Point Labs / USBDevice

adds a USB serial port to your design

Dependents:   Example_WatchDog_Timer

targets/TARGET_NXP/USBHAL_LPC17.cpp@82:584b0afbd742, 2019-02-26 (annotated)

Committer:
rlanders73
Date:
Tue Feb 26 20:56:58 2019 +0000
Revision:
82:584b0afbd742
Parent:
71:53949e6131f6 
removed unsupported USB descriptors for geneva

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Kojto 71:53949e6131f6 1 /* Copyright (c) 2010-2011 mbed.org, MIT License
Kojto 71:53949e6131f6 2 *
Kojto 71:53949e6131f6 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
Kojto 71:53949e6131f6 4 * and associated documentation files (the "Software"), to deal in the Software without
Kojto 71:53949e6131f6 5 * restriction, including without limitation the rights to use, copy, modify, merge, publish,
Kojto 71:53949e6131f6 6 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
Kojto 71:53949e6131f6 7 * Software is furnished to do so, subject to the following conditions:
Kojto 71:53949e6131f6 8 *
Kojto 71:53949e6131f6 9 * The above copyright notice and this permission notice shall be included in all copies or
Kojto 71:53949e6131f6 10 * substantial portions of the Software.
Kojto 71:53949e6131f6 11 *
Kojto 71:53949e6131f6 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
Kojto 71:53949e6131f6 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
Kojto 71:53949e6131f6 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
Kojto 71:53949e6131f6 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
Kojto 71:53949e6131f6 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Kojto 71:53949e6131f6 17 */
Kojto 71:53949e6131f6 18
Kojto 71:53949e6131f6 19 #if defined(TARGET_LPC1768) || defined(TARGET_LPC2368) || defined(TARGET_LPC2460)
Kojto 71:53949e6131f6 20
Kojto 71:53949e6131f6 21 #include "USBHAL.h"
Kojto 71:53949e6131f6 22
Kojto 71:53949e6131f6 23
Kojto 71:53949e6131f6 24 // Get endpoint direction
Kojto 71:53949e6131f6 25 #define IN_EP(endpoint) ((endpoint) & 1U ? true : false)
Kojto 71:53949e6131f6 26 #define OUT_EP(endpoint) ((endpoint) & 1U ? false : true)
Kojto 71:53949e6131f6 27
Kojto 71:53949e6131f6 28 // Convert physical endpoint number to register bit
Kojto 71:53949e6131f6 29 #define EP(endpoint) (1UL<<endpoint)
Kojto 71:53949e6131f6 30
Kojto 71:53949e6131f6 31 // Power Control for Peripherals register
Kojto 71:53949e6131f6 32 #define PCUSB (1UL<<31)
Kojto 71:53949e6131f6 33
Kojto 71:53949e6131f6 34 // USB Clock Control register
Kojto 71:53949e6131f6 35 #define DEV_CLK_EN (1UL<<1)
Kojto 71:53949e6131f6 36 #define AHB_CLK_EN (1UL<<4)
Kojto 71:53949e6131f6 37
Kojto 71:53949e6131f6 38 // USB Clock Status register
Kojto 71:53949e6131f6 39 #define DEV_CLK_ON (1UL<<1)
Kojto 71:53949e6131f6 40 #define AHB_CLK_ON (1UL<<4)
Kojto 71:53949e6131f6 41
Kojto 71:53949e6131f6 42 // USB Device Interupt registers
Kojto 71:53949e6131f6 43 #define FRAME (1UL<<0)
Kojto 71:53949e6131f6 44 #define EP_FAST (1UL<<1)
Kojto 71:53949e6131f6 45 #define EP_SLOW (1UL<<2)
Kojto 71:53949e6131f6 46 #define DEV_STAT (1UL<<3)
Kojto 71:53949e6131f6 47 #define CCEMPTY (1UL<<4)
Kojto 71:53949e6131f6 48 #define CDFULL (1UL<<5)
Kojto 71:53949e6131f6 49 #define RxENDPKT (1UL<<6)
Kojto 71:53949e6131f6 50 #define TxENDPKT (1UL<<7)
Kojto 71:53949e6131f6 51 #define EP_RLZED (1UL<<8)
Kojto 71:53949e6131f6 52 #define ERR_INT (1UL<<9)
Kojto 71:53949e6131f6 53
Kojto 71:53949e6131f6 54 // USB Control register
Kojto 71:53949e6131f6 55 #define RD_EN (1<<0)
Kojto 71:53949e6131f6 56 #define WR_EN (1<<1)
Kojto 71:53949e6131f6 57 #define LOG_ENDPOINT(endpoint) ((endpoint>>1)<<2)
Kojto 71:53949e6131f6 58
Kojto 71:53949e6131f6 59 // USB Receive Packet Length register
Kojto 71:53949e6131f6 60 #define DV (1UL<<10)
Kojto 71:53949e6131f6 61 #define PKT_RDY (1UL<<11)
Kojto 71:53949e6131f6 62 #define PKT_LNGTH_MASK (0x3ff)
Kojto 71:53949e6131f6 63
Kojto 71:53949e6131f6 64 // Serial Interface Engine (SIE)
Kojto 71:53949e6131f6 65 #define SIE_WRITE (0x01)
Kojto 71:53949e6131f6 66 #define SIE_READ (0x02)
Kojto 71:53949e6131f6 67 #define SIE_COMMAND (0x05)
Kojto 71:53949e6131f6 68 #define SIE_CMD_CODE(phase, data) ((phase<<8)|(data<<16))
Kojto 71:53949e6131f6 69
Kojto 71:53949e6131f6 70 // SIE Command codes
Kojto 71:53949e6131f6 71 #define SIE_CMD_SET_ADDRESS (0xD0)
Kojto 71:53949e6131f6 72 #define SIE_CMD_CONFIGURE_DEVICE (0xD8)
Kojto 71:53949e6131f6 73 #define SIE_CMD_SET_MODE (0xF3)
Kojto 71:53949e6131f6 74 #define SIE_CMD_READ_FRAME_NUMBER (0xF5)
Kojto 71:53949e6131f6 75 #define SIE_CMD_READ_TEST_REGISTER (0xFD)
Kojto 71:53949e6131f6 76 #define SIE_CMD_SET_DEVICE_STATUS (0xFE)
Kojto 71:53949e6131f6 77 #define SIE_CMD_GET_DEVICE_STATUS (0xFE)
Kojto 71:53949e6131f6 78 #define SIE_CMD_GET_ERROR_CODE (0xFF)
Kojto 71:53949e6131f6 79 #define SIE_CMD_READ_ERROR_STATUS (0xFB)
Kojto 71:53949e6131f6 80
Kojto 71:53949e6131f6 81 #define SIE_CMD_SELECT_ENDPOINT(endpoint) (0x00+endpoint)
Kojto 71:53949e6131f6 82 #define SIE_CMD_SELECT_ENDPOINT_CLEAR_INTERRUPT(endpoint) (0x40+endpoint)
Kojto 71:53949e6131f6 83 #define SIE_CMD_SET_ENDPOINT_STATUS(endpoint) (0x40+endpoint)
Kojto 71:53949e6131f6 84
Kojto 71:53949e6131f6 85 #define SIE_CMD_CLEAR_BUFFER (0xF2)
Kojto 71:53949e6131f6 86 #define SIE_CMD_VALIDATE_BUFFER (0xFA)
Kojto 71:53949e6131f6 87
Kojto 71:53949e6131f6 88 // SIE Device Status register
Kojto 71:53949e6131f6 89 #define SIE_DS_CON (1<<0)
Kojto 71:53949e6131f6 90 #define SIE_DS_CON_CH (1<<1)
Kojto 71:53949e6131f6 91 #define SIE_DS_SUS (1<<2)
Kojto 71:53949e6131f6 92 #define SIE_DS_SUS_CH (1<<3)
Kojto 71:53949e6131f6 93 #define SIE_DS_RST (1<<4)
Kojto 71:53949e6131f6 94
Kojto 71:53949e6131f6 95 // SIE Device Set Address register
Kojto 71:53949e6131f6 96 #define SIE_DSA_DEV_EN (1<<7)
Kojto 71:53949e6131f6 97
Kojto 71:53949e6131f6 98 // SIE Configue Device register
Kojto 71:53949e6131f6 99 #define SIE_CONF_DEVICE (1<<0)
Kojto 71:53949e6131f6 100
Kojto 71:53949e6131f6 101 // Select Endpoint register
Kojto 71:53949e6131f6 102 #define SIE_SE_FE (1<<0)
Kojto 71:53949e6131f6 103 #define SIE_SE_ST (1<<1)
Kojto 71:53949e6131f6 104 #define SIE_SE_STP (1<<2)
Kojto 71:53949e6131f6 105 #define SIE_SE_PO (1<<3)
Kojto 71:53949e6131f6 106 #define SIE_SE_EPN (1<<4)
Kojto 71:53949e6131f6 107 #define SIE_SE_B_1_FULL (1<<5)
Kojto 71:53949e6131f6 108 #define SIE_SE_B_2_FULL (1<<6)
Kojto 71:53949e6131f6 109
Kojto 71:53949e6131f6 110 // Set Endpoint Status command
Kojto 71:53949e6131f6 111 #define SIE_SES_ST (1<<0)
Kojto 71:53949e6131f6 112 #define SIE_SES_DA (1<<5)
Kojto 71:53949e6131f6 113 #define SIE_SES_RF_MO (1<<6)
Kojto 71:53949e6131f6 114 #define SIE_SES_CND_ST (1<<7)
Kojto 71:53949e6131f6 115
Kojto 71:53949e6131f6 116
Kojto 71:53949e6131f6 117 USBHAL * USBHAL::instance;
Kojto 71:53949e6131f6 118
Kojto 71:53949e6131f6 119 static volatile int epComplete;
Kojto 71:53949e6131f6 120 static uint32_t endpointStallState;
Kojto 71:53949e6131f6 121
Kojto 71:53949e6131f6 122 static void SIECommand(uint32_t command) {
Kojto 71:53949e6131f6 123 // The command phase of a SIE transaction
Kojto 71:53949e6131f6 124 LPC_USB->USBDevIntClr = CCEMPTY;
Kojto 71:53949e6131f6 125 LPC_USB->USBCmdCode = SIE_CMD_CODE(SIE_COMMAND, command);
Kojto 71:53949e6131f6 126 while (!(LPC_USB->USBDevIntSt & CCEMPTY));
Kojto 71:53949e6131f6 127 }
Kojto 71:53949e6131f6 128
Kojto 71:53949e6131f6 129 static void SIEWriteData(uint8_t data) {
Kojto 71:53949e6131f6 130 // The data write phase of a SIE transaction
Kojto 71:53949e6131f6 131 LPC_USB->USBDevIntClr = CCEMPTY;
Kojto 71:53949e6131f6 132 LPC_USB->USBCmdCode = SIE_CMD_CODE(SIE_WRITE, data);
Kojto 71:53949e6131f6 133 while (!(LPC_USB->USBDevIntSt & CCEMPTY));
Kojto 71:53949e6131f6 134 }
Kojto 71:53949e6131f6 135
Kojto 71:53949e6131f6 136 static uint8_t SIEReadData(uint32_t command) {
Kojto 71:53949e6131f6 137 // The data read phase of a SIE transaction
Kojto 71:53949e6131f6 138 LPC_USB->USBDevIntClr = CDFULL;
Kojto 71:53949e6131f6 139 LPC_USB->USBCmdCode = SIE_CMD_CODE(SIE_READ, command);
Kojto 71:53949e6131f6 140 while (!(LPC_USB->USBDevIntSt & CDFULL));
Kojto 71:53949e6131f6 141 return (uint8_t)LPC_USB->USBCmdData;
Kojto 71:53949e6131f6 142 }
Kojto 71:53949e6131f6 143
Kojto 71:53949e6131f6 144 static void SIEsetDeviceStatus(uint8_t status) {
Kojto 71:53949e6131f6 145 // Write SIE device status register
Kojto 71:53949e6131f6 146 SIECommand(SIE_CMD_SET_DEVICE_STATUS);
Kojto 71:53949e6131f6 147 SIEWriteData(status);
Kojto 71:53949e6131f6 148 }
Kojto 71:53949e6131f6 149
Kojto 71:53949e6131f6 150 static uint8_t SIEgetDeviceStatus(void) {
Kojto 71:53949e6131f6 151 // Read SIE device status register
Kojto 71:53949e6131f6 152 SIECommand(SIE_CMD_GET_DEVICE_STATUS);
Kojto 71:53949e6131f6 153 return SIEReadData(SIE_CMD_GET_DEVICE_STATUS);
Kojto 71:53949e6131f6 154 }
Kojto 71:53949e6131f6 155
Kojto 71:53949e6131f6 156 void SIEsetAddress(uint8_t address) {
Kojto 71:53949e6131f6 157 // Write SIE device address register
Kojto 71:53949e6131f6 158 SIECommand(SIE_CMD_SET_ADDRESS);
Kojto 71:53949e6131f6 159 SIEWriteData((address & 0x7f) | SIE_DSA_DEV_EN);
Kojto 71:53949e6131f6 160 }
Kojto 71:53949e6131f6 161
Kojto 71:53949e6131f6 162 static uint8_t SIEselectEndpoint(uint8_t endpoint) {
Kojto 71:53949e6131f6 163 // SIE select endpoint command
Kojto 71:53949e6131f6 164 SIECommand(SIE_CMD_SELECT_ENDPOINT(endpoint));
Kojto 71:53949e6131f6 165 return SIEReadData(SIE_CMD_SELECT_ENDPOINT(endpoint));
Kojto 71:53949e6131f6 166 }
Kojto 71:53949e6131f6 167
Kojto 71:53949e6131f6 168 static uint8_t SIEclearBuffer(void) {
Kojto 71:53949e6131f6 169 // SIE clear buffer command
Kojto 71:53949e6131f6 170 SIECommand(SIE_CMD_CLEAR_BUFFER);
Kojto 71:53949e6131f6 171 return SIEReadData(SIE_CMD_CLEAR_BUFFER);
Kojto 71:53949e6131f6 172 }
Kojto 71:53949e6131f6 173
Kojto 71:53949e6131f6 174 static void SIEvalidateBuffer(void) {
Kojto 71:53949e6131f6 175 // SIE validate buffer command
Kojto 71:53949e6131f6 176 SIECommand(SIE_CMD_VALIDATE_BUFFER);
Kojto 71:53949e6131f6 177 }
Kojto 71:53949e6131f6 178
Kojto 71:53949e6131f6 179 static void SIEsetEndpointStatus(uint8_t endpoint, uint8_t status) {
Kojto 71:53949e6131f6 180 // SIE set endpoint status command
Kojto 71:53949e6131f6 181 SIECommand(SIE_CMD_SET_ENDPOINT_STATUS(endpoint));
Kojto 71:53949e6131f6 182 SIEWriteData(status);
Kojto 71:53949e6131f6 183 }
Kojto 71:53949e6131f6 184
Kojto 71:53949e6131f6 185 static uint16_t SIEgetFrameNumber(void) __attribute__ ((unused));
Kojto 71:53949e6131f6 186 static uint16_t SIEgetFrameNumber(void) {
Kojto 71:53949e6131f6 187 // Read current frame number
Kojto 71:53949e6131f6 188 uint16_t lowByte;
Kojto 71:53949e6131f6 189 uint16_t highByte;
Kojto 71:53949e6131f6 190
Kojto 71:53949e6131f6 191 SIECommand(SIE_CMD_READ_FRAME_NUMBER);
Kojto 71:53949e6131f6 192 lowByte = SIEReadData(SIE_CMD_READ_FRAME_NUMBER);
Kojto 71:53949e6131f6 193 highByte = SIEReadData(SIE_CMD_READ_FRAME_NUMBER);
Kojto 71:53949e6131f6 194
Kojto 71:53949e6131f6 195 return (highByte << 8) | lowByte;
Kojto 71:53949e6131f6 196 }
Kojto 71:53949e6131f6 197
Kojto 71:53949e6131f6 198 static void SIEconfigureDevice(void) {
Kojto 71:53949e6131f6 199 // SIE Configure device command
Kojto 71:53949e6131f6 200 SIECommand(SIE_CMD_CONFIGURE_DEVICE);
Kojto 71:53949e6131f6 201 SIEWriteData(SIE_CONF_DEVICE);
Kojto 71:53949e6131f6 202 }
Kojto 71:53949e6131f6 203
Kojto 71:53949e6131f6 204 static void SIEunconfigureDevice(void) {
Kojto 71:53949e6131f6 205 // SIE Configure device command
Kojto 71:53949e6131f6 206 SIECommand(SIE_CMD_CONFIGURE_DEVICE);
Kojto 71:53949e6131f6 207 SIEWriteData(0);
Kojto 71:53949e6131f6 208 }
Kojto 71:53949e6131f6 209
Kojto 71:53949e6131f6 210 static void SIEconnect(void) {
Kojto 71:53949e6131f6 211 // Connect USB device
Kojto 71:53949e6131f6 212 uint8_t status = SIEgetDeviceStatus();
Kojto 71:53949e6131f6 213 SIEsetDeviceStatus(status | SIE_DS_CON);
Kojto 71:53949e6131f6 214 }
Kojto 71:53949e6131f6 215
Kojto 71:53949e6131f6 216
Kojto 71:53949e6131f6 217 static void SIEdisconnect(void) {
Kojto 71:53949e6131f6 218 // Disconnect USB device
Kojto 71:53949e6131f6 219 uint8_t status = SIEgetDeviceStatus();
Kojto 71:53949e6131f6 220 SIEsetDeviceStatus(status & ~SIE_DS_CON);
Kojto 71:53949e6131f6 221 }
Kojto 71:53949e6131f6 222
Kojto 71:53949e6131f6 223
Kojto 71:53949e6131f6 224 static uint8_t selectEndpointClearInterrupt(uint8_t endpoint) {
Kojto 71:53949e6131f6 225 // Implemented using using EP_INT_CLR.
Kojto 71:53949e6131f6 226 LPC_USB->USBEpIntClr = EP(endpoint);
Kojto 71:53949e6131f6 227 while (!(LPC_USB->USBDevIntSt & CDFULL));
Kojto 71:53949e6131f6 228 return (uint8_t)LPC_USB->USBCmdData;
Kojto 71:53949e6131f6 229 }
Kojto 71:53949e6131f6 230
Kojto 71:53949e6131f6 231
Kojto 71:53949e6131f6 232 static void enableEndpointEvent(uint8_t endpoint) {
Kojto 71:53949e6131f6 233 // Enable an endpoint interrupt
Kojto 71:53949e6131f6 234 LPC_USB->USBEpIntEn |= EP(endpoint);
Kojto 71:53949e6131f6 235 }
Kojto 71:53949e6131f6 236
Kojto 71:53949e6131f6 237 static void disableEndpointEvent(uint8_t endpoint) __attribute__ ((unused));
Kojto 71:53949e6131f6 238 static void disableEndpointEvent(uint8_t endpoint) {
Kojto 71:53949e6131f6 239 // Disable an endpoint interrupt
Kojto 71:53949e6131f6 240 LPC_USB->USBEpIntEn &= ~EP(endpoint);
Kojto 71:53949e6131f6 241 }
Kojto 71:53949e6131f6 242
Kojto 71:53949e6131f6 243 static volatile uint32_t __attribute__((used)) dummyRead;
Kojto 71:53949e6131f6 244 uint32_t USBHAL::endpointReadcore(uint8_t endpoint, uint8_t *buffer) {
Kojto 71:53949e6131f6 245 // Read from an OUT endpoint
Kojto 71:53949e6131f6 246 uint32_t size;
Kojto 71:53949e6131f6 247 uint32_t i;
Kojto 71:53949e6131f6 248 uint32_t data = 0;
Kojto 71:53949e6131f6 249 uint8_t offset;
Kojto 71:53949e6131f6 250
Kojto 71:53949e6131f6 251 LPC_USB->USBCtrl = LOG_ENDPOINT(endpoint) | RD_EN;
Kojto 71:53949e6131f6 252 while (!(LPC_USB->USBRxPLen & PKT_RDY));
Kojto 71:53949e6131f6 253
Kojto 71:53949e6131f6 254 size = LPC_USB->USBRxPLen & PKT_LNGTH_MASK;
Kojto 71:53949e6131f6 255
Kojto 71:53949e6131f6 256 offset = 0;
Kojto 71:53949e6131f6 257
Kojto 71:53949e6131f6 258 if (size > 0) {
Kojto 71:53949e6131f6 259 for (i=0; i<size; i++) {
Kojto 71:53949e6131f6 260 if (offset==0) {
Kojto 71:53949e6131f6 261 // Fetch up to four bytes of data as a word
Kojto 71:53949e6131f6 262 data = LPC_USB->USBRxData;
Kojto 71:53949e6131f6 263 }
Kojto 71:53949e6131f6 264
Kojto 71:53949e6131f6 265 // extract a byte
Kojto 71:53949e6131f6 266 *buffer = (data>>offset) & 0xff;
Kojto 71:53949e6131f6 267 buffer++;
Kojto 71:53949e6131f6 268
Kojto 71:53949e6131f6 269 // move on to the next byte
Kojto 71:53949e6131f6 270 offset = (offset + 8) % 32;
Kojto 71:53949e6131f6 271 }
Kojto 71:53949e6131f6 272 } else {
Kojto 71:53949e6131f6 273 dummyRead = LPC_USB->USBRxData;
Kojto 71:53949e6131f6 274 }
Kojto 71:53949e6131f6 275
Kojto 71:53949e6131f6 276 LPC_USB->USBCtrl = 0;
Kojto 71:53949e6131f6 277
Kojto 71:53949e6131f6 278 if ((endpoint >> 1) % 3 || (endpoint >> 1) == 0) {
Kojto 71:53949e6131f6 279 SIEselectEndpoint(endpoint);
Kojto 71:53949e6131f6 280 SIEclearBuffer();
Kojto 71:53949e6131f6 281 }
Kojto 71:53949e6131f6 282
Kojto 71:53949e6131f6 283 return size;
Kojto 71:53949e6131f6 284 }
Kojto 71:53949e6131f6 285
Kojto 71:53949e6131f6 286 static void endpointWritecore(uint8_t endpoint, uint8_t *buffer, uint32_t size) {
Kojto 71:53949e6131f6 287 // Write to an IN endpoint
Kojto 71:53949e6131f6 288 uint32_t temp, data;
Kojto 71:53949e6131f6 289 uint8_t offset;
Kojto 71:53949e6131f6 290
Kojto 71:53949e6131f6 291 LPC_USB->USBCtrl = LOG_ENDPOINT(endpoint) | WR_EN;
Kojto 71:53949e6131f6 292
Kojto 71:53949e6131f6 293 LPC_USB->USBTxPLen = size;
Kojto 71:53949e6131f6 294 offset = 0;
Kojto 71:53949e6131f6 295 data = 0;
Kojto 71:53949e6131f6 296
Kojto 71:53949e6131f6 297 if (size>0) {
Kojto 71:53949e6131f6 298 do {
Kojto 71:53949e6131f6 299 // Fetch next data byte into a word-sized temporary variable
Kojto 71:53949e6131f6 300 temp = *buffer++;
Kojto 71:53949e6131f6 301
Kojto 71:53949e6131f6 302 // Add to current data word
Kojto 71:53949e6131f6 303 temp = temp << offset;
Kojto 71:53949e6131f6 304 data = data | temp;
Kojto 71:53949e6131f6 305
Kojto 71:53949e6131f6 306 // move on to the next byte
Kojto 71:53949e6131f6 307 offset = (offset + 8) % 32;
Kojto 71:53949e6131f6 308 size--;
Kojto 71:53949e6131f6 309
Kojto 71:53949e6131f6 310 if ((offset==0) || (size==0)) {
Kojto 71:53949e6131f6 311 // Write the word to the endpoint
Kojto 71:53949e6131f6 312 LPC_USB->USBTxData = data;
Kojto 71:53949e6131f6 313 data = 0;
Kojto 71:53949e6131f6 314 }
Kojto 71:53949e6131f6 315 } while (size>0);
Kojto 71:53949e6131f6 316 } else {
Kojto 71:53949e6131f6 317 LPC_USB->USBTxData = 0;
Kojto 71:53949e6131f6 318 }
Kojto 71:53949e6131f6 319
Kojto 71:53949e6131f6 320 // Clear WR_EN to cover zero length packet case
Kojto 71:53949e6131f6 321 LPC_USB->USBCtrl=0;
Kojto 71:53949e6131f6 322
Kojto 71:53949e6131f6 323 SIEselectEndpoint(endpoint);
Kojto 71:53949e6131f6 324 SIEvalidateBuffer();
Kojto 71:53949e6131f6 325 }
Kojto 71:53949e6131f6 326
Kojto 71:53949e6131f6 327 USBHAL::USBHAL(void) {
Kojto 71:53949e6131f6 328 // Disable IRQ
Kojto 71:53949e6131f6 329 NVIC_DisableIRQ(USB_IRQn);
Kojto 71:53949e6131f6 330
Kojto 71:53949e6131f6 331 // fill in callback array
Kojto 71:53949e6131f6 332 epCallback[0] = &USBHAL::EP1_OUT_callback;
Kojto 71:53949e6131f6 333 epCallback[1] = &USBHAL::EP1_IN_callback;
Kojto 71:53949e6131f6 334 epCallback[2] = &USBHAL::EP2_OUT_callback;
Kojto 71:53949e6131f6 335 epCallback[3] = &USBHAL::EP2_IN_callback;
Kojto 71:53949e6131f6 336 epCallback[4] = &USBHAL::EP3_OUT_callback;
Kojto 71:53949e6131f6 337 epCallback[5] = &USBHAL::EP3_IN_callback;
Kojto 71:53949e6131f6 338 epCallback[6] = &USBHAL::EP4_OUT_callback;
Kojto 71:53949e6131f6 339 epCallback[7] = &USBHAL::EP4_IN_callback;
Kojto 71:53949e6131f6 340 epCallback[8] = &USBHAL::EP5_OUT_callback;
Kojto 71:53949e6131f6 341 epCallback[9] = &USBHAL::EP5_IN_callback;
Kojto 71:53949e6131f6 342 epCallback[10] = &USBHAL::EP6_OUT_callback;
Kojto 71:53949e6131f6 343 epCallback[11] = &USBHAL::EP6_IN_callback;
Kojto 71:53949e6131f6 344 epCallback[12] = &USBHAL::EP7_OUT_callback;
Kojto 71:53949e6131f6 345 epCallback[13] = &USBHAL::EP7_IN_callback;
Kojto 71:53949e6131f6 346 epCallback[14] = &USBHAL::EP8_OUT_callback;
Kojto 71:53949e6131f6 347 epCallback[15] = &USBHAL::EP8_IN_callback;
Kojto 71:53949e6131f6 348 epCallback[16] = &USBHAL::EP9_OUT_callback;
Kojto 71:53949e6131f6 349 epCallback[17] = &USBHAL::EP9_IN_callback;
Kojto 71:53949e6131f6 350 epCallback[18] = &USBHAL::EP10_OUT_callback;
Kojto 71:53949e6131f6 351 epCallback[19] = &USBHAL::EP10_IN_callback;
Kojto 71:53949e6131f6 352 epCallback[20] = &USBHAL::EP11_OUT_callback;
Kojto 71:53949e6131f6 353 epCallback[21] = &USBHAL::EP11_IN_callback;
Kojto 71:53949e6131f6 354 epCallback[22] = &USBHAL::EP12_OUT_callback;
Kojto 71:53949e6131f6 355 epCallback[23] = &USBHAL::EP12_IN_callback;
Kojto 71:53949e6131f6 356 epCallback[24] = &USBHAL::EP13_OUT_callback;
Kojto 71:53949e6131f6 357 epCallback[25] = &USBHAL::EP13_IN_callback;
Kojto 71:53949e6131f6 358 epCallback[26] = &USBHAL::EP14_OUT_callback;
Kojto 71:53949e6131f6 359 epCallback[27] = &USBHAL::EP14_IN_callback;
Kojto 71:53949e6131f6 360 epCallback[28] = &USBHAL::EP15_OUT_callback;
Kojto 71:53949e6131f6 361 epCallback[29] = &USBHAL::EP15_IN_callback;
Kojto 71:53949e6131f6 362
Kojto 71:53949e6131f6 363 // Enable power to USB device controller
Kojto 71:53949e6131f6 364 LPC_SC->PCONP |= PCUSB;
Kojto 71:53949e6131f6 365
Kojto 71:53949e6131f6 366 // Enable USB clocks
Kojto 71:53949e6131f6 367 LPC_USB->USBClkCtrl |= DEV_CLK_EN | AHB_CLK_EN;
Kojto 71:53949e6131f6 368 while (LPC_USB->USBClkSt != (DEV_CLK_ON | AHB_CLK_ON));
Kojto 71:53949e6131f6 369
Kojto 71:53949e6131f6 370 // Configure pins P0.29 and P0.30 to be USB D+ and USB D-
Kojto 71:53949e6131f6 371 LPC_PINCON->PINSEL1 &= 0xc3ffffff;
Kojto 71:53949e6131f6 372 LPC_PINCON->PINSEL1 |= 0x14000000;
Kojto 71:53949e6131f6 373
Kojto 71:53949e6131f6 374 // Disconnect USB device
Kojto 71:53949e6131f6 375 SIEdisconnect();
Kojto 71:53949e6131f6 376
Kojto 71:53949e6131f6 377 // Configure pin P2.9 to be Connect
Kojto 71:53949e6131f6 378 LPC_PINCON->PINSEL4 &= 0xfffcffff;
Kojto 71:53949e6131f6 379 LPC_PINCON->PINSEL4 |= 0x00040000;
Kojto 71:53949e6131f6 380
Kojto 71:53949e6131f6 381 // Connect must be low for at least 2.5uS
Kojto 71:53949e6131f6 382 wait(0.3);
Kojto 71:53949e6131f6 383
Kojto 71:53949e6131f6 384 // Set the maximum packet size for the control endpoints
Kojto 71:53949e6131f6 385 realiseEndpoint(EP0IN, MAX_PACKET_SIZE_EP0, 0);
Kojto 71:53949e6131f6 386 realiseEndpoint(EP0OUT, MAX_PACKET_SIZE_EP0, 0);
Kojto 71:53949e6131f6 387
Kojto 71:53949e6131f6 388 // Attach IRQ
Kojto 71:53949e6131f6 389 instance = this;
Kojto 71:53949e6131f6 390 NVIC_SetVector(USB_IRQn, (uint32_t)&_usbisr);
Kojto 71:53949e6131f6 391
Kojto 71:53949e6131f6 392 // Enable interrupts for device events and EP0
Kojto 71:53949e6131f6 393 LPC_USB->USBDevIntEn = EP_SLOW | DEV_STAT | FRAME;
Kojto 71:53949e6131f6 394 enableEndpointEvent(EP0IN);
Kojto 71:53949e6131f6 395 enableEndpointEvent(EP0OUT);
Kojto 71:53949e6131f6 396 }
Kojto 71:53949e6131f6 397
Kojto 71:53949e6131f6 398 USBHAL::~USBHAL(void) {
Kojto 71:53949e6131f6 399 // Ensure device disconnected
Kojto 71:53949e6131f6 400 SIEdisconnect();
Kojto 71:53949e6131f6 401 // Disable USB interrupts
Kojto 71:53949e6131f6 402 NVIC_DisableIRQ(USB_IRQn);
Kojto 71:53949e6131f6 403 }
Kojto 71:53949e6131f6 404
Kojto 71:53949e6131f6 405 void USBHAL::connect(void) {
Kojto 71:53949e6131f6 406 NVIC_EnableIRQ(USB_IRQn);
Kojto 71:53949e6131f6 407 // Connect USB device
Kojto 71:53949e6131f6 408 SIEconnect();
Kojto 71:53949e6131f6 409 }
Kojto 71:53949e6131f6 410
Kojto 71:53949e6131f6 411 void USBHAL::disconnect(void) {
Kojto 71:53949e6131f6 412 NVIC_DisableIRQ(USB_IRQn);
Kojto 71:53949e6131f6 413 // Disconnect USB device
Kojto 71:53949e6131f6 414 SIEdisconnect();
Kojto 71:53949e6131f6 415 }
Kojto 71:53949e6131f6 416
Kojto 71:53949e6131f6 417 void USBHAL::configureDevice(void) {
Kojto 71:53949e6131f6 418 SIEconfigureDevice();
Kojto 71:53949e6131f6 419 }
Kojto 71:53949e6131f6 420
Kojto 71:53949e6131f6 421 void USBHAL::unconfigureDevice(void) {
Kojto 71:53949e6131f6 422 SIEunconfigureDevice();
Kojto 71:53949e6131f6 423 }
Kojto 71:53949e6131f6 424
Kojto 71:53949e6131f6 425 void USBHAL::setAddress(uint8_t address) {
Kojto 71:53949e6131f6 426 SIEsetAddress(address);
Kojto 71:53949e6131f6 427 }
Kojto 71:53949e6131f6 428
Kojto 71:53949e6131f6 429 void USBHAL::EP0setup(uint8_t *buffer) {
Kojto 71:53949e6131f6 430 endpointReadcore(EP0OUT, buffer);
Kojto 71:53949e6131f6 431 }
Kojto 71:53949e6131f6 432
Kojto 71:53949e6131f6 433 void USBHAL::EP0read(void) {
Kojto 71:53949e6131f6 434 // Not required
Kojto 71:53949e6131f6 435 }
Kojto 71:53949e6131f6 436
Kojto 71:53949e6131f6 437 void USBHAL::EP0readStage(void) {
Kojto 71:53949e6131f6 438 // Not required
Kojto 71:53949e6131f6 439 }
Kojto 71:53949e6131f6 440
Kojto 71:53949e6131f6 441 uint32_t USBHAL::EP0getReadResult(uint8_t *buffer) {
Kojto 71:53949e6131f6 442 return endpointReadcore(EP0OUT, buffer);
Kojto 71:53949e6131f6 443 }
Kojto 71:53949e6131f6 444
Kojto 71:53949e6131f6 445 void USBHAL::EP0write(uint8_t *buffer, uint32_t size) {
Kojto 71:53949e6131f6 446 endpointWritecore(EP0IN, buffer, size);
Kojto 71:53949e6131f6 447 }
Kojto 71:53949e6131f6 448
Kojto 71:53949e6131f6 449 void USBHAL::EP0getWriteResult(void) {
Kojto 71:53949e6131f6 450 // Not required
Kojto 71:53949e6131f6 451 }
Kojto 71:53949e6131f6 452
Kojto 71:53949e6131f6 453 void USBHAL::EP0stall(void) {
Kojto 71:53949e6131f6 454 // This will stall both control endpoints
Kojto 71:53949e6131f6 455 stallEndpoint(EP0OUT);
Kojto 71:53949e6131f6 456 }
Kojto 71:53949e6131f6 457
Kojto 71:53949e6131f6 458 EP_STATUS USBHAL::endpointRead(uint8_t endpoint, uint32_t maximumSize) {
Kojto 71:53949e6131f6 459 return EP_PENDING;
Kojto 71:53949e6131f6 460 }
Kojto 71:53949e6131f6 461
Kojto 71:53949e6131f6 462 EP_STATUS USBHAL::endpointReadResult(uint8_t endpoint, uint8_t * buffer, uint32_t *bytesRead) {
Kojto 71:53949e6131f6 463
Kojto 71:53949e6131f6 464 //for isochronous endpoint, we don't wait an interrupt
Kojto 71:53949e6131f6 465 if ((endpoint >> 1) % 3 || (endpoint >> 1) == 0) {
Kojto 71:53949e6131f6 466 if (!(epComplete & EP(endpoint)))
Kojto 71:53949e6131f6 467 return EP_PENDING;
Kojto 71:53949e6131f6 468 }
Kojto 71:53949e6131f6 469
Kojto 71:53949e6131f6 470 *bytesRead = endpointReadcore(endpoint, buffer);
Kojto 71:53949e6131f6 471 epComplete &= ~EP(endpoint);
Kojto 71:53949e6131f6 472 return EP_COMPLETED;
Kojto 71:53949e6131f6 473 }
Kojto 71:53949e6131f6 474
Kojto 71:53949e6131f6 475 EP_STATUS USBHAL::endpointWrite(uint8_t endpoint, uint8_t *data, uint32_t size) {
Kojto 71:53949e6131f6 476 if (getEndpointStallState(endpoint)) {
Kojto 71:53949e6131f6 477 return EP_STALLED;
Kojto 71:53949e6131f6 478 }
Kojto 71:53949e6131f6 479
Kojto 71:53949e6131f6 480 epComplete &= ~EP(endpoint);
Kojto 71:53949e6131f6 481
Kojto 71:53949e6131f6 482 endpointWritecore(endpoint, data, size);
Kojto 71:53949e6131f6 483 return EP_PENDING;
Kojto 71:53949e6131f6 484 }
Kojto 71:53949e6131f6 485
Kojto 71:53949e6131f6 486 EP_STATUS USBHAL::endpointWriteResult(uint8_t endpoint) {
Kojto 71:53949e6131f6 487 if (epComplete & EP(endpoint)) {
Kojto 71:53949e6131f6 488 epComplete &= ~EP(endpoint);
Kojto 71:53949e6131f6 489 return EP_COMPLETED;
Kojto 71:53949e6131f6 490 }
Kojto 71:53949e6131f6 491
Kojto 71:53949e6131f6 492 return EP_PENDING;
Kojto 71:53949e6131f6 493 }
Kojto 71:53949e6131f6 494
Kojto 71:53949e6131f6 495 bool USBHAL::realiseEndpoint(uint8_t endpoint, uint32_t maxPacket, uint32_t flags) {
Kojto 71:53949e6131f6 496 // Realise an endpoint
Kojto 71:53949e6131f6 497 LPC_USB->USBDevIntClr = EP_RLZED;
Kojto 71:53949e6131f6 498 LPC_USB->USBReEp |= EP(endpoint);
Kojto 71:53949e6131f6 499 LPC_USB->USBEpInd = endpoint;
Kojto 71:53949e6131f6 500 LPC_USB->USBMaxPSize = maxPacket;
Kojto 71:53949e6131f6 501
Kojto 71:53949e6131f6 502 while (!(LPC_USB->USBDevIntSt & EP_RLZED));
Kojto 71:53949e6131f6 503 LPC_USB->USBDevIntClr = EP_RLZED;
Kojto 71:53949e6131f6 504
Kojto 71:53949e6131f6 505 // Clear stall state
Kojto 71:53949e6131f6 506 endpointStallState &= ~EP(endpoint);
Kojto 71:53949e6131f6 507
Kojto 71:53949e6131f6 508 enableEndpointEvent(endpoint);
Kojto 71:53949e6131f6 509 return true;
Kojto 71:53949e6131f6 510 }
Kojto 71:53949e6131f6 511
Kojto 71:53949e6131f6 512 void USBHAL::stallEndpoint(uint8_t endpoint) {
Kojto 71:53949e6131f6 513 // Stall an endpoint
Kojto 71:53949e6131f6 514 if ( (endpoint==EP0IN) || (endpoint==EP0OUT) ) {
Kojto 71:53949e6131f6 515 // Conditionally stall both control endpoints
Kojto 71:53949e6131f6 516 SIEsetEndpointStatus(EP0OUT, SIE_SES_CND_ST);
Kojto 71:53949e6131f6 517 } else {
Kojto 71:53949e6131f6 518 SIEsetEndpointStatus(endpoint, SIE_SES_ST);
Kojto 71:53949e6131f6 519
Kojto 71:53949e6131f6 520 // Update stall state
Kojto 71:53949e6131f6 521 endpointStallState |= EP(endpoint);
Kojto 71:53949e6131f6 522 }
Kojto 71:53949e6131f6 523 }
Kojto 71:53949e6131f6 524
Kojto 71:53949e6131f6 525 void USBHAL::unstallEndpoint(uint8_t endpoint) {
Kojto 71:53949e6131f6 526 // Unstall an endpoint. The endpoint will also be reinitialised
Kojto 71:53949e6131f6 527 SIEsetEndpointStatus(endpoint, 0);
Kojto 71:53949e6131f6 528
Kojto 71:53949e6131f6 529 // Update stall state
Kojto 71:53949e6131f6 530 endpointStallState &= ~EP(endpoint);
Kojto 71:53949e6131f6 531 }
Kojto 71:53949e6131f6 532
Kojto 71:53949e6131f6 533 bool USBHAL::getEndpointStallState(uint8_t endpoint) {
Kojto 71:53949e6131f6 534 // Returns true if endpoint stalled
Kojto 71:53949e6131f6 535 return endpointStallState & EP(endpoint);
Kojto 71:53949e6131f6 536 }
Kojto 71:53949e6131f6 537
Kojto 71:53949e6131f6 538 void USBHAL::remoteWakeup(void) {
Kojto 71:53949e6131f6 539 // Remote wakeup
Kojto 71:53949e6131f6 540 uint8_t status;
Kojto 71:53949e6131f6 541
Kojto 71:53949e6131f6 542 // Enable USB clocks
Kojto 71:53949e6131f6 543 LPC_USB->USBClkCtrl |= DEV_CLK_EN | AHB_CLK_EN;
Kojto 71:53949e6131f6 544 while (LPC_USB->USBClkSt != (DEV_CLK_ON | AHB_CLK_ON));
Kojto 71:53949e6131f6 545
Kojto 71:53949e6131f6 546 status = SIEgetDeviceStatus();
Kojto 71:53949e6131f6 547 SIEsetDeviceStatus(status & ~SIE_DS_SUS);
Kojto 71:53949e6131f6 548 }
Kojto 71:53949e6131f6 549
Kojto 71:53949e6131f6 550 void USBHAL::_usbisr(void) {
Kojto 71:53949e6131f6 551 instance->usbisr();
Kojto 71:53949e6131f6 552 }
Kojto 71:53949e6131f6 553
Kojto 71:53949e6131f6 554
Kojto 71:53949e6131f6 555 void USBHAL::usbisr(void) {
Kojto 71:53949e6131f6 556 uint8_t devStat;
Kojto 71:53949e6131f6 557
Kojto 71:53949e6131f6 558 if (LPC_USB->USBDevIntSt & FRAME) {
Kojto 71:53949e6131f6 559 // Start of frame event
Kojto 71:53949e6131f6 560 SOF(SIEgetFrameNumber());
Kojto 71:53949e6131f6 561 // Clear interrupt status flag
Kojto 71:53949e6131f6 562 LPC_USB->USBDevIntClr = FRAME;
Kojto 71:53949e6131f6 563 }
Kojto 71:53949e6131f6 564
Kojto 71:53949e6131f6 565 if (LPC_USB->USBDevIntSt & DEV_STAT) {
Kojto 71:53949e6131f6 566 // Device Status interrupt
Kojto 71:53949e6131f6 567 // Must clear the interrupt status flag before reading the device status from the SIE
Kojto 71:53949e6131f6 568 LPC_USB->USBDevIntClr = DEV_STAT;
Kojto 71:53949e6131f6 569
Kojto 71:53949e6131f6 570 // Read device status from SIE
Kojto 71:53949e6131f6 571 devStat = SIEgetDeviceStatus();
Kojto 71:53949e6131f6 572 //printf("devStat: %d\r\n", devStat);
Kojto 71:53949e6131f6 573
Kojto 71:53949e6131f6 574 if (devStat & SIE_DS_SUS_CH) {
Kojto 71:53949e6131f6 575 // Suspend status changed
Kojto 71:53949e6131f6 576 if((devStat & SIE_DS_SUS) != 0) {
Kojto 71:53949e6131f6 577 suspendStateChanged(0);
Kojto 71:53949e6131f6 578 }
Kojto 71:53949e6131f6 579 }
Kojto 71:53949e6131f6 580
Kojto 71:53949e6131f6 581 if (devStat & SIE_DS_RST) {
Kojto 71:53949e6131f6 582 // Bus reset
Kojto 71:53949e6131f6 583 if((devStat & SIE_DS_SUS) == 0) {
Kojto 71:53949e6131f6 584 suspendStateChanged(1);
Kojto 71:53949e6131f6 585 }
Kojto 71:53949e6131f6 586 busReset();
Kojto 71:53949e6131f6 587 }
Kojto 71:53949e6131f6 588 }
Kojto 71:53949e6131f6 589
Kojto 71:53949e6131f6 590 if (LPC_USB->USBDevIntSt & EP_SLOW) {
Kojto 71:53949e6131f6 591 // (Slow) Endpoint Interrupt
Kojto 71:53949e6131f6 592
Kojto 71:53949e6131f6 593 // Process each endpoint interrupt
Kojto 71:53949e6131f6 594 if (LPC_USB->USBEpIntSt & EP(EP0OUT)) {
Kojto 71:53949e6131f6 595 if (selectEndpointClearInterrupt(EP0OUT) & SIE_SE_STP) {
Kojto 71:53949e6131f6 596 // this is a setup packet
Kojto 71:53949e6131f6 597 EP0setupCallback();
Kojto 71:53949e6131f6 598 } else {
Kojto 71:53949e6131f6 599 EP0out();
Kojto 71:53949e6131f6 600 }
Kojto 71:53949e6131f6 601 LPC_USB->USBDevIntClr = EP_SLOW;
Kojto 71:53949e6131f6 602 }
Kojto 71:53949e6131f6 603
Kojto 71:53949e6131f6 604 if (LPC_USB->USBEpIntSt & EP(EP0IN)) {
Kojto 71:53949e6131f6 605 selectEndpointClearInterrupt(EP0IN);
Kojto 71:53949e6131f6 606 LPC_USB->USBDevIntClr = EP_SLOW;
Kojto 71:53949e6131f6 607 EP0in();
Kojto 71:53949e6131f6 608 }
Kojto 71:53949e6131f6 609
Kojto 71:53949e6131f6 610 for (uint8_t num = 2; num < 16*2; num++) {
Kojto 71:53949e6131f6 611 if (LPC_USB->USBEpIntSt & EP(num)) {
Kojto 71:53949e6131f6 612 selectEndpointClearInterrupt(num);
Kojto 71:53949e6131f6 613 epComplete |= EP(num);
Kojto 71:53949e6131f6 614 LPC_USB->USBDevIntClr = EP_SLOW;
Kojto 71:53949e6131f6 615 if ((instance->*(epCallback[num - 2]))()) {
Kojto 71:53949e6131f6 616 epComplete &= ~EP(num);
Kojto 71:53949e6131f6 617 }
Kojto 71:53949e6131f6 618 }
Kojto 71:53949e6131f6 619 }
Kojto 71:53949e6131f6 620 }
Kojto 71:53949e6131f6 621 }
Kojto 71:53949e6131f6 622
Kojto 71:53949e6131f6 623 #endif