Erik - / Mbed 2 deprecated USBFileSystem_RAMDISK_HelloWorld

RAMDisk example for the USBFileSystem

Dependencies:   mbed USBFileSystem

Fork of USBFileSystem_RAMDISK_HelloWorld by Erik -

USBDevice/USBSerial/USBCDC.cpp@1:e1b0157ce547, 2013-07-30 (annotated)

Committer:
Sissors
Date:
Tue Jul 30 18:27:18 2013 +0000
Revision:
1:e1b0157ce547
Memory leaks -_-

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Sissors 1:e1b0157ce547 1 /* Copyright (c) 2010-2011 mbed.org, MIT License
Sissors 1:e1b0157ce547 2 *
Sissors 1:e1b0157ce547 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
Sissors 1:e1b0157ce547 4 * and associated documentation files (the "Software"), to deal in the Software without
Sissors 1:e1b0157ce547 5 * restriction, including without limitation the rights to use, copy, modify, merge, publish,
Sissors 1:e1b0157ce547 6 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
Sissors 1:e1b0157ce547 7 * Software is furnished to do so, subject to the following conditions:
Sissors 1:e1b0157ce547 8 *
Sissors 1:e1b0157ce547 9 * The above copyright notice and this permission notice shall be included in all copies or
Sissors 1:e1b0157ce547 10 * substantial portions of the Software.
Sissors 1:e1b0157ce547 11 *
Sissors 1:e1b0157ce547 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
Sissors 1:e1b0157ce547 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
Sissors 1:e1b0157ce547 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
Sissors 1:e1b0157ce547 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
Sissors 1:e1b0157ce547 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Sissors 1:e1b0157ce547 17 */
Sissors 1:e1b0157ce547 18
Sissors 1:e1b0157ce547 19 #include "stdint.h"
Sissors 1:e1b0157ce547 20 #include "USBCDC.h"
Sissors 1:e1b0157ce547 21
Sissors 1:e1b0157ce547 22 static uint8_t cdc_line_coding[7]= {0x80, 0x25, 0x00, 0x00, 0x00, 0x00, 0x08};
Sissors 1:e1b0157ce547 23
Sissors 1:e1b0157ce547 24 #define DEFAULT_CONFIGURATION (1)
Sissors 1:e1b0157ce547 25
Sissors 1:e1b0157ce547 26 #define CDC_SET_LINE_CODING 0x20
Sissors 1:e1b0157ce547 27 #define CDC_GET_LINE_CODING 0x21
Sissors 1:e1b0157ce547 28 #define CDC_SET_CONTROL_LINE_STATE 0x22
Sissors 1:e1b0157ce547 29
Sissors 1:e1b0157ce547 30 #define MAX_CDC_REPORT_SIZE MAX_PACKET_SIZE_EPBULK
Sissors 1:e1b0157ce547 31
Sissors 1:e1b0157ce547 32 USBCDC::USBCDC(uint16_t vendor_id, uint16_t product_id, uint16_t product_release): USBDevice(vendor_id, product_id, product_release) {
Sissors 1:e1b0157ce547 33 terminal_connected = false;
Sissors 1:e1b0157ce547 34 USBDevice::connect();
Sissors 1:e1b0157ce547 35 }
Sissors 1:e1b0157ce547 36
Sissors 1:e1b0157ce547 37 bool USBCDC::USBCallback_request(void) {
Sissors 1:e1b0157ce547 38 /* Called in ISR context */
Sissors 1:e1b0157ce547 39
Sissors 1:e1b0157ce547 40 bool success = false;
Sissors 1:e1b0157ce547 41 CONTROL_TRANSFER * transfer = getTransferPtr();
Sissors 1:e1b0157ce547 42
Sissors 1:e1b0157ce547 43 /* Process class-specific requests */
Sissors 1:e1b0157ce547 44
Sissors 1:e1b0157ce547 45 if (transfer->setup.bmRequestType.Type == CLASS_TYPE) {
Sissors 1:e1b0157ce547 46 switch (transfer->setup.bRequest) {
Sissors 1:e1b0157ce547 47 case CDC_GET_LINE_CODING:
Sissors 1:e1b0157ce547 48 transfer->remaining = 7;
Sissors 1:e1b0157ce547 49 transfer->ptr = cdc_line_coding;
Sissors 1:e1b0157ce547 50 transfer->direction = DEVICE_TO_HOST;
Sissors 1:e1b0157ce547 51 success = true;
Sissors 1:e1b0157ce547 52 break;
Sissors 1:e1b0157ce547 53 case CDC_SET_LINE_CODING:
Sissors 1:e1b0157ce547 54 transfer->remaining = 7;
Sissors 1:e1b0157ce547 55 success = true;
Sissors 1:e1b0157ce547 56 terminal_connected = true;
Sissors 1:e1b0157ce547 57 break;
Sissors 1:e1b0157ce547 58 case CDC_SET_CONTROL_LINE_STATE:
Sissors 1:e1b0157ce547 59 terminal_connected = false;
Sissors 1:e1b0157ce547 60 success = true;
Sissors 1:e1b0157ce547 61 break;
Sissors 1:e1b0157ce547 62 default:
Sissors 1:e1b0157ce547 63 break;
Sissors 1:e1b0157ce547 64 }
Sissors 1:e1b0157ce547 65 }
Sissors 1:e1b0157ce547 66
Sissors 1:e1b0157ce547 67 return success;
Sissors 1:e1b0157ce547 68 }
Sissors 1:e1b0157ce547 69
Sissors 1:e1b0157ce547 70
Sissors 1:e1b0157ce547 71 // Called in ISR context
Sissors 1:e1b0157ce547 72 // Set configuration. Return false if the
Sissors 1:e1b0157ce547 73 // configuration is not supported.
Sissors 1:e1b0157ce547 74 bool USBCDC::USBCallback_setConfiguration(uint8_t configuration) {
Sissors 1:e1b0157ce547 75 if (configuration != DEFAULT_CONFIGURATION) {
Sissors 1:e1b0157ce547 76 return false;
Sissors 1:e1b0157ce547 77 }
Sissors 1:e1b0157ce547 78
Sissors 1:e1b0157ce547 79 // Configure endpoints > 0
Sissors 1:e1b0157ce547 80 addEndpoint(EPINT_IN, MAX_PACKET_SIZE_EPINT);
Sissors 1:e1b0157ce547 81 addEndpoint(EPBULK_IN, MAX_PACKET_SIZE_EPBULK);
Sissors 1:e1b0157ce547 82 addEndpoint(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK);
Sissors 1:e1b0157ce547 83
Sissors 1:e1b0157ce547 84 // We activate the endpoint to be able to recceive data
Sissors 1:e1b0157ce547 85 readStart(EPBULK_OUT, MAX_PACKET_SIZE_EPBULK);
Sissors 1:e1b0157ce547 86 return true;
Sissors 1:e1b0157ce547 87 }
Sissors 1:e1b0157ce547 88
Sissors 1:e1b0157ce547 89 bool USBCDC::send(uint8_t * buffer, uint32_t size) {
Sissors 1:e1b0157ce547 90 return USBDevice::write(EPBULK_IN, buffer, size, MAX_CDC_REPORT_SIZE);
Sissors 1:e1b0157ce547 91 }
Sissors 1:e1b0157ce547 92
Sissors 1:e1b0157ce547 93 bool USBCDC::readEP(uint8_t * buffer, uint32_t * size) {
Sissors 1:e1b0157ce547 94 if (!USBDevice::readEP(EPBULK_OUT, buffer, size, MAX_CDC_REPORT_SIZE))
Sissors 1:e1b0157ce547 95 return false;
Sissors 1:e1b0157ce547 96 if (!readStart(EPBULK_OUT, MAX_CDC_REPORT_SIZE))
Sissors 1:e1b0157ce547 97 return false;
Sissors 1:e1b0157ce547 98 return true;
Sissors 1:e1b0157ce547 99 }
Sissors 1:e1b0157ce547 100
Sissors 1:e1b0157ce547 101 bool USBCDC::readEP_NB(uint8_t * buffer, uint32_t * size) {
Sissors 1:e1b0157ce547 102 if (!USBDevice::readEP_NB(EPBULK_OUT, buffer, size, MAX_CDC_REPORT_SIZE))
Sissors 1:e1b0157ce547 103 return false;
Sissors 1:e1b0157ce547 104 if (!readStart(EPBULK_OUT, MAX_CDC_REPORT_SIZE))
Sissors 1:e1b0157ce547 105 return false;
Sissors 1:e1b0157ce547 106 return true;
Sissors 1:e1b0157ce547 107 }
Sissors 1:e1b0157ce547 108
Sissors 1:e1b0157ce547 109
Sissors 1:e1b0157ce547 110 uint8_t * USBCDC::deviceDesc() {
Sissors 1:e1b0157ce547 111 static uint8_t deviceDescriptor[] = {
Sissors 1:e1b0157ce547 112 18, // bLength
Sissors 1:e1b0157ce547 113 1, // bDescriptorType
Sissors 1:e1b0157ce547 114 0x10, 0x01, // bcdUSB
Sissors 1:e1b0157ce547 115 2, // bDeviceClass
Sissors 1:e1b0157ce547 116 0, // bDeviceSubClass
Sissors 1:e1b0157ce547 117 0, // bDeviceProtocol
Sissors 1:e1b0157ce547 118 MAX_PACKET_SIZE_EP0, // bMaxPacketSize0
Sissors 1:e1b0157ce547 119 LSB(VENDOR_ID), MSB(VENDOR_ID), // idVendor
Sissors 1:e1b0157ce547 120 LSB(PRODUCT_ID), MSB(PRODUCT_ID),// idProduct
Sissors 1:e1b0157ce547 121 0x00, 0x01, // bcdDevice
Sissors 1:e1b0157ce547 122 1, // iManufacturer
Sissors 1:e1b0157ce547 123 2, // iProduct
Sissors 1:e1b0157ce547 124 3, // iSerialNumber
Sissors 1:e1b0157ce547 125 1 // bNumConfigurations
Sissors 1:e1b0157ce547 126 };
Sissors 1:e1b0157ce547 127 return deviceDescriptor;
Sissors 1:e1b0157ce547 128 }
Sissors 1:e1b0157ce547 129
Sissors 1:e1b0157ce547 130 uint8_t * USBCDC::stringIinterfaceDesc() {
Sissors 1:e1b0157ce547 131 static uint8_t stringIinterfaceDescriptor[] = {
Sissors 1:e1b0157ce547 132 0x08,
Sissors 1:e1b0157ce547 133 STRING_DESCRIPTOR,
Sissors 1:e1b0157ce547 134 'C',0,'D',0,'C',0,
Sissors 1:e1b0157ce547 135 };
Sissors 1:e1b0157ce547 136 return stringIinterfaceDescriptor;
Sissors 1:e1b0157ce547 137 }
Sissors 1:e1b0157ce547 138
Sissors 1:e1b0157ce547 139 uint8_t * USBCDC::stringIproductDesc() {
Sissors 1:e1b0157ce547 140 static uint8_t stringIproductDescriptor[] = {
Sissors 1:e1b0157ce547 141 0x16,
Sissors 1:e1b0157ce547 142 STRING_DESCRIPTOR,
Sissors 1:e1b0157ce547 143 'C',0,'D',0,'C',0,' ',0,'D',0,'E',0,'V',0,'I',0,'C',0,'E',0
Sissors 1:e1b0157ce547 144 };
Sissors 1:e1b0157ce547 145 return stringIproductDescriptor;
Sissors 1:e1b0157ce547 146 }
Sissors 1:e1b0157ce547 147
Sissors 1:e1b0157ce547 148
Sissors 1:e1b0157ce547 149 #define CONFIG1_DESC_SIZE (9+8+9+5+5+4+5+7+9+7+7)
Sissors 1:e1b0157ce547 150
Sissors 1:e1b0157ce547 151 uint8_t * USBCDC::configurationDesc() {
Sissors 1:e1b0157ce547 152 static uint8_t configDescriptor[] = {
Sissors 1:e1b0157ce547 153 // configuration descriptor
Sissors 1:e1b0157ce547 154 9, // bLength
Sissors 1:e1b0157ce547 155 2, // bDescriptorType
Sissors 1:e1b0157ce547 156 LSB(CONFIG1_DESC_SIZE), // wTotalLength
Sissors 1:e1b0157ce547 157 MSB(CONFIG1_DESC_SIZE),
Sissors 1:e1b0157ce547 158 2, // bNumInterfaces
Sissors 1:e1b0157ce547 159 1, // bConfigurationValue
Sissors 1:e1b0157ce547 160 0, // iConfiguration
Sissors 1:e1b0157ce547 161 0x80, // bmAttributes
Sissors 1:e1b0157ce547 162 50, // bMaxPower
Sissors 1:e1b0157ce547 163
Sissors 1:e1b0157ce547 164 // IAD to associate the two CDC interfaces
Sissors 1:e1b0157ce547 165 0x08, // bLength
Sissors 1:e1b0157ce547 166 0x0b, // bDescriptorType
Sissors 1:e1b0157ce547 167 0x00, // bFirstInterface
Sissors 1:e1b0157ce547 168 0x02, // bInterfaceCount
Sissors 1:e1b0157ce547 169 0x02, // bFunctionClass
Sissors 1:e1b0157ce547 170 0x02, // bFunctionSubClass
Sissors 1:e1b0157ce547 171 0, // bFunctionProtocol
Sissors 1:e1b0157ce547 172 0, // iFunction
Sissors 1:e1b0157ce547 173
Sissors 1:e1b0157ce547 174 // interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
Sissors 1:e1b0157ce547 175 9, // bLength
Sissors 1:e1b0157ce547 176 4, // bDescriptorType
Sissors 1:e1b0157ce547 177 0, // bInterfaceNumber
Sissors 1:e1b0157ce547 178 0, // bAlternateSetting
Sissors 1:e1b0157ce547 179 1, // bNumEndpoints
Sissors 1:e1b0157ce547 180 0x02, // bInterfaceClass
Sissors 1:e1b0157ce547 181 0x02, // bInterfaceSubClass
Sissors 1:e1b0157ce547 182 0x01, // bInterfaceProtocol
Sissors 1:e1b0157ce547 183 0, // iInterface
Sissors 1:e1b0157ce547 184
Sissors 1:e1b0157ce547 185 // CDC Header Functional Descriptor, CDC Spec 5.2.3.1, Table 26
Sissors 1:e1b0157ce547 186 5, // bFunctionLength
Sissors 1:e1b0157ce547 187 0x24, // bDescriptorType
Sissors 1:e1b0157ce547 188 0x00, // bDescriptorSubtype
Sissors 1:e1b0157ce547 189 0x10, 0x01, // bcdCDC
Sissors 1:e1b0157ce547 190
Sissors 1:e1b0157ce547 191 // Call Management Functional Descriptor, CDC Spec 5.2.3.2, Table 27
Sissors 1:e1b0157ce547 192 5, // bFunctionLength
Sissors 1:e1b0157ce547 193 0x24, // bDescriptorType
Sissors 1:e1b0157ce547 194 0x01, // bDescriptorSubtype
Sissors 1:e1b0157ce547 195 0x03, // bmCapabilities
Sissors 1:e1b0157ce547 196 1, // bDataInterface
Sissors 1:e1b0157ce547 197
Sissors 1:e1b0157ce547 198 // Abstract Control Management Functional Descriptor, CDC Spec 5.2.3.3, Table 28
Sissors 1:e1b0157ce547 199 4, // bFunctionLength
Sissors 1:e1b0157ce547 200 0x24, // bDescriptorType
Sissors 1:e1b0157ce547 201 0x02, // bDescriptorSubtype
Sissors 1:e1b0157ce547 202 0x06, // bmCapabilities
Sissors 1:e1b0157ce547 203
Sissors 1:e1b0157ce547 204 // Union Functional Descriptor, CDC Spec 5.2.3.8, Table 33
Sissors 1:e1b0157ce547 205 5, // bFunctionLength
Sissors 1:e1b0157ce547 206 0x24, // bDescriptorType
Sissors 1:e1b0157ce547 207 0x06, // bDescriptorSubtype
Sissors 1:e1b0157ce547 208 0, // bMasterInterface
Sissors 1:e1b0157ce547 209 1, // bSlaveInterface0
Sissors 1:e1b0157ce547 210
Sissors 1:e1b0157ce547 211 // endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
Sissors 1:e1b0157ce547 212 ENDPOINT_DESCRIPTOR_LENGTH, // bLength
Sissors 1:e1b0157ce547 213 ENDPOINT_DESCRIPTOR, // bDescriptorType
Sissors 1:e1b0157ce547 214 PHY_TO_DESC(EPINT_IN), // bEndpointAddress
Sissors 1:e1b0157ce547 215 E_INTERRUPT, // bmAttributes (0x03=intr)
Sissors 1:e1b0157ce547 216 LSB(MAX_PACKET_SIZE_EPINT), // wMaxPacketSize (LSB)
Sissors 1:e1b0157ce547 217 MSB(MAX_PACKET_SIZE_EPINT), // wMaxPacketSize (MSB)
Sissors 1:e1b0157ce547 218 16, // bInterval
Sissors 1:e1b0157ce547 219
Sissors 1:e1b0157ce547 220
Sissors 1:e1b0157ce547 221
Sissors 1:e1b0157ce547 222
Sissors 1:e1b0157ce547 223 // interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
Sissors 1:e1b0157ce547 224 9, // bLength
Sissors 1:e1b0157ce547 225 4, // bDescriptorType
Sissors 1:e1b0157ce547 226 1, // bInterfaceNumber
Sissors 1:e1b0157ce547 227 0, // bAlternateSetting
Sissors 1:e1b0157ce547 228 2, // bNumEndpoints
Sissors 1:e1b0157ce547 229 0x0A, // bInterfaceClass
Sissors 1:e1b0157ce547 230 0x00, // bInterfaceSubClass
Sissors 1:e1b0157ce547 231 0x00, // bInterfaceProtocol
Sissors 1:e1b0157ce547 232 0, // iInterface
Sissors 1:e1b0157ce547 233
Sissors 1:e1b0157ce547 234 // endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
Sissors 1:e1b0157ce547 235 ENDPOINT_DESCRIPTOR_LENGTH, // bLength
Sissors 1:e1b0157ce547 236 ENDPOINT_DESCRIPTOR, // bDescriptorType
Sissors 1:e1b0157ce547 237 PHY_TO_DESC(EPBULK_IN), // bEndpointAddress
Sissors 1:e1b0157ce547 238 E_BULK, // bmAttributes (0x02=bulk)
Sissors 1:e1b0157ce547 239 LSB(MAX_PACKET_SIZE_EPBULK),// wMaxPacketSize (LSB)
Sissors 1:e1b0157ce547 240 MSB(MAX_PACKET_SIZE_EPBULK),// wMaxPacketSize (MSB)
Sissors 1:e1b0157ce547 241 0, // bInterval
Sissors 1:e1b0157ce547 242
Sissors 1:e1b0157ce547 243 // endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
Sissors 1:e1b0157ce547 244 ENDPOINT_DESCRIPTOR_LENGTH, // bLength
Sissors 1:e1b0157ce547 245 ENDPOINT_DESCRIPTOR, // bDescriptorType
Sissors 1:e1b0157ce547 246 PHY_TO_DESC(EPBULK_OUT), // bEndpointAddress
Sissors 1:e1b0157ce547 247 E_BULK, // bmAttributes (0x02=bulk)
Sissors 1:e1b0157ce547 248 LSB(MAX_PACKET_SIZE_EPBULK),// wMaxPacketSize (LSB)
Sissors 1:e1b0157ce547 249 MSB(MAX_PACKET_SIZE_EPBULK),// wMaxPacketSize (MSB)
Sissors 1:e1b0157ce547 250 0 // bInterval
Sissors 1:e1b0157ce547 251 };
Sissors 1:e1b0157ce547 252 return configDescriptor;
Sissors 1:e1b0157ce547 253 }