//Include Header-----------------------------------------------------
#include"prog.h"

//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//Main-Program

int main(int argc, const char * argv[]){

//Setting up Timer-Signal--------------------------------------------
	sigset_t signal;
	pthread_t thread;
	int signal_err, pthread_err;
	signal_err = sigemptyset(&signal);
	if(signal_err!=0){
		error_handler(signal_err, "Not a valid Signal");
	}
	signal_err = sigaddset(&signal, SIGALRM);
	if(signal_err!=0){
		error_handler(signal_err, "Not a valid Signal");
	}
	pthread_err = pthread_sigmask(SIG_BLOCK, &signal, NULL);
	if(pthread_err!=0){
		error_handler(pthread_err, "Error changing Signal-Mask");
	}	

//Loading Page-------------------------------------------------------
	FILE * file_stream = fopen("test.hex", "r");
	if(file_stream==NULL){
		fprintf(stderr, "No File \n");
	}
	char * page_get_ptr = page_get(file_stream);
	for(int i=0; i<page_size; i++){
		printf("%02X \n", *page_get_ptr);
		page_get_ptr++;
	}

//initializing USART at USB_PORT-------------------------------------
	int USB = open("/dev/ttyACM3", O_RDWR|O_NOCTTY|O_NONBLOCK);
	int USB_err = isatty(USB);
	if(USB_err!=1){
		error_handler(USB_err, "No File Descriptor");
	}
	struct termios * termios_ptr = (struct termios *)
									malloc(sizeof(struct termios));
	(*termios_ptr).c_iflag = IGNPAR;			//ignore Parity-Err
	(*termios_ptr).c_oflag = 0;
	(*termios_ptr).c_cflag = CS8|CREAD;			//set Size, enable RX 
	(*termios_ptr).c_lflag = 0;
	(*termios_ptr).c_cc[VMIN] = 0;				//set min Characters
	cfsetspeed(termios_ptr, B19200);			//set Baudrate 19.2k
	tcsetattr(USB, TCSANOW ,termios_ptr);

//Get Command--------------------------------------------------------
	char cmd_check = 0;
	char * frame_ptr;
	char * cmd_ack_ptr = (char *)malloc(3*sizeof(char));
	frame_ptr = cmd_build(page_read, (char)page_size);	
	write(USB, frame_ptr, 3*sizeof(char));
	while(cmd_check<3){
		read(USB, cmd_ack_ptr, sizeof(char));
		tcflush(USB, TCIFLUSH);
		if(*cmd_ack_ptr==page_size){
			cmd_check++;
		}
	}
	tcflush(USB, TCIOFLUSH);
	set_timer(0, 1000);
	pthread_err = pthread_create(&thread, NULL, 
									&signal_thread, (void *)&signal);
	if(pthread_err!=0){
		error_handler(pthread_err, "Failed to create Thread");
	}
	while(timer_state);
	printf("Page Read acknoledged \n");
	char * cmd_done_ptr = (char *)malloc(sizeof(char));
	cmd_check = 0;
	char * page_ptr = page_mask(page_build(page_size)); 
	write(USB, page_ptr, 2*page_size*sizeof(char));
	while(cmd_check<3){
		read(USB, cmd_done_ptr, sizeof(char));
		tcflush(USB, TCIFLUSH);
		if(*cmd_done_ptr==frame_mask){
			break;
		}
	}
	printf("Page Read Complete \n");
	close(USB);
	return EXIT_SUCCESS;
}	
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++