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Код: Выделить всё

/* Dmitry OSIPOV. http://www.youtube.com/user/d36073?feature=watch
  Arduino Audio Recorder V.1-20160524.
  ----------------------------------------------------
   Arduino Projects: Digital Audio Recorder.
  http://apcmag.com/arduino-projects-digital-audio-recorder.htm/
  ----------------------------------------------------
  SD-карту лучше класс 10 и выше.
  Питание от батареи или аккумулятора.
  Микрофон подключить к pin (A5).
  ----------------------------------------------------
  Download - sketch "Arduino Audio Recorder V.1-20160524"
  Библиотеку - SdFat.
  Фото.
  https://yadi.sk/d/zqi8-L5xruhFq
  + sketch оставлю в комментарии - под видео.
  ----------------------------------------------------
*/
#include <LiquidCrystal_I2C.h>
#include <SdFat.h> // https://yadi.sk/d/zqi8-L5xruhFq
//#include <EEPROM.h>

#include <RTClib.h>

#define cbi(sfr, bit) (_SFR_BYTE(sfr) &= ~_BV(bit))
#define sbi(sfr, bit) (_SFR_BYTE(sfr) |= _BV(bit))

SdFat sd;
SdFile rec;
RTC_DS1307 rtc;
LiquidCrystal_I2C lcd(0x27,20,4);  // set the LCD address to 0x27 for a 16 chars and 2 line display
const int chipSelect = 4; /* Поменял на 10-pln */
unsigned long fileSize = 0L;
unsigned long waveChunk = 16;
unsigned int waveType = 1;
unsigned int numChannels = 1;
unsigned long sampleRate = 22050;
unsigned long bytesPerSec = 22050;
unsigned int blockAlign = 1;
unsigned int bitsPerSample = 8;
unsigned long dataSize = 0L;
unsigned long recByteCount = 0L;
unsigned long recByteSaved = 0L;
const int btnStart = 6;
const int btnStop = 5;
const int ledStart = 2;
const int ledStop = 3;
int recPressed = 0;
int stopPressed = 0;
unsigned long oldTime = 0L;
unsigned long newTime = 0L;
byte buf00[64]; // buffer array 1
byte buf01[64]; // buffer array 2
byte byte1, byte2, byte3, byte4;
unsigned int bufByteCount;
byte bufWrite;

unsigned long timer1;
int timer1on = 0;
//----------------------------------------------------
//char NameRecord[4]; /* Имя нового - записываемого файла на SD-карту. */
//int RecordNumber; /* Номер записи - храним в EEPROM. в диапазоне 0..255. */
//char filename[12]; 

char filename[22];
char foldername[10];

unsigned long timerLCL;
int timerLCLon=0;

unsigned long timerRS;
int timerRSon=0;

int SrV,rsValue, procSrV, SrVmid;

char buffer[16] ;
void setup() { // THIS RUNS ONCE
//
  lcd.init();
   lcd.backlight();
  //lcd.setCursor(3,0);
  //lcd.print("Hello, world!");
 

//
  
  rtc.begin();
//EEPROM.put(0, 20000);
  Setup_timer2();
  Setup_ADC();

  pinMode(10, OUTPUT);
  pinMode(ledStart, OUTPUT);
  pinMode(ledStop, OUTPUT);
  pinMode(btnStop, INPUT_PULLUP);
  pinMode(btnStart, INPUT_PULLUP);

  if (sd.begin(chipSelect, SPI_FULL_SPEED)) { // initialise card on SPI to 8MHz SPI bus speed
    for (int dloop = 0; dloop < 4; dloop++) {
      digitalWrite(ledStart, !digitalRead(ledStart));
      delay(100);
    }
  } else { 
      lcd.setCursor(0,1);
      lcd.print("SD Card not found");
    // if error, flash LED twice per second, until reset
    while (1) {
      digitalWrite(ledStart, !digitalRead(ledStart));
      delay(500);
    }
  }

}

void loop() { // THIS RUNS LOTS!
////////////// НАЧИНАЕМ С ОБРАБОТКИ ВХОДА А0 ////////////////////////
  
// Каждые 100 мс мы накапливаем значения (для усреднения)
 if (timerRSon==0){   // запустим таймер для отображения часов
  timerRS=millis();  // включим миллис
  timerRSon=1;
  
 }
 if (timerRSon==1){
  if (millis()-timerRS>50)
    {
      //rsValue=analogRead(A0);
      SrV=SrV+rsValue; 
      timerRSon=0;
   }
 }
// Каждые 1000 мс мы отображаем усредненное значение
  if (timerLCLon==0){   // запустим таймер для отображения часов
  timerLCL=millis();  // включим миллис
  timerLCLon=1;
 }
 if (timerLCLon==1){
  if (millis()-timerLCL>500)
    {
      lcd.setCursor(0,0);
      
      SrVmid=SrV/10;
      if (SrVmid<125) SrVmid=125;    // меньше 125 - это 0%
      procSrV=((SrVmid-125)*100)/194;  //в % макс -318(320), мин 125, 320-125=195   
      sprintf(buffer, "Power:%03i (%02i)",SrV/10,procSrV); 
      lcd.print(buffer);
      //Show_time();
      timerLCLon=0;
      
      SrV=0;
      ///////////////////////
   }
 }

 ////////////// ЗДЕСЬ УЖЕ ОБРАБОТКА ВХОДА А1 ////////////////////////
 if (digitalRead(btnStart) == LOW && recPressed == 0) {
    
    DateTime now = rtc.now();
    String strFile,strFolder;  //declaring string.
    strFolder=String(now.timestamp(DateTime::TIMESTAMP_DATE));
    strFolder.replace("-", "");
    strFolder.toCharArray(foldername, sizeof(foldername));
    sd.mkdir(foldername);  // Создаю директорию - пробовал без этого - никак
    strFolder.concat("/");
    strFile=String(now.timestamp(DateTime::TIMESTAMP_TIME));
    strFile.replace(":", "-");
    strFile.concat(".wav");
    strFolder.concat(strFile);
    strFolder.toCharArray(filename, sizeof(filename));
    
    StartRec(); // launch StartRec method
    timer1on = 0;
  }
  else if (digitalRead(btnStart) == HIGH && recPressed == 1 && timer1on == 0)
    {
      timer1 = millis();
      timer1on = 1;
    }
    else if (digitalRead(btnStart) == LOW && recPressed == 1 && timer1on == 1) {
    timer1on = 0; 
    }
   
  else if (digitalRead(btnStart) == HIGH && recPressed == 1 && timer1on == 1 && (millis() - timer1) > 2000)
  {
    StopRec(); // launch StopRec method
    
    /*         Поэтому (Делаем программную перезагрузку). */
    ((void (*)())0x0000)(); /* Делаем программную перезагрузку - Arduino */
  }
 
  if (recByteCount % 128 == 64 && recPressed == 1) {
    rec.write(buf00, 64);  // save buf01 to card
    recByteSaved += 64;
  }
  if (recByteCount % 128 == 0 && recPressed == 1) {
    rec.write(buf01, 64);  // save buf02 to card
    recByteSaved += 64;
  }
}

void StartRec() { // begin recording process

  digitalWrite(ledStart, HIGH);
  digitalWrite(ledStop, LOW);
  recByteCount = 0;
  recByteSaved = 0;
  recPressed = 1; // recording button has been pressed
  stopPressed = 0;
  writeWavHeader();
  sbi (TIMSK2, OCIE2A); // enable timer interrupt, start grabbing audio

}

void StopRec() { // stop recording process, update WAV header, close file

  cbi (TIMSK2, OCIE2A); // disable timer interrupt
  writeOutHeader();
  digitalWrite(ledStart, LOW); // turn off recording LED
  digitalWrite(ledStop, HIGH); // light stop LED
  recPressed = 0;

}

void writeOutHeader() { // update WAV header with final filesize/datasize

  rec.seekSet(4);
  byte1 = recByteSaved & 0xff;
  byte2 = (recByteSaved >> 8) & 0xff;
  byte3 = (recByteSaved >> 16) & 0xff;
  byte4 = (recByteSaved >> 24) & 0xff;
  rec.write(byte1);  rec.write(byte2);  rec.write(byte3);  rec.write(byte4);
  rec.seekSet(40);
  rec.write(byte1);  rec.write(byte2);  rec.write(byte3);  rec.write(byte4);
  rec.close();

}

void dateTime(uint16_t* date, uint16_t* time) {
  DateTime now = rtc.now();

  // return date using FAT_DATE macro to format fields
  *date = FAT_DATE(now.year(), now.month(), now.day());

  // return time using FAT_TIME macro to format fields
  *time = FAT_TIME(now.hour(), now.minute(), now.second());
}

void writeWavHeader() { // write out original WAV header to file

  recByteSaved = 0;
  
   SdFile::dateTimeCallback(dateTime);
   ////
  
   ////
   rec.open(filename, O_CREAT | O_TRUNC | O_RDWR); /* Имя нового - записываемого файла на SD-карту. */
   
  rec.write("RIFF");
  byte1 = fileSize & 0xff;
  byte2 = (fileSize >> 8) & 0xff;
  byte3 = (fileSize >> 16) & 0xff;
  byte4 = (fileSize >> 24) & 0xff;
  rec.write(byte1);  rec.write(byte2);  rec.write(byte3);  rec.write(byte4);
  rec.write("WAVE");
  rec.write("fmt ");
  byte1 = waveChunk & 0xff;
  byte2 = (waveChunk >> 8) & 0xff;
  byte3 = (waveChunk >> 16) & 0xff;
  byte4 = (waveChunk >> 24) & 0xff;
  rec.write(byte1);  rec.write(byte2);  rec.write(byte3);  rec.write(byte4);
  byte1 = waveType & 0xff;
  byte2 = (waveType >> 8) & 0xff;
  rec.write(byte1);  rec.write(byte2);
  byte1 = numChannels & 0xff;
  byte2 = (numChannels >> 8) & 0xff;
  rec.write(byte1);  rec.write(byte2);
  byte1 = sampleRate & 0xff;
  byte2 = (sampleRate >> 8) & 0xff;
  byte3 = (sampleRate >> 16) & 0xff;
  byte4 = (sampleRate >> 24) & 0xff;
  rec.write(byte1);  rec.write(byte2);  rec.write(byte3);  rec.write(byte4);
  byte1 = bytesPerSec & 0xff;
  byte2 = (bytesPerSec >> 8) & 0xff;
  byte3 = (bytesPerSec >> 16) & 0xff;
  byte4 = (bytesPerSec >> 24) & 0xff;
  rec.write(byte1);  rec.write(byte2);  rec.write(byte3);  rec.write(byte4);
  byte1 = blockAlign & 0xff;
  byte2 = (blockAlign >> 8) & 0xff;
  rec.write(byte1);  rec.write(byte2);
  byte1 = bitsPerSample & 0xff;
  byte2 = (bitsPerSample >> 8) & 0xff;
  rec.write(byte1);  rec.write(byte2);
  rec.write("data");
  byte1 = dataSize & 0xff;
  byte2 = (dataSize >> 8) & 0xff;
  byte3 = (dataSize >> 16) & 0xff;
  byte4 = (dataSize >> 24) & 0xff;
  rec.write(byte1);  rec.write(byte2);  rec.write(byte3);  rec.write(byte4);

}

void Setup_timer2() {

  TCCR2B = _BV(CS21);  // Timer2 Clock Prescaler to : 8
  TCCR2A = _BV(WGM21); // Interupt frequency  = 16MHz / (8 x 90 + 1) = 22191Hz
  OCR2A = 90; // Compare Match register set to 90

}

void Show_time(){    
  DateTime now = rtc.now();
      lcd.setCursor(1, 1);
      lcd.print(now.hour());
      lcd.print(":");
      lcd.print(now.minute());
      lcd.print(":");     
      lcd.print(now.second());
       }

void Setup_ADC() {

  ADMUX = 0x61; // set ADC to read pin A5, ADLAR to 1 (left adjust)
  cbi(ADCSRA, ADPS2); // set prescaler to 8 / ADC clock = 2MHz
  sbi(ADCSRA, ADPS1);
  sbi(ADCSRA, ADPS0);
}

ISR(TIMER2_COMPA_vect) {

 

  sbi(ADCSRA, ADSC); // start ADC sample
  while (bit_is_set(ADCSRA, ADSC)); // wait until ADSC bit goes low = new sample ready
  recByteCount++; // increment sample counter
  bufByteCount++;
  if (bufByteCount == 64 && bufWrite == 0) {
    bufByteCount = 0;
    bufWrite = 1;
  } else if (bufByteCount == 64 & bufWrite == 1) {
    bufByteCount = 0;
    bufWrite = 0;
  }

  if (bufWrite == 0) {
    buf00[bufByteCount] = ADCH;
  }
  if (bufWrite == 1) {
    buf01[bufByteCount] = ADCH;
  }


  //  if (recByteCount % 128 < 64) { // determine which buffer to store sample into
  //    buf01[recByteCount % 64] = ADCH;
  //  } else {
  //    buf02[recByteCount % 64 ] = ADCH;
  //  }

}

Код: Выделить всё

// Voltage Reference: AVCC pin
#define ADC_VREF_TYPE ((0<<REFS1) | (1<<REFS0) | (1<<ADLAR))

volatile uint8_t sum_adc;

// ADC interrupt service routine
ISR(ADC_vect) 
{
static uint8_t count = 0;
static uint8_t temp=0;
static uint32_t temp_adc=0;

	if(ADMUX & (1<<MUX0)){
		temp = ADCH;		
		rec.write(temp, 1);  // save to card
		ADMUX = ADC_VREF_TYPE | (0<<MUX0);//set ch 0 
	}else{
		temp_adc += ADCH;
		ADMUX = ADC_VREF_TYPE | (1<<MUX0);//set ch 1
	}

	if (++count > 127)  { 
		count = 0;
		sum_adc = temp_adc>>6; 
		temp=0; 
		temp_adc=0;
	}
}

void StartRec() { // begin recording process
  digitalWrite(ledStart, HIGH);
  digitalWrite(ledStop, LOW);
  recByteCount = 0;
  recByteSaved = 0;
  recPressed = 1; // recording button has been pressed
  stopPressed = 0;
  writeWavHeader();
  //sbi (TIMSK2, OCIE2A); // enable timer interrupt, start grabbing audio
  
  ADCSRA |= (1<<ADEN);
}

void StopRec() { // stop recording process, update WAV header, close file
  //cbi (TIMSK2, OCIE2A); // disable timer interrupt

  ADCSRA &= ~(1<<ADEN);

  writeOutHeader();
  digitalWrite(ledStart, LOW); // turn off recording LED
  digitalWrite(ledStop, HIGH); // light stop LED
  recPressed = 0;
}

void Setup_timer2() {
  //TCCR2B = _BV(CS21);  // Timer2 Clock Prescaler to : 8
  //TCCR2A = _BV(WGM21); // Interupt frequency  = 16MHz / (8 x 90 + 1) = 22191Hz
  //OCR2A = 90; // Compare Match register set to 90
}

void Setup_ADC() {  
// ADC initialization
DIDR0=(0<<ADC5D) | (0<<ADC4D) | (0<<ADC3D) | (0<<ADC2D) | (0<<ADC1D) | (0<<ADC0D);
ADMUX= (1<<MUX0) | ADC_VREF_TYPE;

ADCSRA=(0<<ADEN) | (1<<ADSC) | (1<<ADATE) | (0<<ADIF) | (1<<ADIE) | (1<<ADPS2) | (0<<ADPS1) | (1<<ADPS0);	// 500kHz
sampleRate = 20000; bytesPerSec = 20000;
//ADCSRA=(0<<ADEN) | (1<<ADSC) | (1<<ADATE) | (0<<ADIF) | (1<<ADIE) | (1<<ADPS2) | (1<<ADPS1) | (0<<ADPS0);	// 250kHz
//sampleRate = 9803; bytesPerSec = 9803;
//ADCSRA=(0<<ADEN) | (1<<ADSC) | (1<<ADATE) | (0<<ADIF) | (1<<ADIE) | (1<<ADPS2) | (1<<ADPS1) | (1<<ADPS0);	// 125kHz
//sampleRate = 4807; bytesPerSec = 4807;
ADCSRB=(0<<ADTS2) | (0<<ADTS1) | (0<<ADTS0);
}