아두이노 Serial MP3 모듈 -#4

이전에 했던 두개를 합쳤다.
소스상의 정리도 조금 했지만 큰차이는 없으니 소스코드만 봐도 이해가 가능 할것 같다.
그리고 이전에 했던 시리얼 입력 함수는 주석 처리 했지만 쉽게 다시 원상 복귀 할 수가 있다.

항상 그렇지만 나무를 볼라고 하지 말고 숲이다. 
메인 함수, loop만 열심히 보면 된다.
다음에 기회되면 코딩에 대한 철학도 이야기 하고 싶다.

 

 

//code rearranged by Javier Muñoz 10/11/2016 ask me at javimusama@hotmail.com
#include <SoftwareSerial.h>
 
#define ARDUINO_RX 2//should connect to TX of the Serial MP3 Player module
#define ARDUINO_TX 3//connect to RX of the module
SoftwareSerial mySerial(ARDUINO_RX, ARDUINO_TX);//init the serial protocol, tell to myserial wich pins are TX and RX
 
#define SCL_PIN 5
#define SDO_PIN 4
 
////////////////////////////////////////////////////////////////////////////////////
//all the commands needed in the datasheet(http://geekmatic.in.ua/pdf/Catalex_MP3_board.pdf)
static int8_t Send_buf[8] = {0} ;//The MP3 player undestands orders in a 8 int string
                                 //0X7E FF 06 command 00 00 00 EF;(if command =01 next song order) 
#define NEXT_SONG 0X01 
#define PREV_SONG 0X02 
 
#define CMD_PLAY_W_INDEX 0X03 //DATA IS REQUIRED (number of song)
 
#define VOLUME_UP_ONE 0X04
#define VOLUME_DOWN_ONE 0X05
#define CMD_SET_VOLUME 0X06//DATA IS REQUIRED (number of volume from 0 up to 30(0x1E))
#define SET_DAC 0X17
#define CMD_PLAY_WITHVOLUME 0X22 //data is needed  0x7E 06 22 00 xx yy EF;(xx volume)(yy number of song)
 
#define CMD_SEL_DEV 0X09 //SELECT STORAGE DEVICE, DATA IS REQUIRED
#define DEV_TF 0X02 //HELLO,IM THE DATA REQUIRED
                
#define SLEEP_MODE_START 0X0A
#define SLEEP_MODE_WAKEUP 0X0B
 
#define CMD_RESET 0X0C//CHIP RESET
#define CMD_PLAY 0X0D //RESUME PLAYBACK
#define CMD_PAUSE 0X0E //PLAYBACK IS PAUSED
 
#define CMD_PLAY_WITHFOLDER 0X0F//DATA IS NEEDED, 0x7E 06 0F 00 01 02 EF;(play the song with the directory \01\002xxxxxx.mp3
 
#define STOP_PLAY 0X16
 
#define PLAY_FOLDER 0X17// data is needed 0x7E 06 17 00 01 XX EF;(play the 01 folder)(value xx we dont care)
 
#define SET_CYCLEPLAY 0X19//data is needed 00 start; 01 close
 
#define SET_DAC 0X17//data is needed 00 start DAC OUTPUT;01 DAC no output
////////////////////////////////////////////////////////////////////////////////////
 
 
void setup()
{
  Serial.begin(9600);//Start our Serial coms for serial monitor in our pc
  mySerial.begin(9600);//Start our Serial coms for THE MP3
 
  /* Configure the clock and data pins */
  pinMode(SCL_PIN, OUTPUT);  
  pinMode(SDO_PIN, INPUT); 
    
  delay(500);//Wait chip initialization is complete
  sendCommand(CMD_SEL_DEV, DEV_TF);//select the TF card  
  delay(200);//wait for 200ms
}
 
void loop()
{
    int menuType =-1;
    
   // menuType = serial_command();
    menuType = Read_Keypad();
  
    if(menuType > 0 && menuType < 6) 
    {
        Serial.print(menuType); 
        Serial.print(" Selected" );     
        if(menuType ==1) 
        {
            sendCommand(CMD_PLAY_WITHVOLUME, 0X0F02);//play the first song with volume 15 class
        }
        else if(menuType ==2) 
        {
            sendCommand(NEXT_SONG, 0X0000);
        } 
         else if(menuType ==3) 
        {
            sendCommand(PREV_SONG, 0X0000);
        }    
         else if(menuType ==4) 
        {
            sendCommand(VOLUME_UP_ONE, 0X0000);
        }  
         else if(menuType ==5) 
        {
            sendCommand(VOLUME_DOWN_ONE, 0X0000);
        }
        Serial.print(" Complete\r\n");
        delay(100);  
    }
    delay(100);    
    return ;      
}
 
int serial_command()
{
    int menuType;
    char message[25];
    
    serial_command(message);
    menuType = atoi(message);//문자열을 숫자로  
     
    return menuType; 
}
 
void serial_command(char* buf)
{
    int tempPos = 0;
    while( 1)
    {
        while(Serial.available())
        {
            char c = Serial.read(); 
            if (tempPos < 1000) { buf[tempPos] = c; tempPos++;   }
        }
        buf[tempPos] = '\0';
 
        if (tempPos > 0 && buf[tempPos-2]=='\r'  && buf[tempPos-1]=='\n') break;
    }  
    return ; 
}
 
void sendCommand(int8_t command, int16_t dat)
{
    delay(20);
    Send_buf[0] = 0x7e; //starting byte
    Send_buf[1] = 0xff; //version
    Send_buf[2] = 0x06; //the number of bytes of the command without starting byte and ending byte
    Send_buf[3] = command; //
    Send_buf[4] = 0x00;//0x00 = no feedback, 0x01 = feedback
    Send_buf[5] = (int8_t)(dat >> 8);//datah
    Send_buf[6] = (int8_t)(dat); //datal
    Send_buf[7] = 0xef; //ending byte
    for(uint8_t i=0; i<8; i++)//
    {
       mySerial.write(Send_buf[i]) ;//send bit to serial mp3
       //Serial.print(Send_buf[i],HEX);//send bit to serial monitor in pc
    }
    //Serial.println();
}
 
void display_menu()
{
    Serial.print("==========MP3 PLAY 프로그램==========\n\n");   
    Serial.print("     SERIAL MP3 module     \n"); 
    Serial.print("********************\n"); 
    Serial.print("*      1.play     *\n"); 
    Serial.print("*      2.NEXT_SONG      *\n"); 
    Serial.print("*      3.PREV_SONG  *\n"); 
    Serial.print("*      4.VOLUME_UP_ONE  *\n");     
    Serial.print("*      5.VOLUME_DOWN_ONE  *\n"); 
    
    Serial.print("********************\n"); 
    Serial.print("메뉴을 선택하세요 : "); 
}
 
/* Read the state of the keypad */
byte Read_Keypad(void)
{
  byte Count;
  byte Key_State = 0;
 
  /* Pulse the clock pin 8 times (one for each key of the keypad) 
     and read the state of the data pin on each pulse */
  for(Count = 1; Count <= 16; Count++)
  {
    digitalWrite(SCL_PIN, LOW); 
    
    /* If the data pin is low (active low mode) then store the 
       current key number */
    if (!digitalRead(SDO_PIN)) 
    {
      Key_State = Count; 
      digitalWrite(SCL_PIN, HIGH);
      break;
    }
    
    digitalWrite(SCL_PIN, HIGH);
  }
  
  return Key_State; 
}