DFPlayerMini_Fast/DFPlayerMini_Fast.cpp at master · scottpav/DFPlayerMini_Fast · GitHub

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#include "DFPlayerMini_Fast.h"


void DFPlayerMini_Fast::begin(Stream &stream)
{
  _serial = &stream;

  return;
}

void DFPlayerMini_Fast::findChecksum()
{
  uint16_t checksum = (~(VER + LEN + commandValue + FEEDBACK + paramMSB + paramLSB)) + 1;

  checksumMSB = checksum >> 8;
  checksumLSB = checksum & 0xFF;

  return;
}


void DFPlayerMini_Fast::volume(uint8_t volume)
{
  commandValue = VOLUME_COMMAND;
  paramMSB = 0;
  paramLSB = volume;

  findChecksum();
  sendData();

  return;
}

void DFPlayerMini_Fast::play(uint16_t fileNum)
{
  commandValue = PLAY_COMMAND;
  paramMSB = (fileNum >> 8) & 0xFF;
  paramLSB = fileNum & 0xFF;

  findChecksum();
  sendData();

  return;
}

void DFPlayerMini_Fast::EQSelect(uint8_t setting)
{
  commandValue = EQ_COMMAND;
  paramMSB = 0;
  paramLSB = setting;

  findChecksum();
  sendData();

  return;
}

void DFPlayerMini_Fast::pause()
{
  commandValue = PAUSE_COMMAND;
  paramMSB = 0;
  paramLSB = 0;

  findChecksum();
  sendData();

  return;
}

void DFPlayerMini_Fast::resume()
{
  commandValue = RESUME_COMMAND;
  paramMSB = 0;
  paramLSB = 0;

  findChecksum();
  sendData();

  return;
}

void DFPlayerMini_Fast::sendData()
{
  _sending[0] = SB;
  _sending[1] = VER;
  _sending[2] = LEN;
  _sending[3] = commandValue;
  _sending[4] = FEEDBACK;
  _sending[5] = paramMSB;
  _sending[6] = paramLSB;
  _sending[7] = checksumMSB;
  _sending[8] = checksumLSB;
  _sending[9] = EB;

  _serial->write(_sending, DFPLAYER_SEND_LENGTH);

  return;
}