Daniel Bartlett / USBDevice

USBDevice

Fork of USBDevice by mbed official

USBHID/USBHID.cpp@10:378e9df8157a, 2013-04-05 (annotated)

Committer:
DanBUK
Date:
Fri Apr 05 07:09:26 2013 +0000
Revision:
10:378e9df8157a
Parent:
1:80ab0d068708 
Making this look like an Apple USB keyboard, saves identification...

Who changed what in which revision?

UserRevisionLine numberNew contents of line
samux 1:80ab0d068708 1 /* Copyright (c) 2010-2011 mbed.org, MIT License
samux 1:80ab0d068708 2 *
samux 1:80ab0d068708 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
samux 1:80ab0d068708 4 * and associated documentation files (the "Software"), to deal in the Software without
samux 1:80ab0d068708 5 * restriction, including without limitation the rights to use, copy, modify, merge, publish,
samux 1:80ab0d068708 6 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
samux 1:80ab0d068708 7 * Software is furnished to do so, subject to the following conditions:
samux 1:80ab0d068708 8 *
samux 1:80ab0d068708 9 * The above copyright notice and this permission notice shall be included in all copies or
samux 1:80ab0d068708 10 * substantial portions of the Software.
samux 1:80ab0d068708 11 *
samux 1:80ab0d068708 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
samux 1:80ab0d068708 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
samux 1:80ab0d068708 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
samux 1:80ab0d068708 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
samux 1:80ab0d068708 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
samux 1:80ab0d068708 17 */
samux 1:80ab0d068708 18
samux 1:80ab0d068708 19 #include "stdint.h"
samux 1:80ab0d068708 20 #include "USBHAL.h"
samux 1:80ab0d068708 21 #include "USBHID.h"
samux 1:80ab0d068708 22
samux 1:80ab0d068708 23
samux 1:80ab0d068708 24 USBHID::USBHID(uint8_t output_report_length, uint8_t input_report_length, uint16_t vendor_id, uint16_t product_id, uint16_t product_release, bool connect): USBDevice(vendor_id, product_id, product_release)
samux 1:80ab0d068708 25 {
samux 1:80ab0d068708 26 output_length = output_report_length;
samux 1:80ab0d068708 27 input_length = input_report_length;
samux 1:80ab0d068708 28 if(connect) {
samux 1:80ab0d068708 29 USBDevice::connect();
samux 1:80ab0d068708 30 }
samux 1:80ab0d068708 31 }
samux 1:80ab0d068708 32
samux 1:80ab0d068708 33
samux 1:80ab0d068708 34 bool USBHID::send(HID_REPORT *report)
samux 1:80ab0d068708 35 {
samux 1:80ab0d068708 36 return write(EPINT_IN, report->data, report->length, MAX_HID_REPORT_SIZE);
samux 1:80ab0d068708 37 }
samux 1:80ab0d068708 38
samux 1:80ab0d068708 39 bool USBHID::sendNB(HID_REPORT *report)
samux 1:80ab0d068708 40 {
samux 1:80ab0d068708 41 return writeNB(EPINT_IN, report->data, report->length, MAX_HID_REPORT_SIZE);
samux 1:80ab0d068708 42 }
samux 1:80ab0d068708 43
samux 1:80ab0d068708 44
samux 1:80ab0d068708 45 bool USBHID::read(HID_REPORT *report)
samux 1:80ab0d068708 46 {
samux 1:80ab0d068708 47 uint32_t bytesRead = 0;
samux 1:80ab0d068708 48 bool result;
samux 1:80ab0d068708 49 result = USBDevice::readEP(EPINT_OUT, report->data, &bytesRead, MAX_HID_REPORT_SIZE);
samux 1:80ab0d068708 50 if(!readStart(EPINT_OUT, MAX_HID_REPORT_SIZE))
samux 1:80ab0d068708 51 return false;
samux 1:80ab0d068708 52 report->length = bytesRead;
samux 1:80ab0d068708 53 return result;
samux 1:80ab0d068708 54 }
samux 1:80ab0d068708 55
samux 1:80ab0d068708 56
samux 1:80ab0d068708 57 bool USBHID::readNB(HID_REPORT *report)
samux 1:80ab0d068708 58 {
samux 1:80ab0d068708 59 uint32_t bytesRead = 0;
samux 1:80ab0d068708 60 bool result;
samux 1:80ab0d068708 61 result = USBDevice::readEP_NB(EPINT_OUT, report->data, &bytesRead, MAX_HID_REPORT_SIZE);
samux 1:80ab0d068708 62 report->length = bytesRead;
samux 1:80ab0d068708 63 if(!readStart(EPINT_OUT, MAX_HID_REPORT_SIZE))
samux 1:80ab0d068708 64 return false;
samux 1:80ab0d068708 65 return result;
samux 1:80ab0d068708 66 }
samux 1:80ab0d068708 67
samux 1:80ab0d068708 68
samux 1:80ab0d068708 69 uint16_t USBHID::reportDescLength() {
samux 1:80ab0d068708 70 reportDesc();
samux 1:80ab0d068708 71 return reportLength;
samux 1:80ab0d068708 72 }
samux 1:80ab0d068708 73
samux 1:80ab0d068708 74
samux 1:80ab0d068708 75
samux 1:80ab0d068708 76 //
samux 1:80ab0d068708 77 // Route callbacks from lower layers to class(es)
samux 1:80ab0d068708 78 //
samux 1:80ab0d068708 79
samux 1:80ab0d068708 80
samux 1:80ab0d068708 81 // Called in ISR context
samux 1:80ab0d068708 82 // Called by USBDevice on Endpoint0 request
samux 1:80ab0d068708 83 // This is used to handle extensions to standard requests
samux 1:80ab0d068708 84 // and class specific requests
samux 1:80ab0d068708 85 // Return true if class handles this request
samux 1:80ab0d068708 86 bool USBHID::USBCallback_request() {
samux 1:80ab0d068708 87 bool success = false;
samux 1:80ab0d068708 88 CONTROL_TRANSFER * transfer = getTransferPtr();
samux 1:80ab0d068708 89 uint8_t *hidDescriptor;
samux 1:80ab0d068708 90
samux 1:80ab0d068708 91 // Process additional standard requests
samux 1:80ab0d068708 92
samux 1:80ab0d068708 93 if ((transfer->setup.bmRequestType.Type == STANDARD_TYPE))
samux 1:80ab0d068708 94 {
samux 1:80ab0d068708 95 switch (transfer->setup.bRequest)
samux 1:80ab0d068708 96 {
samux 1:80ab0d068708 97 case GET_DESCRIPTOR:
samux 1:80ab0d068708 98 switch (DESCRIPTOR_TYPE(transfer->setup.wValue))
samux 1:80ab0d068708 99 {
samux 1:80ab0d068708 100 case REPORT_DESCRIPTOR:
samux 1:80ab0d068708 101 if ((reportDesc() != NULL) \
samux 1:80ab0d068708 102 && (reportDescLength() != 0))
samux 1:80ab0d068708 103 {
samux 1:80ab0d068708 104 transfer->remaining = reportDescLength();
samux 1:80ab0d068708 105 transfer->ptr = reportDesc();
samux 1:80ab0d068708 106 transfer->direction = DEVICE_TO_HOST;
samux 1:80ab0d068708 107 success = true;
samux 1:80ab0d068708 108 }
samux 1:80ab0d068708 109 break;
samux 1:80ab0d068708 110 case HID_DESCRIPTOR:
samux 1:80ab0d068708 111 // Find the HID descriptor, after the configuration descriptor
samux 1:80ab0d068708 112 hidDescriptor = findDescriptor(HID_DESCRIPTOR);
samux 1:80ab0d068708 113 if (hidDescriptor != NULL)
samux 1:80ab0d068708 114 {
samux 1:80ab0d068708 115 transfer->remaining = HID_DESCRIPTOR_LENGTH;
samux 1:80ab0d068708 116 transfer->ptr = hidDescriptor;
samux 1:80ab0d068708 117 transfer->direction = DEVICE_TO_HOST;
samux 1:80ab0d068708 118 success = true;
samux 1:80ab0d068708 119 }
samux 1:80ab0d068708 120 break;
samux 1:80ab0d068708 121
samux 1:80ab0d068708 122 default:
samux 1:80ab0d068708 123 break;
samux 1:80ab0d068708 124 }
samux 1:80ab0d068708 125 break;
samux 1:80ab0d068708 126 default:
samux 1:80ab0d068708 127 break;
samux 1:80ab0d068708 128 }
samux 1:80ab0d068708 129 }
samux 1:80ab0d068708 130
samux 1:80ab0d068708 131 // Process class-specific requests
samux 1:80ab0d068708 132
samux 1:80ab0d068708 133 if (transfer->setup.bmRequestType.Type == CLASS_TYPE)
samux 1:80ab0d068708 134 {
samux 1:80ab0d068708 135 switch (transfer->setup.bRequest)
samux 1:80ab0d068708 136 {
samux 1:80ab0d068708 137 case SET_REPORT:
samux 1:80ab0d068708 138 // First byte will be used for report ID
samux 1:80ab0d068708 139 outputReport.data[0] = transfer->setup.wValue & 0xff;
samux 1:80ab0d068708 140 outputReport.length = transfer->setup.wLength + 1;
samux 1:80ab0d068708 141
samux 1:80ab0d068708 142 transfer->remaining = sizeof(outputReport.data) - 1;
samux 1:80ab0d068708 143 transfer->ptr = &outputReport.data[1];
samux 1:80ab0d068708 144 transfer->direction = HOST_TO_DEVICE;
samux 1:80ab0d068708 145 transfer->notify = true;
samux 1:80ab0d068708 146 success = true;
samux 1:80ab0d068708 147 default:
samux 1:80ab0d068708 148 break;
samux 1:80ab0d068708 149 }
samux 1:80ab0d068708 150 }
samux 1:80ab0d068708 151
samux 1:80ab0d068708 152 return success;
samux 1:80ab0d068708 153 }
samux 1:80ab0d068708 154
samux 1:80ab0d068708 155
samux 1:80ab0d068708 156 #define DEFAULT_CONFIGURATION (1)
samux 1:80ab0d068708 157
samux 1:80ab0d068708 158
samux 1:80ab0d068708 159 // Called in ISR context
samux 1:80ab0d068708 160 // Set configuration. Return false if the
samux 1:80ab0d068708 161 // configuration is not supported
samux 1:80ab0d068708 162 bool USBHID::USBCallback_setConfiguration(uint8_t configuration) {
samux 1:80ab0d068708 163 if (configuration != DEFAULT_CONFIGURATION) {
samux 1:80ab0d068708 164 return false;
samux 1:80ab0d068708 165 }
samux 1:80ab0d068708 166
samux 1:80ab0d068708 167 // Configure endpoints > 0
samux 1:80ab0d068708 168 addEndpoint(EPINT_IN, MAX_PACKET_SIZE_EPINT);
samux 1:80ab0d068708 169 addEndpoint(EPINT_OUT, MAX_PACKET_SIZE_EPINT);
samux 1:80ab0d068708 170
samux 1:80ab0d068708 171 // We activate the endpoint to be able to recceive data
samux 1:80ab0d068708 172 readStart(EPINT_OUT, MAX_PACKET_SIZE_EPINT);
samux 1:80ab0d068708 173 return true;
samux 1:80ab0d068708 174 }
samux 1:80ab0d068708 175
samux 1:80ab0d068708 176
samux 1:80ab0d068708 177 uint8_t * USBHID::stringIinterfaceDesc() {
samux 1:80ab0d068708 178 static uint8_t stringIinterfaceDescriptor[] = {
samux 1:80ab0d068708 179 0x08, //bLength
samux 1:80ab0d068708 180 STRING_DESCRIPTOR, //bDescriptorType 0x03
samux 1:80ab0d068708 181 'H',0,'I',0,'D',0, //bString iInterface - HID
samux 1:80ab0d068708 182 };
samux 1:80ab0d068708 183 return stringIinterfaceDescriptor;
samux 1:80ab0d068708 184 }
samux 1:80ab0d068708 185
samux 1:80ab0d068708 186 uint8_t * USBHID::stringIproductDesc() {
samux 1:80ab0d068708 187 static uint8_t stringIproductDescriptor[] = {
samux 1:80ab0d068708 188 0x16, //bLength
samux 1:80ab0d068708 189 STRING_DESCRIPTOR, //bDescriptorType 0x03
samux 1:80ab0d068708 190 'H',0,'I',0,'D',0,' ',0,'D',0,'E',0,'V',0,'I',0,'C',0,'E',0 //bString iProduct - HID device
samux 1:80ab0d068708 191 };
samux 1:80ab0d068708 192 return stringIproductDescriptor;
samux 1:80ab0d068708 193 }
samux 1:80ab0d068708 194
samux 1:80ab0d068708 195
samux 1:80ab0d068708 196
samux 1:80ab0d068708 197 uint8_t * USBHID::reportDesc() {
samux 1:80ab0d068708 198 static uint8_t reportDescriptor[] = {
samux 1:80ab0d068708 199 0x06, LSB(0xFFAB), MSB(0xFFAB),
samux 1:80ab0d068708 200 0x0A, LSB(0x0200), MSB(0x0200),
samux 1:80ab0d068708 201 0xA1, 0x01, // Collection 0x01
samux 1:80ab0d068708 202 0x75, 0x08, // report size = 8 bits
samux 1:80ab0d068708 203 0x15, 0x00, // logical minimum = 0
samux 1:80ab0d068708 204 0x26, 0xFF, 0x00, // logical maximum = 255
samux 1:80ab0d068708 205 0x95, input_length, // report count
samux 1:80ab0d068708 206 0x09, 0x01, // usage
samux 1:80ab0d068708 207 0x81, 0x02, // Input (array)
samux 1:80ab0d068708 208 0x95, output_length, // report count
samux 1:80ab0d068708 209 0x09, 0x02, // usage
samux 1:80ab0d068708 210 0x91, 0x02, // Output (array)
samux 1:80ab0d068708 211 0xC0 // end collection
samux 1:80ab0d068708 212
samux 1:80ab0d068708 213 };
samux 1:80ab0d068708 214 reportLength = sizeof(reportDescriptor);
samux 1:80ab0d068708 215 return reportDescriptor;
samux 1:80ab0d068708 216 }
samux 1:80ab0d068708 217
samux 1:80ab0d068708 218 #define DEFAULT_CONFIGURATION (1)
samux 1:80ab0d068708 219 #define TOTAL_DESCRIPTOR_LENGTH ((1 * CONFIGURATION_DESCRIPTOR_LENGTH) \
samux 1:80ab0d068708 220 + (1 * INTERFACE_DESCRIPTOR_LENGTH) \
samux 1:80ab0d068708 221 + (1 * HID_DESCRIPTOR_LENGTH) \
samux 1:80ab0d068708 222 + (2 * ENDPOINT_DESCRIPTOR_LENGTH))
samux 1:80ab0d068708 223
samux 1:80ab0d068708 224 uint8_t * USBHID::configurationDesc() {
samux 1:80ab0d068708 225 static uint8_t configurationDescriptor[] = {
samux 1:80ab0d068708 226 CONFIGURATION_DESCRIPTOR_LENGTH,// bLength
samux 1:80ab0d068708 227 CONFIGURATION_DESCRIPTOR, // bDescriptorType
samux 1:80ab0d068708 228 LSB(TOTAL_DESCRIPTOR_LENGTH), // wTotalLength (LSB)
samux 1:80ab0d068708 229 MSB(TOTAL_DESCRIPTOR_LENGTH), // wTotalLength (MSB)
samux 1:80ab0d068708 230 0x01, // bNumInterfaces
samux 1:80ab0d068708 231 DEFAULT_CONFIGURATION, // bConfigurationValue
samux 1:80ab0d068708 232 0x00, // iConfiguration
samux 1:80ab0d068708 233 C_RESERVED | C_SELF_POWERED, // bmAttributes
samux 1:80ab0d068708 234 C_POWER(0), // bMaxPower
samux 1:80ab0d068708 235
samux 1:80ab0d068708 236 INTERFACE_DESCRIPTOR_LENGTH, // bLength
samux 1:80ab0d068708 237 INTERFACE_DESCRIPTOR, // bDescriptorType
samux 1:80ab0d068708 238 0x00, // bInterfaceNumber
samux 1:80ab0d068708 239 0x00, // bAlternateSetting
samux 1:80ab0d068708 240 0x02, // bNumEndpoints
samux 1:80ab0d068708 241 HID_CLASS, // bInterfaceClass
samux 1:80ab0d068708 242 HID_SUBCLASS_NONE, // bInterfaceSubClass
samux 1:80ab0d068708 243 HID_PROTOCOL_NONE, // bInterfaceProtocol
samux 1:80ab0d068708 244 0x00, // iInterface
samux 1:80ab0d068708 245
samux 1:80ab0d068708 246 HID_DESCRIPTOR_LENGTH, // bLength
samux 1:80ab0d068708 247 HID_DESCRIPTOR, // bDescriptorType
samux 1:80ab0d068708 248 LSB(HID_VERSION_1_11), // bcdHID (LSB)
samux 1:80ab0d068708 249 MSB(HID_VERSION_1_11), // bcdHID (MSB)
samux 1:80ab0d068708 250 0x00, // bCountryCode
samux 1:80ab0d068708 251 0x01, // bNumDescriptors
samux 1:80ab0d068708 252 REPORT_DESCRIPTOR, // bDescriptorType
samux 1:80ab0d068708 253 LSB(this->reportDescLength()), // wDescriptorLength (LSB)
samux 1:80ab0d068708 254 MSB(this->reportDescLength()), // wDescriptorLength (MSB)
samux 1:80ab0d068708 255
samux 1:80ab0d068708 256 ENDPOINT_DESCRIPTOR_LENGTH, // bLength
samux 1:80ab0d068708 257 ENDPOINT_DESCRIPTOR, // bDescriptorType
samux 1:80ab0d068708 258 PHY_TO_DESC(EPINT_IN), // bEndpointAddress
samux 1:80ab0d068708 259 E_INTERRUPT, // bmAttributes
samux 1:80ab0d068708 260 LSB(MAX_PACKET_SIZE_EPINT), // wMaxPacketSize (LSB)
samux 1:80ab0d068708 261 MSB(MAX_PACKET_SIZE_EPINT), // wMaxPacketSize (MSB)
samux 1:80ab0d068708 262 1, // bInterval (milliseconds)
samux 1:80ab0d068708 263
samux 1:80ab0d068708 264 ENDPOINT_DESCRIPTOR_LENGTH, // bLength
samux 1:80ab0d068708 265 ENDPOINT_DESCRIPTOR, // bDescriptorType
samux 1:80ab0d068708 266 PHY_TO_DESC(EPINT_OUT), // bEndpointAddress
samux 1:80ab0d068708 267 E_INTERRUPT, // bmAttributes
samux 1:80ab0d068708 268 LSB(MAX_PACKET_SIZE_EPINT), // wMaxPacketSize (LSB)
samux 1:80ab0d068708 269 MSB(MAX_PACKET_SIZE_EPINT), // wMaxPacketSize (MSB)
samux 1:80ab0d068708 270 1, // bInterval (milliseconds)
samux 1:80ab0d068708 271 };
samux 1:80ab0d068708 272 return configurationDescriptor;
samux 1:80ab0d068708 273 }