You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
74 lines
2.1 KiB
74 lines
2.1 KiB
// Plays a RAW (16-bit signed) PCM audio file at slower or faster rate
|
|
// this example requires an uSD-card inserted to teensy 3.6 with a file called DEMO.RAW
|
|
#include <Arduino.h>
|
|
#include <Audio.h>
|
|
#include <SD.h>
|
|
#include <TeensyVariablePlayback.h>
|
|
|
|
// GUItool: begin automatically generated code
|
|
AudioPlaySdResmp playSdRaw1; //xy=324,457
|
|
AudioOutputI2S i2s2; //xy=840.8571472167969,445.5714416503906
|
|
AudioConnection patchCord1(playSdRaw1, 0, i2s2, 0);
|
|
AudioConnection patchCord2(playSdRaw1, 0, i2s2, 1);
|
|
AudioControlSGTL5000 audioShield;
|
|
// GUItool: end automatically generated code
|
|
|
|
#define A14 10
|
|
|
|
const char* _filename = "DEMO.RAW";
|
|
const int analogInPin = A14;
|
|
unsigned long lastSamplePlayed = 0;
|
|
|
|
double getPlaybackRate(int16_t analog) { //analog: 0..1023
|
|
return (analog - 512.0) / 512.0;
|
|
}
|
|
|
|
void setup() {
|
|
analogReference(0);
|
|
pinMode(analogInPin, INPUT_DISABLE); // i.e. Analog
|
|
|
|
Serial.begin(57600);
|
|
|
|
if (!(SD.begin(BUILTIN_SDCARD))) {
|
|
// stop here if no SD card, but print a message
|
|
while (1) {
|
|
Serial.println("Unable to access the SD card");
|
|
delay(500);
|
|
}
|
|
}
|
|
audioShield.enable();
|
|
audioShield.volume(0.5);
|
|
|
|
playSdRaw1.enableInterpolation(true);
|
|
int newsensorValue = analogRead(analogInPin);
|
|
playSdRaw1.setPlaybackRate(getPlaybackRate(newsensorValue));
|
|
|
|
AudioMemory(24);
|
|
}
|
|
|
|
void loop() {
|
|
|
|
int newsensorValue = analogRead(analogInPin);
|
|
playSdRaw1.setPlaybackRate(getPlaybackRate(newsensorValue));
|
|
|
|
unsigned currentMillis = millis();
|
|
if (currentMillis > lastSamplePlayed + 500) {
|
|
if (!playSdRaw1.isPlaying()) {
|
|
playSdRaw1.playRaw(_filename, 1);
|
|
lastSamplePlayed = currentMillis;
|
|
|
|
Serial.print("Memory: ");
|
|
Serial.print(AudioMemoryUsage());
|
|
Serial.print(",");
|
|
Serial.print(AudioMemoryUsageMax());
|
|
Serial.println();
|
|
}
|
|
}
|
|
delay(10);
|
|
}
|
|
|
|
|
|
namespace std {
|
|
void __throw_bad_function_call() {}
|
|
void __throw_length_error(char const*) {}
|
|
} |