//TEST Transmit Unit

//Includes
#include<mega32.h>
#include<.\txrx.c>

//definitions
#define begin {
#define end }
#define data_length 4
#define tx_id 3
#define threshold 1000
//declarations

char data[data_length]; 
unsigned char packet_count;
unsigned int time;

//**********************************************************
//timer 0 compare ISR
interrupt [TIM0_COMP] void timer0_compare(void)
begin      
	if(time<=threshold) time++; 
end  


//**********************************************************
void generate_data(char count)
begin                   
	data[0] = count;
	data[1] = 26;
	data[2] = 122;
	data[3] = 75;
	data[4] = 52;
end                                                         


//**********************************************************
//initialization
void init()
begin
        //Used for LED array, output
	DDRC = 0xff;
	PORTC=0xff; //starting off

	//PORTD used for TX.
	//d7 led, d1 TX, d0,d2..6 unused
	DDRD = 0xff;
	PORTD.7=0; //turn d7 led on as power-on led
                          
  	//set up timer 0  
  	TIMSK=2;		//turn on timer 0 cmp match ISR 
  	OCR0 = 250;  	//set the compare re to 250 time ticks
  	//prescalar to 64 and turn on clear-on-match
  	TCCR0=0b00001011;
  	
  	txrx_init(1,0,249,1);//TX only - 4000 baud - led on
  	
	//initialize variables
	time=0;
        packet_count=0;
	generate_data(packet_count);
 	#asm ("sei");
end                                                         




//**********************************************************
void main()
begin

init();

while(1)
begin 
       	if(time==threshold)
	begin
                generate_data(packet_count);
                tx_me(data, data_length, tx_id);
       		time=0;
		PORTD.7 = 1;  
		packet_count++;
	end
end //while
end //main