Ronnie Rock
Member
Why am I getting these errors when I am trying to compile my sketch?
Code:
/**
Audio Guestbook, Copyright (c) 2022 Playful Technology
Tested using a Teensy 4.0 with Teensy Audio Shield, although should work
with minor modifications on other similar hardware
When handset is lifted, a pre-recorded greeting message is played, followed by a tone.
Then, recording starts, and continues until the handset is replaced.
Files are saved on SD card as 44.1kHz, 16-bit, mono signed integer RAW audio format
--> changed this to WAV recording, DD4WH 2022_07_31
--> added MTP support, which enables copying WAV files from the SD card via the USB connection, DD4WH 2022_08_01
Playback button allows all messages currently saved on SD card through earpiece
Frank DD4WH, August 1st 2022
for a DBP 611 telephone (closed contact when handheld is lifted) & with recording to WAV file
contact for switch button 0 is closed when handheld is lifted
GNU GPL v3.0 license
*/
#include <Bounce.h>
#include <Audio.h>
#include <Wire.h>
#include <SPI.h>
#include <SD.h>
#include <TimeLib.h>
#include <MTP_Teensy.h>
#include "play_sd_wav.h" // local copy with fixes
// DEFINES
// Define pins used by Teensy Audio Shield
-38,12 +39,14
#define HOOK_PIN 0
#define PLAYBACK_BUTTON_PIN 1
#define noINSTRUMENT_SD_WRITE
// GLOBALS
// Audio initialisation code can be generated using the GUI interface at [url]https://www.pjrc.com/teensy/gui/[/url]
// Inputs
AudioSynthWaveform waveform1; // To create the "beep" sfx
AudioInputI2S i2s2; // I2S input from microphone on audio shield
AudioPlaySdWav playWav1; // Play 44.1kHz 16-bit PCM greeting WAV file
AudioPlaySdWavX playWav1; // Play 44.1kHz 16-bit PCM greeting WAV file
AudioRecordQueue queue1; // Creating an audio buffer in memory before saving to SD
AudioMixer4 mixer; // Allows merging several inputs to same output
AudioOutputI2S i2s1; // I2S interface to Speaker/Line Out on Audio shield
@@ -69,6 +72,8 @@ Mode mode = Mode::Initialising;
float beep_volume = 0.04f; // not too loud :-)
uint32_t MTPcheckInterval; // default value of device check interval [ms]
// variables for writing to WAV file
unsigned long ChunkSize = 0L;
unsigned long Subchunk1Size = 16;
@@ -91,6 +96,7 @@ void setup() {
// wait for serial port to connect.
}
Serial.println("Serial set up correctly");
Serial.printf("Audio block set to %d samples\n",AUDIO_BLOCK_SAMPLES);
print_mode();
// Configure the input pins
pinMode(HOOK_PIN, INPUT_PULLUP);
@@ -129,13 +135,15 @@ void setup() {
}
else Serial.println("SD card correctly initialized");
// mandatory to begin the MTP session.
MTP.begin();
// Add SD Card
// MTP.addFilesystem(SD, "SD Card");
MTP.addFilesystem(SD, "Kais Audio guestbook"); // choose a nice name for the SD card volume to appear in your file explorer
Serial.println("Added SD card via MTP");
MTPcheckInterval = MTP.storage()->get_DeltaDeviceCheckTimeMS();
// Value in dB
// sgtl5000_1.micGain(15);
@@ -226,10 +234,36 @@ void loop() {
case Mode::Initialising: // to make compiler happy
break;
}
MTP.loop(); //This is mandatory to be placed in the loop code.
MTP.loop(); // This is mandatory to be placed in the loop code.
}
void setMTPdeviceChecks(bool nable)
{
if (nable)
{
MTP.storage()->set_DeltaDeviceCheckTimeMS(MTPcheckInterval);
Serial.print("En");
}
else
{
MTP.storage()->set_DeltaDeviceCheckTimeMS((uint32_t) -1);
Serial.print("Dis");
}
Serial.println("abled MTP storage device checks");
}
#if defined(INSTRUMENT_SD_WRITE)
static uint32_t worstSDwrite, printNext;
#endif // defined(INSTRUMENT_SD_WRITE)
void startRecording() {
setMTPdeviceChecks(false); // disable MTP device checks while recording
#if defined(INSTRUMENT_SD_WRITE)
worstSDwrite = 0;
printNext = 0;
#endif // defined(INSTRUMENT_SD_WRITE)
// Find the first available file number
// for (uint8_t i=0; i<9999; i++) { // BUGFIX uint8_t overflows if it reaches 255
for (uint16_t i=0; i<9999; i++) {
@@ -255,21 +289,39 @@ void startRecording() {
}
void continueRecording() {
#if defined(INSTRUMENT_SD_WRITE)
uint32_t started = micros();
#endif // defined(INSTRUMENT_SD_WRITE)
#define NBLOX 16
// Check if there is data in the queue
if (queue1.available() >= 2) {
byte buffer[512];
if (queue1.available() >= NBLOX) {
byte buffer[NBLOX*AUDIO_BLOCK_SAMPLES*sizeof(int16_t)];
// Fetch 2 blocks from the audio library and copy
// into a 512 byte buffer. The Arduino SD library
// is most efficient when full 512 byte sector size
// writes are used.
memcpy(buffer, queue1.readBuffer(), 256);
queue1.freeBuffer();
memcpy(buffer+256, queue1.readBuffer(), 256);
queue1.freeBuffer();
for (int i=0;i<NBLOX;i++)
{
memcpy(buffer+i*AUDIO_BLOCK_SAMPLES*sizeof(int16_t), queue1.readBuffer(), AUDIO_BLOCK_SAMPLES*sizeof(int16_t));
queue1.freeBuffer();
}
// Write all 512 bytes to the SD card
frec.write(buffer, 512);
recByteSaved += 512;
frec.write(buffer, sizeof buffer);
recByteSaved += sizeof buffer;
}
#if defined(INSTRUMENT_SD_WRITE)
started = micros() - started;
if (started > worstSDwrite)
worstSDwrite = started;
if (millis() >= printNext)
{
Serial.printf("Worst write took %luus\n",worstSDwrite);
worstSDwrite = 0;
printNext = millis()+250;
}
#endif // defined(INSTRUMENT_SD_WRITE)
}
void stopRecording() {
@@ -278,15 +330,16 @@ void stopRecording() {
// Flush all existing remaining data from the queue
while (queue1.available() > 0) {
// Save to open file
frec.write((byte*)queue1.readBuffer(), 256);
frec.write((byte*)queue1.readBuffer(), AUDIO_BLOCK_SAMPLES*sizeof(int16_t));
queue1.freeBuffer();
recByteSaved += 256;
recByteSaved += AUDIO_BLOCK_SAMPLES*sizeof(int16_t);
}
writeOutHeader();
// Close the file
frec.close();
Serial.println("Closed file");
mode = Mode::Ready; print_mode();
setMTPdeviceChecks(true); // enable MTP device checks, recording is finished
}
@@ -412,8 +465,8 @@ void writeOutHeader() { // update WAV header with final filesize/datasize
// NumSamples = (recByteSaved*8)/bitsPerSample/numChannels;
// Subchunk2Size = NumSamples*numChannels*bitsPerSample/8; // number of samples x number of channels x number of bytes per sample
Subchunk2Size = recByteSaved;
ChunkSize = Subchunk2Size + 36;
Subchunk2Size = recByteSaved - 42; // because we didn't make space for the header to start with! Lose 21 samples...
ChunkSize = Subchunk2Size + 34; // was 36;
frec.seek(0);
frec.write("RIFF");
byte1 = ChunkSize & 0xff;
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