Seeed Studio
usb device library
Fork of
USBDevice
by 
mbed official
Diff: USBSerial/USBCDC.cpp
- Revision:
- 1:80ab0d068708
- Child:
- 6:d0945750af57
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/USBSerial/USBCDC.cpp Tue Jul 17 14:30:29 2012 +0000
@@ -0,0 +1,239 @@
+/* Copyright (c) 2010-2011 mbed.org, MIT License
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy of this software
+* and associated documentation files (the "Software"), to deal in the Software without
+* restriction, including without limitation the rights to use, copy, modify, merge, publish,
+* distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
+* Software is furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in all copies or
+* substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+* BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#include "stdint.h"
+#include "USBCDC.h"
+
+static uint8_t cdc_line_coding[7]= {0x80, 0x25, 0x00, 0x00, 0x00, 0x00, 0x08};
+
+#define DEFAULT_CONFIGURATION (1)
+
+#define CDC_SET_LINE_CODING 0x20
+#define CDC_GET_LINE_CODING 0x21
+#define CDC_SET_CONTROL_LINE_STATE 0x22
+
+#define MAX_CDC_REPORT_SIZE MAX_PACKET_SIZE_EPBULK
+
+USBCDC::USBCDC(uint16_t vendor_id, uint16_t product_id, uint16_t product_release): USBDevice(vendor_id, product_id, product_release) {
+ USBDevice::connect();
+}
+
+bool USBCDC::USBCallback_request(void) {
+ /* Called in ISR context */
+
+ bool success = false;
+ CONTROL_TRANSFER * transfer = getTransferPtr();
+
+ /* Process class-specific requests */
+
+ if (transfer->setup.bmRequestType.Type == CLASS_TYPE) {
+ switch (transfer->setup.bRequest) {
+ case CDC_GET_LINE_CODING:
+ transfer->remaining = 7;
+ transfer->ptr = cdc_line_coding;
+ transfer->direction = DEVICE_TO_HOST;
+ success = true;
+ break;
+ case CDC_SET_LINE_CODING:
+ transfer->remaining = 7;
+ success = true;
+ break;
+ case CDC_SET_CONTROL_LINE_STATE:
+ success = true;
+ break;
+ default:
+ break;
+ }
+ }
+
+ return success;
+}
+
+
+// Called in ISR context
+// Set configuration. Return false if the
+// configuration is not supported.
+bool USBCDC::USBCallback_setConfiguration(uint8_t configuration) {
+ if (configuration != DEFAULT_CONFIGURATION) {
+ return false;
+ }
+
+ // Configure endpoints > 0
+ addEndpoint(EPINT_IN, MAX_PACKET_SIZE_EPINT);
+ addEndpoint(EPBULK_IN, MAX_PACKET_SIZE_EPBULK);
+ addEndpoint(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK);
+
+ // We activate the endpoint to be able to recceive data
+ readStart(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK);
+ return true;
+}
+
+bool USBCDC::send(uint8_t * buffer, uint32_t size) {
+ return USBDevice::write(EPBULK_IN, buffer, size, MAX_CDC_REPORT_SIZE);
+}
+
+bool USBCDC::readEP(uint8_t * buffer, uint32_t * size) {
+ if (!USBDevice::readEP(EPBULK_OUT, buffer, size, MAX_CDC_REPORT_SIZE))
+ return false;
+ if (!readStart(EPBULK_OUT, MAX_CDC_REPORT_SIZE))
+ return false;
+ return true;
+}
+
+bool USBCDC::readEP_NB(uint8_t * buffer, uint32_t * size) {
+ if (!USBDevice::readEP_NB(EPBULK_OUT, buffer, size, MAX_CDC_REPORT_SIZE))
+ return false;
+ if (!readStart(EPBULK_OUT, MAX_CDC_REPORT_SIZE))
+ return false;
+ return true;
+}
+
+
+uint8_t * USBCDC::deviceDesc() {
+ static uint8_t deviceDescriptor[] = {
+ 18, // bLength
+ 1, // bDescriptorType
+ 0x10, 0x01, // bcdUSB
+ 2, // bDeviceClass
+ 0, // bDeviceSubClass
+ 0, // bDeviceProtocol
+ MAX_PACKET_SIZE_EP0, // bMaxPacketSize0
+ LSB(VENDOR_ID), MSB(VENDOR_ID), // idVendor
+ LSB(PRODUCT_ID), MSB(PRODUCT_ID),// idProduct
+ 0x00, 0x01, // bcdDevice
+ 1, // iManufacturer
+ 2, // iProduct
+ 3, // iSerialNumber
+ 1 // bNumConfigurations
+ };
+ return deviceDescriptor;
+}
+
+uint8_t * USBCDC::stringIinterfaceDesc() {
+ static uint8_t stringIinterfaceDescriptor[] = {
+ 0x08,
+ STRING_DESCRIPTOR,
+ 'C',0,'D',0,'C',0,
+ };
+ return stringIinterfaceDescriptor;
+}
+
+uint8_t * USBCDC::stringIproductDesc() {
+ static uint8_t stringIproductDescriptor[] = {
+ 0x16,
+ STRING_DESCRIPTOR,
+ 'C',0,'D',0,'C',0,' ',0,'D',0,'E',0,'V',0,'I',0,'C',0,'E',0
+ };
+ return stringIproductDescriptor;
+}
+
+
+#define CONFIG1_DESC_SIZE (9+9+5+5+4+5+7+9+7+7)
+
+uint8_t * USBCDC::configurationDesc() {
+ static uint8_t configDescriptor[] = {
+ 9, // bLength;
+ 2, // bDescriptorType;
+ LSB(CONFIG1_DESC_SIZE), // wTotalLength
+ MSB(CONFIG1_DESC_SIZE),
+ 2, // bNumInterfaces
+ 1, // bConfigurationValue
+ 0, // iConfiguration
+ 0x80, // bmAttributes
+ 50, // bMaxPower
+
+ // interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
+ 9, // bLength
+ 4, // bDescriptorType
+ 0, // bInterfaceNumber
+ 0, // bAlternateSetting
+ 1, // bNumEndpoints
+ 0x02, // bInterfaceClass
+ 0x02, // bInterfaceSubClass
+ 0x01, // bInterfaceProtocol
+ 0, // iInterface
+
+ // CDC Header Functional Descriptor, CDC Spec 5.2.3.1, Table 26
+ 5, // bFunctionLength
+ 0x24, // bDescriptorType
+ 0x00, // bDescriptorSubtype
+ 0x10, 0x01, // bcdCDC
+
+ // Call Management Functional Descriptor, CDC Spec 5.2.3.2, Table 27
+ 5, // bFunctionLength
+ 0x24, // bDescriptorType
+ 0x01, // bDescriptorSubtype
+ 0x03, // bmCapabilities
+ 1, // bDataInterface
+
+ // Abstract Control Management Functional Descriptor, CDC Spec 5.2.3.3, Table 28
+ 4, // bFunctionLength
+ 0x24, // bDescriptorType
+ 0x02, // bDescriptorSubtype
+ 0x06, // bmCapabilities
+
+ // Union Functional Descriptor, CDC Spec 5.2.3.8, Table 33
+ 5, // bFunctionLength
+ 0x24, // bDescriptorType
+ 0x06, // bDescriptorSubtype
+ 0, // bMasterInterface
+ 1, // bSlaveInterface0
+
+ // endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
+ ENDPOINT_DESCRIPTOR_LENGTH, // bLength
+ ENDPOINT_DESCRIPTOR, // bDescriptorType
+ PHY_TO_DESC(EPINT_IN), // bEndpointAddress
+ E_INTERRUPT, // bmAttributes (0x03=intr)
+ LSB(MAX_PACKET_SIZE_EPINT), // wMaxPacketSize (LSB)
+ MSB(MAX_PACKET_SIZE_EPINT), // wMaxPacketSize (MSB)
+ 16, // bInterval
+
+
+
+
+ // interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
+ 9, // bLength
+ 4, // bDescriptorType
+ 1, // bInterfaceNumber
+ 0, // bAlternateSetting
+ 2, // bNumEndpoints
+ 0x0A, // bInterfaceClass
+ 0x00, // bInterfaceSubClass
+ 0x00, // bInterfaceProtocol
+ 0, // iInterface
+
+ // endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
+ 7, // bLength
+ 5, // bDescriptorType
+ PHY_TO_DESC(EPBULK_IN), // bEndpointAddress
+ 0x02, // bmAttributes (0x02=bulk)
+ LSB(MAX_PACKET_SIZE_EPBULK), // wMaxPacketSize (LSB)
+ MSB(MAX_PACKET_SIZE_EPBULK), // wMaxPacketSize (MSB)
+ 0, // bInterval
+
+ // endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
+ 7, // bLength
+ 5, // bDescriptorType
+ PHY_TO_DESC(EPBULK_OUT),// bEndpointAddress
+ 0x02, // bmAttributes (0x02=bulk)
+ LSB(MAX_PACKET_SIZE_EPBULK), // wMaxPacketSize (LSB)
+ MSB(MAX_PACKET_SIZE_EPBULK), // wMaxPacketSize (MSB)
+ 0 // bInterval
+ };
+ return configDescriptor;
+}