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;

}