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Bus digital "Musik" dengan antarmuka UART

gambar

Hai Geektimes! Pernahkah Anda bertanya-tanya bagaimana "sinyal listrik" terdengar di sepanjang jalur papan sirkuit tercetak antara sirkuit mikro, transistor, dioda, resistor, dan kapasitor? Salah satu varian dari sinyal seperti itu dalam elektronik modern adalah bus digital, dan salah satu antarmuka populer untuk bertukar data melalui bus adalah UART. Ini sering digunakan dalam mikrokontroler untuk berkomunikasi dengan komputer atau semacam periferal. Untuk mendapatkan suara di bus, sama sekali tidak perlu menghubungkan speaker dengan amplifier ke bus nyata dengan UART ohm, karena dapat disimulasikan dalam program. Apakah Anda tertarik dengan bunyi apa yang akhirnya Anda dapatkan, atau apakah Anda memerlukan program untuk bereksperimen sendiri? Lalu saya minta kucing.

Kami mendengarkan file di bus dengan UART


Suara apa yang akan dihasilkan jika Anda mentransfer file melalui UART ? Berikut adalah beberapa contoh yang diperoleh dengan parameter UART berikut:

  • Tingkat baud 115200
  • Bit 8 bit
  • Parity Bit: Tidak Ada
  • Stop Bit Length: 1

Sound of the game Stalker Shadow of Chernobyl (file XR_3DA.exe, di akhir trek, mulai pukul 2:36, ada melodi).

Suara teks dan kode artikel tentang synthesizer ucapan (artikel itu sendiri ada di sini ).

Seperti apa foto Lena?

gambar

Hasilnya hanya noise .

Suara buku "Entropi dan perkiraan deret waktu dalam teori sistem dinamik" dalam format pdf.

Suara firmware mikrokontroler seri Atmega untuk pemutar wav.

Untuk apa itu digunakan?


Secara teoritis, mungkin ada informasi seperti itu dalam bentuk teks, atau gambar, atau video, atau dalam bentuk program yang tidak hanya memiliki makna fungsional atau signifikansi estetika, tetapi juga bunyi "indah" dari bus digital, kemudian berubah menjadi semacam puisi "digital" . Anda juga dapat mendiversifikasi sampel untuk dubstep. Secara umum, menurut pendapat saya, mendengarkan suara bus digital sama menariknya dengan mendengarkan suara gelombang radio dalam gelombang pendek, secara umum, untuk seorang amatir.

Cara kerjanya atau sedikit tentang UART


Apa itu UART dapat dibaca di Wikipedia . UART sangat mudah disimulasikan dalam suatu program. Bahkan, Anda hanya perlu dapat membuat penurunan sinyal dari 0 ke 1 dan sebaliknya (dalam kasus file WAV dengan kapasitas bit 16 bit, ini adalah nilai dari - A ke + A , di mana A adalah amplitudo sinyal) dan merekamnya dalam file audio. Antarmuka UART berfungsi seperti ini: setelah bit mulai, yang logis "nol", Anda perlu mengatur level tergantung pada data yang disediakan, dari yang rendah ke yang tinggi. Berikutnya datang sedikit paritas yang tidak bisa Anda gunakan. Di akhir pesan ada stop bit (“unit” logis), yang panjangnya bisa berbeda. Contoh kode dapat ditemukan dalam kode sumber, yang ada di akhir artikel. Informasi lebih lanjut tentang UART dapat ditemukan di jaringan, banyak materi. UART dapat digunakan untuk keperluan lain, misalnya sebagai PWM, tetapi dalam kasus kami, ini berarti bahwa secara teoritis Anda bahkan dapat mentransfer sinyal suara penuh langsung ke speaker, seperti yang dilakukan pada pemain wav pada mikrokontroler. Namun, saya lebih suka menggunakannya sebagai generator berliku-liku. Frekuensi nada dan fase sinyal dapat disediakan dalam bentuk bit data, misalnya, 00001111 akan membuat berliku-liku yang periodenya akan sama dengan 10 periode waktu transmisi satu bit (karena dalam kasus ini ada juga bit mulai sama dengan 0 dan bit berhenti sama dengan 1). Karena bit mulai dan berhenti, tidak semua periode berliku dapat ditransmisikan, misalnya, dalam hal ini 01100110 , karena pada dasarnya kita akan mendengarkan urutan seperti itu di bus 0011001101 . Jika Anda menggunakan kecepatan transfer data yang tinggi, misalnya 115200 baud, masuk akal untuk membuat frekuensi suara yang dapat didengar dengan meregangkan periode meadras dengan beberapa byte.

...


Dengan menggunakan tautan ini, Anda dapat mengunduh program untuk mengonversi file menjadi suara bus UART . Ada juga versi menggunakan OpenAL untuk memutar suara selama operasi program, di sini adalah tautannya .

Kode sumber program disediakan di bawah ini:

File header SoundsDigitalBus.h
#ifndef SOUNDS_DIGITAL_BUS_H_INCLUDED #define SOUNDS_DIGITAL_BUS_H_INCLUDED #define SDB_WAV_FILE_NAME "sdb_output.wav" #define SDB_UART_BIT 8 #define SDB_UART_PARITY 0 #define SDB_UART_STOP_BIT 1 #define SDB_UART_BAUDRATE 9600 #define SDB_UART_BAUDRATE_MAX 921600 ///   ()   #define SDB_MAX_DATA 30000 ///    #define SDB_CANNEL 1 /// -  ()  #define SDB_BIT 16 ///    #define SDB_FREQUENCY 96000 ///     OpenAL #define OPENAL_NUM_OF_DYNBUF 32 ///  OpenAL #define SDB_OPENAL_BIT SDB_BIT #define SDB_OPENAL_CANNEL SDB_CANNEL #define SDB_OPENAL_FREQUENCY SDB_FREQUENCY #define SDB_OPENAL_FORMAT AL_FORMAT_MONO16 ///     #define SDB_BUFFER_MAX 4800 ///  OpenAL    ( ,   1) #define SDB_WITH_OPENAL 1 ///   ( ,   1) #define SDB_WITH_DEBUG_MODE 0 #if SDB_WITH_OPENAL == 1 //   OpenAL    #include <openal/al.h> #include <openal/alc.h> #endif #if SDB_WITH_DEBUG_MODE == 1 //    #include <stdio.h> #include <locale.h> #endif //    #include <stdio.h> //    #include <string.h> class sdb { private: #if SDB_WITH_OPENAL == 1 //   openAl    //   speesy ALCdevice* openAlDevice; ALCcontext* openAlContext; ALuint openAlSource; signed char openAlnBuf; //  #endif // ---------------------------------------- //    WAV  FILE *fpSave; unsigned short wavBlockAlign; unsigned long wavSubchunk2Size; unsigned long wavChunkSize; unsigned char wavLenDataType; // ---------------------------------------- //      double dTime; //    ,  . double allTime; //    short busState; //   ( ) short busDataOne[SDB_BUFFER_MAX]; // ,   wav short busDataTwo[SDB_BUFFER_MAX]; unsigned char switchBuffer; //    unsigned int posBufferOne, posBufferTwo; //    unsigned int posAllBuffer; //   char wavFileName[512]; //  wav  char isCreateWavFileFlag; // ,  wav    char isBufferOneFlag; // ,     char isBufferTwoFlag; unsigned int uartBaudrate; //  UART   unsigned int uartT; unsigned char uartBit; //   unsigned char uartStopBit; //    unsigned char uartParityBit; unsigned char isAudioOutput; unsigned char isWavFileOutput; #if SDB_WITH_OPENAL == 1 ALboolean CheckALCError(void); ALboolean CheckALError(void); char initOpenAL(void); void destroyOpenAL(void); void playOpenAlSound(void); void stopOpenAlSound(void); void closeOpenAlSound(void); int getBufferStatusOpenAl(void); void setBufferOpenAl(signed short *buf,unsigned long siz); char updateOpenAl(void); #endif char createWavFile(char * filename,unsigned long sampleRate,unsigned short bitsPerSample, unsigned short numChannels); void writeSampleWavFile(void *data); void writeDataBlockWavFile(void *data,unsigned long len); void closeWavFile(void); void busDelay(unsigned short us); public: sdb(void); ~sdb(void); /** @brief       1-wire @param[in] data     1-wire */ void oneWireSendByte(unsigned char data); /** @brief     1-wire */ void oneWireReset(void); /** @brief    1- wire */ void oneWireStop(void); /** @brief      UART @param[in] data    UART */ void uartSendByte(unsigned char data); /** @brief     UART @param[in] data    UART */ void uartSend(unsigned long data); /** @brief   UART @param[in] baudrate   UART */ void uartSetBaudrate(unsigned long baudrate); /** @brief     @param[in] bit  ,   UART    */ void uartSetBit(unsigned char bit); /** @brief          .     1. @param[in] bit    */ void uartSetStopBit(unsigned char bit); /** @brief          UART  .   1,     ,   0,     UART     . @param[in] state ,   . */ void uartSetParityBit(unsigned char state); /** @brief    UART     UART,     .         . */ void uartStop(void); /** @brief    wav  @param[in] filename  wav  */ void setWavFileName(char* filename); /** @brief     OpenAL */ void playAudioOn(void); /** @brief     OpenAL */ void playAudioOff(void); /** @brief     wav  */ void recordOn(void); /** @brief     wav  */ void recordOff(void); }; #endif // MUSICDIGITALBUS_H_INCLUDED


Kode Sumber File SoundsDigitalBus.cpp
 #include "SoundsDigitalBus.h" #if SDB_WITH_OPENAL == 1 //   ALboolean sdb::CheckALCError(void) { ALenum ErrCode; ErrCode = alcGetError(openAlDevice); if (ErrCode != ALC_NO_ERROR) { return AL_FALSE; } return AL_TRUE; } ALboolean sdb::CheckALError(void) { ALenum ErrCode; if ((ErrCode = alGetError()) != AL_NO_ERROR) { return AL_FALSE; } return AL_TRUE; } //  OpenAL char sdb::initOpenAL(void) { ALfloat SourcePos[] = {0.0, 0.0, 0.0}; ALfloat SourceVel[] = {0.0, 0.0, 0.0}; //  . ALfloat ListenerPos[] = { 0.0, 0.0, 0.0 }; //  . ALfloat ListenerVel[] = { 0.0, 0.0, 0.0 }; //  . ( 3  –  «»,  3 – «») ALfloat ListenerOri[] = { 0.0, 0.0, -1.0, 0.0, 1.0, 0.0 }; #if SDB_WITH_DEBUG_MODE == 1 printf("alcOpenDevice\n"); #endif openAlDevice = alcOpenDevice(0); // open default device if (openAlDevice != 0) { openAlContext = alcCreateContext(openAlDevice,0); // create context if (openAlContext != 0) { #if SDB_WITH_DEBUG_MODE == 1 printf("alcMakeContextCurrent\n"); #endif alcMakeContextCurrent(openAlContext); // set active context } else { #if SDB_WITH_DEBUG_MODE == 1 printf("Error context\n"); #endif return 0; } } else { #if SDB_WITH_DEBUG_MODE == 1 printf("Error Open Device\n"); #endif return 0; } //  alListenerfv(AL_POSITION, ListenerPos); //  alListenerfv(AL_VELOCITY, ListenerVel); //  alListenerfv(AL_ORIENTATION, ListenerOri); alGenSources(1, &openAlSource); if (!CheckALError()) return false; alSourcef (openAlSource, AL_PITCH, 1.0f); alSourcef (openAlSource, AL_GAIN, 1.0f); alSourcefv(openAlSource, AL_POSITION, SourcePos); alSourcefv(openAlSource, AL_VELOCITY, SourceVel); alSourcei (openAlSource, AL_LOOPING, AL_FALSE); alSourcei(openAlSource, AL_LOOPING, AL_FALSE); openAlnBuf = 0; return 1; } void sdb::destroyOpenAL(void) { alSourceStop(openAlSource); //    alcMakeContextCurrent(0); //   alcDestroyContext(openAlContext); //    alcCloseDevice(openAlDevice); } void sdb::playOpenAlSound(void) { alSourcePlay(openAlSource); } void sdb::stopOpenAlSound(void) { alSourceStop(openAlSource); } void sdb::closeOpenAlSound(void) { alSourceStop(openAlSource); if (alIsSource(openAlSource)) alDeleteSources(1, &openAlSource); } int sdb::getBufferStatusOpenAl(void) { int processed = 0; if (openAlnBuf == 0) return 1; alGetSourcei(openAlSource, AL_BUFFERS_PROCESSED, &processed); CheckALError(); #if SDB_WITH_DEBUG_MODE == 1 printf("getBufferStatus: %d\n",processed); #endif if (processed != 0) { return processed; } return 0; } void sdb::setBufferOpenAl(signed short* buf, unsigned long siz) { int processed = 0; ALuint BufID = 0; #if _OPENAL_FORMAT == AL_FORMAT_MONO16 siz = siz*2; #endif // _OPENAL_FORMAT #if _OPENAL_FORMAT == AL_FORMAT_STEREO16 siz = siz*4; #endif // _OPENAL_FORMAT #if _OPENAL_FORMAT == AL_FORMAT_STEREO8 siz = siz*2; #endif // _OPENAL_FORMAT //     alGetSourcei(openAlSource, AL_BUFFERS_PROCESSED, &processed); CheckALError(); //   ,          if ((processed == 0) && (openAlnBuf < OPENAL_NUM_OF_DYNBUF)) { openAlnBuf++; //   alGenBuffers(1, &BufID); //   alBufferData(BufID,SDB_OPENAL_FORMAT,buf,siz,SDB_OPENAL_FREQUENCY); //     alSourceQueueBuffers(openAlSource, 1, &BufID); //    if (openAlnBuf == 1) alSourcePlay(openAlSource); } else { #if SDB_WITH_DEBUG_MODE == 1 printf("processed: %d openAlnBuf: %d\n",processed,openAlnBuf); #endif // ,        while (getBufferStatusOpenAl() == 0); //     alSourceUnqueueBuffers(openAlSource, 1, &BufID); CheckALError(); //    alBufferData(BufID,SDB_OPENAL_FORMAT,buf,siz,SDB_OPENAL_FREQUENCY); CheckALError(); alSourceQueueBuffers(openAlSource, 1, &BufID); CheckALError(); } } //        ,    //  1       char sdb::updateOpenAl(void) { int processed = 0; ALuint BufID; //     alGetSourcei(openAlSource, AL_BUFFERS_PROCESSED, &processed); #if SDB_WITH_DEBUG_MODE == 1 printf("updateOpenAl: %d\n",processed); #endif //     if (openAlnBuf == processed) { //     while (processed--) { //     alSourceUnqueueBuffers(openAlSource, 1, &BufID); if (!CheckALError()) return 0; alDeleteBuffers(1, &BufID); openAlnBuf--; } alSourceStop(openAlSource); #if SDB_WITH_DEBUG_MODE == 1 printf("alSourceStop: %d\n",openAlnBuf); #endif return 0; } return 1; } #endif //    .    void sdb::busDelay(unsigned short us) { double Time = (double)us/1000000.0; double locTime = allTime; char isFlag = 0; //  wav ,       if (isCreateWavFileFlag == 0) { if (isWavFileOutput == 1) { isFlag = createWavFile(wavFileName,SDB_FREQUENCY,SDB_BIT,SDB_CANNEL); //     ,    if (isFlag == 1) isCreateWavFileFlag = 1; } if (isAudioOutput == 1) { initOpenAL(); if (isWavFileOutput == 0) isCreateWavFileFlag = 1; } } allTime = allTime + Time; //     if (isCreateWavFileFlag == 1) //     while(locTime < allTime) { if (switchBuffer == 0) { if (posBufferOne >= SDB_BUFFER_MAX) { posBufferOne = 0; posBufferTwo = 0; busDataTwo[posBufferTwo++] = busState; isBufferOneFlag = 1; switchBuffer = 1; if (isWavFileOutput == 1) writeDataBlockWavFile(busDataOne,SDB_BUFFER_MAX); #if SDB_WITH_OPENAL == 1 if (isAudioOutput == 1) setBufferOpenAl(busDataOne,SDB_BUFFER_MAX); #endif } else { busDataOne[posBufferOne++] = busState; } } else if (switchBuffer == 1) { if (posBufferTwo >= SDB_BUFFER_MAX) { posBufferOne = 0; posBufferTwo = 0; busDataOne[posBufferOne++] = busState; isBufferTwoFlag = 1; switchBuffer = 0; if (isWavFileOutput == 1) writeDataBlockWavFile(busDataTwo,SDB_BUFFER_MAX); #if SDB_WITH_OPENAL == 1 if (isAudioOutput == 1) setBufferOpenAl(busDataTwo,SDB_BUFFER_MAX); #endif } else { busDataTwo[posBufferTwo++] = busState; } } posAllBuffer++; locTime = locTime + dTime; } } char sdb::createWavFile(char * filename,unsigned long sampleRate,unsigned short bitsPerSample, unsigned short numChannels) { char type[4]; const unsigned long subchunk1Size = 16; unsigned long byteRate; const unsigned short audioFormat = 1; unsigned short len_str = 0; char str_filename[512] = {0}; unsigned short i; //        wavLenDataType = bitsPerSample/8; wavSubchunk2Size = 0; wavChunkSize = wavSubchunk2Size + 44 - 8; //      wavBlockAlign = bitsPerSample / (8 * numChannels); // ,    . byteRate = sampleRate * wavBlockAlign; strcpy(str_filename,filename); len_str = strlen(str_filename); if (len_str < 4) return 0; //       .wav i = 0; while(i < len_str) { if (filename[i] == '.' && (i + 3) < len_str) { if (((filename[i + 1] == 'w') && (filename[i + 2] == 'a') && (filename[i + 3] == 'v')) || ((filename[i + 1] == 'W') && (filename[i + 2] == 'A') && (filename[i + 3] == 'V'))) { //     wav break; } else { if ((i + 3) >= 512) return 0; filename[i + 1] = 'w'; filename[i + 2] = 'a'; filename[i + 3] = 'v'; len_str = i + 4; break; } } else if ((i + 1) == len_str) { if ((i + 3) >= 512) return 0; filename[i + 1] = '.'; filename[i + 2] = 'w'; filename[i + 3] = 'a'; filename[i + 4] = 'v'; len_str = i + 5; break; } i++; } type[0] = filename[len_str - 4]; type[1] = filename[len_str - 3]; type[2] = filename[len_str - 2]; type[3] = filename[len_str - 1]; if (type[0]!='.'||type[1]!='w'||type[2]!='a'||type[3]!='v') { if (type[0]!='.'||type[1]!='W'||type[2]!='A'||type[3]!='V') { return 0; } } fpSave=fopen(str_filename,"wb"); type[0]='R'; type[1]='I'; type[2]='F'; type[3]='F'; fwrite(&type,sizeof(char),4,fpSave); fwrite(&wavChunkSize,sizeof(unsigned long),1,fpSave); type[0]='W'; type[1]='A'; type[2]='V'; type[3]='E'; fwrite(&type,sizeof(char),4,fpSave); type[0]='f'; type[1]='m'; type[2]='t'; type[3]=' '; fwrite(&type,sizeof(char),4,fpSave); fwrite(&subchunk1Size,sizeof(unsigned long),1,fpSave); fwrite(&audioFormat,sizeof(unsigned short),1,fpSave); fwrite(&numChannels,sizeof(unsigned short),1,fpSave); fwrite(&sampleRate,sizeof(unsigned long),1,fpSave); fwrite(&byteRate,sizeof(unsigned long),1,fpSave); fwrite(&wavBlockAlign,sizeof(unsigned short),1,fpSave); //    .   “”   . 8 , 16   .. fwrite(&bitsPerSample,sizeof(unsigned short),1,fpSave); type[0]='d'; type[1]='a'; type[2]='t'; type[3]='a'; // subchunk2Id //   “data” (0x64617461  big-endian ) fwrite(&type, sizeof(char), 4,fpSave); wavSubchunk2Size = 0; //    . fwrite(&wavSubchunk2Size, sizeof(unsigned long), 1,fpSave); return 1; } void sdb::writeSampleWavFile(void* data) { fwrite(data, wavLenDataType, wavBlockAlign, fpSave); wavSubchunk2Size = wavSubchunk2Size + wavLenDataType*wavBlockAlign; } void sdb::writeDataBlockWavFile(void* data, unsigned long len) { fwrite(data, wavLenDataType, len, fpSave); wavSubchunk2Size = wavSubchunk2Size + len*wavLenDataType; } //         . void sdb::closeWavFile(void) { wavChunkSize = wavSubchunk2Size + 44 - 8; fseek(fpSave,4,SEEK_SET); fwrite(&wavChunkSize,4,1,fpSave); fseek(fpSave,40,SEEK_SET); fwrite(&wavSubchunk2Size,4,1,fpSave); fclose(fpSave); } //  sdb::sdb(void) { openAlnBuf = 0; wavBlockAlign = 0; wavSubchunk2Size = 0; wavChunkSize = 0; wavLenDataType = 0; fpSave = NULL; strcat(wavFileName,SDB_WAV_FILE_NAME); dTime = 1.0/(double)SDB_OPENAL_FREQUENCY; allTime = 0.0; //      switchBuffer = 0; //    () posAllBuffer = 0; //     posBufferOne = 0; posBufferTwo = 0; isBufferOneFlag = 0; isBufferTwoFlag = 0; isCreateWavFileFlag = 0; busState = SDB_MAX_DATA; uartSetBaudrate(SDB_UART_BAUDRATE); uartSetBit(SDB_UART_BIT); uartSetStopBit(SDB_UART_STOP_BIT); uartSetParityBit(SDB_UART_PARITY); recordOn(); playAudioOn(); } //  sdb::~sdb() { if (isCreateWavFileFlag == 1) { if (posBufferOne > 0) { if (isWavFileOutput == 1) writeDataBlockWavFile(busDataOne,posBufferOne); #if SDB_WITH_OPENAL == 1 if (isAudioOutput == 1) setBufferOpenAl(busDataOne,posBufferTwo); #endif } else if (posBufferTwo > 0) { if (isWavFileOutput == 1) writeDataBlockWavFile(busDataTwo,posBufferTwo); #if SDB_WITH_OPENAL == 1 if (isAudioOutput == 1) setBufferOpenAl(busDataTwo,posBufferTwo); #endif } if (isWavFileOutput == 1) closeWavFile(); isCreateWavFileFlag = 0; #if SDB_WITH_OPENAL == 1 if (isAudioOutput == 1) { while (1) { // ,      if (updateOpenAl() == 0) break; } closeOpenAlSound(); destroyOpenAL(); } #endif } } //      one wire void sdb::oneWireSendByte(unsigned char data) { for (register unsigned char i = 0; i < 8; i++) { if((data & (1 << i)) == 1 << i) { busState = 0; busDelay(12); busState = SDB_MAX_DATA; busDelay(65); } else { busState = 0; busDelay(65); busState = SDB_MAX_DATA; busDelay(12); } } busState = SDB_MAX_DATA; } //       uart void sdb::uartSendByte(unsigned char data) { unsigned short pBit = 0; //     //   busState = SDB_MAX_DATA; busDelay(uartT); busState = -SDB_MAX_DATA; //  for (register unsigned char i = 0; i < 8; i++) { if((data & (1<<i)) == 1<<i) { busState = -SDB_MAX_DATA; busDelay(uartT); busState = -SDB_MAX_DATA; pBit++; } else { busState = SDB_MAX_DATA; busDelay(uartT); busState = -SDB_MAX_DATA; } } //   if (uartParityBit != 0) { if ((pBit & 0x0001) == 0) { busState = -SDB_MAX_DATA; busDelay(uartT); busState = -SDB_MAX_DATA; } else { busState = SDB_MAX_DATA; busDelay(uartT); busState = -SDB_MAX_DATA; } } //   busState = -SDB_MAX_DATA; for (register unsigned char i = 0; i < uartStopBit; i++) busDelay(uartT); busState = -SDB_MAX_DATA; } //      uart void sdb::uartSend(unsigned long data) { unsigned short pBit = 0; //     //   busState = SDB_MAX_DATA; busDelay(uartT); busState = -SDB_MAX_DATA; //  for (register unsigned char i = 0; i < uartBit; i++) { if((data & (1<<i)) == 1<<i) { busState = -SDB_MAX_DATA; busDelay(uartT); busState = -SDB_MAX_DATA; } else { busState = SDB_MAX_DATA; busDelay(uartT); busState = -SDB_MAX_DATA; } } //   if (uartParityBit != 0) { if ((pBit & 0x0001) == 0) { busState = -SDB_MAX_DATA; busDelay(uartT); busState = -SDB_MAX_DATA; } else { busState = SDB_MAX_DATA; busDelay(uartT); busState = -SDB_MAX_DATA; } } //   busState = -SDB_MAX_DATA; for (register unsigned char i = 0; i < uartStopBit; i++) busDelay(uartT); busState = -SDB_MAX_DATA; } //    UART void sdb::uartSetBaudrate(unsigned long baudrate) { if (baudrate > SDB_UART_BAUDRATE_MAX) baudrate = SDB_UART_BAUDRATE_MAX; uartBaudrate = baudrate; uartT = 1000000 / baudrate; } void sdb::uartSetBit(unsigned char bit) { if (bit > 32) bit = 32; if (bit == 0) bit = 1; if (bit < 8) bit = 8; uartBit = bit; } void sdb::uartSetStopBit(unsigned char bit) { if (bit == 0) bit = 1; uartStopBit = bit; } void sdb::uartSetParityBit(unsigned char state) { if (state > 1) state = 1; uartParityBit = state; } //       void sdb::oneWireReset(void) { busState = SDB_MAX_DATA; busDelay(100); busState = 0;// "0" busDelay(485);//  480 busState = SDB_MAX_DATA; busDelay(65);//  60      busState = 0;// "0" busDelay(400); busState = SDB_MAX_DATA; busDelay(100); } //    1-wire void sdb::oneWireStop(void) { if (isCreateWavFileFlag == 1) { if (posBufferOne > 0) { if (isWavFileOutput == 1) writeDataBlockWavFile(busDataOne,posBufferOne); #if SDB_WITH_OPENAL == 1 if (isAudioOutput == 1) setBufferOpenAl(busDataOne,posBufferOne); #endif } else if (posBufferTwo > 0) { if (isWavFileOutput == 1) writeDataBlockWavFile(busDataTwo,posBufferTwo); #if SDB_WITH_OPENAL == 1 if (isAudioOutput == 1) setBufferOpenAl(busDataTwo,posBufferTwo); #endif } #if SDB_WITH_OPENAL == 1 while (1) { // ,      if (updateOpenAl() == 0) break; } closeOpenAlSound(); destroyOpenAL(); #endif if (isWavFileOutput == 1) closeWavFile(); isCreateWavFileFlag = 0; } } void sdb::uartStop(void) { if (isCreateWavFileFlag == 1) { if (posBufferOne > 0) { if (isWavFileOutput == 1) writeDataBlockWavFile(busDataOne,posBufferOne); #if SDB_WITH_OPENAL == 1 if (isAudioOutput == 1) setBufferOpenAl(busDataOne,posBufferOne); #endif } else if (posBufferTwo > 0) { if (isWavFileOutput == 1) writeDataBlockWavFile(busDataTwo,posBufferTwo); #if SDB_WITH_OPENAL == 1 if (isAudioOutput == 1) setBufferOpenAl(busDataTwo,posBufferTwo); #endif } #if SDB_WITH_OPENAL == 1 if (isAudioOutput == 1) { while (1) { // ,      if (updateOpenAl() == 0) break; } closeOpenAlSound(); destroyOpenAL(); } #endif if (isWavFileOutput == 1) closeWavFile(); isCreateWavFileFlag = 0; } } void sdb::setWavFileName(char* filename) { strcat(wavFileName,filename); } void sdb::playAudioOn(void) { if (isCreateWavFileFlag == 0) isAudioOutput = 1; } void sdb::playAudioOff(void) { if (isCreateWavFileFlag == 0) isAudioOutput = 0; } void sdb::recordOn(void) { if (isCreateWavFileFlag == 0) isWavFileOutput = 1; } void sdb::recordOff(void) { if (isCreateWavFileFlag == 0) { if (isAudioOutput == 1) isWavFileOutput = 0; else isWavFileOutput = 1; } }


File main.h
 #ifndef MAIN_H_INCLUDED #define MAIN_H_INCLUDED #define LINUX 0x00 #define WINDOWS 0x01 #define RU 0x00 #define EN 0x01 ///    #define TYPE_OS WINDOWS ///   #define LANGUAGE_PROGRAM RU #define UART_BUS 0x01 #define ONE_WIRE_BUS 0x02 #include <iostream> #include "SoundsDigitalBus.h" #include "stdlib.h" #include <stdio.h> #endif // MAIN_H_INCLUDED


File main.cpp
 #include "main.h" sdb soundsDigitalBus; int main() { static FILE *fp = NULL; //    char strData[512]; //    char strChar = 0; //  unsigned char busType; //    int strPos = 0; //    int uartBaudrate = 0; //  UART int uartBit = 8; int uartStopBit = 0; //int uartParityBit = 0; #if TYPE_OS==WINDOWS and LANGUAGE_PROGRAM==RU setlocale(LC_ALL, "Russian"); printf("  UART  ,   0,   1-wire.\n"); #else printf("Enter the UART baud rate, or specify 0 if you want 1-wire.\n"); #endif printf("UART Baudrate: "); memset(strData,0,512); while(1) { strChar = getchar(); if ((strChar >= '0') && (strChar <= '9')) { strData[strPos++] = strChar; } else break; } uartBaudrate = atoi(strData); if (uartBaudrate == 0) { busType = ONE_WIRE_BUS; } else { busType = UART_BUS; soundsDigitalBus.uartSetBaudrate(uartBaudrate); } printf("\n"); if (busType == UART_BUS) { #if TYPE_OS==WINDOWS and LANGUAGE_PROGRAM==RU printf("   UART\n"); #else printf("Enter the number of bits UART.\n"); #endif printf("UART bit: "); memset(strData,0,512); while(1) { strChar = getchar(); if ((strChar >= '0') && (strChar <= '9')) { strData[strPos++] = strChar; } else break; } uartBit = atoi(strData); soundsDigitalBus.uartSetBit(uartBit); printf("\n"); #if TYPE_OS==WINDOWS and LANGUAGE_PROGRAM==RU printf("    UART\n"); #else printf("Enter the number of stop bits UART.\n"); #endif printf("UART stop bit: "); memset(strData,0,512); while(1) { strChar = getchar(); if ((strChar >= '0') && (strChar <= '9')) { strData[strPos++] = strChar; } else break; } uartStopBit = atoi(strData); soundsDigitalBus.uartSetStopBit(uartStopBit); printf("\n"); #if TYPE_OS==WINDOWS and LANGUAGE_PROGRAM==RU printf("    UART? (Y/n)\n"); #else printf("Use the parity bit in the UART? (Y/n)\n"); #endif strChar = getchar(); if ((strChar == 'n') || (strChar == 'N') || (strChar == '') || (strChar == '')) { soundsDigitalBus.uartSetParityBit(0); printf("not used\n"); } else { soundsDigitalBus.uartSetParityBit(1); printf("Yes, use\n"); } getchar(); printf("\n"); } FILE_M: printf("\n"); #if TYPE_OS==WINDOWS printf("        .\n"); printf(": D: \\ Games \\ SR2 \\ Rangers.txt\n"); printf(": "); #else printf("Specify the file to convert it to record digital bus.\n"); printf("For example: D: \\ Games \\ SR2 \\ Rangers.txt\n"); printf("File: "); #endif memset(strData,0,512); strPos = 0; while(1) { strChar = getchar(); if (strChar != '\n') { strData[strPos++] = strChar; } else break; } fp = fopen(strData,"rb"); if (fp == NULL) { printf("\n"); #if TYPE_OS==WINDOWS printf("!  %s  !\n",strData); printf("     .\n"); printf("...\n"); #else printf("Error! File %s not found!\n",strData); printf("Try to correctly specify the path to the file.\n"); printf("...\n"); #endif getchar(); goto FILE_M; } //soundsDigitalBus.setWavFileName(strData); printf("\n"); #if SDB_WITH_OPENAL == 1 #if TYPE_OS==WINDOWS printf("      ? (Y/n)\n"); #else printf("Play audio while working digital bus? (Y/n)\n"); #endif strChar = getchar(); if ((strChar == 'n') || (strChar == 'N') || (strChar == '') || (strChar == '')) { soundsDigitalBus.playAudioOff(); printf("not used\n"); } else { soundsDigitalBus.playAudioOn(); printf("Yes, use\n"); } getchar(); printf("\n"); #if TYPE_OS==WINDOWS printf("      ? (Y/n)\n"); #else printf("Record audio while working digital bus? (Y/n)\n"); #endif strChar = getchar(); if ((strChar == 'n') || (strChar == 'N') || (strChar == '') || (strChar == '')) { soundsDigitalBus.recordOff(); printf("not used\n"); } else { soundsDigitalBus.recordOn(); printf("Yes, use\n"); } getchar(); #else soundsDigitalBus.recordOn(); #endif printf("\n"); #if TYPE_OS==WINDOWS printf(" .\n"); #else printf("The transformation started.\n"); #endif unsigned char uartData[8]; if (busType == ONE_WIRE_BUS) { soundsDigitalBus.oneWireReset(); } while(1) { if (fread(uartData,sizeof(unsigned char),1,fp) > 0) { if (busType == UART_BUS) { if (uartBit == 8) { soundsDigitalBus.uartSendByte(uartData[0]); } else { soundsDigitalBus.uartSend(uartData[0]); } } else if (busType == ONE_WIRE_BUS) { soundsDigitalBus.oneWireSendByte(uartData[0]); } } else break; } fclose(fp); if (busType == ONE_WIRE_BUS) { soundsDigitalBus.oneWireStop(); } else if (busType == UART_BUS) { soundsDigitalBus.uartStop(); } #if TYPE_OS==WINDOWS printf(" .\n"); #else printf("Conversion completed.\n"); #endif return 0; //soundsDigitalBus.oneWireReset(); soundsDigitalBus.uartSetBaudrate(1200); for (int i = 0; i < 256; i ++) { for (int len = 0; len < 8; len++) { soundsDigitalBus.uartSendByte(i); } printf("%d\n",i); } soundsDigitalBus.oneWireStop(); return 0; }


PS Saya melihat kesalahan bahwa dalam kode sumber bit mulai logis 1, bukan 0, dan bit berhenti adalah 0, bukan 1. Siapa yang butuh kecocokan dasar dari sinyal suara kenyataan dapat memperbaiki kesalahan itu sendiri.

Source: https://habr.com/ru/post/id408485/

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