Colony

#include "comp-hub.h"

// ALSO DON'T FORGET TO CHECK OUT

// ATTRIBUTES ON LINES 39 ish TO 50 ish

#define PORT_DEFAULT "/dev/ttyUSB0"

#define BAUD_RATE 115200

static char* com_port = PORT_DEFAULT;

static int stream;

int main(void)

{

	if(lib_init() < 0)

		printf("Exiting...\n");

	//your code here

	listen();

	put_char('r');

	listen();

	put_char('b');

	listen();

	put_char('m');

	listen();

	return 0;

}

int lib_init()

{

	stream = open(com_port, O_RDWR);

	if (stream == -1)

	{

		printf("Failed to open connection on port ");

		printf("%i\n", *com_port);

		return -1;

	} else {

	  	printf("Successfully opened connection on port ");

		printf("%i\n", (int)(*com_port));

	}

	// set baud rate, etc. correctly

	struct termios options;

	if(tcgetattr(stream, &options))

		printf("Error getting attributes");

	cfsetispeed(&options, BAUD_RATE);

	cfsetospeed(&options, BAUD_RATE);

	//options.c_iflag &= ~ICRNL;

	//options.c_oflag &= ~OCRNL;

	//options.c_cflag |= (CLOCAL | CREAD);

	options.c_cflag &= ~PARENB; //no parity

	options.c_cflag &= ~CSTOPB; //one stop bit

	options.c_cflag &= ~CSIZE;

	options.c_cflag |= CS8; //8 bits

	//options.c_lflag &= ~ICANON;

	//options.c_cc[VMIN] = 1;

	//options.c_cc[VTIME] = 50;

	if (tcsetattr(stream, TCSANOW, &options))

	{

		printf("Error setting attributes.\n");

		return -1;

	}

	return 0;

}

/**

 * Listener function

 * At the moment, just prints out what it receives

 **/

static void* listen()

{

	char c;

	int count = 0;

	char buf[100];

	while (1)

	{

		if (read_char(&c) != 0) {

			printf("Listen failed.\n");

			return NULL;

		}

		printf("%c", c); fflush(stdout);

		if(c == '\0')

			break;

	}

	return NULL;

}

static int read_char(char* buf)

{

	if (read(stream, buf, 1) == -1) {

		printf("Failed to read.\r\n");

		return -1;

	}

	return 0;

}

/**

 * Put functions

 **/

static int put_string(char *str)

{

	if (write(stream, str, strlen(str)) == -1) {

		printf("Failed to write.\r\n");

		return -1;

	}

	return 0;

}

static int put_char(char c)

{

	if (write(stream, &c, 1) == -1) {

		printf("Failed to write.\r\n");

		return -1;

	}

	return 0;

}

#include <termios.h>

#include <fcntl.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <unistd.h>

int main(void);

int lib_init();

static void* listen();

static int read_char(char* buf);

static int put_string(char *str);

static int put_char(char c);

all:

	gcc server.c -o server

clean:

	rm server