USBDevice - USBDevice stack

Users » samux » Code » USBDevice

USBDevice stack

Dependents: erg USBSerial_HelloWorld Slingshot SuperScanner ... more

USBSerial/USBCDC.cpp@0:140cdf8e2d60, 2012-05-30 (annotated)

Committer:: samux
Date:: Wed May 30 18:28:11 2012 +0000
Revision:: 0:140cdf8e2d60

Who changed what in which revision?

User	Revision	Line number	New contents of line
samux	0:140cdf8e2d60	1	/* Copyright (c) 2010-2011 mbed.org, MIT License
samux	0:140cdf8e2d60	2	*
samux	0:140cdf8e2d60	3	* Permission is hereby granted, free of charge, to any person obtaining a copy of this software
samux	0:140cdf8e2d60	4	* and associated documentation files (the "Software"), to deal in the Software without
samux	0:140cdf8e2d60	5	* restriction, including without limitation the rights to use, copy, modify, merge, publish,
samux	0:140cdf8e2d60	6	* distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
samux	0:140cdf8e2d60	7	* Software is furnished to do so, subject to the following conditions:
samux	0:140cdf8e2d60	8	*
samux	0:140cdf8e2d60	9	* The above copyright notice and this permission notice shall be included in all copies or
samux	0:140cdf8e2d60	10	* substantial portions of the Software.
samux	0:140cdf8e2d60	11	*
samux	0:140cdf8e2d60	12	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
samux	0:140cdf8e2d60	13	* BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
samux	0:140cdf8e2d60	14	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
samux	0:140cdf8e2d60	15	* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
samux	0:140cdf8e2d60	16	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
samux	0:140cdf8e2d60	17	*/
samux	0:140cdf8e2d60	18
samux	0:140cdf8e2d60	19	#include "stdint.h"
samux	0:140cdf8e2d60	20	#include "USBCDC.h"
samux	0:140cdf8e2d60	21
samux	0:140cdf8e2d60	22	static uint8_t cdc_line_coding[7]= {0x80, 0x25, 0x00, 0x00, 0x00, 0x00, 0x08};
samux	0:140cdf8e2d60	23
samux	0:140cdf8e2d60	24	#define DEFAULT_CONFIGURATION (1)
samux	0:140cdf8e2d60	25
samux	0:140cdf8e2d60	26	#define CDC_SET_LINE_CODING 0x20
samux	0:140cdf8e2d60	27	#define CDC_GET_LINE_CODING 0x21
samux	0:140cdf8e2d60	28	#define CDC_SET_CONTROL_LINE_STATE 0x22
samux	0:140cdf8e2d60	29
samux	0:140cdf8e2d60	30	#define MAX_CDC_REPORT_SIZE MAX_PACKET_SIZE_EPBULK
samux	0:140cdf8e2d60	31
samux	0:140cdf8e2d60	32	USBCDC::USBCDC(uint16_t vendor_id, uint16_t product_id, uint16_t product_release): USBDevice(vendor_id, product_id, product_release) {
samux	0:140cdf8e2d60	33	USBDevice::connect();
samux	0:140cdf8e2d60	34	}
samux	0:140cdf8e2d60	35
samux	0:140cdf8e2d60	36	bool USBCDC::USBCallback_request(void) {
samux	0:140cdf8e2d60	37	/* Called in ISR context */
samux	0:140cdf8e2d60	38
samux	0:140cdf8e2d60	39	bool success = false;
samux	0:140cdf8e2d60	40	CONTROL_TRANSFER * transfer = getTransferPtr();
samux	0:140cdf8e2d60	41
samux	0:140cdf8e2d60	42	/* Process class-specific requests */
samux	0:140cdf8e2d60	43
samux	0:140cdf8e2d60	44	if (transfer->setup.bmRequestType.Type == CLASS_TYPE) {
samux	0:140cdf8e2d60	45	switch (transfer->setup.bRequest) {
samux	0:140cdf8e2d60	46	case CDC_GET_LINE_CODING:
samux	0:140cdf8e2d60	47	transfer->remaining = 7;
samux	0:140cdf8e2d60	48	transfer->ptr = cdc_line_coding;
samux	0:140cdf8e2d60	49	transfer->direction = DEVICE_TO_HOST;
samux	0:140cdf8e2d60	50	success = true;
samux	0:140cdf8e2d60	51	break;
samux	0:140cdf8e2d60	52	case CDC_SET_LINE_CODING:
samux	0:140cdf8e2d60	53	transfer->remaining = 7;
samux	0:140cdf8e2d60	54	success = true;
samux	0:140cdf8e2d60	55	break;
samux	0:140cdf8e2d60	56	case CDC_SET_CONTROL_LINE_STATE:
samux	0:140cdf8e2d60	57	success = true;
samux	0:140cdf8e2d60	58	break;
samux	0:140cdf8e2d60	59	default:
samux	0:140cdf8e2d60	60	break;
samux	0:140cdf8e2d60	61	}
samux	0:140cdf8e2d60	62	}
samux	0:140cdf8e2d60	63
samux	0:140cdf8e2d60	64	return success;
samux	0:140cdf8e2d60	65	}
samux	0:140cdf8e2d60	66
samux	0:140cdf8e2d60	67
samux	0:140cdf8e2d60	68	// Called in ISR context
samux	0:140cdf8e2d60	69	// Set configuration. Return false if the
samux	0:140cdf8e2d60	70	// configuration is not supported.
samux	0:140cdf8e2d60	71	bool USBCDC::USBCallback_setConfiguration(uint8_t configuration) {
samux	0:140cdf8e2d60	72	if (configuration != DEFAULT_CONFIGURATION) {
samux	0:140cdf8e2d60	73	return false;
samux	0:140cdf8e2d60	74	}
samux	0:140cdf8e2d60	75
samux	0:140cdf8e2d60	76	// Configure endpoints > 0
samux	0:140cdf8e2d60	77	addEndpoint(EPINT_IN, MAX_PACKET_SIZE_EPINT);
samux	0:140cdf8e2d60	78	addEndpoint(EPBULK_IN, MAX_PACKET_SIZE_EPBULK);
samux	0:140cdf8e2d60	79	addEndpoint(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK);
samux	0:140cdf8e2d60	80
samux	0:140cdf8e2d60	81	// We activate the endpoint to be able to recceive data
samux	0:140cdf8e2d60	82	readStart(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK);
samux	0:140cdf8e2d60	83	return true;
samux	0:140cdf8e2d60	84	}
samux	0:140cdf8e2d60	85
samux	0:140cdf8e2d60	86	bool USBCDC::send(uint8_t * buffer, uint32_t size) {
samux	0:140cdf8e2d60	87	return USBDevice::write(EPBULK_IN, buffer, size, MAX_CDC_REPORT_SIZE);
samux	0:140cdf8e2d60	88	}
samux	0:140cdf8e2d60	89
samux	0:140cdf8e2d60	90	bool USBCDC::readEP(uint8_t * buffer, uint32_t * size) {
samux	0:140cdf8e2d60	91	if (!USBDevice::readEP(EPBULK_OUT, buffer, size, MAX_CDC_REPORT_SIZE))
samux	0:140cdf8e2d60	92	return false;
samux	0:140cdf8e2d60	93	if (!readStart(EPBULK_OUT, MAX_CDC_REPORT_SIZE))
samux	0:140cdf8e2d60	94	return false;
samux	0:140cdf8e2d60	95	return true;
samux	0:140cdf8e2d60	96	}
samux	0:140cdf8e2d60	97
samux	0:140cdf8e2d60	98	bool USBCDC::readEP_NB(uint8_t * buffer, uint32_t * size) {
samux	0:140cdf8e2d60	99	if (!USBDevice::readEP_NB(EPBULK_OUT, buffer, size, MAX_CDC_REPORT_SIZE))
samux	0:140cdf8e2d60	100	return false;
samux	0:140cdf8e2d60	101	if (!readStart(EPBULK_OUT, MAX_CDC_REPORT_SIZE))
samux	0:140cdf8e2d60	102	return false;
samux	0:140cdf8e2d60	103	return true;
samux	0:140cdf8e2d60	104	}
samux	0:140cdf8e2d60	105
samux	0:140cdf8e2d60	106
samux	0:140cdf8e2d60	107	uint8_t * USBCDC::deviceDesc() {
samux	0:140cdf8e2d60	108	static uint8_t deviceDescriptor[] = {
samux	0:140cdf8e2d60	109	18, // bLength
samux	0:140cdf8e2d60	110	1, // bDescriptorType
samux	0:140cdf8e2d60	111	0x10, 0x01, // bcdUSB
samux	0:140cdf8e2d60	112	2, // bDeviceClass
samux	0:140cdf8e2d60	113	0, // bDeviceSubClass
samux	0:140cdf8e2d60	114	0, // bDeviceProtocol
samux	0:140cdf8e2d60	115	MAX_PACKET_SIZE_EP0, // bMaxPacketSize0
samux	0:140cdf8e2d60	116	LSB(VENDOR_ID), MSB(VENDOR_ID), // idVendor
samux	0:140cdf8e2d60	117	LSB(PRODUCT_ID), MSB(PRODUCT_ID),// idProduct
samux	0:140cdf8e2d60	118	0x00, 0x01, // bcdDevice
samux	0:140cdf8e2d60	119	1, // iManufacturer
samux	0:140cdf8e2d60	120	2, // iProduct
samux	0:140cdf8e2d60	121	3, // iSerialNumber
samux	0:140cdf8e2d60	122	1 // bNumConfigurations
samux	0:140cdf8e2d60	123	};
samux	0:140cdf8e2d60	124	return deviceDescriptor;
samux	0:140cdf8e2d60	125	}
samux	0:140cdf8e2d60	126
samux	0:140cdf8e2d60	127	uint8_t * USBCDC::stringIinterfaceDesc() {
samux	0:140cdf8e2d60	128	static uint8_t stringIinterfaceDescriptor[] = {
samux	0:140cdf8e2d60	129	0x08,
samux	0:140cdf8e2d60	130	STRING_DESCRIPTOR,
samux	0:140cdf8e2d60	131	'C',0,'D',0,'C',0,
samux	0:140cdf8e2d60	132	};
samux	0:140cdf8e2d60	133	return stringIinterfaceDescriptor;
samux	0:140cdf8e2d60	134	}
samux	0:140cdf8e2d60	135
samux	0:140cdf8e2d60	136	uint8_t * USBCDC::stringIproductDesc() {
samux	0:140cdf8e2d60	137	static uint8_t stringIproductDescriptor[] = {
samux	0:140cdf8e2d60	138	0x16,
samux	0:140cdf8e2d60	139	STRING_DESCRIPTOR,
samux	0:140cdf8e2d60	140	'C',0,'D',0,'C',0,' ',0,'D',0,'E',0,'V',0,'I',0,'C',0,'E',0
samux	0:140cdf8e2d60	141	};
samux	0:140cdf8e2d60	142	return stringIproductDescriptor;
samux	0:140cdf8e2d60	143	}
samux	0:140cdf8e2d60	144
samux	0:140cdf8e2d60	145
samux	0:140cdf8e2d60	146	#define CONFIG1_DESC_SIZE (9+9+5+5+4+5+7+9+7+7)
samux	0:140cdf8e2d60	147
samux	0:140cdf8e2d60	148	uint8_t * USBCDC::configurationDesc() {
samux	0:140cdf8e2d60	149	static uint8_t configDescriptor[] = {
samux	0:140cdf8e2d60	150	9, // bLength;
samux	0:140cdf8e2d60	151	2, // bDescriptorType;
samux	0:140cdf8e2d60	152	LSB(CONFIG1_DESC_SIZE), // wTotalLength
samux	0:140cdf8e2d60	153	MSB(CONFIG1_DESC_SIZE),
samux	0:140cdf8e2d60	154	2, // bNumInterfaces
samux	0:140cdf8e2d60	155	1, // bConfigurationValue
samux	0:140cdf8e2d60	156	0, // iConfiguration
samux	0:140cdf8e2d60	157	0x80, // bmAttributes
samux	0:140cdf8e2d60	158	50, // bMaxPower
samux	0:140cdf8e2d60	159
samux	0:140cdf8e2d60	160	// interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
samux	0:140cdf8e2d60	161	9, // bLength
samux	0:140cdf8e2d60	162	4, // bDescriptorType
samux	0:140cdf8e2d60	163	0, // bInterfaceNumber
samux	0:140cdf8e2d60	164	0, // bAlternateSetting
samux	0:140cdf8e2d60	165	1, // bNumEndpoints
samux	0:140cdf8e2d60	166	0x02, // bInterfaceClass
samux	0:140cdf8e2d60	167	0x02, // bInterfaceSubClass
samux	0:140cdf8e2d60	168	0x01, // bInterfaceProtocol
samux	0:140cdf8e2d60	169	0, // iInterface
samux	0:140cdf8e2d60	170
samux	0:140cdf8e2d60	171	// CDC Header Functional Descriptor, CDC Spec 5.2.3.1, Table 26
samux	0:140cdf8e2d60	172	5, // bFunctionLength
samux	0:140cdf8e2d60	173	0x24, // bDescriptorType
samux	0:140cdf8e2d60	174	0x00, // bDescriptorSubtype
samux	0:140cdf8e2d60	175	0x10, 0x01, // bcdCDC
samux	0:140cdf8e2d60	176
samux	0:140cdf8e2d60	177	// Call Management Functional Descriptor, CDC Spec 5.2.3.2, Table 27
samux	0:140cdf8e2d60	178	5, // bFunctionLength
samux	0:140cdf8e2d60	179	0x24, // bDescriptorType
samux	0:140cdf8e2d60	180	0x01, // bDescriptorSubtype
samux	0:140cdf8e2d60	181	0x03, // bmCapabilities
samux	0:140cdf8e2d60	182	1, // bDataInterface
samux	0:140cdf8e2d60	183
samux	0:140cdf8e2d60	184	// Abstract Control Management Functional Descriptor, CDC Spec 5.2.3.3, Table 28
samux	0:140cdf8e2d60	185	4, // bFunctionLength
samux	0:140cdf8e2d60	186	0x24, // bDescriptorType
samux	0:140cdf8e2d60	187	0x02, // bDescriptorSubtype
samux	0:140cdf8e2d60	188	0x06, // bmCapabilities
samux	0:140cdf8e2d60	189
samux	0:140cdf8e2d60	190	// Union Functional Descriptor, CDC Spec 5.2.3.8, Table 33
samux	0:140cdf8e2d60	191	5, // bFunctionLength
samux	0:140cdf8e2d60	192	0x24, // bDescriptorType
samux	0:140cdf8e2d60	193	0x06, // bDescriptorSubtype
samux	0:140cdf8e2d60	194	0, // bMasterInterface
samux	0:140cdf8e2d60	195	1, // bSlaveInterface0
samux	0:140cdf8e2d60	196
samux	0:140cdf8e2d60	197	// endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
samux	0:140cdf8e2d60	198	ENDPOINT_DESCRIPTOR_LENGTH, // bLength
samux	0:140cdf8e2d60	199	ENDPOINT_DESCRIPTOR, // bDescriptorType
samux	0:140cdf8e2d60	200	PHY_TO_DESC(EPINT_IN), // bEndpointAddress
samux	0:140cdf8e2d60	201	E_INTERRUPT, // bmAttributes (0x03=intr)
samux	0:140cdf8e2d60	202	LSB(MAX_PACKET_SIZE_EPINT), // wMaxPacketSize (LSB)
samux	0:140cdf8e2d60	203	MSB(MAX_PACKET_SIZE_EPINT), // wMaxPacketSize (MSB)
samux	0:140cdf8e2d60	204	16, // bInterval
samux	0:140cdf8e2d60	205
samux	0:140cdf8e2d60	206
samux	0:140cdf8e2d60	207
samux	0:140cdf8e2d60	208
samux	0:140cdf8e2d60	209	// interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
samux	0:140cdf8e2d60	210	9, // bLength
samux	0:140cdf8e2d60	211	4, // bDescriptorType
samux	0:140cdf8e2d60	212	1, // bInterfaceNumber
samux	0:140cdf8e2d60	213	0, // bAlternateSetting
samux	0:140cdf8e2d60	214	2, // bNumEndpoints
samux	0:140cdf8e2d60	215	0x0A, // bInterfaceClass
samux	0:140cdf8e2d60	216	0x00, // bInterfaceSubClass
samux	0:140cdf8e2d60	217	0x00, // bInterfaceProtocol
samux	0:140cdf8e2d60	218	0, // iInterface
samux	0:140cdf8e2d60	219
samux	0:140cdf8e2d60	220	// endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
samux	0:140cdf8e2d60	221	7, // bLength
samux	0:140cdf8e2d60	222	5, // bDescriptorType
samux	0:140cdf8e2d60	223	PHY_TO_DESC(EPBULK_IN), // bEndpointAddress
samux	0:140cdf8e2d60	224	0x02, // bmAttributes (0x02=bulk)
samux	0:140cdf8e2d60	225	LSB(MAX_PACKET_SIZE_EPBULK), // wMaxPacketSize (LSB)
samux	0:140cdf8e2d60	226	MSB(MAX_PACKET_SIZE_EPBULK), // wMaxPacketSize (MSB)
samux	0:140cdf8e2d60	227	0, // bInterval
samux	0:140cdf8e2d60	228
samux	0:140cdf8e2d60	229	// endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
samux	0:140cdf8e2d60	230	7, // bLength
samux	0:140cdf8e2d60	231	5, // bDescriptorType
samux	0:140cdf8e2d60	232	PHY_TO_DESC(EPBULK_OUT),// bEndpointAddress
samux	0:140cdf8e2d60	233	0x02, // bmAttributes (0x02=bulk)
samux	0:140cdf8e2d60	234	LSB(MAX_PACKET_SIZE_EPBULK), // wMaxPacketSize (LSB)
samux	0:140cdf8e2d60	235	MSB(MAX_PACKET_SIZE_EPBULK), // wMaxPacketSize (MSB)
samux	0:140cdf8e2d60	236	0 // bInterval
samux	0:140cdf8e2d60	237	};
samux	0:140cdf8e2d60	238	return configDescriptor;
samux	0:140cdf8e2d60	239	}

Repository toolbox

Export to desktop IDE

Repository details

Type:	Library
Created:	02 Nov 2011
Imports:	753
Forks:	4
Commits:	1
Dependents:	7
Dependencies:	0
Followers:	5

This repository is Public (Unlisted).

USBSerial/USBCDC.cpp@0:140cdf8e2d60, 2012-05-30 (annotated)

Who changed what in which revision?

Repository toolbox

Repository details

Important Information for this Arm website

Access Warning