//main.c
//TEST UART AND SRAM
#include <mega128.h>        
//#include <stdlib.h>
#include <stdio.h> //sprintf     
#include <delay.h>
#include "serial.h"//my serial functions
#include "sta013.h"
#include "ui.h"//user interface

//set lcd_port 0x18 for port B
#asm
    .equ __lcd_port=0x18
#endasm
#include <lcd.h> // LCD driver routines

#ifndef begin
#define begin {
#define end }
#endif   

//UART using UART1 on PORTD[2..3]                                        
       
void initialize(void);         
   
void main(void)
begin    
unsigned char done;
initialize();
S_Printf("\n\rWelcome to Serial MP3 Player\n\r");
S_Printf("Version 1.0 by Zhi-Hern Loh\n\r");
S_Printf("User interface is as follows\n\r");
S_Printf("Button|Function\n\r");
S_Printf("  0    Start playback\n\r");
S_Printf("  1    Stop  playback\n\r");
S_Printf("  2    Volume Up\n\r");
S_Printf("  3    Volume Down\n\r");
STA013_Init();
/*
//STA013_Test_Serial_Interface();
S_Printf("STA initialized, now playing test song\n\r");
//STA013_Play_MP3();                              
S_Printf("Test song complete\n\r");
*/
                                           
//Test Buttons     

done=0;                                   
vol_attn_l = vol_attn_r = 0;
/*
while(!done)
  begin
  debounce();
  if (New_Butnum)
    begin
    switch(Current_Butnum)
      begin
      case Btn_Start:
      	lcd_gotoxy(0,1);lcd_putsf("Start");
      	break;
      case Btn_Stop:
      	lcd_gotoxy(0,1);lcd_putsf("Stop");
      	break;
      case Btn_Vol_Up:
      	lcd_gotoxy(0,1);lcd_putsf("Vol up");
      	if (vol_attn_l>0) vol_attn_l--;
      	if (vol_attn_r>0) vol_attn_r--;
      	STA013_Write(DLA, vol_attn_l);
      	STA013_Write(DRA, vol_attn_r);
      	break;
      case Btn_Vol_Dn:
      	lcd_gotoxy(0,1);lcd_putsf("Vol dn");
      	if (vol_attn_l<255) vol_attn_l++;
      	if (vol_attn_r<255) vol_attn_r++;
     	STA013_Write(DLA, vol_attn_l);
      	STA013_Write(DRA, vol_attn_r);
      	break;
      case (1<<4):
      	done=1;
      	break;
      default:
      	break;
      end
    Clr_Butnum;
    end
  delay_ms(30);
  end      
lcd_gotoxy(0,1);lcd_putsf("             "); */

while(1)
  begin
  /*
  S_Printf("Testing 1 sec timer\n\r");
  PORTE=PORTE&0x00;
  SEC_TIMER_ISR_ON;
  SEC_COUNTER_ON;
  S_Printf("TIM0 activated\n\r");
  */
  S_Printf("Ready for Xmodem transfer\n\r");
  S_Printf("Press Btn 0 to start Xmodem\n\r");
  //pause();
  done=0;
  while(!done)
    begin//wait for start button press
    debounce();
    if (New_Butnum)
      begin
      switch(Current_Butnum)
        begin
        case Btn_Start:
       	  lcd_gotoxy(0,1);lcd_putsf("Start");
          done=1;
          break;            
        default:
          break;
        end//end switch
      Clr_Butnum;
      end              
    delay_ms(30);
    end
  //S_Printf("Writing run\n\r");
  STA013_Write(0x72,0x01);
  delay_us(2);    
  //S_Printf("Writing play\n\r");
  STA013_Write(0x13,0x01);
  delay_us(2);
  //S_Printf("Writing mute\n\r");
  STA013_Write(0x14,0x00);
  //DATA_REQ should go high   
  X_Start_Instant();                        
  X_Poll();//this runs until transfer complete
  STA013_Audio_Stop();
  S_Printf("File transfer complete\n\r");
  lcd_clear();
  lcd_putsf("Btn 0 to start");
  //X_Show_Buffer();
  end
end                   

void initialize(void)
begin

lcd_init(16);//16 char LCD
lcd_clear();
lcd_gotoxy(0,0);
lcd_putsf("Serial MP3 v1.0");

Init_Serial();//intialize Serial I/O
#asm
sei
#endasm                             
UI_Init();//User interface

//Test UART communication
S_Printf("Serial MP3 player v1.0 by Zhi-Hern Loh\n\r");


//Init_Xmodem();//intialize Xmodem state vars

end