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_LPC11U.cpp@3:6d85e04fb59f, 2012-10-14 (annotated)

Committer:
samux
Date:
Sun Oct 14 12:38:56 2012 +0000
Revision:
3:6d85e04fb59f
Parent:
1:80ab0d068708
Child:
8:335f2506f422
move EnableIRQ to connect() - add MEDIA_REMOVAL handling

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 #ifdef TARGET_LPC11U24
samux 1:80ab0d068708 20
samux 1:80ab0d068708 21 #include "USBHAL.h"
samux 1:80ab0d068708 22
samux 1:80ab0d068708 23 USBHAL * USBHAL::instance;
samux 1:80ab0d068708 24
samux 1:80ab0d068708 25
samux 1:80ab0d068708 26 // Valid physical endpoint numbers are 0 to (NUMBER_OF_PHYSICAL_ENDPOINTS-1)
samux 1:80ab0d068708 27 #define LAST_PHYSICAL_ENDPOINT (NUMBER_OF_PHYSICAL_ENDPOINTS-1)
samux 1:80ab0d068708 28
samux 1:80ab0d068708 29 // Convert physical endpoint number to register bit
samux 1:80ab0d068708 30 #define EP(endpoint) (1UL<<endpoint)
samux 1:80ab0d068708 31
samux 1:80ab0d068708 32 // Convert physical to logical
samux 1:80ab0d068708 33 #define PHY_TO_LOG(endpoint) ((endpoint)>>1)
samux 1:80ab0d068708 34
samux 1:80ab0d068708 35 // Get endpoint direction
samux 1:80ab0d068708 36 #define IN_EP(endpoint) ((endpoint) & 1U ? true : false)
samux 1:80ab0d068708 37 #define OUT_EP(endpoint) ((endpoint) & 1U ? false : true)
samux 1:80ab0d068708 38
samux 1:80ab0d068708 39 // USB RAM
samux 1:80ab0d068708 40 #define USB_RAM_START (0x20004000)
samux 1:80ab0d068708 41 #define USB_RAM_SIZE (0x00000800)
samux 1:80ab0d068708 42
samux 1:80ab0d068708 43 // SYSAHBCLKCTRL
samux 1:80ab0d068708 44 #define CLK_USB (1UL<<14)
samux 1:80ab0d068708 45 #define CLK_USBRAM (1UL<<27)
samux 1:80ab0d068708 46
samux 1:80ab0d068708 47 // USB Information register
samux 1:80ab0d068708 48 #define FRAME_NR(a) ((a) & 0x7ff) // Frame number
samux 1:80ab0d068708 49
samux 1:80ab0d068708 50 // USB Device Command/Status register
samux 1:80ab0d068708 51 #define DEV_ADDR_MASK (0x7f) // Device address
samux 1:80ab0d068708 52 #define DEV_ADDR(a) ((a) & DEV_ADDR_MASK)
samux 1:80ab0d068708 53 #define DEV_EN (1UL<<7) // Device enable
samux 1:80ab0d068708 54 #define SETUP (1UL<<8) // SETUP token received
samux 1:80ab0d068708 55 #define PLL_ON (1UL<<9) // PLL enabled in suspend
samux 1:80ab0d068708 56 #define DCON (1UL<<16) // Device status - connect
samux 1:80ab0d068708 57 #define DSUS (1UL<<17) // Device status - suspend
samux 1:80ab0d068708 58 #define DCON_C (1UL<<24) // Connect change
samux 1:80ab0d068708 59 #define DSUS_C (1UL<<25) // Suspend change
samux 1:80ab0d068708 60 #define DRES_C (1UL<<26) // Reset change
samux 1:80ab0d068708 61 #define VBUSDEBOUNCED (1UL<<28) // Vbus detected
samux 1:80ab0d068708 62
samux 1:80ab0d068708 63 // Endpoint Command/Status list
samux 1:80ab0d068708 64 #define CMDSTS_A (1UL<<31) // Active
samux 1:80ab0d068708 65 #define CMDSTS_D (1UL<<30) // Disable
samux 1:80ab0d068708 66 #define CMDSTS_S (1UL<<29) // Stall
samux 1:80ab0d068708 67 #define CMDSTS_TR (1UL<<28) // Toggle Reset
samux 1:80ab0d068708 68 #define CMDSTS_RF (1UL<<27) // Rate Feedback mode
samux 1:80ab0d068708 69 #define CMDSTS_TV (1UL<<27) // Toggle Value
samux 1:80ab0d068708 70 #define CMDSTS_T (1UL<<26) // Endpoint Type
samux 1:80ab0d068708 71 #define CMDSTS_NBYTES(n) (((n)&0x3ff)<<16) // Number of bytes
samux 1:80ab0d068708 72 #define CMDSTS_ADDRESS_OFFSET(a) (((a)>>6)&0xffff) // Buffer start address
samux 1:80ab0d068708 73
samux 1:80ab0d068708 74 #define BYTES_REMAINING(s) (((s)>>16)&0x3ff) // Bytes remaining after transfer
samux 1:80ab0d068708 75
samux 1:80ab0d068708 76 // USB Non-endpoint interrupt sources
samux 1:80ab0d068708 77 #define FRAME_INT (1UL<<30)
samux 1:80ab0d068708 78 #define DEV_INT (1UL<<31)
samux 1:80ab0d068708 79
samux 1:80ab0d068708 80 static volatile int epComplete = 0;
samux 1:80ab0d068708 81
samux 1:80ab0d068708 82 // One entry for a double-buffered logical endpoint in the endpoint
samux 1:80ab0d068708 83 // command/status list. Endpoint 0 is single buffered, out[1] is used
samux 1:80ab0d068708 84 // for the SETUP packet and in[1] is not used
samux 1:80ab0d068708 85 typedef __packed struct {
samux 1:80ab0d068708 86 uint32_t out[2];
samux 1:80ab0d068708 87 uint32_t in[2];
samux 1:80ab0d068708 88 } EP_COMMAND_STATUS;
samux 1:80ab0d068708 89
samux 1:80ab0d068708 90 typedef __packed struct {
samux 1:80ab0d068708 91 uint8_t out[MAX_PACKET_SIZE_EP0];
samux 1:80ab0d068708 92 uint8_t in[MAX_PACKET_SIZE_EP0];
samux 1:80ab0d068708 93 uint8_t setup[SETUP_PACKET_SIZE];
samux 1:80ab0d068708 94 } CONTROL_TRANSFER;
samux 1:80ab0d068708 95
samux 1:80ab0d068708 96 typedef __packed struct {
samux 1:80ab0d068708 97 uint32_t maxPacket;
samux 1:80ab0d068708 98 uint32_t buffer[2];
samux 1:80ab0d068708 99 uint32_t options;
samux 1:80ab0d068708 100 } EP_STATE;
samux 1:80ab0d068708 101
samux 1:80ab0d068708 102 static volatile EP_STATE endpointState[NUMBER_OF_PHYSICAL_ENDPOINTS];
samux 1:80ab0d068708 103
samux 1:80ab0d068708 104 // Pointer to the endpoint command/status list
samux 1:80ab0d068708 105 static EP_COMMAND_STATUS *ep = NULL;
samux 1:80ab0d068708 106
samux 1:80ab0d068708 107 // Pointer to endpoint 0 data (IN/OUT and SETUP)
samux 1:80ab0d068708 108 static CONTROL_TRANSFER *ct = NULL;
samux 1:80ab0d068708 109
samux 1:80ab0d068708 110 // Shadow DEVCMDSTAT register to avoid accidentally clearing flags or
samux 1:80ab0d068708 111 // initiating a remote wakeup event.
samux 1:80ab0d068708 112 static volatile uint32_t devCmdStat;
samux 1:80ab0d068708 113
samux 1:80ab0d068708 114 // Pointers used to allocate USB RAM
samux 1:80ab0d068708 115 static uint32_t usbRamPtr = USB_RAM_START;
samux 1:80ab0d068708 116 static uint32_t epRamPtr = 0; // Buffers for endpoints > 0 start here
samux 1:80ab0d068708 117
samux 1:80ab0d068708 118 #define ROUND_UP_TO_MULTIPLE(x, m) ((((x)+((m)-1))/(m))*(m))
samux 1:80ab0d068708 119
samux 1:80ab0d068708 120 void USBMemCopy(uint8_t *dst, uint8_t *src, uint32_t size);
samux 1:80ab0d068708 121 void USBMemCopy(uint8_t *dst, uint8_t *src, uint32_t size) {
samux 1:80ab0d068708 122 if (size > 0) {
samux 1:80ab0d068708 123 do {
samux 1:80ab0d068708 124 *dst++ = *src++;
samux 1:80ab0d068708 125 } while (--size > 0);
samux 1:80ab0d068708 126 }
samux 1:80ab0d068708 127 }
samux 1:80ab0d068708 128
samux 1:80ab0d068708 129
samux 1:80ab0d068708 130 USBHAL::USBHAL(void) {
samux 1:80ab0d068708 131 NVIC_DisableIRQ(USB_IRQn);
samux 1:80ab0d068708 132
samux 1:80ab0d068708 133 // nUSB_CONNECT output
samux 1:80ab0d068708 134 LPC_IOCON->PIO0_6 = 0x00000001;
samux 1:80ab0d068708 135
samux 1:80ab0d068708 136 // Enable clocks (USB registers, USB RAM)
samux 1:80ab0d068708 137 LPC_SYSCON->SYSAHBCLKCTRL |= CLK_USB | CLK_USBRAM;
samux 1:80ab0d068708 138
samux 1:80ab0d068708 139 // Ensure device disconnected (DCON not set)
samux 1:80ab0d068708 140 LPC_USB->DEVCMDSTAT = 0;
samux 1:80ab0d068708 141
samux 1:80ab0d068708 142 // to ensure that the USB host sees the device as
samux 1:80ab0d068708 143 // disconnected if the target CPU is reset.
samux 1:80ab0d068708 144 wait(0.3);
samux 1:80ab0d068708 145
samux 1:80ab0d068708 146 // Reserve space in USB RAM for endpoint command/status list
samux 1:80ab0d068708 147 // Must be 256 byte aligned
samux 1:80ab0d068708 148 usbRamPtr = ROUND_UP_TO_MULTIPLE(usbRamPtr, 256);
samux 1:80ab0d068708 149 ep = (EP_COMMAND_STATUS *)usbRamPtr;
samux 1:80ab0d068708 150 usbRamPtr += (sizeof(EP_COMMAND_STATUS) * NUMBER_OF_LOGICAL_ENDPOINTS);
samux 1:80ab0d068708 151 LPC_USB->EPLISTSTART = (uint32_t)(ep) & 0xffffff00;
samux 1:80ab0d068708 152
samux 1:80ab0d068708 153 // Reserve space in USB RAM for Endpoint 0
samux 1:80ab0d068708 154 // Must be 64 byte aligned
samux 1:80ab0d068708 155 usbRamPtr = ROUND_UP_TO_MULTIPLE(usbRamPtr, 64);
samux 1:80ab0d068708 156 ct = (CONTROL_TRANSFER *)usbRamPtr;
samux 1:80ab0d068708 157 usbRamPtr += sizeof(CONTROL_TRANSFER);
samux 1:80ab0d068708 158 LPC_USB->DATABUFSTART =(uint32_t)(ct) & 0xffc00000;
samux 1:80ab0d068708 159
samux 1:80ab0d068708 160 // Setup command/status list for EP0
samux 1:80ab0d068708 161 ep[0].out[0] = 0;
samux 1:80ab0d068708 162 ep[0].in[0] = 0;
samux 1:80ab0d068708 163 ep[0].out[1] = CMDSTS_ADDRESS_OFFSET((uint32_t)ct->setup);
samux 1:80ab0d068708 164
samux 1:80ab0d068708 165 // Route all interrupts to IRQ, some can be routed to
samux 1:80ab0d068708 166 // USB_FIQ if you wish.
samux 1:80ab0d068708 167 LPC_USB->INTROUTING = 0;
samux 1:80ab0d068708 168
samux 1:80ab0d068708 169 // Set device address 0, enable USB device, no remote wakeup
samux 1:80ab0d068708 170 devCmdStat = DEV_ADDR(0) | DEV_EN | DSUS;
samux 1:80ab0d068708 171 LPC_USB->DEVCMDSTAT = devCmdStat;
samux 1:80ab0d068708 172
samux 1:80ab0d068708 173 // Enable interrupts for device events and EP0
samux 1:80ab0d068708 174 LPC_USB->INTEN = DEV_INT | EP(EP0IN) | EP(EP0OUT) | FRAME_INT;
samux 1:80ab0d068708 175 instance = this;
samux 1:80ab0d068708 176
samux 1:80ab0d068708 177 //attach IRQ handler and enable interrupts
samux 1:80ab0d068708 178 NVIC_SetVector(USB_IRQn, (uint32_t)&_usbisr);
samux 1:80ab0d068708 179 }
samux 1:80ab0d068708 180
samux 1:80ab0d068708 181 USBHAL::~USBHAL(void) {
samux 1:80ab0d068708 182 // Ensure device disconnected (DCON not set)
samux 1:80ab0d068708 183 LPC_USB->DEVCMDSTAT = 0;
samux 1:80ab0d068708 184
samux 1:80ab0d068708 185 // Disable USB interrupts
samux 1:80ab0d068708 186 NVIC_DisableIRQ(USB_IRQn);
samux 1:80ab0d068708 187 }
samux 1:80ab0d068708 188
samux 1:80ab0d068708 189 void USBHAL::connect(void) {
samux 3:6d85e04fb59f 190 NVIC_EnableIRQ(USB_IRQn);
samux 1:80ab0d068708 191 devCmdStat |= DCON;
samux 1:80ab0d068708 192 LPC_USB->DEVCMDSTAT = devCmdStat;
samux 1:80ab0d068708 193 }
samux 1:80ab0d068708 194
samux 1:80ab0d068708 195 void USBHAL::disconnect(void) {
samux 3:6d85e04fb59f 196 NVIC_DisableIRQ(USB_IRQn);
samux 1:80ab0d068708 197 devCmdStat &= ~DCON;
samux 1:80ab0d068708 198 LPC_USB->DEVCMDSTAT = devCmdStat;
samux 1:80ab0d068708 199 }
samux 1:80ab0d068708 200
samux 1:80ab0d068708 201 void USBHAL::configureDevice(void) {
samux 1:80ab0d068708 202 }
samux 1:80ab0d068708 203
samux 1:80ab0d068708 204 void USBHAL::unconfigureDevice(void) {
samux 1:80ab0d068708 205 }
samux 1:80ab0d068708 206
samux 1:80ab0d068708 207 void USBHAL::EP0setup(uint8_t *buffer) {
samux 1:80ab0d068708 208 // Copy setup packet data
samux 1:80ab0d068708 209 USBMemCopy(buffer, ct->setup, SETUP_PACKET_SIZE);
samux 1:80ab0d068708 210 }
samux 1:80ab0d068708 211
samux 1:80ab0d068708 212 void USBHAL::EP0read(void) {
samux 1:80ab0d068708 213 // Start an endpoint 0 read
samux 1:80ab0d068708 214
samux 1:80ab0d068708 215 // The USB ISR will call USBDevice_EP0out() when a packet has been read,
samux 1:80ab0d068708 216 // the USBDevice layer then calls USBBusInterface_EP0getReadResult() to
samux 1:80ab0d068708 217 // read the data.
samux 1:80ab0d068708 218
samux 1:80ab0d068708 219 ep[0].out[0] = CMDSTS_A |CMDSTS_NBYTES(MAX_PACKET_SIZE_EP0) \
samux 1:80ab0d068708 220 | CMDSTS_ADDRESS_OFFSET((uint32_t)ct->out);
samux 1:80ab0d068708 221 }
samux 1:80ab0d068708 222
samux 1:80ab0d068708 223 uint32_t USBHAL::EP0getReadResult(uint8_t *buffer) {
samux 1:80ab0d068708 224 // Complete an endpoint 0 read
samux 1:80ab0d068708 225 uint32_t bytesRead;
samux 1:80ab0d068708 226
samux 1:80ab0d068708 227 // Find how many bytes were read
samux 1:80ab0d068708 228 bytesRead = MAX_PACKET_SIZE_EP0 - BYTES_REMAINING(ep[0].out[0]);
samux 1:80ab0d068708 229
samux 1:80ab0d068708 230 // Copy data
samux 1:80ab0d068708 231 USBMemCopy(buffer, ct->out, bytesRead);
samux 1:80ab0d068708 232 return bytesRead;
samux 1:80ab0d068708 233 }
samux 1:80ab0d068708 234
samux 1:80ab0d068708 235 void USBHAL::EP0write(uint8_t *buffer, uint32_t size) {
samux 1:80ab0d068708 236 // Start and endpoint 0 write
samux 1:80ab0d068708 237
samux 1:80ab0d068708 238 // The USB ISR will call USBDevice_EP0in() when the data has
samux 1:80ab0d068708 239 // been written, the USBDevice layer then calls
samux 1:80ab0d068708 240 // USBBusInterface_EP0getWriteResult() to complete the transaction.
samux 1:80ab0d068708 241
samux 1:80ab0d068708 242 // Copy data
samux 1:80ab0d068708 243 USBMemCopy(ct->in, buffer, size);
samux 1:80ab0d068708 244
samux 1:80ab0d068708 245 // Start transfer
samux 1:80ab0d068708 246 ep[0].in[0] = CMDSTS_A | CMDSTS_NBYTES(size) \
samux 1:80ab0d068708 247 | CMDSTS_ADDRESS_OFFSET((uint32_t)ct->in);
samux 1:80ab0d068708 248 }
samux 1:80ab0d068708 249
samux 1:80ab0d068708 250
samux 1:80ab0d068708 251 EP_STATUS USBHAL::endpointRead(uint8_t endpoint, uint32_t maximumSize) {
samux 1:80ab0d068708 252 uint8_t bf = 0;
samux 1:80ab0d068708 253 uint32_t flags = 0;
samux 1:80ab0d068708 254
samux 1:80ab0d068708 255 //check which buffer must be filled
samux 1:80ab0d068708 256 if (LPC_USB->EPBUFCFG & EP(endpoint)) {
samux 1:80ab0d068708 257 // Double buffered
samux 1:80ab0d068708 258 if (LPC_USB->EPINUSE & EP(endpoint)) {
samux 1:80ab0d068708 259 bf = 1;
samux 1:80ab0d068708 260 } else {
samux 1:80ab0d068708 261 bf = 0;
samux 1:80ab0d068708 262 }
samux 1:80ab0d068708 263 }
samux 1:80ab0d068708 264
samux 1:80ab0d068708 265 // if isochronous endpoint, T = 1
samux 1:80ab0d068708 266 if(endpointState[endpoint].options & ISOCHRONOUS)
samux 1:80ab0d068708 267 {
samux 1:80ab0d068708 268 flags |= CMDSTS_T;
samux 1:80ab0d068708 269 }
samux 1:80ab0d068708 270
samux 1:80ab0d068708 271 //Active the endpoint for reading
samux 1:80ab0d068708 272 ep[PHY_TO_LOG(endpoint)].out[bf] = CMDSTS_A | CMDSTS_NBYTES(maximumSize) \
samux 1:80ab0d068708 273 | CMDSTS_ADDRESS_OFFSET((uint32_t)ct->out) | flags;
samux 1:80ab0d068708 274 return EP_PENDING;
samux 1:80ab0d068708 275 }
samux 1:80ab0d068708 276
samux 1:80ab0d068708 277 EP_STATUS USBHAL::endpointReadResult(uint8_t endpoint, uint8_t *data, uint32_t *bytesRead) {
samux 1:80ab0d068708 278
samux 1:80ab0d068708 279 uint8_t bf = 0;
samux 1:80ab0d068708 280
samux 1:80ab0d068708 281 if (!(epComplete & EP(endpoint)))
samux 1:80ab0d068708 282 return EP_PENDING;
samux 1:80ab0d068708 283 else {
samux 1:80ab0d068708 284 epComplete &= ~EP(endpoint);
samux 1:80ab0d068708 285
samux 1:80ab0d068708 286 //check which buffer has been filled
samux 1:80ab0d068708 287 if (LPC_USB->EPBUFCFG & EP(endpoint)) {
samux 1:80ab0d068708 288 // Double buffered (here we read the previous buffer which was used)
samux 1:80ab0d068708 289 if (LPC_USB->EPINUSE & EP(endpoint)) {
samux 1:80ab0d068708 290 bf = 0;
samux 1:80ab0d068708 291 } else {
samux 1:80ab0d068708 292 bf = 1;
samux 1:80ab0d068708 293 }
samux 1:80ab0d068708 294 }
samux 1:80ab0d068708 295
samux 1:80ab0d068708 296 // Find how many bytes were read
samux 1:80ab0d068708 297 *bytesRead = (uint32_t) (endpointState[endpoint].maxPacket - BYTES_REMAINING(ep[PHY_TO_LOG(endpoint)].out[bf]));
samux 1:80ab0d068708 298
samux 1:80ab0d068708 299 // Copy data
samux 1:80ab0d068708 300 USBMemCopy(data, ct->out, *bytesRead);
samux 1:80ab0d068708 301 return EP_COMPLETED;
samux 1:80ab0d068708 302 }
samux 1:80ab0d068708 303 }
samux 1:80ab0d068708 304
samux 1:80ab0d068708 305 void USBHAL::EP0getWriteResult(void) {
samux 1:80ab0d068708 306 // Complete an endpoint 0 write
samux 1:80ab0d068708 307
samux 1:80ab0d068708 308 // Nothing required for this target
samux 1:80ab0d068708 309 return;
samux 1:80ab0d068708 310 }
samux 1:80ab0d068708 311
samux 1:80ab0d068708 312 void USBHAL::EP0stall(void) {
samux 1:80ab0d068708 313 ep[0].in[0] = CMDSTS_S;
samux 1:80ab0d068708 314 ep[0].out[0] = CMDSTS_S;
samux 1:80ab0d068708 315 }
samux 1:80ab0d068708 316
samux 1:80ab0d068708 317 void USBHAL::setAddress(uint8_t address) {
samux 1:80ab0d068708 318 devCmdStat &= ~DEV_ADDR_MASK;
samux 1:80ab0d068708 319 devCmdStat |= DEV_ADDR(address);
samux 1:80ab0d068708 320 LPC_USB->DEVCMDSTAT = devCmdStat;
samux 1:80ab0d068708 321 }
samux 1:80ab0d068708 322
samux 1:80ab0d068708 323 EP_STATUS USBHAL::endpointWrite(uint8_t endpoint, uint8_t *data, uint32_t size) {
samux 1:80ab0d068708 324 uint32_t flags = 0;
samux 1:80ab0d068708 325 uint32_t bf;
samux 1:80ab0d068708 326
samux 1:80ab0d068708 327 // Validate parameters
samux 1:80ab0d068708 328 if (data == NULL) {
samux 1:80ab0d068708 329 return EP_INVALID;
samux 1:80ab0d068708 330 }
samux 1:80ab0d068708 331
samux 1:80ab0d068708 332 if (endpoint > LAST_PHYSICAL_ENDPOINT) {
samux 1:80ab0d068708 333 return EP_INVALID;
samux 1:80ab0d068708 334 }
samux 1:80ab0d068708 335
samux 1:80ab0d068708 336 if ((endpoint==EP0IN) || (endpoint==EP0OUT)) {
samux 1:80ab0d068708 337 return EP_INVALID;
samux 1:80ab0d068708 338 }
samux 1:80ab0d068708 339
samux 1:80ab0d068708 340 if (size > endpointState[endpoint].maxPacket) {
samux 1:80ab0d068708 341 return EP_INVALID;
samux 1:80ab0d068708 342 }
samux 1:80ab0d068708 343
samux 1:80ab0d068708 344 if (LPC_USB->EPBUFCFG & EP(endpoint)) {
samux 1:80ab0d068708 345 // Double buffered
samux 1:80ab0d068708 346 if (LPC_USB->EPINUSE & EP(endpoint)) {
samux 1:80ab0d068708 347 bf = 1;
samux 1:80ab0d068708 348 } else {
samux 1:80ab0d068708 349 bf = 0;
samux 1:80ab0d068708 350 }
samux 1:80ab0d068708 351 } else {
samux 1:80ab0d068708 352 // Single buffered
samux 1:80ab0d068708 353 bf = 0;
samux 1:80ab0d068708 354 }
samux 1:80ab0d068708 355
samux 1:80ab0d068708 356 // Check if already active
samux 1:80ab0d068708 357 if (ep[PHY_TO_LOG(endpoint)].in[bf] & CMDSTS_A) {
samux 1:80ab0d068708 358 return EP_INVALID;
samux 1:80ab0d068708 359 }
samux 1:80ab0d068708 360
samux 1:80ab0d068708 361 // Check if stalled
samux 1:80ab0d068708 362 if (ep[PHY_TO_LOG(endpoint)].in[bf] & CMDSTS_S) {
samux 1:80ab0d068708 363 return EP_STALLED;
samux 1:80ab0d068708 364 }
samux 1:80ab0d068708 365
samux 1:80ab0d068708 366 // Copy data to USB RAM
samux 1:80ab0d068708 367 USBMemCopy((uint8_t *)endpointState[endpoint].buffer[bf], data, size);
samux 1:80ab0d068708 368
samux 1:80ab0d068708 369 // Add options
samux 1:80ab0d068708 370 if (endpointState[endpoint].options & RATE_FEEDBACK_MODE) {
samux 1:80ab0d068708 371 flags |= CMDSTS_RF;
samux 1:80ab0d068708 372 }
samux 1:80ab0d068708 373
samux 1:80ab0d068708 374 if (endpointState[endpoint].options & ISOCHRONOUS) {
samux 1:80ab0d068708 375 flags |= CMDSTS_T;
samux 1:80ab0d068708 376 }
samux 1:80ab0d068708 377
samux 1:80ab0d068708 378 // Add transfer
samux 1:80ab0d068708 379 ep[PHY_TO_LOG(endpoint)].in[bf] = CMDSTS_ADDRESS_OFFSET( \
samux 1:80ab0d068708 380 endpointState[endpoint].buffer[bf]) \
samux 1:80ab0d068708 381 | CMDSTS_NBYTES(size) | CMDSTS_A | flags;
samux 1:80ab0d068708 382
samux 1:80ab0d068708 383 return EP_PENDING;
samux 1:80ab0d068708 384 }
samux 1:80ab0d068708 385
samux 1:80ab0d068708 386 EP_STATUS USBHAL::endpointWriteResult(uint8_t endpoint) {
samux 1:80ab0d068708 387 uint32_t bf;
samux 1:80ab0d068708 388 // Validate parameters
samux 1:80ab0d068708 389
samux 1:80ab0d068708 390 if (endpoint > LAST_PHYSICAL_ENDPOINT) {
samux 1:80ab0d068708 391 return EP_INVALID;
samux 1:80ab0d068708 392 }
samux 1:80ab0d068708 393
samux 1:80ab0d068708 394 if (OUT_EP(endpoint)) {
samux 1:80ab0d068708 395 return EP_INVALID;
samux 1:80ab0d068708 396 }
samux 1:80ab0d068708 397
samux 1:80ab0d068708 398 if (LPC_USB->EPBUFCFG & EP(endpoint)) {
samux 1:80ab0d068708 399 // Double buffered // TODO: FIX THIS
samux 1:80ab0d068708 400 if (LPC_USB->EPINUSE & EP(endpoint)) {
samux 1:80ab0d068708 401 bf = 1;
samux 1:80ab0d068708 402 } else {
samux 1:80ab0d068708 403 bf = 0;
samux 1:80ab0d068708 404 }
samux 1:80ab0d068708 405 } else {
samux 1:80ab0d068708 406 // Single buffered
samux 1:80ab0d068708 407 bf = 0;
samux 1:80ab0d068708 408 }
samux 1:80ab0d068708 409
samux 1:80ab0d068708 410 // Check if endpoint still active
samux 1:80ab0d068708 411 if (ep[PHY_TO_LOG(endpoint)].in[bf] & CMDSTS_A) {
samux 1:80ab0d068708 412 return EP_PENDING;
samux 1:80ab0d068708 413 }
samux 1:80ab0d068708 414
samux 1:80ab0d068708 415 // Check if stalled
samux 1:80ab0d068708 416 if (ep[PHY_TO_LOG(endpoint)].in[bf] & CMDSTS_S) {
samux 1:80ab0d068708 417 return EP_STALLED;
samux 1:80ab0d068708 418 }
samux 1:80ab0d068708 419
samux 1:80ab0d068708 420 return EP_COMPLETED;
samux 1:80ab0d068708 421 }
samux 1:80ab0d068708 422
samux 1:80ab0d068708 423 void USBHAL::stallEndpoint(uint8_t endpoint) {
samux 1:80ab0d068708 424
samux 1:80ab0d068708 425 // TODO: should this clear active bit?
samux 1:80ab0d068708 426
samux 1:80ab0d068708 427 if (IN_EP(endpoint)) {
samux 1:80ab0d068708 428 ep[PHY_TO_LOG(endpoint)].in[0] |= CMDSTS_S;
samux 1:80ab0d068708 429 ep[PHY_TO_LOG(endpoint)].in[1] |= CMDSTS_S;
samux 1:80ab0d068708 430 } else {
samux 1:80ab0d068708 431 ep[PHY_TO_LOG(endpoint)].out[0] |= CMDSTS_S;
samux 1:80ab0d068708 432 ep[PHY_TO_LOG(endpoint)].out[1] |= CMDSTS_S;
samux 1:80ab0d068708 433 }
samux 1:80ab0d068708 434 }
samux 1:80ab0d068708 435
samux 1:80ab0d068708 436 void USBHAL::unstallEndpoint(uint8_t endpoint) {
samux 1:80ab0d068708 437 if (LPC_USB->EPBUFCFG & EP(endpoint)) {
samux 1:80ab0d068708 438 // Double buffered
samux 1:80ab0d068708 439 if (IN_EP(endpoint)) {
samux 1:80ab0d068708 440 ep[PHY_TO_LOG(endpoint)].in[0] = 0; // S = 0
samux 1:80ab0d068708 441 ep[PHY_TO_LOG(endpoint)].in[1] = 0; // S = 0
samux 1:80ab0d068708 442
samux 1:80ab0d068708 443 if (LPC_USB->EPINUSE & EP(endpoint)) {
samux 1:80ab0d068708 444 ep[PHY_TO_LOG(endpoint)].in[1] = CMDSTS_TR; // S =0, TR=1, TV = 0
samux 1:80ab0d068708 445 } else {
samux 1:80ab0d068708 446 ep[PHY_TO_LOG(endpoint)].in[0] = CMDSTS_TR; // S =0, TR=1, TV = 0
samux 1:80ab0d068708 447 }
samux 1:80ab0d068708 448 } else {
samux 1:80ab0d068708 449 ep[PHY_TO_LOG(endpoint)].out[0] = 0; // S = 0
samux 1:80ab0d068708 450 ep[PHY_TO_LOG(endpoint)].out[1] = 0; // S = 0
samux 1:80ab0d068708 451
samux 1:80ab0d068708 452 if (LPC_USB->EPINUSE & EP(endpoint)) {
samux 1:80ab0d068708 453 ep[PHY_TO_LOG(endpoint)].out[1] = CMDSTS_TR; // S =0, TR=1, TV = 0
samux 1:80ab0d068708 454 } else {
samux 1:80ab0d068708 455 ep[PHY_TO_LOG(endpoint)].out[0] = CMDSTS_TR; // S =0, TR=1, TV = 0
samux 1:80ab0d068708 456 }
samux 1:80ab0d068708 457 }
samux 1:80ab0d068708 458 } else {
samux 1:80ab0d068708 459 // Single buffered
samux 1:80ab0d068708 460 if (IN_EP(endpoint)) {
samux 1:80ab0d068708 461 ep[PHY_TO_LOG(endpoint)].in[0] = CMDSTS_TR; // S=0, TR=1, TV = 0
samux 1:80ab0d068708 462 } else {
samux 1:80ab0d068708 463 ep[PHY_TO_LOG(endpoint)].out[0] = CMDSTS_TR; // S=0, TR=1, TV = 0
samux 1:80ab0d068708 464 }
samux 1:80ab0d068708 465 }
samux 1:80ab0d068708 466 }
samux 1:80ab0d068708 467
samux 1:80ab0d068708 468 bool USBHAL::getEndpointStallState(unsigned char endpoint) {
samux 1:80ab0d068708 469 if (IN_EP(endpoint)) {
samux 1:80ab0d068708 470 if (LPC_USB->EPINUSE & EP(endpoint)) {
samux 1:80ab0d068708 471 if (ep[PHY_TO_LOG(endpoint)].in[1] & CMDSTS_S) {
samux 1:80ab0d068708 472 return true;
samux 1:80ab0d068708 473 }
samux 1:80ab0d068708 474 } else {
samux 1:80ab0d068708 475 if (ep[PHY_TO_LOG(endpoint)].in[0] & CMDSTS_S) {
samux 1:80ab0d068708 476 return true;
samux 1:80ab0d068708 477 }
samux 1:80ab0d068708 478 }
samux 1:80ab0d068708 479 } else {
samux 1:80ab0d068708 480 if (LPC_USB->EPINUSE & EP(endpoint)) {
samux 1:80ab0d068708 481 if (ep[PHY_TO_LOG(endpoint)].out[1] & CMDSTS_S) {
samux 1:80ab0d068708 482 return true;
samux 1:80ab0d068708 483 }
samux 1:80ab0d068708 484 } else {
samux 1:80ab0d068708 485 if (ep[PHY_TO_LOG(endpoint)].out[0] & CMDSTS_S) {
samux 1:80ab0d068708 486 return true;
samux 1:80ab0d068708 487 }
samux 1:80ab0d068708 488 }
samux 1:80ab0d068708 489 }
samux 1:80ab0d068708 490
samux 1:80ab0d068708 491 return false;
samux 1:80ab0d068708 492 }
samux 1:80ab0d068708 493
samux 1:80ab0d068708 494 bool USBHAL::realiseEndpoint(uint8_t endpoint, uint32_t maxPacket, uint32_t options) {
samux 1:80ab0d068708 495 uint32_t tmpEpRamPtr;
samux 1:80ab0d068708 496
samux 1:80ab0d068708 497 if (endpoint > LAST_PHYSICAL_ENDPOINT) {
samux 1:80ab0d068708 498 return false;
samux 1:80ab0d068708 499 }
samux 1:80ab0d068708 500
samux 1:80ab0d068708 501 // Not applicable to the control endpoints
samux 1:80ab0d068708 502 if ((endpoint==EP0IN) || (endpoint==EP0OUT)) {
samux 1:80ab0d068708 503 return false;
samux 1:80ab0d068708 504 }
samux 1:80ab0d068708 505
samux 1:80ab0d068708 506 // Allocate buffers in USB RAM
samux 1:80ab0d068708 507 tmpEpRamPtr = epRamPtr;
samux 1:80ab0d068708 508
samux 1:80ab0d068708 509 // Must be 64 byte aligned
samux 1:80ab0d068708 510 tmpEpRamPtr = ROUND_UP_TO_MULTIPLE(tmpEpRamPtr, 64);
samux 1:80ab0d068708 511
samux 1:80ab0d068708 512 if ((tmpEpRamPtr + maxPacket) > (USB_RAM_START + USB_RAM_SIZE)) {
samux 1:80ab0d068708 513 // Out of memory
samux 1:80ab0d068708 514 return false;
samux 1:80ab0d068708 515 }
samux 1:80ab0d068708 516
samux 1:80ab0d068708 517 // Allocate first buffer
samux 1:80ab0d068708 518 endpointState[endpoint].buffer[0] = tmpEpRamPtr;
samux 1:80ab0d068708 519 tmpEpRamPtr += maxPacket;
samux 1:80ab0d068708 520
samux 1:80ab0d068708 521 if (!(options & SINGLE_BUFFERED)) {
samux 1:80ab0d068708 522 // Must be 64 byte aligned
samux 1:80ab0d068708 523 tmpEpRamPtr = ROUND_UP_TO_MULTIPLE(tmpEpRamPtr, 64);
samux 1:80ab0d068708 524
samux 1:80ab0d068708 525 if ((tmpEpRamPtr + maxPacket) > (USB_RAM_START + USB_RAM_SIZE)) {
samux 1:80ab0d068708 526 // Out of memory
samux 1:80ab0d068708 527 return false;
samux 1:80ab0d068708 528 }
samux 1:80ab0d068708 529
samux 1:80ab0d068708 530 // Allocate second buffer
samux 1:80ab0d068708 531 endpointState[endpoint].buffer[1] = tmpEpRamPtr;
samux 1:80ab0d068708 532 tmpEpRamPtr += maxPacket;
samux 1:80ab0d068708 533 }
samux 1:80ab0d068708 534
samux 1:80ab0d068708 535 // Commit to this USB RAM allocation
samux 1:80ab0d068708 536 epRamPtr = tmpEpRamPtr;
samux 1:80ab0d068708 537
samux 1:80ab0d068708 538 // Remaining endpoint state values
samux 1:80ab0d068708 539 endpointState[endpoint].maxPacket = maxPacket;
samux 1:80ab0d068708 540 endpointState[endpoint].options = options;
samux 1:80ab0d068708 541
samux 1:80ab0d068708 542 // Enable double buffering if required
samux 1:80ab0d068708 543 if (options & SINGLE_BUFFERED) {
samux 1:80ab0d068708 544 LPC_USB->EPBUFCFG &= ~EP(endpoint);
samux 1:80ab0d068708 545 } else {
samux 1:80ab0d068708 546 // Double buffered
samux 1:80ab0d068708 547 LPC_USB->EPBUFCFG |= EP(endpoint);
samux 1:80ab0d068708 548 }
samux 1:80ab0d068708 549
samux 1:80ab0d068708 550 // Enable interrupt
samux 1:80ab0d068708 551 LPC_USB->INTEN |= EP(endpoint);
samux 1:80ab0d068708 552
samux 1:80ab0d068708 553 // Enable endpoint
samux 1:80ab0d068708 554 unstallEndpoint(endpoint);
samux 1:80ab0d068708 555 return true;
samux 1:80ab0d068708 556 }
samux 1:80ab0d068708 557
samux 1:80ab0d068708 558 void USBHAL::remoteWakeup(void) {
samux 1:80ab0d068708 559 // Clearing DSUS bit initiates a remote wakeup if the
samux 1:80ab0d068708 560 // device is currently enabled and suspended - otherwise
samux 1:80ab0d068708 561 // it has no effect.
samux 1:80ab0d068708 562 LPC_USB->DEVCMDSTAT = devCmdStat & ~DSUS;
samux 1:80ab0d068708 563 }
samux 1:80ab0d068708 564
samux 1:80ab0d068708 565
samux 1:80ab0d068708 566 static void disableEndpoints(void) {
samux 1:80ab0d068708 567 uint32_t logEp;
samux 1:80ab0d068708 568
samux 1:80ab0d068708 569 // Ref. Table 158 "When a bus reset is received, software
samux 1:80ab0d068708 570 // must set the disable bit of all endpoints to 1".
samux 1:80ab0d068708 571
samux 1:80ab0d068708 572 for (logEp = 1; logEp < NUMBER_OF_LOGICAL_ENDPOINTS; logEp++) {
samux 1:80ab0d068708 573 ep[logEp].out[0] = CMDSTS_D;
samux 1:80ab0d068708 574 ep[logEp].out[1] = CMDSTS_D;
samux 1:80ab0d068708 575 ep[logEp].in[0] = CMDSTS_D;
samux 1:80ab0d068708 576 ep[logEp].in[1] = CMDSTS_D;
samux 1:80ab0d068708 577 }
samux 1:80ab0d068708 578
samux 1:80ab0d068708 579 // Start of USB RAM for endpoints > 0
samux 1:80ab0d068708 580 epRamPtr = usbRamPtr;
samux 1:80ab0d068708 581 }
samux 1:80ab0d068708 582
samux 1:80ab0d068708 583
samux 1:80ab0d068708 584
samux 1:80ab0d068708 585 void USBHAL::_usbisr(void) {
samux 1:80ab0d068708 586 instance->usbisr();
samux 1:80ab0d068708 587 }
samux 1:80ab0d068708 588
samux 1:80ab0d068708 589 void USBHAL::usbisr(void) {
samux 1:80ab0d068708 590 // Start of frame
samux 1:80ab0d068708 591 if (LPC_USB->INTSTAT & FRAME_INT) {
samux 1:80ab0d068708 592 // Clear SOF interrupt
samux 1:80ab0d068708 593 LPC_USB->INTSTAT = FRAME_INT;
samux 1:80ab0d068708 594
samux 1:80ab0d068708 595 // SOF event, read frame number
samux 1:80ab0d068708 596 SOF(FRAME_NR(LPC_USB->INFO));
samux 1:80ab0d068708 597 }
samux 1:80ab0d068708 598
samux 1:80ab0d068708 599 // Device state
samux 1:80ab0d068708 600 if (LPC_USB->INTSTAT & DEV_INT) {
samux 1:80ab0d068708 601 LPC_USB->INTSTAT = DEV_INT;
samux 1:80ab0d068708 602
samux 1:80ab0d068708 603 if (LPC_USB->DEVCMDSTAT & DSUS_C) {
samux 1:80ab0d068708 604 // Suspend status changed
samux 1:80ab0d068708 605 LPC_USB->DEVCMDSTAT = devCmdStat | DSUS_C;
samux 1:80ab0d068708 606 if((LPC_USB->DEVCMDSTAT & DSUS) != 0) {
samux 1:80ab0d068708 607 suspendStateChanged(1);
samux 1:80ab0d068708 608 }
samux 1:80ab0d068708 609 }
samux 1:80ab0d068708 610
samux 1:80ab0d068708 611 if (LPC_USB->DEVCMDSTAT & DRES_C) {
samux 1:80ab0d068708 612 // Bus reset
samux 1:80ab0d068708 613 LPC_USB->DEVCMDSTAT = devCmdStat | DRES_C;
samux 1:80ab0d068708 614
samux 1:80ab0d068708 615 suspendStateChanged(0);
samux 1:80ab0d068708 616
samux 1:80ab0d068708 617 // Disable endpoints > 0
samux 1:80ab0d068708 618 disableEndpoints();
samux 1:80ab0d068708 619
samux 1:80ab0d068708 620 // Bus reset event
samux 1:80ab0d068708 621 busReset();
samux 1:80ab0d068708 622 }
samux 1:80ab0d068708 623 }
samux 1:80ab0d068708 624
samux 1:80ab0d068708 625 // Endpoint 0
samux 1:80ab0d068708 626 if (LPC_USB->INTSTAT & EP(EP0OUT)) {
samux 1:80ab0d068708 627 // Clear EP0OUT/SETUP interrupt
samux 1:80ab0d068708 628 LPC_USB->INTSTAT = EP(EP0OUT);
samux 1:80ab0d068708 629
samux 1:80ab0d068708 630 // Check if SETUP
samux 1:80ab0d068708 631 if (LPC_USB->DEVCMDSTAT & SETUP) {
samux 1:80ab0d068708 632 // Clear Active and Stall bits for EP0
samux 1:80ab0d068708 633 // Documentation does not make it clear if we must use the
samux 1:80ab0d068708 634 // EPSKIP register to achieve this, Fig. 16 and NXP reference
samux 1:80ab0d068708 635 // code suggests we can just clear the Active bits - check with
samux 1:80ab0d068708 636 // NXP to be sure.
samux 1:80ab0d068708 637 ep[0].in[0] = 0;
samux 1:80ab0d068708 638 ep[0].out[0] = 0;
samux 1:80ab0d068708 639
samux 1:80ab0d068708 640 // Clear EP0IN interrupt
samux 1:80ab0d068708 641 LPC_USB->INTSTAT = EP(EP0IN);
samux 1:80ab0d068708 642
samux 1:80ab0d068708 643 // Clear SETUP (and INTONNAK_CI/O) in device status register
samux 1:80ab0d068708 644 LPC_USB->DEVCMDSTAT = devCmdStat | SETUP;
samux 1:80ab0d068708 645
samux 1:80ab0d068708 646 // EP0 SETUP event (SETUP data received)
samux 1:80ab0d068708 647 EP0setupCallback();
samux 1:80ab0d068708 648 } else {
samux 1:80ab0d068708 649 // EP0OUT ACK event (OUT data received)
samux 1:80ab0d068708 650 EP0out();
samux 1:80ab0d068708 651 }
samux 1:80ab0d068708 652 }
samux 1:80ab0d068708 653
samux 1:80ab0d068708 654 if (LPC_USB->INTSTAT & EP(EP0IN)) {
samux 1:80ab0d068708 655 // Clear EP0IN interrupt
samux 1:80ab0d068708 656 LPC_USB->INTSTAT = EP(EP0IN);
samux 1:80ab0d068708 657
samux 1:80ab0d068708 658 // EP0IN ACK event (IN data sent)
samux 1:80ab0d068708 659 EP0in();
samux 1:80ab0d068708 660 }
samux 1:80ab0d068708 661
samux 1:80ab0d068708 662 if (LPC_USB->INTSTAT & EP(EP1IN)) {
samux 1:80ab0d068708 663 // Clear EP1IN interrupt
samux 1:80ab0d068708 664 LPC_USB->INTSTAT = EP(EP1IN);
samux 1:80ab0d068708 665 epComplete |= EP(EP1IN);
samux 1:80ab0d068708 666 if (EP1_IN_callback())
samux 1:80ab0d068708 667 epComplete &= ~EP(EP1IN);
samux 1:80ab0d068708 668 }
samux 1:80ab0d068708 669
samux 1:80ab0d068708 670 if (LPC_USB->INTSTAT & EP(EP1OUT)) {
samux 1:80ab0d068708 671 // Clear EP1OUT interrupt
samux 1:80ab0d068708 672 LPC_USB->INTSTAT = EP(EP1OUT);
samux 1:80ab0d068708 673 epComplete |= EP(EP1OUT);
samux 1:80ab0d068708 674 if (EP1_OUT_callback())
samux 1:80ab0d068708 675 epComplete &= ~EP(EP1OUT);
samux 1:80ab0d068708 676 }
samux 1:80ab0d068708 677
samux 1:80ab0d068708 678 if (LPC_USB->INTSTAT & EP(EP2IN)) {
samux 1:80ab0d068708 679 // Clear EPBULK_IN interrupt
samux 1:80ab0d068708 680 LPC_USB->INTSTAT = EP(EP2IN);
samux 1:80ab0d068708 681 epComplete |= EP(EP2IN);
samux 1:80ab0d068708 682 if (EP2_IN_callback())
samux 1:80ab0d068708 683 epComplete &= ~EP(EP2IN);
samux 1:80ab0d068708 684 }
samux 1:80ab0d068708 685
samux 1:80ab0d068708 686 if (LPC_USB->INTSTAT & EP(EP2OUT)) {
samux 1:80ab0d068708 687 // Clear EPBULK_OUT interrupt
samux 1:80ab0d068708 688 LPC_USB->INTSTAT = EP(EP2OUT);
samux 1:80ab0d068708 689 epComplete |= EP(EP2OUT);
samux 1:80ab0d068708 690 //Call callback function. If true, clear epComplete
samux 1:80ab0d068708 691 if (EP2_OUT_callback())
samux 1:80ab0d068708 692 epComplete &= ~EP(EP2OUT);
samux 1:80ab0d068708 693 }
samux 1:80ab0d068708 694
samux 1:80ab0d068708 695 if (LPC_USB->INTSTAT & EP(EP3IN)) {
samux 1:80ab0d068708 696 // Clear EP3_IN interrupt
samux 1:80ab0d068708 697 LPC_USB->INTSTAT = EP(EP3IN);
samux 1:80ab0d068708 698 epComplete |= EP(EP3IN);
samux 1:80ab0d068708 699 if (EP3_IN_callback())
samux 1:80ab0d068708 700 epComplete &= ~EP(EP3IN);
samux 1:80ab0d068708 701 }
samux 1:80ab0d068708 702
samux 1:80ab0d068708 703 if (LPC_USB->INTSTAT & EP(EP3OUT)) {
samux 1:80ab0d068708 704 // Clear EP3_OUT interrupt
samux 1:80ab0d068708 705 LPC_USB->INTSTAT = EP(EP3OUT);
samux 1:80ab0d068708 706 epComplete |= EP(EP3OUT);
samux 1:80ab0d068708 707 //Call callback function. If true, clear epComplete
samux 1:80ab0d068708 708 if (EP3_OUT_callback())
samux 1:80ab0d068708 709 epComplete &= ~EP(EP3OUT);
samux 1:80ab0d068708 710 }
samux 1:80ab0d068708 711 }
samux 1:80ab0d068708 712
samux 1:80ab0d068708 713 #endif