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Ligne 10 :
Ligne 10 : − void printpulses(void) {+ − Serial.print(pulses[i][0] * RESOLUTION, DEC);+ − Serial.print(" usec, ");+ − Serial.print(pulses[i][1] * RESOLUTION, DEC);+ − Serial.println(" usec");+ Ligne 22 :
Ligne 22 : − Serial.print("\t"); // tab+ − Serial.print(pulses[i][1] * RESOLUTION / 10, DEC);+ − Serial.print(", ");+ − Serial.print(pulses[i+1][0] * RESOLUTION / 10, DEC);+ − Serial.println(",");+ − }+ − I uploaded the new sketch and pressed the Play button on the Apple remote and got the following:+ − + − − int IRsignal[] = { // ON, OFF (in 10's of microseconds) Ligne 77 :
Ligne 75 : − + − We'll try to detect that code. Lets start a new sketch called IR Commander ([http://github.com/adafruit/IR-Commander la version finale du code est disponible sur le GitHub d'AdaFruit]) this will use parts of our previous sketch. The first part we'll do is to create a function that just listens for an IR code an puts the pulse timings into the pulses[] array. It will return the number of pulses it heard as a return-value.+ + + − int listenForIR(void) {+ − currentpulse = 0;+ − while (1) {+ − // pin is still HIGH+ − // count off another few microseconds+ − highpulse++;+ − delayMicroseconds(RESOLUTION);+ − // If the pulse is too long, we 'timed out' - either nothing+ − // was received or the code is finished, so print what+ − // we've grabbed so far, and then reset+ − if ((highpulse >= MAXPULSE) && (currentpulse != 0)) {+ − return currentpulse;+ − }+ Ligne 105 :
Ligne 105 : − // pin is still LOW+ − lowpulse++;+ − delayMicroseconds(RESOLUTION);+ − if ((lowpulse >= MAXPULSE) && (currentpulse != 0)) {+ − return currentpulse;+ − }+ Ligne 116 :
Ligne 116 : − }+
aucun résumé de modification
<nowiki>
<nowiki>
void printpulses(void) {
Serial.println("\n\r\n\rReceived: \n\rOFF \tON");
Serial.println("\n\r\n\rReceived: \n\rOFF \tON");
for (uint8_t i = 0; i < currentpulse; i++) {
for (uint8_t i = 0; i < currentpulse; i++) {
Serial.print(pulses[i][0] * RESOLUTION, DEC);
Serial.print(" usec, ");
Serial.print(pulses[i][1] * RESOLUTION, DEC);
Serial.println(" usec");
}
}
// print it in a 'array' format
// print it in a 'array' format
Serial.println("// ON, OFF (in 10's of microseconds)");
Serial.println("// ON, OFF (in 10's of microseconds)");
for (uint8_t i = 0; i < currentpulse-1; i++) {
for (uint8_t i = 0; i < currentpulse-1; i++) {
Serial.print("\t"); // tab
Serial.print(pulses[i][1] * RESOLUTION / 10, DEC);
Serial.print(", ");
Serial.print(pulses[i+1][0] * RESOLUTION / 10, DEC);
Serial.println(",");
}
}
Serial.print("\t"); // tab
Serial.print("\t"); // tab
Serial.print(pulses[currentpulse-1][1] * RESOLUTION / 10, DEC);
Serial.print(pulses[currentpulse-1][1] * RESOLUTION / 10, DEC);
Serial.print(", 0};");
Serial.print(", 0};");
}
</nowiki>
</nowiki>
Le nouveau croquis téléversé sur notre Arduino, pressons le bouton "Jouer" de la télécommande et voyons le résutlat que nous allons obtenir:
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int IRsignal[] = { // ON, OFF (in 10's of microseconds)
912, 438,
912, 438,
68, 48,
68, 48,
66, 3012,
66, 3012,
908, 212,
908, 212,
68, 0};
68, 0 };
</nowiki>
</nowiki>
Nous allons essayer de détecter ce code. Essayons de démarrer un nouveau croquis appelé IR Commander ([http://github.com/adafruit/IR-Commander la version finale du code est disponible sur le GitHub d'AdaFruit]) qui utilisera une partie de notre précédent croquis.
La première partie écourtera simplement le code Infrarouge et placera les temps d'impulsion dans le tableau pulses[]. Il retournera le nombre d'impulsions détecté comme valeur de retour.
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int listenForIR(void) {
currentpulse = 0;
while (1) {
uint16_t highpulse, lowpulse; // temporary storage timing
uint16_t highpulse, lowpulse; // temporary storage timing
highpulse = lowpulse = 0; // start out with no pulse length
highpulse = lowpulse = 0; // start out with no pulse length
// while (digitalRead(IRpin)) { // this is too slow!
// while (digitalRead(IRpin)) { // this is too slow!
while (IRpin_PIN & (1 << IRpin)) {
while (IRpin_PIN & (1 << IRpin)) {
// pin is still HIGH
// count off another few microseconds
highpulse++;
delayMicroseconds(RESOLUTION);
// If the pulse is too long, we 'timed out' - either nothing
// was received or the code is finished, so print what
// we've grabbed so far, and then reset
if ((highpulse >= MAXPULSE) && (currentpulse != 0)) {
return currentpulse;
}
}
}
// we didn't time out so lets stash the reading
// we didn't time out so lets stash the reading
// same as above
// same as above
while (! (IRpin_PIN & _BV(IRpin))) {
while (! (IRpin_PIN & _BV(IRpin))) {
// pin is still LOW
lowpulse++;
delayMicroseconds(RESOLUTION);
if ((lowpulse >= MAXPULSE) && (currentpulse != 0)) {
return currentpulse;
}
}
}
pulses[currentpulse][1] = lowpulse;
pulses[currentpulse][1] = lowpulse;
currentpulse++;
currentpulse++;
}
}
}
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