Revision 1085

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branches/diagnostics/computer-hub/comp-hub.c
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#include "comp-hub.h"
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// THESE ARE NOT SET CORRECTLY!
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// ALSO DON'T FORGET TO CHECK OUT
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// ATTRIBUTES ON LINES 39 ish TO 50 ish
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#define PORT_DEFAULT "/dev/ttyUSB0"
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#define INPUT_BAUD_RATE B9600
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#define OUTPUT_BAUD_RATE B9600
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static char* com_port = PORT_DEFAULT;
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static int stream;
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int main(void)
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{
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	if(lib_init() < 0)
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		printf("Exiting...\n");
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	//your code here
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	return 0;
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}
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int lib_init()
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{
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	stream = open(com_port, O_RDWR);
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	if (stream == -1)
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	{
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		printf("Failed to open connection on port ");
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		printf("%i\n", *com_port);
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		return -1;
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	} else {
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	  	printf("Successfully opened connection on port ");
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		printf("%i\n", (int)(*com_port));
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	}
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	// set baud rate, etc. correctly
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	struct termios options;
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	if(tcgetattr(stream, &options))
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		printf("Error getting attributes");
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	cfsetispeed(&options, INPUT_BAUD_RATE);
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	cfsetospeed(&options, OUTPUT_BAUD_RATE);
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	options.c_iflag &= ~ICRNL;
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	options.c_oflag &= ~OCRNL;
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	options.c_cflag |= (CLOCAL | CREAD);
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	options.c_cflag &= ~PARENB;
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	options.c_cflag &= ~CSTOPB;
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	options.c_cflag &= ~CSIZE;
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	options.c_cflag |= CS8;
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	options.c_lflag &= ~ICANON;
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	options.c_cc[VMIN] = 1;
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	options.c_cc[VTIME] = 50;
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	if (tcsetattr(stream, TCSANOW, &options))
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	{
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		printf("Error setting attributes.\n");
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		return -1;
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	}
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	return 0;
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}
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/**
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 * Listener function
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 * At the moment, just prints out what it receives
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 **/
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static void* listen()
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{
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	char c;
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	while (1)
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	{
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		if (read_char(&c) != 0) {
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			printf("Listen failed.\n");
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			return NULL;
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		}
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		printf("%c\n", c);
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		usleep(1000);
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	}
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	return NULL;
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}
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static int read_char(char* buf)
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{
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	if (read(stream, buf, 1) == -1) {
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		printf("Failed to read.\r\n");
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		return -1;
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	}
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	return 0;
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}
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/**
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 * Put functions
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 **/
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static int put_string(char *str)
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{
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	if (write(stream, str, strlen(str)) == -1) {
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		printf("Failed to write.\r\n");
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		return -1;
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	}
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	return 0;
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}
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static int put_char(char* c)
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{
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	if (write(stream, c, 1) == -1) {
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		printf("Failed to write.\r\n");
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		return -1;
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	}
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	return 0;
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}
branches/diagnostics/computer-hub/Makefile
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all:
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	gcc comp-hub.c -o comp-hub
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clean:
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	rm comp-hub
branches/diagnostics/computer-hub/comp-hub.h
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#include <termios.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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int main(void);
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int lib_init();
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static void* listen();
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static int read_char(char* buf);
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static int put_string(char *str);
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static int put_char(char* c);

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