Andrew Schaeffer / Mbed 2 deprecated OU_Davis_Old_Robot

This is the project for the Old Model Robots for OU's Dr. Davis's Configurable Robots Research. This is being published so future robots can be set up easily.

Dependencies:   FatFileSystem MCP3008 Motor PinDetect QTR_8A SRF05 SSD1308_128x64_I2C mbed

RemoteIR/ReceiverIR.cpp@0:bcad524c1856, 2017-11-01 (annotated)

Committer:
DrewSchaef
Date:
Wed Nov 01 15:57:59 2017 +0000
Revision:
0:bcad524c1856
Published the project to allow access for future work on the Configurable Robots Research Project(s).

Who changed what in which revision?

UserRevisionLine numberNew contents of line
DrewSchaef 0:bcad524c1856 1 /**
DrewSchaef 0:bcad524c1856 2 * IR receiver (Version 0.0.4)
DrewSchaef 0:bcad524c1856 3 *
DrewSchaef 0:bcad524c1856 4 * Copyright (C) 2010 Shinichiro Nakamura (CuBeatSystems)
DrewSchaef 0:bcad524c1856 5 * http://shinta.main.jp/
DrewSchaef 0:bcad524c1856 6 */
DrewSchaef 0:bcad524c1856 7
DrewSchaef 0:bcad524c1856 8 #include "ReceiverIR.h"
DrewSchaef 0:bcad524c1856 9
DrewSchaef 0:bcad524c1856 10 #define LOCK()
DrewSchaef 0:bcad524c1856 11 #define UNLOCK()
DrewSchaef 0:bcad524c1856 12
DrewSchaef 0:bcad524c1856 13 #define InRange(x,y) ((((y) * 0.7) < (x)) && ((x) < ((y) * 1.3)))
DrewSchaef 0:bcad524c1856 14
DrewSchaef 0:bcad524c1856 15 /**
DrewSchaef 0:bcad524c1856 16 * Constructor.
DrewSchaef 0:bcad524c1856 17 *
DrewSchaef 0:bcad524c1856 18 * @param rxpin Pin for receive IR signal.
DrewSchaef 0:bcad524c1856 19 */
DrewSchaef 0:bcad524c1856 20 ReceiverIR::ReceiverIR(PinName rxpin) : evt(rxpin) {
DrewSchaef 0:bcad524c1856 21 init_state();
DrewSchaef 0:bcad524c1856 22 evt.fall(this, &ReceiverIR::isr_fall);
DrewSchaef 0:bcad524c1856 23 evt.rise(this, &ReceiverIR::isr_rise);
DrewSchaef 0:bcad524c1856 24 evt.mode(PullUp);
DrewSchaef 0:bcad524c1856 25 ticker.attach_us(this, &ReceiverIR::isr_wdt, 10 * 1000);
DrewSchaef 0:bcad524c1856 26 }
DrewSchaef 0:bcad524c1856 27
DrewSchaef 0:bcad524c1856 28 /**
DrewSchaef 0:bcad524c1856 29 * Destructor.
DrewSchaef 0:bcad524c1856 30 */
DrewSchaef 0:bcad524c1856 31 ReceiverIR::~ReceiverIR() {
DrewSchaef 0:bcad524c1856 32 }
DrewSchaef 0:bcad524c1856 33
DrewSchaef 0:bcad524c1856 34 /**
DrewSchaef 0:bcad524c1856 35 * Get state.
DrewSchaef 0:bcad524c1856 36 *
DrewSchaef 0:bcad524c1856 37 * @return Current state.
DrewSchaef 0:bcad524c1856 38 */
DrewSchaef 0:bcad524c1856 39 ReceiverIR::State ReceiverIR::getState() {
DrewSchaef 0:bcad524c1856 40 LOCK();
DrewSchaef 0:bcad524c1856 41 State s = work.state;
DrewSchaef 0:bcad524c1856 42 UNLOCK();
DrewSchaef 0:bcad524c1856 43 return s;
DrewSchaef 0:bcad524c1856 44 }
DrewSchaef 0:bcad524c1856 45
DrewSchaef 0:bcad524c1856 46 /**
DrewSchaef 0:bcad524c1856 47 * Get data.
DrewSchaef 0:bcad524c1856 48 *
DrewSchaef 0:bcad524c1856 49 * @param format Pointer to format.
DrewSchaef 0:bcad524c1856 50 * @param buf Buffer of a data.
DrewSchaef 0:bcad524c1856 51 * @param bitlength Bit length of the buffer.
DrewSchaef 0:bcad524c1856 52 *
DrewSchaef 0:bcad524c1856 53 * @return Data bit length.
DrewSchaef 0:bcad524c1856 54 */
DrewSchaef 0:bcad524c1856 55 int ReceiverIR::getData(RemoteIR::Format *format, uint8_t *buf, int bitlength) {
DrewSchaef 0:bcad524c1856 56 LOCK();
DrewSchaef 0:bcad524c1856 57
DrewSchaef 0:bcad524c1856 58 if (bitlength < data.bitcount) {
DrewSchaef 0:bcad524c1856 59 UNLOCK();
DrewSchaef 0:bcad524c1856 60 return -1;
DrewSchaef 0:bcad524c1856 61 }
DrewSchaef 0:bcad524c1856 62
DrewSchaef 0:bcad524c1856 63 const int nbits = data.bitcount;
DrewSchaef 0:bcad524c1856 64 const int nbytes = data.bitcount / 8 + (((data.bitcount % 8) != 0) ? 1 : 0);
DrewSchaef 0:bcad524c1856 65 *format = data.format;
DrewSchaef 0:bcad524c1856 66 for (int i = 0; i < nbytes; i++) {
DrewSchaef 0:bcad524c1856 67 buf[i] = data.buffer[i];
DrewSchaef 0:bcad524c1856 68 }
DrewSchaef 0:bcad524c1856 69
DrewSchaef 0:bcad524c1856 70 init_state();
DrewSchaef 0:bcad524c1856 71
DrewSchaef 0:bcad524c1856 72 UNLOCK();
DrewSchaef 0:bcad524c1856 73 return nbits;
DrewSchaef 0:bcad524c1856 74 }
DrewSchaef 0:bcad524c1856 75
DrewSchaef 0:bcad524c1856 76 void ReceiverIR::init_state(void) {
DrewSchaef 0:bcad524c1856 77 work.c1 = -1;
DrewSchaef 0:bcad524c1856 78 work.c2 = -1;
DrewSchaef 0:bcad524c1856 79 work.c3 = -1;
DrewSchaef 0:bcad524c1856 80 work.d1 = -1;
DrewSchaef 0:bcad524c1856 81 work.d2 = -1;
DrewSchaef 0:bcad524c1856 82 work.state = Idle;
DrewSchaef 0:bcad524c1856 83 data.format = RemoteIR::UNKNOWN;
DrewSchaef 0:bcad524c1856 84 data.bitcount = 0;
DrewSchaef 0:bcad524c1856 85 timer.stop();
DrewSchaef 0:bcad524c1856 86 timer.reset();
DrewSchaef 0:bcad524c1856 87 for (int i = 0; i < sizeof(data.buffer); i++) {
DrewSchaef 0:bcad524c1856 88 data.buffer[i] = 0;
DrewSchaef 0:bcad524c1856 89 }
DrewSchaef 0:bcad524c1856 90 }
DrewSchaef 0:bcad524c1856 91
DrewSchaef 0:bcad524c1856 92 void ReceiverIR::isr_wdt(void) {
DrewSchaef 0:bcad524c1856 93 LOCK();
DrewSchaef 0:bcad524c1856 94 static int cnt = 0;
DrewSchaef 0:bcad524c1856 95 if ((Idle != work.state) || ((0 <= work.c1) || (0 <= work.c2) || (0 <= work.c3) || (0 <= work.d1) || (0 <= work.d2))) {
DrewSchaef 0:bcad524c1856 96 cnt++;
DrewSchaef 0:bcad524c1856 97 if (cnt > 50) {
DrewSchaef 0:bcad524c1856 98 #if 0
DrewSchaef 0:bcad524c1856 99 printf("# WDT [c1=%d, c2=%d, c3=%d, d1=%d, d2=%d, state=%d, format=%d, bitcount=%d]\n",
DrewSchaef 0:bcad524c1856 100 work.c1,
DrewSchaef 0:bcad524c1856 101 work.c2,
DrewSchaef 0:bcad524c1856 102 work.c3,
DrewSchaef 0:bcad524c1856 103 work.d1,
DrewSchaef 0:bcad524c1856 104 work.d2,
DrewSchaef 0:bcad524c1856 105 work.state,
DrewSchaef 0:bcad524c1856 106 data.format,
DrewSchaef 0:bcad524c1856 107 data.bitcount);
DrewSchaef 0:bcad524c1856 108 #endif
DrewSchaef 0:bcad524c1856 109 init_state();
DrewSchaef 0:bcad524c1856 110 cnt = 0;
DrewSchaef 0:bcad524c1856 111 }
DrewSchaef 0:bcad524c1856 112 } else {
DrewSchaef 0:bcad524c1856 113 cnt = 0;
DrewSchaef 0:bcad524c1856 114 }
DrewSchaef 0:bcad524c1856 115 UNLOCK();
DrewSchaef 0:bcad524c1856 116 }
DrewSchaef 0:bcad524c1856 117
DrewSchaef 0:bcad524c1856 118 void ReceiverIR::isr_fall(void) {
DrewSchaef 0:bcad524c1856 119 LOCK();
DrewSchaef 0:bcad524c1856 120 switch (work.state) {
DrewSchaef 0:bcad524c1856 121 case Idle:
DrewSchaef 0:bcad524c1856 122 if (work.c1 < 0) {
DrewSchaef 0:bcad524c1856 123 timer.start();
DrewSchaef 0:bcad524c1856 124 work.c1 = timer.read_us();
DrewSchaef 0:bcad524c1856 125 } else {
DrewSchaef 0:bcad524c1856 126 work.c3 = timer.read_us();
DrewSchaef 0:bcad524c1856 127 int a = work.c2 - work.c1;
DrewSchaef 0:bcad524c1856 128 int b = work.c3 - work.c2;
DrewSchaef 0:bcad524c1856 129 if (InRange(a, RemoteIR::TUS_NEC * 16) && InRange(b, RemoteIR::TUS_NEC * 8)) {
DrewSchaef 0:bcad524c1856 130 /*
DrewSchaef 0:bcad524c1856 131 * NEC.
DrewSchaef 0:bcad524c1856 132 */
DrewSchaef 0:bcad524c1856 133 data.format = RemoteIR::NEC;
DrewSchaef 0:bcad524c1856 134 work.state = Receiving;
DrewSchaef 0:bcad524c1856 135 data.bitcount = 0;
DrewSchaef 0:bcad524c1856 136 } else if (InRange(a, RemoteIR::TUS_NEC * 16) && InRange(b, RemoteIR::TUS_NEC * 4)) {
DrewSchaef 0:bcad524c1856 137 /*
DrewSchaef 0:bcad524c1856 138 * NEC Repeat.
DrewSchaef 0:bcad524c1856 139 */
DrewSchaef 0:bcad524c1856 140 data.format = RemoteIR::NEC_REPEAT;
DrewSchaef 0:bcad524c1856 141 work.state = Received;
DrewSchaef 0:bcad524c1856 142 data.bitcount = 0;
DrewSchaef 0:bcad524c1856 143 work.c1 = -1;
DrewSchaef 0:bcad524c1856 144 work.c2 = -1;
DrewSchaef 0:bcad524c1856 145 work.c3 = -1;
DrewSchaef 0:bcad524c1856 146 work.d1 = -1;
DrewSchaef 0:bcad524c1856 147 work.d2 = -1;
DrewSchaef 0:bcad524c1856 148 } else if (InRange(a, RemoteIR::TUS_AEHA * 8) && InRange(b, RemoteIR::TUS_AEHA * 4)) {
DrewSchaef 0:bcad524c1856 149 /*
DrewSchaef 0:bcad524c1856 150 * AEHA.
DrewSchaef 0:bcad524c1856 151 */
DrewSchaef 0:bcad524c1856 152 data.format = RemoteIR::AEHA;
DrewSchaef 0:bcad524c1856 153 work.state = Receiving;
DrewSchaef 0:bcad524c1856 154 data.bitcount = 0;
DrewSchaef 0:bcad524c1856 155 } else if (InRange(a, RemoteIR::TUS_AEHA * 8) && InRange(b, RemoteIR::TUS_AEHA * 8)) {
DrewSchaef 0:bcad524c1856 156 /*
DrewSchaef 0:bcad524c1856 157 * AEHA Repeat.
DrewSchaef 0:bcad524c1856 158 */
DrewSchaef 0:bcad524c1856 159 data.format = RemoteIR::AEHA_REPEAT;
DrewSchaef 0:bcad524c1856 160 work.state = Received;
DrewSchaef 0:bcad524c1856 161 data.bitcount = 0;
DrewSchaef 0:bcad524c1856 162 work.c1 = -1;
DrewSchaef 0:bcad524c1856 163 work.c2 = -1;
DrewSchaef 0:bcad524c1856 164 work.c3 = -1;
DrewSchaef 0:bcad524c1856 165 work.d1 = -1;
DrewSchaef 0:bcad524c1856 166 work.d2 = -1;
DrewSchaef 0:bcad524c1856 167 } else {
DrewSchaef 0:bcad524c1856 168 init_state();
DrewSchaef 0:bcad524c1856 169 }
DrewSchaef 0:bcad524c1856 170 }
DrewSchaef 0:bcad524c1856 171 break;
DrewSchaef 0:bcad524c1856 172 case Receiving:
DrewSchaef 0:bcad524c1856 173 if (RemoteIR::NEC == data.format) {
DrewSchaef 0:bcad524c1856 174 work.d2 = timer.read_us();
DrewSchaef 0:bcad524c1856 175 int a = work.d2 - work.d1;
DrewSchaef 0:bcad524c1856 176 if (InRange(a, RemoteIR::TUS_NEC * 3)) {
DrewSchaef 0:bcad524c1856 177 data.buffer[data.bitcount / 8] |= (1 << (data.bitcount % 8));
DrewSchaef 0:bcad524c1856 178 } else if (InRange(a, RemoteIR::TUS_NEC * 1)) {
DrewSchaef 0:bcad524c1856 179 data.buffer[data.bitcount / 8] &= ~(1 << (data.bitcount % 8));
DrewSchaef 0:bcad524c1856 180 }
DrewSchaef 0:bcad524c1856 181 data.bitcount++;
DrewSchaef 0:bcad524c1856 182 #if 0
DrewSchaef 0:bcad524c1856 183 /*
DrewSchaef 0:bcad524c1856 184 * Length of NEC is always 32 bits.
DrewSchaef 0:bcad524c1856 185 */
DrewSchaef 0:bcad524c1856 186 if (32 <= data.bitcount) {
DrewSchaef 0:bcad524c1856 187 data.state = Received;
DrewSchaef 0:bcad524c1856 188 work.c1 = -1;
DrewSchaef 0:bcad524c1856 189 work.c2 = -1;
DrewSchaef 0:bcad524c1856 190 work.c3 = -1;
DrewSchaef 0:bcad524c1856 191 work.d1 = -1;
DrewSchaef 0:bcad524c1856 192 work.d2 = -1;
DrewSchaef 0:bcad524c1856 193 }
DrewSchaef 0:bcad524c1856 194 #else
DrewSchaef 0:bcad524c1856 195 /*
DrewSchaef 0:bcad524c1856 196 * Set timeout for tail detection automatically.
DrewSchaef 0:bcad524c1856 197 */
DrewSchaef 0:bcad524c1856 198 timeout.detach();
DrewSchaef 0:bcad524c1856 199 timeout.attach_us(this, &ReceiverIR::isr_timeout, RemoteIR::TUS_NEC * 5);
DrewSchaef 0:bcad524c1856 200 #endif
DrewSchaef 0:bcad524c1856 201 } else if (RemoteIR::AEHA == data.format) {
DrewSchaef 0:bcad524c1856 202 work.d2 = timer.read_us();
DrewSchaef 0:bcad524c1856 203 int a = work.d2 - work.d1;
DrewSchaef 0:bcad524c1856 204 if (InRange(a, RemoteIR::TUS_AEHA * 3)) {
DrewSchaef 0:bcad524c1856 205 data.buffer[data.bitcount / 8] |= (1 << (data.bitcount % 8));
DrewSchaef 0:bcad524c1856 206 } else if (InRange(a, RemoteIR::TUS_AEHA * 1)) {
DrewSchaef 0:bcad524c1856 207 data.buffer[data.bitcount / 8] &= ~(1 << (data.bitcount % 8));
DrewSchaef 0:bcad524c1856 208 }
DrewSchaef 0:bcad524c1856 209 data.bitcount++;
DrewSchaef 0:bcad524c1856 210 #if 0
DrewSchaef 0:bcad524c1856 211 /*
DrewSchaef 0:bcad524c1856 212 * Typical length of AEHA is 48 bits.
DrewSchaef 0:bcad524c1856 213 * Please check a specification of your remote controller if you find a problem.
DrewSchaef 0:bcad524c1856 214 */
DrewSchaef 0:bcad524c1856 215 if (48 <= data.bitcount) {
DrewSchaef 0:bcad524c1856 216 data.state = Received;
DrewSchaef 0:bcad524c1856 217 work.c1 = -1;
DrewSchaef 0:bcad524c1856 218 work.c2 = -1;
DrewSchaef 0:bcad524c1856 219 work.c3 = -1;
DrewSchaef 0:bcad524c1856 220 work.d1 = -1;
DrewSchaef 0:bcad524c1856 221 work.d2 = -1;
DrewSchaef 0:bcad524c1856 222 }
DrewSchaef 0:bcad524c1856 223 #else
DrewSchaef 0:bcad524c1856 224 /*
DrewSchaef 0:bcad524c1856 225 * Set timeout for tail detection automatically.
DrewSchaef 0:bcad524c1856 226 */
DrewSchaef 0:bcad524c1856 227 timeout.detach();
DrewSchaef 0:bcad524c1856 228 timeout.attach_us(this, &ReceiverIR::isr_timeout, RemoteIR::TUS_AEHA * 5);
DrewSchaef 0:bcad524c1856 229 #endif
DrewSchaef 0:bcad524c1856 230 } else if (RemoteIR::SONY == data.format) {
DrewSchaef 0:bcad524c1856 231 work.d1 = timer.read_us();
DrewSchaef 0:bcad524c1856 232 }
DrewSchaef 0:bcad524c1856 233 break;
DrewSchaef 0:bcad524c1856 234 case Received:
DrewSchaef 0:bcad524c1856 235 break;
DrewSchaef 0:bcad524c1856 236 default:
DrewSchaef 0:bcad524c1856 237 break;
DrewSchaef 0:bcad524c1856 238 }
DrewSchaef 0:bcad524c1856 239 UNLOCK();
DrewSchaef 0:bcad524c1856 240 }
DrewSchaef 0:bcad524c1856 241
DrewSchaef 0:bcad524c1856 242 void ReceiverIR::isr_rise(void) {
DrewSchaef 0:bcad524c1856 243 LOCK();
DrewSchaef 0:bcad524c1856 244 switch (work.state) {
DrewSchaef 0:bcad524c1856 245 case Idle:
DrewSchaef 0:bcad524c1856 246 if (0 <= work.c1) {
DrewSchaef 0:bcad524c1856 247 work.c2 = timer.read_us();
DrewSchaef 0:bcad524c1856 248 int a = work.c2 - work.c1;
DrewSchaef 0:bcad524c1856 249 if (InRange(a, RemoteIR::TUS_SONY * 4)) {
DrewSchaef 0:bcad524c1856 250 data.format = RemoteIR::SONY;
DrewSchaef 0:bcad524c1856 251 work.state = Receiving;
DrewSchaef 0:bcad524c1856 252 data.bitcount = 0;
DrewSchaef 0:bcad524c1856 253 } else {
DrewSchaef 0:bcad524c1856 254 static const int MINIMUM_LEADER_WIDTH = 150;
DrewSchaef 0:bcad524c1856 255 if (a < MINIMUM_LEADER_WIDTH) {
DrewSchaef 0:bcad524c1856 256 init_state();
DrewSchaef 0:bcad524c1856 257 }
DrewSchaef 0:bcad524c1856 258 }
DrewSchaef 0:bcad524c1856 259 } else {
DrewSchaef 0:bcad524c1856 260 init_state();
DrewSchaef 0:bcad524c1856 261 }
DrewSchaef 0:bcad524c1856 262 break;
DrewSchaef 0:bcad524c1856 263 case Receiving:
DrewSchaef 0:bcad524c1856 264 if (RemoteIR::NEC == data.format) {
DrewSchaef 0:bcad524c1856 265 work.d1 = timer.read_us();
DrewSchaef 0:bcad524c1856 266 } else if (RemoteIR::AEHA == data.format) {
DrewSchaef 0:bcad524c1856 267 work.d1 = timer.read_us();
DrewSchaef 0:bcad524c1856 268 } else if (RemoteIR::SONY == data.format) {
DrewSchaef 0:bcad524c1856 269 work.d2 = timer.read_us();
DrewSchaef 0:bcad524c1856 270 int a = work.d2 - work.d1;
DrewSchaef 0:bcad524c1856 271 if (InRange(a, RemoteIR::TUS_SONY * 2)) {
DrewSchaef 0:bcad524c1856 272 data.buffer[data.bitcount / 8] |= (1 << (data.bitcount % 8));
DrewSchaef 0:bcad524c1856 273 } else if (InRange(a, RemoteIR::TUS_SONY * 1)) {
DrewSchaef 0:bcad524c1856 274 data.buffer[data.bitcount / 8] &= ~(1 << (data.bitcount % 8));
DrewSchaef 0:bcad524c1856 275 }
DrewSchaef 0:bcad524c1856 276 data.bitcount++;
DrewSchaef 0:bcad524c1856 277 #if 0
DrewSchaef 0:bcad524c1856 278 /*
DrewSchaef 0:bcad524c1856 279 * How do I know the correct length? (6bits, 12bits, 15bits, 20bits...)
DrewSchaef 0:bcad524c1856 280 * By a model only?
DrewSchaef 0:bcad524c1856 281 * Please check a specification of your remote controller if you find a problem.
DrewSchaef 0:bcad524c1856 282 */
DrewSchaef 0:bcad524c1856 283 if (12 <= data.bitcount) {
DrewSchaef 0:bcad524c1856 284 data.state = Received;
DrewSchaef 0:bcad524c1856 285 work.c1 = -1;
DrewSchaef 0:bcad524c1856 286 work.c2 = -1;
DrewSchaef 0:bcad524c1856 287 work.c3 = -1;
DrewSchaef 0:bcad524c1856 288 work.d1 = -1;
DrewSchaef 0:bcad524c1856 289 work.d2 = -1;
DrewSchaef 0:bcad524c1856 290 }
DrewSchaef 0:bcad524c1856 291 #else
DrewSchaef 0:bcad524c1856 292 /*
DrewSchaef 0:bcad524c1856 293 * Set timeout for tail detection automatically.
DrewSchaef 0:bcad524c1856 294 */
DrewSchaef 0:bcad524c1856 295 timeout.detach();
DrewSchaef 0:bcad524c1856 296 timeout.attach_us(this, &ReceiverIR::isr_timeout, RemoteIR::TUS_SONY * 4);
DrewSchaef 0:bcad524c1856 297 #endif
DrewSchaef 0:bcad524c1856 298 }
DrewSchaef 0:bcad524c1856 299 break;
DrewSchaef 0:bcad524c1856 300 case Received:
DrewSchaef 0:bcad524c1856 301 break;
DrewSchaef 0:bcad524c1856 302 default:
DrewSchaef 0:bcad524c1856 303 break;
DrewSchaef 0:bcad524c1856 304 }
DrewSchaef 0:bcad524c1856 305 UNLOCK();
DrewSchaef 0:bcad524c1856 306 }
DrewSchaef 0:bcad524c1856 307
DrewSchaef 0:bcad524c1856 308 void ReceiverIR::isr_timeout(void) {
DrewSchaef 0:bcad524c1856 309 LOCK();
DrewSchaef 0:bcad524c1856 310 #if 0
DrewSchaef 0:bcad524c1856 311 printf("# TIMEOUT [c1=%d, c2=%d, c3=%d, d1=%d, d2=%d, state=%d, format=%d, bitcount=%d]\n",
DrewSchaef 0:bcad524c1856 312 work.c1,
DrewSchaef 0:bcad524c1856 313 work.c2,
DrewSchaef 0:bcad524c1856 314 work.c3,
DrewSchaef 0:bcad524c1856 315 work.d1,
DrewSchaef 0:bcad524c1856 316 work.d2,
DrewSchaef 0:bcad524c1856 317 work.state,
DrewSchaef 0:bcad524c1856 318 data.format,
DrewSchaef 0:bcad524c1856 319 data.bitcount);
DrewSchaef 0:bcad524c1856 320 #endif
DrewSchaef 0:bcad524c1856 321 if (work.state == Receiving) {
DrewSchaef 0:bcad524c1856 322 work.state = Received;
DrewSchaef 0:bcad524c1856 323 work.c1 = -1;
DrewSchaef 0:bcad524c1856 324 work.c2 = -1;
DrewSchaef 0:bcad524c1856 325 work.c3 = -1;
DrewSchaef 0:bcad524c1856 326 work.d1 = -1;
DrewSchaef 0:bcad524c1856 327 work.d2 = -1;
DrewSchaef 0:bcad524c1856 328 }
DrewSchaef 0:bcad524c1856 329 UNLOCK();
DrewSchaef 0:bcad524c1856 330 }