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Код: Выделить всё

// C++ code to convert BCD to its
// decimal number(base 10).
 
// Including Header Files
#include <bits/stdc++.h>
using namespace std;
 
// Function to convert BCD to Decimal
int bcdToDecimal(string s)
{
    int len = s.length(),
        check = 0, check0 = 0;
    int num = 0, sum = 0,
        mul = 1, rev = 0;
 
    // Iterating through the bits backwards
    for (int i = len - 1; i >= 0; i--) {
 
        // Forming the equivalent
        // digit(0 to 9)
        // from the group of 4.
        sum += (s[i] - '0') * mul;
        mul *= 2;
        check++;
 
        // Reinitialize all variables
        // and compute the number.
        if (check == 4 || i == 0) {
            if (sum == 0 && check0 == 0) {
                num = 1;
                check0 = 1;
            }
            else {
                // update the answer
                num = num * 10 + sum;
            }
 
            check = 0;
            sum = 0;
            mul = 1;
        }
    }
 
    // Reverse the number formed.
    while (num > 0) {
        rev = rev * 10 + (num % 10);
        num /= 10;
    }
 
    if (check0 == 1)
        return rev - 1;
 
    return rev;
}
 
// Driver Code
int main()
{
    string s = "100000101000";
 
    // Function Call
    cout << bcdToDecimal(s);
 
    return 0;
}

Код: Выделить всё

// Arduino Audio Recorder


#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;

#define ADC_VREF_TYPE ((0<<REFS1) | (1<<REFS0) | (1<<ADLAR))

volatile uint8_t sum_adc;

volatile bool n0=0, n1=0;

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[256]; // buffer array 1
byte buf01[256]; // 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];

void setup() { // THIS RUNS ONCE
  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 { // if error, flash LED twice per second, until reset
    while (1) {
      digitalWrite(ledStart, !digitalRead(ledStart));
      delay(500);
    }
  }

}

void loop() { // THIS RUNS LOTS!

 if (digitalRead(btnStart) == LOW && recPressed == 0) {
    /* Записываем в RecordNumber, значение из ячейки №0 EEPROM, и прибавляем 1. */
    /*RecordNumber = EEPROM.read(0) + 1;*/
     if (RecordNumber == 32767)RecordNumber = 0;
/*RecordNumber==RecordNumber+1;*/
       EEPROM.get(0,RecordNumber) ;
       /* Записываем в ячейку №0 EEPROM, увеличенное значение RecordNumber. */
    /*EEPROM.write(0, RecordNumber);*/
    EEPROM.put(0, RecordNumber+1);
   String str;  //declaring string.
    //
   str = String(RecordNumber); //converting integer into a string.
   while (str.length() < 6)
    {
    str = "0" + str;
      }
   str.concat(".wav");
   str.toCharArray(filename, sizeof(filename));
    /*str.toCharArray(NameRecord, 4); //passing the value of the string to the character array.*/
    /*SdFile::dateTimeCallback(dateTime);*/
    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 % 512 == 256 && recPressed == 1) {
  //  rec.write(buf00, 256);  // save buf01 to card
  //  recByteSaved += 256;
  //}
  //if (recByteCount % 512 == 0 && recPressed == 1) {
  //  rec.write(buf01, 256);  // save buf02 to card
  //  recByteSaved += 256;
  //}

   if (n0==0 && n1 == 1) {
      rec.write(buf00, 256);  // save buf01 to card
      recByteSaved += 256;
      n0=0; n1=0;
    }
    if (n0==1 && n1 == 0) {
      rec.write(buf01, 256);  // save buf02 to card
      recByteSaved += 256;
      n0=0; n1=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
  //writeOutHeader();
  //digitalWrite(ledStart, LOW); // turn off recording LED
  //digitalWrite(ledStop, HIGH); // light stop LED
  //recPressed = 0;

    //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 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;
  // rec.open("rec00000.wav", O_CREAT | O_TRUNC | O_RDWR);
  /*rec.open(NameRecord, O_CREAT | O_TRUNC | O_RDWR); /* Имя нового - записываемого файла на SD-карту. */
  //DateTime now = rtc.now();
   SdFile::dateTimeCallback(dateTime);
   rec.open(filename, O_CREAT | O_TRUNC | O_RDWR); /* Имя нового - записываемого файла на SD-карту. */
   //rec.timestamp(T_CREATE, now.year(), now.month(), now.day(), now.hour(), now.minute(), now.second());
  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 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);

// 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;
sampleRate = 19600; bytesPerSec = 19600;
//ADCSRA=(0<<ADEN) | (1<<ADSC) | (1<<ADATE) | (0<<ADIF) | (1<<ADIE) | (1<<ADPS2) | (1<<ADPS1) | (0<<ADPS0); // 250kHz
//sampleRate = 9800; bytesPerSec = 9800;
//sampleRate = 19230; bytesPerSec = 19230;
//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);
}

// ADC interrupt service routine
ISR(ADC_vect) 
{
static uint8_t count = 0;
static uint8_t temp=0;
static uint32_t temp_adc=0;
static uint16_t count_buf = 0;

  if(ADMUX & (1<<MUX0)){
    temp = ADCH;
    ADMUX = ADC_VREF_TYPE | (0<<MUX0);//set ch 0     
    if(count_buf < 256) {
    buf00[count_buf] = temp; 
    } else buf01[count_buf - 256] = temp;

    if(count_buf == 255) { 
      n0=0; n1=1; 
    }
      
    if(++count_buf > 511) { 
      count_buf=0; n0=1; n1=0; 
    }
  }else{
    temp_adc += ADCH;
    ADMUX = ADC_VREF_TYPE | (1<<MUX0);//set ch 1
    if (++count > ((127)))  { 
    count = 0;
    sum_adc = temp_adc>>7; 
    temp_adc=0;
  }
  }


}

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 == 256 && bufWrite == 0) {
    bufByteCount = 0;
    bufWrite = 1;
  } else if (bufByteCount == 256 & bufWrite == 1) {
    bufByteCount = 0;
    bufWrite = 0;
  }

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

}