Lee Kai Xuan / mbed-os

mbed-os

Fork of mbed-os by erkin yucel

features/unsupported/USBDevice/USBHID/USBHID.cpp@1:3deb71413561, 2017-07-20 (annotated)

Committer:
xuaner
Date:
Thu Jul 20 14:26:57 2017 +0000
Revision:
1:3deb71413561
Parent:
0:f269e3021894 
mbed_os

Who changed what in which revision?

UserRevisionLine numberNew contents of line
elessair 0:f269e3021894 1 /* Copyright (c) 2010-2011 mbed.org, MIT License
elessair 0:f269e3021894 2 *
elessair 0:f269e3021894 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
elessair 0:f269e3021894 4 * and associated documentation files (the "Software"), to deal in the Software without
elessair 0:f269e3021894 5 * restriction, including without limitation the rights to use, copy, modify, merge, publish,
elessair 0:f269e3021894 6 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
elessair 0:f269e3021894 7 * Software is furnished to do so, subject to the following conditions:
elessair 0:f269e3021894 8 *
elessair 0:f269e3021894 9 * The above copyright notice and this permission notice shall be included in all copies or
elessair 0:f269e3021894 10 * substantial portions of the Software.
elessair 0:f269e3021894 11 *
elessair 0:f269e3021894 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
elessair 0:f269e3021894 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
elessair 0:f269e3021894 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
elessair 0:f269e3021894 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
elessair 0:f269e3021894 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
elessair 0:f269e3021894 17 */
elessair 0:f269e3021894 18
elessair 0:f269e3021894 19 #include "stdint.h"
elessair 0:f269e3021894 20 #include "USBHAL.h"
elessair 0:f269e3021894 21 #include "USBHID.h"
elessair 0:f269e3021894 22
elessair 0:f269e3021894 23
elessair 0:f269e3021894 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)
elessair 0:f269e3021894 25 {
elessair 0:f269e3021894 26 output_length = output_report_length;
elessair 0:f269e3021894 27 input_length = input_report_length;
elessair 0:f269e3021894 28 if(connect) {
elessair 0:f269e3021894 29 USBDevice::connect();
elessair 0:f269e3021894 30 }
elessair 0:f269e3021894 31 }
elessair 0:f269e3021894 32
elessair 0:f269e3021894 33
elessair 0:f269e3021894 34 bool USBHID::send(HID_REPORT *report)
elessair 0:f269e3021894 35 {
elessair 0:f269e3021894 36 return write(EPINT_IN, report->data, report->length, MAX_HID_REPORT_SIZE);
elessair 0:f269e3021894 37 }
elessair 0:f269e3021894 38
elessair 0:f269e3021894 39 bool USBHID::sendNB(HID_REPORT *report)
elessair 0:f269e3021894 40 {
elessair 0:f269e3021894 41 return writeNB(EPINT_IN, report->data, report->length, MAX_HID_REPORT_SIZE);
elessair 0:f269e3021894 42 }
elessair 0:f269e3021894 43
elessair 0:f269e3021894 44
elessair 0:f269e3021894 45 bool USBHID::read(HID_REPORT *report)
elessair 0:f269e3021894 46 {
elessair 0:f269e3021894 47 uint32_t bytesRead = 0;
elessair 0:f269e3021894 48 bool result;
elessair 0:f269e3021894 49 result = USBDevice::readEP(EPINT_OUT, report->data, &bytesRead, MAX_HID_REPORT_SIZE);
elessair 0:f269e3021894 50 if(!readStart(EPINT_OUT, MAX_HID_REPORT_SIZE))
elessair 0:f269e3021894 51 return false;
elessair 0:f269e3021894 52 report->length = bytesRead;
elessair 0:f269e3021894 53 return result;
elessair 0:f269e3021894 54 }
elessair 0:f269e3021894 55
elessair 0:f269e3021894 56
elessair 0:f269e3021894 57 bool USBHID::readNB(HID_REPORT *report)
elessair 0:f269e3021894 58 {
elessair 0:f269e3021894 59 uint32_t bytesRead = 0;
elessair 0:f269e3021894 60 bool result;
elessair 0:f269e3021894 61 result = USBDevice::readEP_NB(EPINT_OUT, report->data, &bytesRead, MAX_HID_REPORT_SIZE);
elessair 0:f269e3021894 62 // if readEP_NB did not succeed, does not issue a readStart
elessair 0:f269e3021894 63 if (!result)
elessair 0:f269e3021894 64 return false;
elessair 0:f269e3021894 65 report->length = bytesRead;
elessair 0:f269e3021894 66 if(!readStart(EPINT_OUT, MAX_HID_REPORT_SIZE))
elessair 0:f269e3021894 67 return false;
elessair 0:f269e3021894 68 return result;
elessair 0:f269e3021894 69 }
elessair 0:f269e3021894 70
elessair 0:f269e3021894 71
elessair 0:f269e3021894 72 uint16_t USBHID::reportDescLength() {
elessair 0:f269e3021894 73 reportDesc();
elessair 0:f269e3021894 74 return reportLength;
elessair 0:f269e3021894 75 }
elessair 0:f269e3021894 76
elessair 0:f269e3021894 77
elessair 0:f269e3021894 78
elessair 0:f269e3021894 79 //
elessair 0:f269e3021894 80 // Route callbacks from lower layers to class(es)
elessair 0:f269e3021894 81 //
elessair 0:f269e3021894 82
elessair 0:f269e3021894 83
elessair 0:f269e3021894 84 // Called in ISR context
elessair 0:f269e3021894 85 // Called by USBDevice on Endpoint0 request
elessair 0:f269e3021894 86 // This is used to handle extensions to standard requests
elessair 0:f269e3021894 87 // and class specific requests
elessair 0:f269e3021894 88 // Return true if class handles this request
elessair 0:f269e3021894 89 bool USBHID::USBCallback_request() {
elessair 0:f269e3021894 90 bool success = false;
elessair 0:f269e3021894 91 CONTROL_TRANSFER * transfer = getTransferPtr();
elessair 0:f269e3021894 92 uint8_t *hidDescriptor;
elessair 0:f269e3021894 93
elessair 0:f269e3021894 94 // Process additional standard requests
elessair 0:f269e3021894 95
elessair 0:f269e3021894 96 if ((transfer->setup.bmRequestType.Type == STANDARD_TYPE))
elessair 0:f269e3021894 97 {
elessair 0:f269e3021894 98 switch (transfer->setup.bRequest)
elessair 0:f269e3021894 99 {
elessair 0:f269e3021894 100 case GET_DESCRIPTOR:
elessair 0:f269e3021894 101 switch (DESCRIPTOR_TYPE(transfer->setup.wValue))
elessair 0:f269e3021894 102 {
elessair 0:f269e3021894 103 case REPORT_DESCRIPTOR:
elessair 0:f269e3021894 104 if ((reportDesc() != NULL) \
elessair 0:f269e3021894 105 && (reportDescLength() != 0))
elessair 0:f269e3021894 106 {
elessair 0:f269e3021894 107 transfer->remaining = reportDescLength();
elessair 0:f269e3021894 108 transfer->ptr = reportDesc();
elessair 0:f269e3021894 109 transfer->direction = DEVICE_TO_HOST;
elessair 0:f269e3021894 110 success = true;
elessair 0:f269e3021894 111 }
elessair 0:f269e3021894 112 break;
elessair 0:f269e3021894 113 case HID_DESCRIPTOR:
elessair 0:f269e3021894 114 // Find the HID descriptor, after the configuration descriptor
elessair 0:f269e3021894 115 hidDescriptor = findDescriptor(HID_DESCRIPTOR);
elessair 0:f269e3021894 116 if (hidDescriptor != NULL)
elessair 0:f269e3021894 117 {
elessair 0:f269e3021894 118 transfer->remaining = HID_DESCRIPTOR_LENGTH;
elessair 0:f269e3021894 119 transfer->ptr = hidDescriptor;
elessair 0:f269e3021894 120 transfer->direction = DEVICE_TO_HOST;
elessair 0:f269e3021894 121 success = true;
elessair 0:f269e3021894 122 }
elessair 0:f269e3021894 123 break;
elessair 0:f269e3021894 124
elessair 0:f269e3021894 125 default:
elessair 0:f269e3021894 126 break;
elessair 0:f269e3021894 127 }
elessair 0:f269e3021894 128 break;
elessair 0:f269e3021894 129 default:
elessair 0:f269e3021894 130 break;
elessair 0:f269e3021894 131 }
elessair 0:f269e3021894 132 }
elessair 0:f269e3021894 133
elessair 0:f269e3021894 134 // Process class-specific requests
elessair 0:f269e3021894 135
elessair 0:f269e3021894 136 if (transfer->setup.bmRequestType.Type == CLASS_TYPE)
elessair 0:f269e3021894 137 {
elessair 0:f269e3021894 138 switch (transfer->setup.bRequest)
elessair 0:f269e3021894 139 {
elessair 0:f269e3021894 140 case SET_REPORT:
elessair 0:f269e3021894 141 // First byte will be used for report ID
elessair 0:f269e3021894 142 outputReport.data[0] = transfer->setup.wValue & 0xff;
elessair 0:f269e3021894 143 outputReport.length = transfer->setup.wLength + 1;
elessair 0:f269e3021894 144
elessair 0:f269e3021894 145 transfer->remaining = sizeof(outputReport.data) - 1;
elessair 0:f269e3021894 146 transfer->ptr = &outputReport.data[1];
elessair 0:f269e3021894 147 transfer->direction = HOST_TO_DEVICE;
elessair 0:f269e3021894 148 transfer->notify = true;
elessair 0:f269e3021894 149 success = true;
elessair 0:f269e3021894 150 default:
elessair 0:f269e3021894 151 break;
elessair 0:f269e3021894 152 }
elessair 0:f269e3021894 153 }
elessair 0:f269e3021894 154
elessair 0:f269e3021894 155 return success;
elessair 0:f269e3021894 156 }
elessair 0:f269e3021894 157
elessair 0:f269e3021894 158
elessair 0:f269e3021894 159 #define DEFAULT_CONFIGURATION (1)
elessair 0:f269e3021894 160
elessair 0:f269e3021894 161
elessair 0:f269e3021894 162 // Called in ISR context
elessair 0:f269e3021894 163 // Set configuration. Return false if the
elessair 0:f269e3021894 164 // configuration is not supported
elessair 0:f269e3021894 165 bool USBHID::USBCallback_setConfiguration(uint8_t configuration) {
elessair 0:f269e3021894 166 if (configuration != DEFAULT_CONFIGURATION) {
elessair 0:f269e3021894 167 return false;
elessair 0:f269e3021894 168 }
elessair 0:f269e3021894 169
elessair 0:f269e3021894 170 // Configure endpoints > 0
elessair 0:f269e3021894 171 addEndpoint(EPINT_IN, MAX_PACKET_SIZE_EPINT);
elessair 0:f269e3021894 172 addEndpoint(EPINT_OUT, MAX_PACKET_SIZE_EPINT);
elessair 0:f269e3021894 173
elessair 0:f269e3021894 174 // We activate the endpoint to be able to recceive data
elessair 0:f269e3021894 175 readStart(EPINT_OUT, MAX_PACKET_SIZE_EPINT);
elessair 0:f269e3021894 176 return true;
elessair 0:f269e3021894 177 }
elessair 0:f269e3021894 178
elessair 0:f269e3021894 179
elessair 0:f269e3021894 180 uint8_t * USBHID::stringIinterfaceDesc() {
elessair 0:f269e3021894 181 static uint8_t stringIinterfaceDescriptor[] = {
elessair 0:f269e3021894 182 0x08, //bLength
elessair 0:f269e3021894 183 STRING_DESCRIPTOR, //bDescriptorType 0x03
elessair 0:f269e3021894 184 'H',0,'I',0,'D',0, //bString iInterface - HID
elessair 0:f269e3021894 185 };
elessair 0:f269e3021894 186 return stringIinterfaceDescriptor;
elessair 0:f269e3021894 187 }
elessair 0:f269e3021894 188
elessair 0:f269e3021894 189 uint8_t * USBHID::stringIproductDesc() {
elessair 0:f269e3021894 190 static uint8_t stringIproductDescriptor[] = {
elessair 0:f269e3021894 191 0x16, //bLength
elessair 0:f269e3021894 192 STRING_DESCRIPTOR, //bDescriptorType 0x03
elessair 0:f269e3021894 193 'H',0,'I',0,'D',0,' ',0,'D',0,'E',0,'V',0,'I',0,'C',0,'E',0 //bString iProduct - HID device
elessair 0:f269e3021894 194 };
elessair 0:f269e3021894 195 return stringIproductDescriptor;
elessair 0:f269e3021894 196 }
elessair 0:f269e3021894 197
elessair 0:f269e3021894 198
elessair 0:f269e3021894 199
elessair 0:f269e3021894 200 uint8_t * USBHID::reportDesc() {
elessair 0:f269e3021894 201 static uint8_t reportDescriptor[] = {
elessair 0:f269e3021894 202 0x06, LSB(0xFFAB), MSB(0xFFAB),
elessair 0:f269e3021894 203 0x0A, LSB(0x0200), MSB(0x0200),
elessair 0:f269e3021894 204 0xA1, 0x01, // Collection 0x01
elessair 0:f269e3021894 205 0x75, 0x08, // report size = 8 bits
elessair 0:f269e3021894 206 0x15, 0x00, // logical minimum = 0
elessair 0:f269e3021894 207 0x26, 0xFF, 0x00, // logical maximum = 255
elessair 0:f269e3021894 208 0x95, input_length, // report count
elessair 0:f269e3021894 209 0x09, 0x01, // usage
elessair 0:f269e3021894 210 0x81, 0x02, // Input (array)
elessair 0:f269e3021894 211 0x95, output_length,// report count
elessair 0:f269e3021894 212 0x09, 0x02, // usage
elessair 0:f269e3021894 213 0x91, 0x02, // Output (array)
elessair 0:f269e3021894 214 0xC0 // end collection
elessair 0:f269e3021894 215
elessair 0:f269e3021894 216 };
elessair 0:f269e3021894 217 reportLength = sizeof(reportDescriptor);
elessair 0:f269e3021894 218 return reportDescriptor;
elessair 0:f269e3021894 219 }
elessair 0:f269e3021894 220
elessair 0:f269e3021894 221 #define DEFAULT_CONFIGURATION (1)
elessair 0:f269e3021894 222 #define TOTAL_DESCRIPTOR_LENGTH ((1 * CONFIGURATION_DESCRIPTOR_LENGTH) \
elessair 0:f269e3021894 223 + (1 * INTERFACE_DESCRIPTOR_LENGTH) \
elessair 0:f269e3021894 224 + (1 * HID_DESCRIPTOR_LENGTH) \
elessair 0:f269e3021894 225 + (2 * ENDPOINT_DESCRIPTOR_LENGTH))
elessair 0:f269e3021894 226
elessair 0:f269e3021894 227 uint8_t * USBHID::configurationDesc() {
elessair 0:f269e3021894 228 static uint8_t configurationDescriptor[] = {
elessair 0:f269e3021894 229 CONFIGURATION_DESCRIPTOR_LENGTH,// bLength
elessair 0:f269e3021894 230 CONFIGURATION_DESCRIPTOR, // bDescriptorType
elessair 0:f269e3021894 231 LSB(TOTAL_DESCRIPTOR_LENGTH), // wTotalLength (LSB)
elessair 0:f269e3021894 232 MSB(TOTAL_DESCRIPTOR_LENGTH), // wTotalLength (MSB)
elessair 0:f269e3021894 233 0x01, // bNumInterfaces
elessair 0:f269e3021894 234 DEFAULT_CONFIGURATION, // bConfigurationValue
elessair 0:f269e3021894 235 0x00, // iConfiguration
elessair 0:f269e3021894 236 C_RESERVED | C_SELF_POWERED, // bmAttributes
elessair 0:f269e3021894 237 C_POWER(0), // bMaxPower
elessair 0:f269e3021894 238
elessair 0:f269e3021894 239 INTERFACE_DESCRIPTOR_LENGTH, // bLength
elessair 0:f269e3021894 240 INTERFACE_DESCRIPTOR, // bDescriptorType
elessair 0:f269e3021894 241 0x00, // bInterfaceNumber
elessair 0:f269e3021894 242 0x00, // bAlternateSetting
elessair 0:f269e3021894 243 0x02, // bNumEndpoints
elessair 0:f269e3021894 244 HID_CLASS, // bInterfaceClass
elessair 0:f269e3021894 245 HID_SUBCLASS_NONE, // bInterfaceSubClass
elessair 0:f269e3021894 246 HID_PROTOCOL_NONE, // bInterfaceProtocol
elessair 0:f269e3021894 247 0x00, // iInterface
elessair 0:f269e3021894 248
elessair 0:f269e3021894 249 HID_DESCRIPTOR_LENGTH, // bLength
elessair 0:f269e3021894 250 HID_DESCRIPTOR, // bDescriptorType
elessair 0:f269e3021894 251 LSB(HID_VERSION_1_11), // bcdHID (LSB)
elessair 0:f269e3021894 252 MSB(HID_VERSION_1_11), // bcdHID (MSB)
elessair 0:f269e3021894 253 0x00, // bCountryCode
elessair 0:f269e3021894 254 0x01, // bNumDescriptors
elessair 0:f269e3021894 255 REPORT_DESCRIPTOR, // bDescriptorType
elessair 0:f269e3021894 256 (uint8_t)(LSB(this->reportDescLength())), // wDescriptorLength (LSB)
elessair 0:f269e3021894 257 (uint8_t)(MSB(this->reportDescLength())), // wDescriptorLength (MSB)
elessair 0:f269e3021894 258
elessair 0:f269e3021894 259 ENDPOINT_DESCRIPTOR_LENGTH, // bLength
elessair 0:f269e3021894 260 ENDPOINT_DESCRIPTOR, // bDescriptorType
elessair 0:f269e3021894 261 PHY_TO_DESC(EPINT_IN), // bEndpointAddress
elessair 0:f269e3021894 262 E_INTERRUPT, // bmAttributes
elessair 0:f269e3021894 263 LSB(MAX_PACKET_SIZE_EPINT), // wMaxPacketSize (LSB)
elessair 0:f269e3021894 264 MSB(MAX_PACKET_SIZE_EPINT), // wMaxPacketSize (MSB)
elessair 0:f269e3021894 265 1, // bInterval (milliseconds)
elessair 0:f269e3021894 266
elessair 0:f269e3021894 267 ENDPOINT_DESCRIPTOR_LENGTH, // bLength
elessair 0:f269e3021894 268 ENDPOINT_DESCRIPTOR, // bDescriptorType
elessair 0:f269e3021894 269 PHY_TO_DESC(EPINT_OUT), // bEndpointAddress
elessair 0:f269e3021894 270 E_INTERRUPT, // bmAttributes
elessair 0:f269e3021894 271 LSB(MAX_PACKET_SIZE_EPINT), // wMaxPacketSize (LSB)
elessair 0:f269e3021894 272 MSB(MAX_PACKET_SIZE_EPINT), // wMaxPacketSize (MSB)
elessair 0:f269e3021894 273 1, // bInterval (milliseconds)
elessair 0:f269e3021894 274 };
elessair 0:f269e3021894 275 return configurationDescriptor;
elessair 0:f269e3021894 276 }