
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ENDPOINT_DESCRIPTOR, // bDescriptorType
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PHY_TO_DESC(EPBULK_IN), // bEndpointAddress
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E_BULK, // bmAttributes (0x02=bulk)
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LSB(MAX_PACKET_SIZE_EPBULK),// wMaxPacketSize (LSB)
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MSB(MAX_PACKET_SIZE_EPBULK),// wMaxPacketSize (MSB)
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0, // bInterval
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// endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
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ENDPOINT_DESCRIPTOR_LENGTH, // bLength
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ENDPOINT_DESCRIPTOR, // bDescriptorType
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PHY_TO_DESC(EPBULK_OUT), // bEndpointAddress
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E_BULK, // bmAttributes (0x02=bulk)
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LSB(MAX_PACKET_SIZE_EPBULK),// wMaxPacketSize (LSB)
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MSB(MAX_PACKET_SIZE_EPBULK),// wMaxPacketSize (MSB)
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0 // bInterval
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};
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return configDescriptor;
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}
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