Piotr Woźniak / Mbed 2 deprecated KL46Z-Lab2_fullll

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Dependencies:   MAG3110 MMA8451Q SLCD- TSI USBDevice mbed

USBDevice/USBDevice/USBHAL_LPC17.cpp@0:339b7abfa147, 2014-04-16 (annotated)

Committer:
Osator
Date:
Wed Apr 16 12:20:00 2014 +0000
Revision:
0:339b7abfa147
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Who changed what in which revision?

UserRevisionLine numberNew contents of line
Osator 0:339b7abfa147 1 /* Copyright (c) 2010-2011 mbed.org, MIT License
Osator 0:339b7abfa147 2 *
Osator 0:339b7abfa147 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
Osator 0:339b7abfa147 4 * and associated documentation files (the "Software"), to deal in the Software without
Osator 0:339b7abfa147 5 * restriction, including without limitation the rights to use, copy, modify, merge, publish,
Osator 0:339b7abfa147 6 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
Osator 0:339b7abfa147 7 * Software is furnished to do so, subject to the following conditions:
Osator 0:339b7abfa147 8 *
Osator 0:339b7abfa147 9 * The above copyright notice and this permission notice shall be included in all copies or
Osator 0:339b7abfa147 10 * substantial portions of the Software.
Osator 0:339b7abfa147 11 *
Osator 0:339b7abfa147 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
Osator 0:339b7abfa147 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
Osator 0:339b7abfa147 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
Osator 0:339b7abfa147 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
Osator 0:339b7abfa147 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Osator 0:339b7abfa147 17 */
Osator 0:339b7abfa147 18
Osator 0:339b7abfa147 19 #if defined(TARGET_LPC1768) || defined(TARGET_LPC2368)
Osator 0:339b7abfa147 20
Osator 0:339b7abfa147 21 #include "USBHAL.h"
Osator 0:339b7abfa147 22
Osator 0:339b7abfa147 23
Osator 0:339b7abfa147 24 // Get endpoint direction
Osator 0:339b7abfa147 25 #define IN_EP(endpoint) ((endpoint) & 1U ? true : false)
Osator 0:339b7abfa147 26 #define OUT_EP(endpoint) ((endpoint) & 1U ? false : true)
Osator 0:339b7abfa147 27
Osator 0:339b7abfa147 28 // Convert physical endpoint number to register bit
Osator 0:339b7abfa147 29 #define EP(endpoint) (1UL<<endpoint)
Osator 0:339b7abfa147 30
Osator 0:339b7abfa147 31 // Power Control for Peripherals register
Osator 0:339b7abfa147 32 #define PCUSB (1UL<<31)
Osator 0:339b7abfa147 33
Osator 0:339b7abfa147 34 // USB Clock Control register
Osator 0:339b7abfa147 35 #define DEV_CLK_EN (1UL<<1)
Osator 0:339b7abfa147 36 #define AHB_CLK_EN (1UL<<4)
Osator 0:339b7abfa147 37
Osator 0:339b7abfa147 38 // USB Clock Status register
Osator 0:339b7abfa147 39 #define DEV_CLK_ON (1UL<<1)
Osator 0:339b7abfa147 40 #define AHB_CLK_ON (1UL<<4)
Osator 0:339b7abfa147 41
Osator 0:339b7abfa147 42 // USB Device Interupt registers
Osator 0:339b7abfa147 43 #define FRAME (1UL<<0)
Osator 0:339b7abfa147 44 #define EP_FAST (1UL<<1)
Osator 0:339b7abfa147 45 #define EP_SLOW (1UL<<2)
Osator 0:339b7abfa147 46 #define DEV_STAT (1UL<<3)
Osator 0:339b7abfa147 47 #define CCEMPTY (1UL<<4)
Osator 0:339b7abfa147 48 #define CDFULL (1UL<<5)
Osator 0:339b7abfa147 49 #define RxENDPKT (1UL<<6)
Osator 0:339b7abfa147 50 #define TxENDPKT (1UL<<7)
Osator 0:339b7abfa147 51 #define EP_RLZED (1UL<<8)
Osator 0:339b7abfa147 52 #define ERR_INT (1UL<<9)
Osator 0:339b7abfa147 53
Osator 0:339b7abfa147 54 // USB Control register
Osator 0:339b7abfa147 55 #define RD_EN (1<<0)
Osator 0:339b7abfa147 56 #define WR_EN (1<<1)
Osator 0:339b7abfa147 57 #define LOG_ENDPOINT(endpoint) ((endpoint>>1)<<2)
Osator 0:339b7abfa147 58
Osator 0:339b7abfa147 59 // USB Receive Packet Length register
Osator 0:339b7abfa147 60 #define DV (1UL<<10)
Osator 0:339b7abfa147 61 #define PKT_RDY (1UL<<11)
Osator 0:339b7abfa147 62 #define PKT_LNGTH_MASK (0x3ff)
Osator 0:339b7abfa147 63
Osator 0:339b7abfa147 64 // Serial Interface Engine (SIE)
Osator 0:339b7abfa147 65 #define SIE_WRITE (0x01)
Osator 0:339b7abfa147 66 #define SIE_READ (0x02)
Osator 0:339b7abfa147 67 #define SIE_COMMAND (0x05)
Osator 0:339b7abfa147 68 #define SIE_CMD_CODE(phase, data) ((phase<<8)|(data<<16))
Osator 0:339b7abfa147 69
Osator 0:339b7abfa147 70 // SIE Command codes
Osator 0:339b7abfa147 71 #define SIE_CMD_SET_ADDRESS (0xD0)
Osator 0:339b7abfa147 72 #define SIE_CMD_CONFIGURE_DEVICE (0xD8)
Osator 0:339b7abfa147 73 #define SIE_CMD_SET_MODE (0xF3)
Osator 0:339b7abfa147 74 #define SIE_CMD_READ_FRAME_NUMBER (0xF5)
Osator 0:339b7abfa147 75 #define SIE_CMD_READ_TEST_REGISTER (0xFD)
Osator 0:339b7abfa147 76 #define SIE_CMD_SET_DEVICE_STATUS (0xFE)
Osator 0:339b7abfa147 77 #define SIE_CMD_GET_DEVICE_STATUS (0xFE)
Osator 0:339b7abfa147 78 #define SIE_CMD_GET_ERROR_CODE (0xFF)
Osator 0:339b7abfa147 79 #define SIE_CMD_READ_ERROR_STATUS (0xFB)
Osator 0:339b7abfa147 80
Osator 0:339b7abfa147 81 #define SIE_CMD_SELECT_ENDPOINT(endpoint) (0x00+endpoint)
Osator 0:339b7abfa147 82 #define SIE_CMD_SELECT_ENDPOINT_CLEAR_INTERRUPT(endpoint) (0x40+endpoint)
Osator 0:339b7abfa147 83 #define SIE_CMD_SET_ENDPOINT_STATUS(endpoint) (0x40+endpoint)
Osator 0:339b7abfa147 84
Osator 0:339b7abfa147 85 #define SIE_CMD_CLEAR_BUFFER (0xF2)
Osator 0:339b7abfa147 86 #define SIE_CMD_VALIDATE_BUFFER (0xFA)
Osator 0:339b7abfa147 87
Osator 0:339b7abfa147 88 // SIE Device Status register
Osator 0:339b7abfa147 89 #define SIE_DS_CON (1<<0)
Osator 0:339b7abfa147 90 #define SIE_DS_CON_CH (1<<1)
Osator 0:339b7abfa147 91 #define SIE_DS_SUS (1<<2)
Osator 0:339b7abfa147 92 #define SIE_DS_SUS_CH (1<<3)
Osator 0:339b7abfa147 93 #define SIE_DS_RST (1<<4)
Osator 0:339b7abfa147 94
Osator 0:339b7abfa147 95 // SIE Device Set Address register
Osator 0:339b7abfa147 96 #define SIE_DSA_DEV_EN (1<<7)
Osator 0:339b7abfa147 97
Osator 0:339b7abfa147 98 // SIE Configue Device register
Osator 0:339b7abfa147 99 #define SIE_CONF_DEVICE (1<<0)
Osator 0:339b7abfa147 100
Osator 0:339b7abfa147 101 // Select Endpoint register
Osator 0:339b7abfa147 102 #define SIE_SE_FE (1<<0)
Osator 0:339b7abfa147 103 #define SIE_SE_ST (1<<1)
Osator 0:339b7abfa147 104 #define SIE_SE_STP (1<<2)
Osator 0:339b7abfa147 105 #define SIE_SE_PO (1<<3)
Osator 0:339b7abfa147 106 #define SIE_SE_EPN (1<<4)
Osator 0:339b7abfa147 107 #define SIE_SE_B_1_FULL (1<<5)
Osator 0:339b7abfa147 108 #define SIE_SE_B_2_FULL (1<<6)
Osator 0:339b7abfa147 109
Osator 0:339b7abfa147 110 // Set Endpoint Status command
Osator 0:339b7abfa147 111 #define SIE_SES_ST (1<<0)
Osator 0:339b7abfa147 112 #define SIE_SES_DA (1<<5)
Osator 0:339b7abfa147 113 #define SIE_SES_RF_MO (1<<6)
Osator 0:339b7abfa147 114 #define SIE_SES_CND_ST (1<<7)
Osator 0:339b7abfa147 115
Osator 0:339b7abfa147 116
Osator 0:339b7abfa147 117 USBHAL * USBHAL::instance;
Osator 0:339b7abfa147 118
Osator 0:339b7abfa147 119 static volatile int epComplete;
Osator 0:339b7abfa147 120 static uint32_t endpointStallState;
Osator 0:339b7abfa147 121
Osator 0:339b7abfa147 122 static void SIECommand(uint32_t command) {
Osator 0:339b7abfa147 123 // The command phase of a SIE transaction
Osator 0:339b7abfa147 124 LPC_USB->USBDevIntClr = CCEMPTY;
Osator 0:339b7abfa147 125 LPC_USB->USBCmdCode = SIE_CMD_CODE(SIE_COMMAND, command);
Osator 0:339b7abfa147 126 while (!(LPC_USB->USBDevIntSt & CCEMPTY));
Osator 0:339b7abfa147 127 }
Osator 0:339b7abfa147 128
Osator 0:339b7abfa147 129 static void SIEWriteData(uint8_t data) {
Osator 0:339b7abfa147 130 // The data write phase of a SIE transaction
Osator 0:339b7abfa147 131 LPC_USB->USBDevIntClr = CCEMPTY;
Osator 0:339b7abfa147 132 LPC_USB->USBCmdCode = SIE_CMD_CODE(SIE_WRITE, data);
Osator 0:339b7abfa147 133 while (!(LPC_USB->USBDevIntSt & CCEMPTY));
Osator 0:339b7abfa147 134 }
Osator 0:339b7abfa147 135
Osator 0:339b7abfa147 136 static uint8_t SIEReadData(uint32_t command) {
Osator 0:339b7abfa147 137 // The data read phase of a SIE transaction
Osator 0:339b7abfa147 138 LPC_USB->USBDevIntClr = CDFULL;
Osator 0:339b7abfa147 139 LPC_USB->USBCmdCode = SIE_CMD_CODE(SIE_READ, command);
Osator 0:339b7abfa147 140 while (!(LPC_USB->USBDevIntSt & CDFULL));
Osator 0:339b7abfa147 141 return (uint8_t)LPC_USB->USBCmdData;
Osator 0:339b7abfa147 142 }
Osator 0:339b7abfa147 143
Osator 0:339b7abfa147 144 static void SIEsetDeviceStatus(uint8_t status) {
Osator 0:339b7abfa147 145 // Write SIE device status register
Osator 0:339b7abfa147 146 SIECommand(SIE_CMD_SET_DEVICE_STATUS);
Osator 0:339b7abfa147 147 SIEWriteData(status);
Osator 0:339b7abfa147 148 }
Osator 0:339b7abfa147 149
Osator 0:339b7abfa147 150 static uint8_t SIEgetDeviceStatus(void) {
Osator 0:339b7abfa147 151 // Read SIE device status register
Osator 0:339b7abfa147 152 SIECommand(SIE_CMD_GET_DEVICE_STATUS);
Osator 0:339b7abfa147 153 return SIEReadData(SIE_CMD_GET_DEVICE_STATUS);
Osator 0:339b7abfa147 154 }
Osator 0:339b7abfa147 155
Osator 0:339b7abfa147 156 void SIEsetAddress(uint8_t address) {
Osator 0:339b7abfa147 157 // Write SIE device address register
Osator 0:339b7abfa147 158 SIECommand(SIE_CMD_SET_ADDRESS);
Osator 0:339b7abfa147 159 SIEWriteData((address & 0x7f) | SIE_DSA_DEV_EN);
Osator 0:339b7abfa147 160 }
Osator 0:339b7abfa147 161
Osator 0:339b7abfa147 162 static uint8_t SIEselectEndpoint(uint8_t endpoint) {
Osator 0:339b7abfa147 163 // SIE select endpoint command
Osator 0:339b7abfa147 164 SIECommand(SIE_CMD_SELECT_ENDPOINT(endpoint));
Osator 0:339b7abfa147 165 return SIEReadData(SIE_CMD_SELECT_ENDPOINT(endpoint));
Osator 0:339b7abfa147 166 }
Osator 0:339b7abfa147 167
Osator 0:339b7abfa147 168 static uint8_t SIEclearBuffer(void) {
Osator 0:339b7abfa147 169 // SIE clear buffer command
Osator 0:339b7abfa147 170 SIECommand(SIE_CMD_CLEAR_BUFFER);
Osator 0:339b7abfa147 171 return SIEReadData(SIE_CMD_CLEAR_BUFFER);
Osator 0:339b7abfa147 172 }
Osator 0:339b7abfa147 173
Osator 0:339b7abfa147 174 static void SIEvalidateBuffer(void) {
Osator 0:339b7abfa147 175 // SIE validate buffer command
Osator 0:339b7abfa147 176 SIECommand(SIE_CMD_VALIDATE_BUFFER);
Osator 0:339b7abfa147 177 }
Osator 0:339b7abfa147 178
Osator 0:339b7abfa147 179 static void SIEsetEndpointStatus(uint8_t endpoint, uint8_t status) {
Osator 0:339b7abfa147 180 // SIE set endpoint status command
Osator 0:339b7abfa147 181 SIECommand(SIE_CMD_SET_ENDPOINT_STATUS(endpoint));
Osator 0:339b7abfa147 182 SIEWriteData(status);
Osator 0:339b7abfa147 183 }
Osator 0:339b7abfa147 184
Osator 0:339b7abfa147 185 static uint16_t SIEgetFrameNumber(void) __attribute__ ((unused));
Osator 0:339b7abfa147 186 static uint16_t SIEgetFrameNumber(void) {
Osator 0:339b7abfa147 187 // Read current frame number
Osator 0:339b7abfa147 188 uint16_t lowByte;
Osator 0:339b7abfa147 189 uint16_t highByte;
Osator 0:339b7abfa147 190
Osator 0:339b7abfa147 191 SIECommand(SIE_CMD_READ_FRAME_NUMBER);
Osator 0:339b7abfa147 192 lowByte = SIEReadData(SIE_CMD_READ_FRAME_NUMBER);
Osator 0:339b7abfa147 193 highByte = SIEReadData(SIE_CMD_READ_FRAME_NUMBER);
Osator 0:339b7abfa147 194
Osator 0:339b7abfa147 195 return (highByte << 8) | lowByte;
Osator 0:339b7abfa147 196 }
Osator 0:339b7abfa147 197
Osator 0:339b7abfa147 198 static void SIEconfigureDevice(void) {
Osator 0:339b7abfa147 199 // SIE Configure device command
Osator 0:339b7abfa147 200 SIECommand(SIE_CMD_CONFIGURE_DEVICE);
Osator 0:339b7abfa147 201 SIEWriteData(SIE_CONF_DEVICE);
Osator 0:339b7abfa147 202 }
Osator 0:339b7abfa147 203
Osator 0:339b7abfa147 204 static void SIEunconfigureDevice(void) {
Osator 0:339b7abfa147 205 // SIE Configure device command
Osator 0:339b7abfa147 206 SIECommand(SIE_CMD_CONFIGURE_DEVICE);
Osator 0:339b7abfa147 207 SIEWriteData(0);
Osator 0:339b7abfa147 208 }
Osator 0:339b7abfa147 209
Osator 0:339b7abfa147 210 static void SIEconnect(void) {
Osator 0:339b7abfa147 211 // Connect USB device
Osator 0:339b7abfa147 212 uint8_t status = SIEgetDeviceStatus();
Osator 0:339b7abfa147 213 SIEsetDeviceStatus(status | SIE_DS_CON);
Osator 0:339b7abfa147 214 }
Osator 0:339b7abfa147 215
Osator 0:339b7abfa147 216
Osator 0:339b7abfa147 217 static void SIEdisconnect(void) {
Osator 0:339b7abfa147 218 // Disconnect USB device
Osator 0:339b7abfa147 219 uint8_t status = SIEgetDeviceStatus();
Osator 0:339b7abfa147 220 SIEsetDeviceStatus(status & ~SIE_DS_CON);
Osator 0:339b7abfa147 221 }
Osator 0:339b7abfa147 222
Osator 0:339b7abfa147 223
Osator 0:339b7abfa147 224 static uint8_t selectEndpointClearInterrupt(uint8_t endpoint) {
Osator 0:339b7abfa147 225 // Implemented using using EP_INT_CLR.
Osator 0:339b7abfa147 226 LPC_USB->USBEpIntClr = EP(endpoint);
Osator 0:339b7abfa147 227 while (!(LPC_USB->USBDevIntSt & CDFULL));
Osator 0:339b7abfa147 228 return (uint8_t)LPC_USB->USBCmdData;
Osator 0:339b7abfa147 229 }
Osator 0:339b7abfa147 230
Osator 0:339b7abfa147 231
Osator 0:339b7abfa147 232 static void enableEndpointEvent(uint8_t endpoint) {
Osator 0:339b7abfa147 233 // Enable an endpoint interrupt
Osator 0:339b7abfa147 234 LPC_USB->USBEpIntEn |= EP(endpoint);
Osator 0:339b7abfa147 235 }
Osator 0:339b7abfa147 236
Osator 0:339b7abfa147 237 static void disableEndpointEvent(uint8_t endpoint) __attribute__ ((unused));
Osator 0:339b7abfa147 238 static void disableEndpointEvent(uint8_t endpoint) {
Osator 0:339b7abfa147 239 // Disable an endpoint interrupt
Osator 0:339b7abfa147 240 LPC_USB->USBEpIntEn &= ~EP(endpoint);
Osator 0:339b7abfa147 241 }
Osator 0:339b7abfa147 242
Osator 0:339b7abfa147 243 static volatile uint32_t __attribute__((used)) dummyRead;
Osator 0:339b7abfa147 244 uint32_t USBHAL::endpointReadcore(uint8_t endpoint, uint8_t *buffer) {
Osator 0:339b7abfa147 245 // Read from an OUT endpoint
Osator 0:339b7abfa147 246 uint32_t size;
Osator 0:339b7abfa147 247 uint32_t i;
Osator 0:339b7abfa147 248 uint32_t data = 0;
Osator 0:339b7abfa147 249 uint8_t offset;
Osator 0:339b7abfa147 250
Osator 0:339b7abfa147 251 LPC_USB->USBCtrl = LOG_ENDPOINT(endpoint) | RD_EN;
Osator 0:339b7abfa147 252 while (!(LPC_USB->USBRxPLen & PKT_RDY));
Osator 0:339b7abfa147 253
Osator 0:339b7abfa147 254 size = LPC_USB->USBRxPLen & PKT_LNGTH_MASK;
Osator 0:339b7abfa147 255
Osator 0:339b7abfa147 256 offset = 0;
Osator 0:339b7abfa147 257
Osator 0:339b7abfa147 258 if (size > 0) {
Osator 0:339b7abfa147 259 for (i=0; i<size; i++) {
Osator 0:339b7abfa147 260 if (offset==0) {
Osator 0:339b7abfa147 261 // Fetch up to four bytes of data as a word
Osator 0:339b7abfa147 262 data = LPC_USB->USBRxData;
Osator 0:339b7abfa147 263 }
Osator 0:339b7abfa147 264
Osator 0:339b7abfa147 265 // extract a byte
Osator 0:339b7abfa147 266 *buffer = (data>>offset) & 0xff;
Osator 0:339b7abfa147 267 buffer++;
Osator 0:339b7abfa147 268
Osator 0:339b7abfa147 269 // move on to the next byte
Osator 0:339b7abfa147 270 offset = (offset + 8) % 32;
Osator 0:339b7abfa147 271 }
Osator 0:339b7abfa147 272 } else {
Osator 0:339b7abfa147 273 dummyRead = LPC_USB->USBRxData;
Osator 0:339b7abfa147 274 }
Osator 0:339b7abfa147 275
Osator 0:339b7abfa147 276 LPC_USB->USBCtrl = 0;
Osator 0:339b7abfa147 277
Osator 0:339b7abfa147 278 if ((endpoint >> 1) % 3 || (endpoint >> 1) == 0) {
Osator 0:339b7abfa147 279 SIEselectEndpoint(endpoint);
Osator 0:339b7abfa147 280 SIEclearBuffer();
Osator 0:339b7abfa147 281 }
Osator 0:339b7abfa147 282
Osator 0:339b7abfa147 283 return size;
Osator 0:339b7abfa147 284 }
Osator 0:339b7abfa147 285
Osator 0:339b7abfa147 286 static void endpointWritecore(uint8_t endpoint, uint8_t *buffer, uint32_t size) {
Osator 0:339b7abfa147 287 // Write to an IN endpoint
Osator 0:339b7abfa147 288 uint32_t temp, data;
Osator 0:339b7abfa147 289 uint8_t offset;
Osator 0:339b7abfa147 290
Osator 0:339b7abfa147 291 LPC_USB->USBCtrl = LOG_ENDPOINT(endpoint) | WR_EN;
Osator 0:339b7abfa147 292
Osator 0:339b7abfa147 293 LPC_USB->USBTxPLen = size;
Osator 0:339b7abfa147 294 offset = 0;
Osator 0:339b7abfa147 295 data = 0;
Osator 0:339b7abfa147 296
Osator 0:339b7abfa147 297 if (size>0) {
Osator 0:339b7abfa147 298 do {
Osator 0:339b7abfa147 299 // Fetch next data byte into a word-sized temporary variable
Osator 0:339b7abfa147 300 temp = *buffer++;
Osator 0:339b7abfa147 301
Osator 0:339b7abfa147 302 // Add to current data word
Osator 0:339b7abfa147 303 temp = temp << offset;
Osator 0:339b7abfa147 304 data = data | temp;
Osator 0:339b7abfa147 305
Osator 0:339b7abfa147 306 // move on to the next byte
Osator 0:339b7abfa147 307 offset = (offset + 8) % 32;
Osator 0:339b7abfa147 308 size--;
Osator 0:339b7abfa147 309
Osator 0:339b7abfa147 310 if ((offset==0) || (size==0)) {
Osator 0:339b7abfa147 311 // Write the word to the endpoint
Osator 0:339b7abfa147 312 LPC_USB->USBTxData = data;
Osator 0:339b7abfa147 313 data = 0;
Osator 0:339b7abfa147 314 }
Osator 0:339b7abfa147 315 } while (size>0);
Osator 0:339b7abfa147 316 } else {
Osator 0:339b7abfa147 317 LPC_USB->USBTxData = 0;
Osator 0:339b7abfa147 318 }
Osator 0:339b7abfa147 319
Osator 0:339b7abfa147 320 // Clear WR_EN to cover zero length packet case
Osator 0:339b7abfa147 321 LPC_USB->USBCtrl=0;
Osator 0:339b7abfa147 322
Osator 0:339b7abfa147 323 SIEselectEndpoint(endpoint);
Osator 0:339b7abfa147 324 SIEvalidateBuffer();
Osator 0:339b7abfa147 325 }
Osator 0:339b7abfa147 326
Osator 0:339b7abfa147 327 USBHAL::USBHAL(void) {
Osator 0:339b7abfa147 328 // Disable IRQ
Osator 0:339b7abfa147 329 NVIC_DisableIRQ(USB_IRQn);
Osator 0:339b7abfa147 330
Osator 0:339b7abfa147 331 // fill in callback array
Osator 0:339b7abfa147 332 epCallback[0] = &USBHAL::EP1_OUT_callback;
Osator 0:339b7abfa147 333 epCallback[1] = &USBHAL::EP1_IN_callback;
Osator 0:339b7abfa147 334 epCallback[2] = &USBHAL::EP2_OUT_callback;
Osator 0:339b7abfa147 335 epCallback[3] = &USBHAL::EP2_IN_callback;
Osator 0:339b7abfa147 336 epCallback[4] = &USBHAL::EP3_OUT_callback;
Osator 0:339b7abfa147 337 epCallback[5] = &USBHAL::EP3_IN_callback;
Osator 0:339b7abfa147 338 epCallback[6] = &USBHAL::EP4_OUT_callback;
Osator 0:339b7abfa147 339 epCallback[7] = &USBHAL::EP4_IN_callback;
Osator 0:339b7abfa147 340 epCallback[8] = &USBHAL::EP5_OUT_callback;
Osator 0:339b7abfa147 341 epCallback[9] = &USBHAL::EP5_IN_callback;
Osator 0:339b7abfa147 342 epCallback[10] = &USBHAL::EP6_OUT_callback;
Osator 0:339b7abfa147 343 epCallback[11] = &USBHAL::EP6_IN_callback;
Osator 0:339b7abfa147 344 epCallback[12] = &USBHAL::EP7_OUT_callback;
Osator 0:339b7abfa147 345 epCallback[13] = &USBHAL::EP7_IN_callback;
Osator 0:339b7abfa147 346 epCallback[14] = &USBHAL::EP8_OUT_callback;
Osator 0:339b7abfa147 347 epCallback[15] = &USBHAL::EP8_IN_callback;
Osator 0:339b7abfa147 348 epCallback[16] = &USBHAL::EP9_OUT_callback;
Osator 0:339b7abfa147 349 epCallback[17] = &USBHAL::EP9_IN_callback;
Osator 0:339b7abfa147 350 epCallback[18] = &USBHAL::EP10_OUT_callback;
Osator 0:339b7abfa147 351 epCallback[19] = &USBHAL::EP10_IN_callback;
Osator 0:339b7abfa147 352 epCallback[20] = &USBHAL::EP11_OUT_callback;
Osator 0:339b7abfa147 353 epCallback[21] = &USBHAL::EP11_IN_callback;
Osator 0:339b7abfa147 354 epCallback[22] = &USBHAL::EP12_OUT_callback;
Osator 0:339b7abfa147 355 epCallback[23] = &USBHAL::EP12_IN_callback;
Osator 0:339b7abfa147 356 epCallback[24] = &USBHAL::EP13_OUT_callback;
Osator 0:339b7abfa147 357 epCallback[25] = &USBHAL::EP13_IN_callback;
Osator 0:339b7abfa147 358 epCallback[26] = &USBHAL::EP14_OUT_callback;
Osator 0:339b7abfa147 359 epCallback[27] = &USBHAL::EP14_IN_callback;
Osator 0:339b7abfa147 360 epCallback[28] = &USBHAL::EP15_OUT_callback;
Osator 0:339b7abfa147 361 epCallback[29] = &USBHAL::EP15_IN_callback;
Osator 0:339b7abfa147 362
Osator 0:339b7abfa147 363 // Enable power to USB device controller
Osator 0:339b7abfa147 364 LPC_SC->PCONP |= PCUSB;
Osator 0:339b7abfa147 365
Osator 0:339b7abfa147 366 // Enable USB clocks
Osator 0:339b7abfa147 367 LPC_USB->USBClkCtrl |= DEV_CLK_EN | AHB_CLK_EN;
Osator 0:339b7abfa147 368 while (LPC_USB->USBClkSt != (DEV_CLK_ON | AHB_CLK_ON));
Osator 0:339b7abfa147 369
Osator 0:339b7abfa147 370 // Configure pins P0.29 and P0.30 to be USB D+ and USB D-
Osator 0:339b7abfa147 371 LPC_PINCON->PINSEL1 &= 0xc3ffffff;
Osator 0:339b7abfa147 372 LPC_PINCON->PINSEL1 |= 0x14000000;
Osator 0:339b7abfa147 373
Osator 0:339b7abfa147 374 // Disconnect USB device
Osator 0:339b7abfa147 375 SIEdisconnect();
Osator 0:339b7abfa147 376
Osator 0:339b7abfa147 377 // Configure pin P2.9 to be Connect
Osator 0:339b7abfa147 378 LPC_PINCON->PINSEL4 &= 0xfffcffff;
Osator 0:339b7abfa147 379 LPC_PINCON->PINSEL4 |= 0x00040000;
Osator 0:339b7abfa147 380
Osator 0:339b7abfa147 381 // Connect must be low for at least 2.5uS
Osator 0:339b7abfa147 382 wait(0.3);
Osator 0:339b7abfa147 383
Osator 0:339b7abfa147 384 // Set the maximum packet size for the control endpoints
Osator 0:339b7abfa147 385 realiseEndpoint(EP0IN, MAX_PACKET_SIZE_EP0, 0);
Osator 0:339b7abfa147 386 realiseEndpoint(EP0OUT, MAX_PACKET_SIZE_EP0, 0);
Osator 0:339b7abfa147 387
Osator 0:339b7abfa147 388 // Attach IRQ
Osator 0:339b7abfa147 389 instance = this;
Osator 0:339b7abfa147 390 NVIC_SetVector(USB_IRQn, (uint32_t)&_usbisr);
Osator 0:339b7abfa147 391
Osator 0:339b7abfa147 392 // Enable interrupts for device events and EP0
Osator 0:339b7abfa147 393 LPC_USB->USBDevIntEn = EP_SLOW | DEV_STAT | FRAME;
Osator 0:339b7abfa147 394 enableEndpointEvent(EP0IN);
Osator 0:339b7abfa147 395 enableEndpointEvent(EP0OUT);
Osator 0:339b7abfa147 396 }
Osator 0:339b7abfa147 397
Osator 0:339b7abfa147 398 USBHAL::~USBHAL(void) {
Osator 0:339b7abfa147 399 // Ensure device disconnected
Osator 0:339b7abfa147 400 SIEdisconnect();
Osator 0:339b7abfa147 401 // Disable USB interrupts
Osator 0:339b7abfa147 402 NVIC_DisableIRQ(USB_IRQn);
Osator 0:339b7abfa147 403 }
Osator 0:339b7abfa147 404
Osator 0:339b7abfa147 405 void USBHAL::connect(void) {
Osator 0:339b7abfa147 406 NVIC_EnableIRQ(USB_IRQn);
Osator 0:339b7abfa147 407 // Connect USB device
Osator 0:339b7abfa147 408 SIEconnect();
Osator 0:339b7abfa147 409 }
Osator 0:339b7abfa147 410
Osator 0:339b7abfa147 411 void USBHAL::disconnect(void) {
Osator 0:339b7abfa147 412 NVIC_DisableIRQ(USB_IRQn);
Osator 0:339b7abfa147 413 // Disconnect USB device
Osator 0:339b7abfa147 414 SIEdisconnect();
Osator 0:339b7abfa147 415 }
Osator 0:339b7abfa147 416
Osator 0:339b7abfa147 417 void USBHAL::configureDevice(void) {
Osator 0:339b7abfa147 418 SIEconfigureDevice();
Osator 0:339b7abfa147 419 }
Osator 0:339b7abfa147 420
Osator 0:339b7abfa147 421 void USBHAL::unconfigureDevice(void) {
Osator 0:339b7abfa147 422 SIEunconfigureDevice();
Osator 0:339b7abfa147 423 }
Osator 0:339b7abfa147 424
Osator 0:339b7abfa147 425 void USBHAL::setAddress(uint8_t address) {
Osator 0:339b7abfa147 426 SIEsetAddress(address);
Osator 0:339b7abfa147 427 }
Osator 0:339b7abfa147 428
Osator 0:339b7abfa147 429 void USBHAL::EP0setup(uint8_t *buffer) {
Osator 0:339b7abfa147 430 endpointReadcore(EP0OUT, buffer);
Osator 0:339b7abfa147 431 }
Osator 0:339b7abfa147 432
Osator 0:339b7abfa147 433 void USBHAL::EP0read(void) {
Osator 0:339b7abfa147 434 // Not required
Osator 0:339b7abfa147 435 }
Osator 0:339b7abfa147 436
Osator 0:339b7abfa147 437 void USBHAL::EP0readStage(void) {
Osator 0:339b7abfa147 438 // Not required
Osator 0:339b7abfa147 439 }
Osator 0:339b7abfa147 440
Osator 0:339b7abfa147 441 uint32_t USBHAL::EP0getReadResult(uint8_t *buffer) {
Osator 0:339b7abfa147 442 return endpointReadcore(EP0OUT, buffer);
Osator 0:339b7abfa147 443 }
Osator 0:339b7abfa147 444
Osator 0:339b7abfa147 445 void USBHAL::EP0write(uint8_t *buffer, uint32_t size) {
Osator 0:339b7abfa147 446 endpointWritecore(EP0IN, buffer, size);
Osator 0:339b7abfa147 447 }
Osator 0:339b7abfa147 448
Osator 0:339b7abfa147 449 void USBHAL::EP0getWriteResult(void) {
Osator 0:339b7abfa147 450 // Not required
Osator 0:339b7abfa147 451 }
Osator 0:339b7abfa147 452
Osator 0:339b7abfa147 453 void USBHAL::EP0stall(void) {
Osator 0:339b7abfa147 454 // This will stall both control endpoints
Osator 0:339b7abfa147 455 stallEndpoint(EP0OUT);
Osator 0:339b7abfa147 456 }
Osator 0:339b7abfa147 457
Osator 0:339b7abfa147 458 EP_STATUS USBHAL::endpointRead(uint8_t endpoint, uint32_t maximumSize) {
Osator 0:339b7abfa147 459 return EP_PENDING;
Osator 0:339b7abfa147 460 }
Osator 0:339b7abfa147 461
Osator 0:339b7abfa147 462 EP_STATUS USBHAL::endpointReadResult(uint8_t endpoint, uint8_t * buffer, uint32_t *bytesRead) {
Osator 0:339b7abfa147 463
Osator 0:339b7abfa147 464 //for isochronous endpoint, we don't wait an interrupt
Osator 0:339b7abfa147 465 if ((endpoint >> 1) % 3 || (endpoint >> 1) == 0) {
Osator 0:339b7abfa147 466 if (!(epComplete & EP(endpoint)))
Osator 0:339b7abfa147 467 return EP_PENDING;
Osator 0:339b7abfa147 468 }
Osator 0:339b7abfa147 469
Osator 0:339b7abfa147 470 *bytesRead = endpointReadcore(endpoint, buffer);
Osator 0:339b7abfa147 471 epComplete &= ~EP(endpoint);
Osator 0:339b7abfa147 472 return EP_COMPLETED;
Osator 0:339b7abfa147 473 }
Osator 0:339b7abfa147 474
Osator 0:339b7abfa147 475 EP_STATUS USBHAL::endpointWrite(uint8_t endpoint, uint8_t *data, uint32_t size) {
Osator 0:339b7abfa147 476 if (getEndpointStallState(endpoint)) {
Osator 0:339b7abfa147 477 return EP_STALLED;
Osator 0:339b7abfa147 478 }
Osator 0:339b7abfa147 479
Osator 0:339b7abfa147 480 epComplete &= ~EP(endpoint);
Osator 0:339b7abfa147 481
Osator 0:339b7abfa147 482 endpointWritecore(endpoint, data, size);
Osator 0:339b7abfa147 483 return EP_PENDING;
Osator 0:339b7abfa147 484 }
Osator 0:339b7abfa147 485
Osator 0:339b7abfa147 486 EP_STATUS USBHAL::endpointWriteResult(uint8_t endpoint) {
Osator 0:339b7abfa147 487 if (epComplete & EP(endpoint)) {
Osator 0:339b7abfa147 488 epComplete &= ~EP(endpoint);
Osator 0:339b7abfa147 489 return EP_COMPLETED;
Osator 0:339b7abfa147 490 }
Osator 0:339b7abfa147 491
Osator 0:339b7abfa147 492 return EP_PENDING;
Osator 0:339b7abfa147 493 }
Osator 0:339b7abfa147 494
Osator 0:339b7abfa147 495 bool USBHAL::realiseEndpoint(uint8_t endpoint, uint32_t maxPacket, uint32_t flags) {
Osator 0:339b7abfa147 496 // Realise an endpoint
Osator 0:339b7abfa147 497 LPC_USB->USBDevIntClr = EP_RLZED;
Osator 0:339b7abfa147 498 LPC_USB->USBReEp |= EP(endpoint);
Osator 0:339b7abfa147 499 LPC_USB->USBEpInd = endpoint;
Osator 0:339b7abfa147 500 LPC_USB->USBMaxPSize = maxPacket;
Osator 0:339b7abfa147 501
Osator 0:339b7abfa147 502 while (!(LPC_USB->USBDevIntSt & EP_RLZED));
Osator 0:339b7abfa147 503 LPC_USB->USBDevIntClr = EP_RLZED;
Osator 0:339b7abfa147 504
Osator 0:339b7abfa147 505 // Clear stall state
Osator 0:339b7abfa147 506 endpointStallState &= ~EP(endpoint);
Osator 0:339b7abfa147 507
Osator 0:339b7abfa147 508 enableEndpointEvent(endpoint);
Osator 0:339b7abfa147 509 return true;
Osator 0:339b7abfa147 510 }
Osator 0:339b7abfa147 511
Osator 0:339b7abfa147 512 void USBHAL::stallEndpoint(uint8_t endpoint) {
Osator 0:339b7abfa147 513 // Stall an endpoint
Osator 0:339b7abfa147 514 if ( (endpoint==EP0IN) || (endpoint==EP0OUT) ) {
Osator 0:339b7abfa147 515 // Conditionally stall both control endpoints
Osator 0:339b7abfa147 516 SIEsetEndpointStatus(EP0OUT, SIE_SES_CND_ST);
Osator 0:339b7abfa147 517 } else {
Osator 0:339b7abfa147 518 SIEsetEndpointStatus(endpoint, SIE_SES_ST);
Osator 0:339b7abfa147 519
Osator 0:339b7abfa147 520 // Update stall state
Osator 0:339b7abfa147 521 endpointStallState |= EP(endpoint);
Osator 0:339b7abfa147 522 }
Osator 0:339b7abfa147 523 }
Osator 0:339b7abfa147 524
Osator 0:339b7abfa147 525 void USBHAL::unstallEndpoint(uint8_t endpoint) {
Osator 0:339b7abfa147 526 // Unstall an endpoint. The endpoint will also be reinitialised
Osator 0:339b7abfa147 527 SIEsetEndpointStatus(endpoint, 0);
Osator 0:339b7abfa147 528
Osator 0:339b7abfa147 529 // Update stall state
Osator 0:339b7abfa147 530 endpointStallState &= ~EP(endpoint);
Osator 0:339b7abfa147 531 }
Osator 0:339b7abfa147 532
Osator 0:339b7abfa147 533 bool USBHAL::getEndpointStallState(uint8_t endpoint) {
Osator 0:339b7abfa147 534 // Returns true if endpoint stalled
Osator 0:339b7abfa147 535 return endpointStallState & EP(endpoint);
Osator 0:339b7abfa147 536 }
Osator 0:339b7abfa147 537
Osator 0:339b7abfa147 538 void USBHAL::remoteWakeup(void) {
Osator 0:339b7abfa147 539 // Remote wakeup
Osator 0:339b7abfa147 540 uint8_t status;
Osator 0:339b7abfa147 541
Osator 0:339b7abfa147 542 // Enable USB clocks
Osator 0:339b7abfa147 543 LPC_USB->USBClkCtrl |= DEV_CLK_EN | AHB_CLK_EN;
Osator 0:339b7abfa147 544 while (LPC_USB->USBClkSt != (DEV_CLK_ON | AHB_CLK_ON));
Osator 0:339b7abfa147 545
Osator 0:339b7abfa147 546 status = SIEgetDeviceStatus();
Osator 0:339b7abfa147 547 SIEsetDeviceStatus(status & ~SIE_DS_SUS);
Osator 0:339b7abfa147 548 }
Osator 0:339b7abfa147 549
Osator 0:339b7abfa147 550 void USBHAL::_usbisr(void) {
Osator 0:339b7abfa147 551 instance->usbisr();
Osator 0:339b7abfa147 552 }
Osator 0:339b7abfa147 553
Osator 0:339b7abfa147 554
Osator 0:339b7abfa147 555 void USBHAL::usbisr(void) {
Osator 0:339b7abfa147 556 uint8_t devStat;
Osator 0:339b7abfa147 557
Osator 0:339b7abfa147 558 if (LPC_USB->USBDevIntSt & FRAME) {
Osator 0:339b7abfa147 559 // Start of frame event
Osator 0:339b7abfa147 560 SOF(SIEgetFrameNumber());
Osator 0:339b7abfa147 561 // Clear interrupt status flag
Osator 0:339b7abfa147 562 LPC_USB->USBDevIntClr = FRAME;
Osator 0:339b7abfa147 563 }
Osator 0:339b7abfa147 564
Osator 0:339b7abfa147 565 if (LPC_USB->USBDevIntSt & DEV_STAT) {
Osator 0:339b7abfa147 566 // Device Status interrupt
Osator 0:339b7abfa147 567 // Must clear the interrupt status flag before reading the device status from the SIE
Osator 0:339b7abfa147 568 LPC_USB->USBDevIntClr = DEV_STAT;
Osator 0:339b7abfa147 569
Osator 0:339b7abfa147 570 // Read device status from SIE
Osator 0:339b7abfa147 571 devStat = SIEgetDeviceStatus();
Osator 0:339b7abfa147 572 //printf("devStat: %d\r\n", devStat);
Osator 0:339b7abfa147 573
Osator 0:339b7abfa147 574 if (devStat & SIE_DS_SUS_CH) {
Osator 0:339b7abfa147 575 // Suspend status changed
Osator 0:339b7abfa147 576 if((devStat & SIE_DS_SUS) != 0) {
Osator 0:339b7abfa147 577 suspendStateChanged(0);
Osator 0:339b7abfa147 578 }
Osator 0:339b7abfa147 579 }
Osator 0:339b7abfa147 580
Osator 0:339b7abfa147 581 if (devStat & SIE_DS_RST) {
Osator 0:339b7abfa147 582 // Bus reset
Osator 0:339b7abfa147 583 if((devStat & SIE_DS_SUS) == 0) {
Osator 0:339b7abfa147 584 suspendStateChanged(1);
Osator 0:339b7abfa147 585 }
Osator 0:339b7abfa147 586 busReset();
Osator 0:339b7abfa147 587 }
Osator 0:339b7abfa147 588 }
Osator 0:339b7abfa147 589
Osator 0:339b7abfa147 590 if (LPC_USB->USBDevIntSt & EP_SLOW) {
Osator 0:339b7abfa147 591 // (Slow) Endpoint Interrupt
Osator 0:339b7abfa147 592
Osator 0:339b7abfa147 593 // Process each endpoint interrupt
Osator 0:339b7abfa147 594 if (LPC_USB->USBEpIntSt & EP(EP0OUT)) {
Osator 0:339b7abfa147 595 if (selectEndpointClearInterrupt(EP0OUT) & SIE_SE_STP) {
Osator 0:339b7abfa147 596 // this is a setup packet
Osator 0:339b7abfa147 597 EP0setupCallback();
Osator 0:339b7abfa147 598 } else {
Osator 0:339b7abfa147 599 EP0out();
Osator 0:339b7abfa147 600 }
Osator 0:339b7abfa147 601 LPC_USB->USBDevIntClr = EP_SLOW;
Osator 0:339b7abfa147 602 }
Osator 0:339b7abfa147 603
Osator 0:339b7abfa147 604 if (LPC_USB->USBEpIntSt & EP(EP0IN)) {
Osator 0:339b7abfa147 605 selectEndpointClearInterrupt(EP0IN);
Osator 0:339b7abfa147 606 LPC_USB->USBDevIntClr = EP_SLOW;
Osator 0:339b7abfa147 607 EP0in();
Osator 0:339b7abfa147 608 }
Osator 0:339b7abfa147 609
Osator 0:339b7abfa147 610 for (uint8_t num = 2; num < 16*2; num++) {
Osator 0:339b7abfa147 611 if (LPC_USB->USBEpIntSt & EP(num)) {
Osator 0:339b7abfa147 612 selectEndpointClearInterrupt(num);
Osator 0:339b7abfa147 613 epComplete |= EP(num);
Osator 0:339b7abfa147 614 LPC_USB->USBDevIntClr = EP_SLOW;
Osator 0:339b7abfa147 615 if ((instance->*(epCallback[num - 2]))()) {
Osator 0:339b7abfa147 616 epComplete &= ~EP(num);
Osator 0:339b7abfa147 617 }
Osator 0:339b7abfa147 618 }
Osator 0:339b7abfa147 619 }
Osator 0:339b7abfa147 620 }
Osator 0:339b7abfa147 621 }
Osator 0:339b7abfa147 622
Osator 0:339b7abfa147 623 #endif