Using a Teensy 4 and Teensy 4 audio shield - I just completed the Teensy Audio Tutorial & Workshop.
Now I'm attempting to use the peak analysis data to pulse an LED. I modified the TFT Display tutorial script and mapped the peak1.read() value to 0, 255 and am sending that to the LED's pin=10 as analogWrite (code below)
But when I add the analog.write to my code and upload it, my teensy just produces a tone and freezes... What am I doing improperly here? And what is the best way to channel this data for LED intensity?
I feel like I'm very close, but can't figure out this last step... Any guidance would be a great help!
Now I'm attempting to use the peak analysis data to pulse an LED. I modified the TFT Display tutorial script and mapped the peak1.read() value to 0, 255 and am sending that to the LED's pin=10 as analogWrite (code below)
But when I add the analog.write to my code and upload it, my teensy just produces a tone and freezes... What am I doing improperly here? And what is the best way to channel this data for LED intensity?
I feel like I'm very close, but can't figure out this last step... Any guidance would be a great help!
Code:
#include <Audio.h>
#include <Wire.h>
#include <SPI.h>
#include <SD.h>
#include <SerialFlash.h>
// GUItool: begin automatically generated code
AudioPlaySdWav playSdWav1; //xy=199,194
AudioAnalyzePeak peak1; //xy=496,241
AudioAnalyzePeak peak2; //xy=501,282
AudioOutputI2S i2s1; //xy=573,197
AudioConnection patchCord1(playSdWav1, 0, i2s1, 0);
AudioConnection patchCord2(playSdWav1, 0, peak1, 0);
AudioConnection patchCord3(playSdWav1, 1, i2s1, 1);
AudioConnection patchCord4(playSdWav1, 1, peak2, 0);
AudioControlSGTL5000 sgtl5000_1; //xy=503,351
// GUItool: end automatically generated code
// Use these with the Teensy Audio Shield
#define SDCARD_CS_PIN 10
#define SDCARD_MOSI_PIN 7
#define SDCARD_SCK_PIN 14
//LED attached to pin 10
const int LEDPin = 10;
void setup() {
pinMode(LEDPin, OUTPUT);
Serial.begin(9600);
delay(500);
AudioMemory(10);
sgtl5000_1.enable();
sgtl5000_1.volume(0.2);
SPI.setMOSI(SDCARD_MOSI_PIN);
SPI.setSCK(SDCARD_SCK_PIN);
if (!(SD.begin(SDCARD_CS_PIN))) {
while (1) {
Serial.println("Unable to access the SD card");
delay(500);
}
}
delay(1000);
}
elapsedMillis msecs;
void loop() {
if (playSdWav1.isPlaying() == false) {
Serial.println("Start playing");
playSdWav1.play("SDTEST3.WAV");
delay(10); // wait for library to parse WAV info
}
if (msecs > 15) {
if (peak1.available() && peak2.available()) {
msecs = 0;
float leftNumber = peak1.read();
int LEDIntensity = map(leftNumber, 0, 1, 0, 255);
analogWrite(LEDPin, LEDIntensity);
Serial.print(LEDIntensity);
Serial.print(", ");
}
}
}
