Geir Inge Tellnes / STM32_USBDevice

Fork of https://developer.mbed.org/users/bscott/code/STM32_USBDevice/

Fork of STM32_USBDevice by Bradley Scott

USBDevice/USBHAL_LPC17.cpp@79:d28244984385, 2018-07-25 (annotated)

Committer:
Troels Nilsson
Date:
Wed Jul 25 14:04:48 2018 +0200
Revision:
79:d28244984385
Parent:
76:eef92651f52f 
Merge feature_WebUSB into default

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
mbed_official 55:c7fd9d44ec8e 19 #if defined(TARGET_LPC1768) || defined(TARGET_LPC2368) || defined(TARGET_LPC2460)
samux 1:80ab0d068708 20
samux 1:80ab0d068708 21 #include "USBHAL.h"
samux 1:80ab0d068708 22
samux 1:80ab0d068708 23
samux 1:80ab0d068708 24 // Get endpoint direction
samux 1:80ab0d068708 25 #define IN_EP(endpoint) ((endpoint) & 1U ? true : false)
samux 1:80ab0d068708 26 #define OUT_EP(endpoint) ((endpoint) & 1U ? false : true)
samux 1:80ab0d068708 27
samux 1:80ab0d068708 28 // Convert physical endpoint number to register bit
samux 1:80ab0d068708 29 #define EP(endpoint) (1UL<<endpoint)
samux 1:80ab0d068708 30
samux 1:80ab0d068708 31 // Power Control for Peripherals register
samux 1:80ab0d068708 32 #define PCUSB (1UL<<31)
samux 1:80ab0d068708 33
samux 1:80ab0d068708 34 // USB Clock Control register
samux 1:80ab0d068708 35 #define DEV_CLK_EN (1UL<<1)
samux 1:80ab0d068708 36 #define AHB_CLK_EN (1UL<<4)
samux 1:80ab0d068708 37
samux 1:80ab0d068708 38 // USB Clock Status register
samux 1:80ab0d068708 39 #define DEV_CLK_ON (1UL<<1)
samux 1:80ab0d068708 40 #define AHB_CLK_ON (1UL<<4)
samux 1:80ab0d068708 41
samux 1:80ab0d068708 42 // USB Device Interupt registers
samux 1:80ab0d068708 43 #define FRAME (1UL<<0)
samux 1:80ab0d068708 44 #define EP_FAST (1UL<<1)
samux 1:80ab0d068708 45 #define EP_SLOW (1UL<<2)
samux 1:80ab0d068708 46 #define DEV_STAT (1UL<<3)
samux 1:80ab0d068708 47 #define CCEMPTY (1UL<<4)
samux 1:80ab0d068708 48 #define CDFULL (1UL<<5)
samux 1:80ab0d068708 49 #define RxENDPKT (1UL<<6)
samux 1:80ab0d068708 50 #define TxENDPKT (1UL<<7)
samux 1:80ab0d068708 51 #define EP_RLZED (1UL<<8)
samux 1:80ab0d068708 52 #define ERR_INT (1UL<<9)
samux 1:80ab0d068708 53
samux 1:80ab0d068708 54 // USB Control register
samux 1:80ab0d068708 55 #define RD_EN (1<<0)
samux 1:80ab0d068708 56 #define WR_EN (1<<1)
samux 1:80ab0d068708 57 #define LOG_ENDPOINT(endpoint) ((endpoint>>1)<<2)
samux 1:80ab0d068708 58
samux 1:80ab0d068708 59 // USB Receive Packet Length register
samux 1:80ab0d068708 60 #define DV (1UL<<10)
samux 1:80ab0d068708 61 #define PKT_RDY (1UL<<11)
samux 1:80ab0d068708 62 #define PKT_LNGTH_MASK (0x3ff)
samux 1:80ab0d068708 63
samux 1:80ab0d068708 64 // Serial Interface Engine (SIE)
samux 1:80ab0d068708 65 #define SIE_WRITE (0x01)
samux 1:80ab0d068708 66 #define SIE_READ (0x02)
samux 1:80ab0d068708 67 #define SIE_COMMAND (0x05)
samux 1:80ab0d068708 68 #define SIE_CMD_CODE(phase, data) ((phase<<8)|(data<<16))
samux 1:80ab0d068708 69
samux 1:80ab0d068708 70 // SIE Command codes
samux 1:80ab0d068708 71 #define SIE_CMD_SET_ADDRESS (0xD0)
samux 1:80ab0d068708 72 #define SIE_CMD_CONFIGURE_DEVICE (0xD8)
samux 1:80ab0d068708 73 #define SIE_CMD_SET_MODE (0xF3)
samux 1:80ab0d068708 74 #define SIE_CMD_READ_FRAME_NUMBER (0xF5)
samux 1:80ab0d068708 75 #define SIE_CMD_READ_TEST_REGISTER (0xFD)
samux 1:80ab0d068708 76 #define SIE_CMD_SET_DEVICE_STATUS (0xFE)
samux 1:80ab0d068708 77 #define SIE_CMD_GET_DEVICE_STATUS (0xFE)
samux 1:80ab0d068708 78 #define SIE_CMD_GET_ERROR_CODE (0xFF)
samux 1:80ab0d068708 79 #define SIE_CMD_READ_ERROR_STATUS (0xFB)
samux 1:80ab0d068708 80
samux 1:80ab0d068708 81 #define SIE_CMD_SELECT_ENDPOINT(endpoint) (0x00+endpoint)
samux 1:80ab0d068708 82 #define SIE_CMD_SELECT_ENDPOINT_CLEAR_INTERRUPT(endpoint) (0x40+endpoint)
samux 1:80ab0d068708 83 #define SIE_CMD_SET_ENDPOINT_STATUS(endpoint) (0x40+endpoint)
samux 1:80ab0d068708 84
samux 1:80ab0d068708 85 #define SIE_CMD_CLEAR_BUFFER (0xF2)
samux 1:80ab0d068708 86 #define SIE_CMD_VALIDATE_BUFFER (0xFA)
samux 1:80ab0d068708 87
samux 1:80ab0d068708 88 // SIE Device Status register
samux 1:80ab0d068708 89 #define SIE_DS_CON (1<<0)
samux 1:80ab0d068708 90 #define SIE_DS_CON_CH (1<<1)
samux 1:80ab0d068708 91 #define SIE_DS_SUS (1<<2)
samux 1:80ab0d068708 92 #define SIE_DS_SUS_CH (1<<3)
samux 1:80ab0d068708 93 #define SIE_DS_RST (1<<4)
samux 1:80ab0d068708 94
samux 1:80ab0d068708 95 // SIE Device Set Address register
samux 1:80ab0d068708 96 #define SIE_DSA_DEV_EN (1<<7)
samux 1:80ab0d068708 97
samux 1:80ab0d068708 98 // SIE Configue Device register
samux 1:80ab0d068708 99 #define SIE_CONF_DEVICE (1<<0)
samux 1:80ab0d068708 100
samux 1:80ab0d068708 101 // Select Endpoint register
samux 1:80ab0d068708 102 #define SIE_SE_FE (1<<0)
samux 1:80ab0d068708 103 #define SIE_SE_ST (1<<1)
samux 1:80ab0d068708 104 #define SIE_SE_STP (1<<2)
samux 1:80ab0d068708 105 #define SIE_SE_PO (1<<3)
samux 1:80ab0d068708 106 #define SIE_SE_EPN (1<<4)
samux 1:80ab0d068708 107 #define SIE_SE_B_1_FULL (1<<5)
samux 1:80ab0d068708 108 #define SIE_SE_B_2_FULL (1<<6)
samux 1:80ab0d068708 109
samux 1:80ab0d068708 110 // Set Endpoint Status command
samux 1:80ab0d068708 111 #define SIE_SES_ST (1<<0)
samux 1:80ab0d068708 112 #define SIE_SES_DA (1<<5)
samux 1:80ab0d068708 113 #define SIE_SES_RF_MO (1<<6)
samux 1:80ab0d068708 114 #define SIE_SES_CND_ST (1<<7)
samux 1:80ab0d068708 115
samux 1:80ab0d068708 116
samux 1:80ab0d068708 117 USBHAL * USBHAL::instance;
samux 1:80ab0d068708 118
samux 8:335f2506f422 119 static volatile int epComplete;
samux 8:335f2506f422 120 static uint32_t endpointStallState;
samux 1:80ab0d068708 121
samux 1:80ab0d068708 122 static void SIECommand(uint32_t command) {
samux 1:80ab0d068708 123 // The command phase of a SIE transaction
samux 1:80ab0d068708 124 LPC_USB->USBDevIntClr = CCEMPTY;
samux 1:80ab0d068708 125 LPC_USB->USBCmdCode = SIE_CMD_CODE(SIE_COMMAND, command);
samux 1:80ab0d068708 126 while (!(LPC_USB->USBDevIntSt & CCEMPTY));
samux 1:80ab0d068708 127 }
samux 1:80ab0d068708 128
samux 1:80ab0d068708 129 static void SIEWriteData(uint8_t data) {
samux 1:80ab0d068708 130 // The data write phase of a SIE transaction
samux 1:80ab0d068708 131 LPC_USB->USBDevIntClr = CCEMPTY;
samux 1:80ab0d068708 132 LPC_USB->USBCmdCode = SIE_CMD_CODE(SIE_WRITE, data);
samux 1:80ab0d068708 133 while (!(LPC_USB->USBDevIntSt & CCEMPTY));
samux 1:80ab0d068708 134 }
samux 1:80ab0d068708 135
samux 1:80ab0d068708 136 static uint8_t SIEReadData(uint32_t command) {
samux 1:80ab0d068708 137 // The data read phase of a SIE transaction
samux 1:80ab0d068708 138 LPC_USB->USBDevIntClr = CDFULL;
samux 1:80ab0d068708 139 LPC_USB->USBCmdCode = SIE_CMD_CODE(SIE_READ, command);
samux 1:80ab0d068708 140 while (!(LPC_USB->USBDevIntSt & CDFULL));
samux 1:80ab0d068708 141 return (uint8_t)LPC_USB->USBCmdData;
samux 1:80ab0d068708 142 }
samux 1:80ab0d068708 143
samux 1:80ab0d068708 144 static void SIEsetDeviceStatus(uint8_t status) {
samux 1:80ab0d068708 145 // Write SIE device status register
samux 1:80ab0d068708 146 SIECommand(SIE_CMD_SET_DEVICE_STATUS);
samux 1:80ab0d068708 147 SIEWriteData(status);
samux 1:80ab0d068708 148 }
samux 1:80ab0d068708 149
samux 1:80ab0d068708 150 static uint8_t SIEgetDeviceStatus(void) {
samux 1:80ab0d068708 151 // Read SIE device status register
samux 1:80ab0d068708 152 SIECommand(SIE_CMD_GET_DEVICE_STATUS);
samux 1:80ab0d068708 153 return SIEReadData(SIE_CMD_GET_DEVICE_STATUS);
samux 1:80ab0d068708 154 }
samux 1:80ab0d068708 155
samux 1:80ab0d068708 156 void SIEsetAddress(uint8_t address) {
samux 1:80ab0d068708 157 // Write SIE device address register
samux 1:80ab0d068708 158 SIECommand(SIE_CMD_SET_ADDRESS);
samux 1:80ab0d068708 159 SIEWriteData((address & 0x7f) | SIE_DSA_DEV_EN);
samux 1:80ab0d068708 160 }
samux 1:80ab0d068708 161
samux 1:80ab0d068708 162 static uint8_t SIEselectEndpoint(uint8_t endpoint) {
samux 1:80ab0d068708 163 // SIE select endpoint command
samux 1:80ab0d068708 164 SIECommand(SIE_CMD_SELECT_ENDPOINT(endpoint));
samux 1:80ab0d068708 165 return SIEReadData(SIE_CMD_SELECT_ENDPOINT(endpoint));
samux 1:80ab0d068708 166 }
samux 1:80ab0d068708 167
samux 1:80ab0d068708 168 static uint8_t SIEclearBuffer(void) {
samux 1:80ab0d068708 169 // SIE clear buffer command
samux 1:80ab0d068708 170 SIECommand(SIE_CMD_CLEAR_BUFFER);
samux 1:80ab0d068708 171 return SIEReadData(SIE_CMD_CLEAR_BUFFER);
samux 1:80ab0d068708 172 }
samux 1:80ab0d068708 173
samux 1:80ab0d068708 174 static void SIEvalidateBuffer(void) {
samux 1:80ab0d068708 175 // SIE validate buffer command
samux 1:80ab0d068708 176 SIECommand(SIE_CMD_VALIDATE_BUFFER);
samux 1:80ab0d068708 177 }
samux 1:80ab0d068708 178
samux 1:80ab0d068708 179 static void SIEsetEndpointStatus(uint8_t endpoint, uint8_t status) {
samux 1:80ab0d068708 180 // SIE set endpoint status command
samux 1:80ab0d068708 181 SIECommand(SIE_CMD_SET_ENDPOINT_STATUS(endpoint));
samux 1:80ab0d068708 182 SIEWriteData(status);
samux 1:80ab0d068708 183 }
samux 1:80ab0d068708 184
samux 1:80ab0d068708 185 static uint16_t SIEgetFrameNumber(void) __attribute__ ((unused));
samux 1:80ab0d068708 186 static uint16_t SIEgetFrameNumber(void) {
samux 1:80ab0d068708 187 // Read current frame number
samux 1:80ab0d068708 188 uint16_t lowByte;
samux 1:80ab0d068708 189 uint16_t highByte;
samux 1:80ab0d068708 190
samux 1:80ab0d068708 191 SIECommand(SIE_CMD_READ_FRAME_NUMBER);
samux 1:80ab0d068708 192 lowByte = SIEReadData(SIE_CMD_READ_FRAME_NUMBER);
samux 1:80ab0d068708 193 highByte = SIEReadData(SIE_CMD_READ_FRAME_NUMBER);
samux 1:80ab0d068708 194
samux 1:80ab0d068708 195 return (highByte << 8) | lowByte;
samux 1:80ab0d068708 196 }
samux 1:80ab0d068708 197
samux 1:80ab0d068708 198 static void SIEconfigureDevice(void) {
samux 1:80ab0d068708 199 // SIE Configure device command
samux 1:80ab0d068708 200 SIECommand(SIE_CMD_CONFIGURE_DEVICE);
samux 1:80ab0d068708 201 SIEWriteData(SIE_CONF_DEVICE);
samux 1:80ab0d068708 202 }
samux 1:80ab0d068708 203
samux 1:80ab0d068708 204 static void SIEunconfigureDevice(void) {
samux 1:80ab0d068708 205 // SIE Configure device command
samux 1:80ab0d068708 206 SIECommand(SIE_CMD_CONFIGURE_DEVICE);
samux 1:80ab0d068708 207 SIEWriteData(0);
samux 1:80ab0d068708 208 }
samux 1:80ab0d068708 209
samux 1:80ab0d068708 210 static void SIEconnect(void) {
samux 1:80ab0d068708 211 // Connect USB device
samux 8:335f2506f422 212 uint8_t status = SIEgetDeviceStatus();
samux 1:80ab0d068708 213 SIEsetDeviceStatus(status | SIE_DS_CON);
samux 1:80ab0d068708 214 }
samux 1:80ab0d068708 215
samux 1:80ab0d068708 216
samux 1:80ab0d068708 217 static void SIEdisconnect(void) {
samux 1:80ab0d068708 218 // Disconnect USB device
samux 8:335f2506f422 219 uint8_t status = SIEgetDeviceStatus();
samux 1:80ab0d068708 220 SIEsetDeviceStatus(status & ~SIE_DS_CON);
samux 1:80ab0d068708 221 }
samux 1:80ab0d068708 222
samux 1:80ab0d068708 223
samux 1:80ab0d068708 224 static uint8_t selectEndpointClearInterrupt(uint8_t endpoint) {
samux 1:80ab0d068708 225 // Implemented using using EP_INT_CLR.
samux 1:80ab0d068708 226 LPC_USB->USBEpIntClr = EP(endpoint);
samux 1:80ab0d068708 227 while (!(LPC_USB->USBDevIntSt & CDFULL));
samux 1:80ab0d068708 228 return (uint8_t)LPC_USB->USBCmdData;
samux 1:80ab0d068708 229 }
samux 1:80ab0d068708 230
samux 1:80ab0d068708 231
samux 1:80ab0d068708 232 static void enableEndpointEvent(uint8_t endpoint) {
samux 1:80ab0d068708 233 // Enable an endpoint interrupt
samux 1:80ab0d068708 234 LPC_USB->USBEpIntEn |= EP(endpoint);
samux 1:80ab0d068708 235 }
samux 1:80ab0d068708 236
samux 1:80ab0d068708 237 static void disableEndpointEvent(uint8_t endpoint) __attribute__ ((unused));
samux 1:80ab0d068708 238 static void disableEndpointEvent(uint8_t endpoint) {
samux 1:80ab0d068708 239 // Disable an endpoint interrupt
samux 1:80ab0d068708 240 LPC_USB->USBEpIntEn &= ~EP(endpoint);
samux 1:80ab0d068708 241 }
samux 1:80ab0d068708 242
samux 1:80ab0d068708 243 static volatile uint32_t __attribute__((used)) dummyRead;
samux 1:80ab0d068708 244 uint32_t USBHAL::endpointReadcore(uint8_t endpoint, uint8_t *buffer) {
samux 1:80ab0d068708 245 // Read from an OUT endpoint
samux 1:80ab0d068708 246 uint32_t size;
samux 1:80ab0d068708 247 uint32_t i;
samux 1:80ab0d068708 248 uint32_t data = 0;
samux 1:80ab0d068708 249 uint8_t offset;
samux 1:80ab0d068708 250
samux 1:80ab0d068708 251 LPC_USB->USBCtrl = LOG_ENDPOINT(endpoint) | RD_EN;
samux 1:80ab0d068708 252 while (!(LPC_USB->USBRxPLen & PKT_RDY));
samux 1:80ab0d068708 253
samux 1:80ab0d068708 254 size = LPC_USB->USBRxPLen & PKT_LNGTH_MASK;
samux 1:80ab0d068708 255
samux 1:80ab0d068708 256 offset = 0;
samux 1:80ab0d068708 257
samux 1:80ab0d068708 258 if (size > 0) {
samux 1:80ab0d068708 259 for (i=0; i<size; i++) {
samux 1:80ab0d068708 260 if (offset==0) {
samux 1:80ab0d068708 261 // Fetch up to four bytes of data as a word
samux 1:80ab0d068708 262 data = LPC_USB->USBRxData;
samux 1:80ab0d068708 263 }
samux 1:80ab0d068708 264
samux 1:80ab0d068708 265 // extract a byte
samux 1:80ab0d068708 266 *buffer = (data>>offset) & 0xff;
samux 1:80ab0d068708 267 buffer++;
samux 1:80ab0d068708 268
samux 1:80ab0d068708 269 // move on to the next byte
samux 1:80ab0d068708 270 offset = (offset + 8) % 32;
samux 1:80ab0d068708 271 }
samux 1:80ab0d068708 272 } else {
samux 1:80ab0d068708 273 dummyRead = LPC_USB->USBRxData;
samux 1:80ab0d068708 274 }
samux 1:80ab0d068708 275
samux 1:80ab0d068708 276 LPC_USB->USBCtrl = 0;
samux 1:80ab0d068708 277
samux 1:80ab0d068708 278 if ((endpoint >> 1) % 3 || (endpoint >> 1) == 0) {
samux 1:80ab0d068708 279 SIEselectEndpoint(endpoint);
samux 1:80ab0d068708 280 SIEclearBuffer();
samux 1:80ab0d068708 281 }
mbed_official 25:7c72828865f3 282
samux 1:80ab0d068708 283 return size;
samux 1:80ab0d068708 284 }
samux 1:80ab0d068708 285
samux 1:80ab0d068708 286 static void endpointWritecore(uint8_t endpoint, uint8_t *buffer, uint32_t size) {
samux 1:80ab0d068708 287 // Write to an IN endpoint
samux 1:80ab0d068708 288 uint32_t temp, data;
samux 1:80ab0d068708 289 uint8_t offset;
samux 1:80ab0d068708 290
samux 1:80ab0d068708 291 LPC_USB->USBCtrl = LOG_ENDPOINT(endpoint) | WR_EN;
samux 1:80ab0d068708 292
samux 1:80ab0d068708 293 LPC_USB->USBTxPLen = size;
samux 1:80ab0d068708 294 offset = 0;
samux 1:80ab0d068708 295 data = 0;
samux 1:80ab0d068708 296
samux 1:80ab0d068708 297 if (size>0) {
samux 1:80ab0d068708 298 do {
samux 1:80ab0d068708 299 // Fetch next data byte into a word-sized temporary variable
samux 1:80ab0d068708 300 temp = *buffer++;
samux 1:80ab0d068708 301
samux 1:80ab0d068708 302 // Add to current data word
samux 1:80ab0d068708 303 temp = temp << offset;
samux 1:80ab0d068708 304 data = data | temp;
samux 1:80ab0d068708 305
samux 1:80ab0d068708 306 // move on to the next byte
samux 1:80ab0d068708 307 offset = (offset + 8) % 32;
samux 1:80ab0d068708 308 size--;
samux 1:80ab0d068708 309
samux 1:80ab0d068708 310 if ((offset==0) || (size==0)) {
samux 1:80ab0d068708 311 // Write the word to the endpoint
samux 1:80ab0d068708 312 LPC_USB->USBTxData = data;
samux 1:80ab0d068708 313 data = 0;
samux 1:80ab0d068708 314 }
samux 1:80ab0d068708 315 } while (size>0);
samux 1:80ab0d068708 316 } else {
samux 1:80ab0d068708 317 LPC_USB->USBTxData = 0;
samux 1:80ab0d068708 318 }
samux 1:80ab0d068708 319
samux 1:80ab0d068708 320 // Clear WR_EN to cover zero length packet case
samux 1:80ab0d068708 321 LPC_USB->USBCtrl=0;
samux 1:80ab0d068708 322
samux 1:80ab0d068708 323 SIEselectEndpoint(endpoint);
samux 1:80ab0d068708 324 SIEvalidateBuffer();
samux 1:80ab0d068708 325 }
samux 1:80ab0d068708 326
samux 1:80ab0d068708 327 USBHAL::USBHAL(void) {
samux 1:80ab0d068708 328 // Disable IRQ
samux 1:80ab0d068708 329 NVIC_DisableIRQ(USB_IRQn);
mbed_official 25:7c72828865f3 330
samux 8:335f2506f422 331 // fill in callback array
samux 8:335f2506f422 332 epCallback[0] = &USBHAL::EP1_OUT_callback;
samux 8:335f2506f422 333 epCallback[1] = &USBHAL::EP1_IN_callback;
samux 8:335f2506f422 334 epCallback[2] = &USBHAL::EP2_OUT_callback;
samux 8:335f2506f422 335 epCallback[3] = &USBHAL::EP2_IN_callback;
samux 8:335f2506f422 336 epCallback[4] = &USBHAL::EP3_OUT_callback;
samux 8:335f2506f422 337 epCallback[5] = &USBHAL::EP3_IN_callback;
samux 8:335f2506f422 338 epCallback[6] = &USBHAL::EP4_OUT_callback;
samux 8:335f2506f422 339 epCallback[7] = &USBHAL::EP4_IN_callback;
samux 8:335f2506f422 340 epCallback[8] = &USBHAL::EP5_OUT_callback;
samux 8:335f2506f422 341 epCallback[9] = &USBHAL::EP5_IN_callback;
samux 8:335f2506f422 342 epCallback[10] = &USBHAL::EP6_OUT_callback;
samux 8:335f2506f422 343 epCallback[11] = &USBHAL::EP6_IN_callback;
samux 8:335f2506f422 344 epCallback[12] = &USBHAL::EP7_OUT_callback;
samux 8:335f2506f422 345 epCallback[13] = &USBHAL::EP7_IN_callback;
samux 8:335f2506f422 346 epCallback[14] = &USBHAL::EP8_OUT_callback;
samux 8:335f2506f422 347 epCallback[15] = &USBHAL::EP8_IN_callback;
samux 8:335f2506f422 348 epCallback[16] = &USBHAL::EP9_OUT_callback;
samux 8:335f2506f422 349 epCallback[17] = &USBHAL::EP9_IN_callback;
samux 8:335f2506f422 350 epCallback[18] = &USBHAL::EP10_OUT_callback;
samux 8:335f2506f422 351 epCallback[19] = &USBHAL::EP10_IN_callback;
samux 8:335f2506f422 352 epCallback[20] = &USBHAL::EP11_OUT_callback;
samux 8:335f2506f422 353 epCallback[21] = &USBHAL::EP11_IN_callback;
samux 8:335f2506f422 354 epCallback[22] = &USBHAL::EP12_OUT_callback;
samux 8:335f2506f422 355 epCallback[23] = &USBHAL::EP12_IN_callback;
samux 8:335f2506f422 356 epCallback[24] = &USBHAL::EP13_OUT_callback;
samux 8:335f2506f422 357 epCallback[25] = &USBHAL::EP13_IN_callback;
samux 8:335f2506f422 358 epCallback[26] = &USBHAL::EP14_OUT_callback;
samux 8:335f2506f422 359 epCallback[27] = &USBHAL::EP14_IN_callback;
samux 8:335f2506f422 360 epCallback[28] = &USBHAL::EP15_OUT_callback;
samux 8:335f2506f422 361 epCallback[29] = &USBHAL::EP15_IN_callback;
samux 1:80ab0d068708 362
samux 1:80ab0d068708 363 // Enable power to USB device controller
samux 1:80ab0d068708 364 LPC_SC->PCONP |= PCUSB;
samux 1:80ab0d068708 365
samux 1:80ab0d068708 366 // Enable USB clocks
samux 1:80ab0d068708 367 LPC_USB->USBClkCtrl |= DEV_CLK_EN | AHB_CLK_EN;
samux 1:80ab0d068708 368 while (LPC_USB->USBClkSt != (DEV_CLK_ON | AHB_CLK_ON));
samux 1:80ab0d068708 369
samux 1:80ab0d068708 370 // Configure pins P0.29 and P0.30 to be USB D+ and USB D-
samux 1:80ab0d068708 371 LPC_PINCON->PINSEL1 &= 0xc3ffffff;
samux 1:80ab0d068708 372 LPC_PINCON->PINSEL1 |= 0x14000000;
samux 1:80ab0d068708 373
samux 1:80ab0d068708 374 // Disconnect USB device
samux 1:80ab0d068708 375 SIEdisconnect();
samux 1:80ab0d068708 376
samux 1:80ab0d068708 377 // Configure pin P2.9 to be Connect
samux 1:80ab0d068708 378 LPC_PINCON->PINSEL4 &= 0xfffcffff;
samux 1:80ab0d068708 379 LPC_PINCON->PINSEL4 |= 0x00040000;
samux 1:80ab0d068708 380
samux 1:80ab0d068708 381 // Connect must be low for at least 2.5uS
samux 1:80ab0d068708 382 wait(0.3);
samux 1:80ab0d068708 383
samux 1:80ab0d068708 384 // Set the maximum packet size for the control endpoints
samux 1:80ab0d068708 385 realiseEndpoint(EP0IN, MAX_PACKET_SIZE_EP0, 0);
samux 1:80ab0d068708 386 realiseEndpoint(EP0OUT, MAX_PACKET_SIZE_EP0, 0);
samux 1:80ab0d068708 387
samux 1:80ab0d068708 388 // Attach IRQ
samux 1:80ab0d068708 389 instance = this;
samux 1:80ab0d068708 390 NVIC_SetVector(USB_IRQn, (uint32_t)&_usbisr);
samux 1:80ab0d068708 391
samux 1:80ab0d068708 392 // Enable interrupts for device events and EP0
samux 1:80ab0d068708 393 LPC_USB->USBDevIntEn = EP_SLOW | DEV_STAT | FRAME;
samux 1:80ab0d068708 394 enableEndpointEvent(EP0IN);
samux 1:80ab0d068708 395 enableEndpointEvent(EP0OUT);
samux 1:80ab0d068708 396 }
samux 1:80ab0d068708 397
samux 1:80ab0d068708 398 USBHAL::~USBHAL(void) {
samux 1:80ab0d068708 399 // Ensure device disconnected
samux 1:80ab0d068708 400 SIEdisconnect();
samux 1:80ab0d068708 401 // Disable USB interrupts
samux 1:80ab0d068708 402 NVIC_DisableIRQ(USB_IRQn);
samux 1:80ab0d068708 403 }
samux 1:80ab0d068708 404
samux 1:80ab0d068708 405 void USBHAL::connect(void) {
samux 3:6d85e04fb59f 406 NVIC_EnableIRQ(USB_IRQn);
samux 1:80ab0d068708 407 // Connect USB device
samux 1:80ab0d068708 408 SIEconnect();
samux 1:80ab0d068708 409 }
samux 1:80ab0d068708 410
samux 1:80ab0d068708 411 void USBHAL::disconnect(void) {
samux 3:6d85e04fb59f 412 NVIC_DisableIRQ(USB_IRQn);
samux 1:80ab0d068708 413 // Disconnect USB device
samux 1:80ab0d068708 414 SIEdisconnect();
samux 1:80ab0d068708 415 }
samux 1:80ab0d068708 416
samux 1:80ab0d068708 417 void USBHAL::configureDevice(void) {
samux 1:80ab0d068708 418 SIEconfigureDevice();
samux 1:80ab0d068708 419 }
samux 1:80ab0d068708 420
samux 1:80ab0d068708 421 void USBHAL::unconfigureDevice(void) {
samux 1:80ab0d068708 422 SIEunconfigureDevice();
samux 1:80ab0d068708 423 }
samux 1:80ab0d068708 424
samux 1:80ab0d068708 425 void USBHAL::setAddress(uint8_t address) {
samux 1:80ab0d068708 426 SIEsetAddress(address);
samux 1:80ab0d068708 427 }
samux 1:80ab0d068708 428
samux 1:80ab0d068708 429 void USBHAL::EP0setup(uint8_t *buffer) {
samux 1:80ab0d068708 430 endpointReadcore(EP0OUT, buffer);
samux 1:80ab0d068708 431 }
samux 1:80ab0d068708 432
samux 1:80ab0d068708 433 void USBHAL::EP0read(void) {
samux 1:80ab0d068708 434 // Not required
samux 1:80ab0d068708 435 }
samux 1:80ab0d068708 436
samux 8:335f2506f422 437 void USBHAL::EP0readStage(void) {
samux 8:335f2506f422 438 // Not required
samux 8:335f2506f422 439 }
samux 8:335f2506f422 440
samux 1:80ab0d068708 441 uint32_t USBHAL::EP0getReadResult(uint8_t *buffer) {
samux 1:80ab0d068708 442 return endpointReadcore(EP0OUT, buffer);
samux 1:80ab0d068708 443 }
samux 1:80ab0d068708 444
samux 1:80ab0d068708 445 void USBHAL::EP0write(uint8_t *buffer, uint32_t size) {
samux 1:80ab0d068708 446 endpointWritecore(EP0IN, buffer, size);
samux 1:80ab0d068708 447 }
samux 1:80ab0d068708 448
samux 1:80ab0d068708 449 void USBHAL::EP0getWriteResult(void) {
samux 1:80ab0d068708 450 // Not required
samux 1:80ab0d068708 451 }
samux 1:80ab0d068708 452
samux 1:80ab0d068708 453 void USBHAL::EP0stall(void) {
samux 1:80ab0d068708 454 // This will stall both control endpoints
samux 1:80ab0d068708 455 stallEndpoint(EP0OUT);
samux 1:80ab0d068708 456 }
samux 1:80ab0d068708 457
samux 1:80ab0d068708 458 EP_STATUS USBHAL::endpointRead(uint8_t endpoint, uint32_t maximumSize) {
samux 1:80ab0d068708 459 return EP_PENDING;
samux 1:80ab0d068708 460 }
samux 1:80ab0d068708 461
samux 1:80ab0d068708 462 EP_STATUS USBHAL::endpointReadResult(uint8_t endpoint, uint8_t * buffer, uint32_t *bytesRead) {
samux 1:80ab0d068708 463
samux 1:80ab0d068708 464 //for isochronous endpoint, we don't wait an interrupt
samux 1:80ab0d068708 465 if ((endpoint >> 1) % 3 || (endpoint >> 1) == 0) {
samux 1:80ab0d068708 466 if (!(epComplete & EP(endpoint)))
samux 1:80ab0d068708 467 return EP_PENDING;
samux 1:80ab0d068708 468 }
mbed_official 25:7c72828865f3 469
samux 1:80ab0d068708 470 *bytesRead = endpointReadcore(endpoint, buffer);
samux 1:80ab0d068708 471 epComplete &= ~EP(endpoint);
samux 1:80ab0d068708 472 return EP_COMPLETED;
samux 1:80ab0d068708 473 }
samux 1:80ab0d068708 474
Troels Nilsson 76:eef92651f52f 475 EP_STATUS USBHAL::endpointWrite(uint8_t endpoint, const uint8_t *data, uint32_t size) {
samux 1:80ab0d068708 476 if (getEndpointStallState(endpoint)) {
samux 1:80ab0d068708 477 return EP_STALLED;
samux 1:80ab0d068708 478 }
samux 1:80ab0d068708 479
samux 1:80ab0d068708 480 epComplete &= ~EP(endpoint);
samux 1:80ab0d068708 481
samux 1:80ab0d068708 482 endpointWritecore(endpoint, data, size);
samux 1:80ab0d068708 483 return EP_PENDING;
samux 1:80ab0d068708 484 }
samux 1:80ab0d068708 485
samux 1:80ab0d068708 486 EP_STATUS USBHAL::endpointWriteResult(uint8_t endpoint) {
samux 1:80ab0d068708 487 if (epComplete & EP(endpoint)) {
samux 1:80ab0d068708 488 epComplete &= ~EP(endpoint);
samux 1:80ab0d068708 489 return EP_COMPLETED;
samux 1:80ab0d068708 490 }
samux 1:80ab0d068708 491
samux 1:80ab0d068708 492 return EP_PENDING;
samux 1:80ab0d068708 493 }
samux 1:80ab0d068708 494
samux 1:80ab0d068708 495 bool USBHAL::realiseEndpoint(uint8_t endpoint, uint32_t maxPacket, uint32_t flags) {
samux 1:80ab0d068708 496 // Realise an endpoint
samux 1:80ab0d068708 497 LPC_USB->USBDevIntClr = EP_RLZED;
samux 1:80ab0d068708 498 LPC_USB->USBReEp |= EP(endpoint);
samux 1:80ab0d068708 499 LPC_USB->USBEpInd = endpoint;
samux 1:80ab0d068708 500 LPC_USB->USBMaxPSize = maxPacket;
samux 1:80ab0d068708 501
samux 1:80ab0d068708 502 while (!(LPC_USB->USBDevIntSt & EP_RLZED));
samux 1:80ab0d068708 503 LPC_USB->USBDevIntClr = EP_RLZED;
samux 1:80ab0d068708 504
samux 1:80ab0d068708 505 // Clear stall state
samux 1:80ab0d068708 506 endpointStallState &= ~EP(endpoint);
samux 1:80ab0d068708 507
samux 1:80ab0d068708 508 enableEndpointEvent(endpoint);
samux 1:80ab0d068708 509 return true;
samux 1:80ab0d068708 510 }
samux 1:80ab0d068708 511
samux 1:80ab0d068708 512 void USBHAL::stallEndpoint(uint8_t endpoint) {
samux 1:80ab0d068708 513 // Stall an endpoint
samux 1:80ab0d068708 514 if ( (endpoint==EP0IN) || (endpoint==EP0OUT) ) {
samux 1:80ab0d068708 515 // Conditionally stall both control endpoints
samux 1:80ab0d068708 516 SIEsetEndpointStatus(EP0OUT, SIE_SES_CND_ST);
samux 1:80ab0d068708 517 } else {
samux 1:80ab0d068708 518 SIEsetEndpointStatus(endpoint, SIE_SES_ST);
samux 1:80ab0d068708 519
samux 1:80ab0d068708 520 // Update stall state
samux 1:80ab0d068708 521 endpointStallState |= EP(endpoint);
samux 1:80ab0d068708 522 }
samux 1:80ab0d068708 523 }
samux 1:80ab0d068708 524
samux 1:80ab0d068708 525 void USBHAL::unstallEndpoint(uint8_t endpoint) {
samux 1:80ab0d068708 526 // Unstall an endpoint. The endpoint will also be reinitialised
samux 1:80ab0d068708 527 SIEsetEndpointStatus(endpoint, 0);
samux 1:80ab0d068708 528
samux 1:80ab0d068708 529 // Update stall state
samux 1:80ab0d068708 530 endpointStallState &= ~EP(endpoint);
samux 1:80ab0d068708 531 }
samux 1:80ab0d068708 532
samux 1:80ab0d068708 533 bool USBHAL::getEndpointStallState(uint8_t endpoint) {
samux 1:80ab0d068708 534 // Returns true if endpoint stalled
samux 1:80ab0d068708 535 return endpointStallState & EP(endpoint);
samux 1:80ab0d068708 536 }
samux 1:80ab0d068708 537
samux 1:80ab0d068708 538 void USBHAL::remoteWakeup(void) {
samux 1:80ab0d068708 539 // Remote wakeup
samux 1:80ab0d068708 540 uint8_t status;
samux 1:80ab0d068708 541
samux 1:80ab0d068708 542 // Enable USB clocks
samux 1:80ab0d068708 543 LPC_USB->USBClkCtrl |= DEV_CLK_EN | AHB_CLK_EN;
samux 1:80ab0d068708 544 while (LPC_USB->USBClkSt != (DEV_CLK_ON | AHB_CLK_ON));
samux 1:80ab0d068708 545
samux 1:80ab0d068708 546 status = SIEgetDeviceStatus();
samux 1:80ab0d068708 547 SIEsetDeviceStatus(status & ~SIE_DS_SUS);
samux 1:80ab0d068708 548 }
samux 1:80ab0d068708 549
samux 1:80ab0d068708 550 void USBHAL::_usbisr(void) {
samux 1:80ab0d068708 551 instance->usbisr();
samux 1:80ab0d068708 552 }
samux 1:80ab0d068708 553
samux 1:80ab0d068708 554
samux 1:80ab0d068708 555 void USBHAL::usbisr(void) {
samux 1:80ab0d068708 556 uint8_t devStat;
samux 1:80ab0d068708 557
samux 1:80ab0d068708 558 if (LPC_USB->USBDevIntSt & FRAME) {
samux 1:80ab0d068708 559 // Start of frame event
samux 1:80ab0d068708 560 SOF(SIEgetFrameNumber());
samux 1:80ab0d068708 561 // Clear interrupt status flag
samux 1:80ab0d068708 562 LPC_USB->USBDevIntClr = FRAME;
samux 1:80ab0d068708 563 }
samux 1:80ab0d068708 564
samux 1:80ab0d068708 565 if (LPC_USB->USBDevIntSt & DEV_STAT) {
samux 1:80ab0d068708 566 // Device Status interrupt
samux 1:80ab0d068708 567 // Must clear the interrupt status flag before reading the device status from the SIE
samux 1:80ab0d068708 568 LPC_USB->USBDevIntClr = DEV_STAT;
samux 1:80ab0d068708 569
samux 1:80ab0d068708 570 // Read device status from SIE
samux 1:80ab0d068708 571 devStat = SIEgetDeviceStatus();
samux 1:80ab0d068708 572 //printf("devStat: %d\r\n", devStat);
samux 1:80ab0d068708 573
samux 1:80ab0d068708 574 if (devStat & SIE_DS_SUS_CH) {
samux 1:80ab0d068708 575 // Suspend status changed
samux 1:80ab0d068708 576 if((devStat & SIE_DS_SUS) != 0) {
samux 1:80ab0d068708 577 suspendStateChanged(0);
samux 1:80ab0d068708 578 }
samux 1:80ab0d068708 579 }
samux 1:80ab0d068708 580
samux 1:80ab0d068708 581 if (devStat & SIE_DS_RST) {
samux 1:80ab0d068708 582 // Bus reset
samux 1:80ab0d068708 583 if((devStat & SIE_DS_SUS) == 0) {
samux 1:80ab0d068708 584 suspendStateChanged(1);
samux 1:80ab0d068708 585 }
samux 1:80ab0d068708 586 busReset();
samux 1:80ab0d068708 587 }
samux 1:80ab0d068708 588 }
samux 1:80ab0d068708 589
samux 1:80ab0d068708 590 if (LPC_USB->USBDevIntSt & EP_SLOW) {
samux 1:80ab0d068708 591 // (Slow) Endpoint Interrupt
samux 1:80ab0d068708 592
samux 1:80ab0d068708 593 // Process each endpoint interrupt
samux 1:80ab0d068708 594 if (LPC_USB->USBEpIntSt & EP(EP0OUT)) {
samux 1:80ab0d068708 595 if (selectEndpointClearInterrupt(EP0OUT) & SIE_SE_STP) {
samux 1:80ab0d068708 596 // this is a setup packet
samux 1:80ab0d068708 597 EP0setupCallback();
samux 1:80ab0d068708 598 } else {
samux 1:80ab0d068708 599 EP0out();
samux 1:80ab0d068708 600 }
samux 1:80ab0d068708 601 LPC_USB->USBDevIntClr = EP_SLOW;
samux 1:80ab0d068708 602 }
samux 1:80ab0d068708 603
samux 1:80ab0d068708 604 if (LPC_USB->USBEpIntSt & EP(EP0IN)) {
samux 1:80ab0d068708 605 selectEndpointClearInterrupt(EP0IN);
samux 1:80ab0d068708 606 LPC_USB->USBDevIntClr = EP_SLOW;
samux 1:80ab0d068708 607 EP0in();
samux 1:80ab0d068708 608 }
mbed_official 25:7c72828865f3 609
samux 8:335f2506f422 610 for (uint8_t num = 2; num < 16*2; num++) {
samux 8:335f2506f422 611 if (LPC_USB->USBEpIntSt & EP(num)) {
samux 8:335f2506f422 612 selectEndpointClearInterrupt(num);
samux 8:335f2506f422 613 epComplete |= EP(num);
samux 8:335f2506f422 614 LPC_USB->USBDevIntClr = EP_SLOW;
samux 8:335f2506f422 615 if ((instance->*(epCallback[num - 2]))()) {
samux 8:335f2506f422 616 epComplete &= ~EP(num);
samux 8:335f2506f422 617 }
samux 8:335f2506f422 618 }
samux 1:80ab0d068708 619 }
samux 1:80ab0d068708 620 }
samux 1:80ab0d068708 621 }
samux 1:80ab0d068708 622
samux 1:80ab0d068708 623 #endif