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155
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1 /*
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2 * Test send/receive functions of IRremote, using a pair of Arduinos.
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3 *
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4 * Arduino #1 should have an IR LED connected to the send pin (3).
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5 * Arduino #2 should have an IR detector/demodulator connected to the
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6 * receive pin (11) and a visible LED connected to pin 3.
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7 *
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8 * The cycle:
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9 * Arduino #1 will wait 2 seconds, then run through the tests.
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10 * It repeats this forever.
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11 * Arduino #2 will wait for at least one second of no signal
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12 * (to synchronize with #1). It will then wait for the same test
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13 * signals. It will log all the status to the serial port. It will
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14 * also indicate status through the LED, which will flash each time a test
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15 * is completed. If there is an error, it will light up for 5 seconds.
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16 *
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17 * The test passes if the LED flashes 19 times, pauses, and then repeats.
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18 * The test fails if the LED lights for 5 seconds.
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19 *
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20 * The test software automatically decides which board is the sender and which is
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21 * the receiver by looking for an input on the send pin, which will indicate
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22 * the sender. You should hook the serial port to the receiver for debugging.
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23 *
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24 * Copyright 2010 Ken Shirriff
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25 * http://arcfn.com
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26 */
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27
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28 #include <IRremote.h>
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29
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30 int RECV_PIN = 11;
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31 int LED_PIN = 3;
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32
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33 IRrecv irrecv(RECV_PIN);
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34 IRsend irsend;
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35
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36 decode_results results;
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37
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38 #define RECEIVER 1
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39 #define SENDER 2
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40 #define ERROR 3
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41
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42 int mode;
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43
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44 void setup()
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45 {
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46 Serial.begin(9600);
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47 // Check RECV_PIN to decide if we're RECEIVER or SENDER
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48 if (digitalRead(RECV_PIN) == HIGH) {
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49 mode = RECEIVER;
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50 irrecv.enableIRIn();
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51 pinMode(LED_PIN, OUTPUT);
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52 digitalWrite(LED_PIN, LOW);
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53 Serial.println("Receiver mode");
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54 }
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55 else {
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56 mode = SENDER;
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57 Serial.println("Sender mode");
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58 }
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59 }
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60
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61 // Wait for the gap between tests, to synchronize with
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62 // the sender.
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63 // Specifically, wait for a signal followed by a gap of at last gap ms.
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64 void waitForGap(int gap) {
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65 Serial.println("Waiting for gap");
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66 while (1) {
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67 while (digitalRead(RECV_PIN) == LOW) {
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68 }
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69 unsigned long time = millis();
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70 while (digitalRead(RECV_PIN) == HIGH) {
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71 if (millis() - time > gap) {
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72 return;
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73 }
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74 }
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75 }
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76 }
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77
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78 // Dumps out the decode_results structure.
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79 // Call this after IRrecv::decode()
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80 void dump(decode_results *results) {
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81 int count = results->rawlen;
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82 if (results->decode_type == UNKNOWN) {
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83 Serial.println("Could not decode message");
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84 }
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85 else {
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86 if (results->decode_type == NEC) {
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87 Serial.print("Decoded NEC: ");
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88 }
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89 else if (results->decode_type == SONY) {
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90 Serial.print("Decoded SONY: ");
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91 }
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92 else if (results->decode_type == RC5) {
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93 Serial.print("Decoded RC5: ");
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94 }
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95 else if (results->decode_type == RC6) {
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96 Serial.print("Decoded RC6: ");
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97 }
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98 Serial.print(results->value, HEX);
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99 Serial.print(" (");
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100 Serial.print(results->bits, DEC);
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101 Serial.println(" bits)");
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102 }
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103 Serial.print("Raw (");
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104 Serial.print(count, DEC);
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105 Serial.print("): ");
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106
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107 for (int i = 0; i < count; i++) {
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108 if ((i % 2) == 1) {
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109 Serial.print(results->rawbuf[i]*USECPERTICK, DEC);
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110 }
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111 else {
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112 Serial.print(-(int)results->rawbuf[i]*USECPERTICK, DEC);
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113 }
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114 Serial.print(" ");
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115 }
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116 Serial.println("");
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117 }
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118
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119
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120 // Test send or receive.
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121 // If mode is SENDER, send a code of the specified type, value, and bits
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122 // If mode is RECEIVER, receive a code and verify that it is of the
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123 // specified type, value, and bits. For success, the LED is flashed;
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124 // for failure, the mode is set to ERROR.
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125 // The motivation behind this method is that the sender and the receiver
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126 // can do the same test calls, and the mode variable indicates whether
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127 // to send or receive.
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128 void test(char *label, int type, unsigned long value, int bits) {
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129 if (mode == SENDER) {
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130 Serial.println(label);
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131 if (type == NEC) {
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132 irsend.sendNEC(value, bits);
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133 }
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134 else if (type == SONY) {
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135 irsend.sendSony(value, bits);
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136 }
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137 else if (type == RC5) {
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138 irsend.sendRC5(value, bits);
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139 }
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140 else if (type == RC6) {
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141 irsend.sendRC6(value, bits);
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142 }
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143 else {
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144 Serial.print(label);
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145 Serial.println("Bad type!");
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146 }
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147 delay(200);
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148 }
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149 else if (mode == RECEIVER) {
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150 irrecv.resume(); // Receive the next value
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151 unsigned long max_time = millis() + 30000;
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152 Serial.print(label);
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153
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154 // Wait for decode or timeout
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155 while (!irrecv.decode(&results)) {
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156 if (millis() > max_time) {
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157 Serial.println("Timeout receiving data");
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158 mode = ERROR;
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159 return;
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160 }
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161 }
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162 if (type == results.decode_type && value == results.value && bits == results.bits) {
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163 Serial.println (": OK");
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164 digitalWrite(LED_PIN, HIGH);
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165 delay(20);
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166 digitalWrite(LED_PIN, LOW);
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167 }
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168 else {
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169 Serial.println(": BAD");
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170 dump(&results);
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171 mode = ERROR;
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172 }
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173 }
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174 }
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175
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176 // Test raw send or receive. This is similar to the test method,
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177 // except it send/receives raw data.
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178 void testRaw(char *label, unsigned int *rawbuf, int rawlen) {
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179 if (mode == SENDER) {
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180 Serial.println(label);
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181 irsend.sendRaw(rawbuf, rawlen, 38 /* kHz */);
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182 delay(200);
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183 }
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184 else if (mode == RECEIVER ) {
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185 irrecv.resume(); // Receive the next value
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186 unsigned long max_time = millis() + 30000;
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187 Serial.print(label);
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188
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189 // Wait for decode or timeout
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190 while (!irrecv.decode(&results)) {
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191 if (millis() > max_time) {
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192 Serial.println("Timeout receiving data");
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193 mode = ERROR;
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194 return;
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195 }
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196 }
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197
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198 // Received length has extra first element for gap
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199 if (rawlen != results.rawlen - 1) {
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200 Serial.print("Bad raw length ");
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201 Serial.println(results.rawlen, DEC);
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202 mode = ERROR;
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203 return;
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204 }
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205 for (int i = 0; i < rawlen; i++) {
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206 long got = results.rawbuf[i+1] * USECPERTICK;
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207 // Adjust for extra duration of marks
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208 if (i % 2 == 0) {
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209 got -= MARK_EXCESS;
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210 }
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211 else {
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212 got += MARK_EXCESS;
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213 }
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214 // See if close enough, within 25%
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215 if (rawbuf[i] * 1.25 < got || got * 1.25 < rawbuf[i]) {
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216 Serial.println(": BAD");
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217 dump(&results);
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218 mode = ERROR;
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219 return;
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220 }
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221
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222 }
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223 Serial.println (": OK");
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224 digitalWrite(LED_PIN, HIGH);
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225 delay(20);
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226 digitalWrite(LED_PIN, LOW);
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227 }
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228 }
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229
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230 // This is the raw data corresponding to NEC 0x12345678
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231 unsigned int sendbuf[] = { /* NEC format */
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232 9000, 4500,
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233 560, 560, 560, 560, 560, 560, 560, 1690, /* 1 */
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234 560, 560, 560, 560, 560, 1690, 560, 560, /* 2 */
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235 560, 560, 560, 560, 560, 1690, 560, 1690, /* 3 */
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236 560, 560, 560, 1690, 560, 560, 560, 560, /* 4 */
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237 560, 560, 560, 1690, 560, 560, 560, 1690, /* 5 */
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238 560, 560, 560, 1690, 560, 1690, 560, 560, /* 6 */
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239 560, 560, 560, 1690, 560, 1690, 560, 1690, /* 7 */
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240 560, 1690, 560, 560, 560, 560, 560, 560, /* 8 */
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241 560};
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242
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243 void loop() {
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244 if (mode == SENDER) {
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245 delay(2000); // Delay for more than gap to give receiver a better chance to sync.
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246 }
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247 else if (mode == RECEIVER) {
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248 waitForGap(1000);
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249 }
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250 else if (mode == ERROR) {
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251 // Light up for 5 seconds for error
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252 digitalWrite(LED_PIN, HIGH);
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253 delay(5000);
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254 digitalWrite(LED_PIN, LOW);
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255 mode = RECEIVER; // Try again
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256 return;
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257 }
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258
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259 // The test suite.
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260 test("SONY1", SONY, 0x123, 12);
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261 test("SONY2", SONY, 0x000, 12);
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262 test("SONY3", SONY, 0xfff, 12);
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263 test("SONY4", SONY, 0x12345, 20);
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264 test("SONY5", SONY, 0x00000, 20);
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265 test("SONY6", SONY, 0xfffff, 20);
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266 test("NEC1", NEC, 0x12345678, 32);
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267 test("NEC2", NEC, 0x00000000, 32);
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268 test("NEC3", NEC, 0xffffffff, 32);
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269 test("NEC4", NEC, REPEAT, 32);
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270 test("RC51", RC5, 0x12345678, 32);
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271 test("RC52", RC5, 0x0, 32);
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272 test("RC53", RC5, 0xffffffff, 32);
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273 test("RC61", RC6, 0x12345678, 32);
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274 test("RC62", RC6, 0x0, 32);
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275 test("RC63", RC6, 0xffffffff, 32);
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276
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277 // Tests of raw sending and receiving.
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278 // First test sending raw and receiving raw.
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279 // Then test sending raw and receiving decoded NEC
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280 // Then test sending NEC and receiving raw
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281 testRaw("RAW1", sendbuf, 67);
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282 if (mode == SENDER) {
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283 testRaw("RAW2", sendbuf, 67);
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284 test("RAW3", NEC, 0x12345678, 32);
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285 }
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286 else {
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287 test("RAW2", NEC, 0x12345678, 32);
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288 testRaw("RAW3", sendbuf, 67);
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289 }
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290 }
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