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/*
* SerialCommunication.framework for iOS
* SerialCommunication.h
*
* Copyright (c) Yusuke Sekikawa, 11/06/02
* All rights reserved.
*
* BSD License
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
* - Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materia
* ls provided with the distribution.
* - Neither the name of the "Yuichi Yoshida" nor the names of its contributors may be u
* sed to endorse or promote products derived from this software without specific prior
* written permission.
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY E
* XPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES O
* F MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SH
* ALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENT
* AL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROC
* UREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS I
* NTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRI
* CT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF T
* HE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#import "SerialCommunication.h"

#import "serial.h"
#include <stdio.h>
#include <stdlib.h>
#include <termios.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>

@implementation SerialCommunication
@synthesize delegate;
-(BOOL)isDeviceConnected{
    return YES;
}
-(int)openSerialPort{

struct termios org_termios_s;
struct termios my_termios_s;
serialFD = -1;

// Open serial port
if((serialFD = open("/dev/tty.iap", O_RDWR | O_NOCTTY | O_NONBLOCK)) == -1) {
NSLog(@"open failed");
return serialFD;
    }
if(ioctl(serialFD, TIOCEXCL) == -1) {
NSLog(@"TIOCEXCL");
close(serialFD);
return serialFD;
    }
if(fcntl(serialFD, F_SETFL, 0) == -1) {
NSLog(@"clear O_NONBLOCK");
close(serialFD);
return serialFD;
}

// Get original termios
if(tcgetattr(serialFD, &org_termios_s) == -1) {
NSLog(@"get serial original termios");
close(serialFD);
return serialFD;
    }

// Make my termios
my_termios_s = org_termios_s;
cfmakeraw(&my_termios_s);
my_termios_s.c_iflag = 0;
my_termios_s.c_oflag = 0;
my_termios_s.c_cflag |= (CREAD|HUPCL);
my_termios_s.c_cflag &= ~CSTOPB;
my_termios_s.c_cc[VMIN] = 0; //can't detect modem hungups (cf. http://www.sbin.org/doc/unix-faq/programmer/faq_4.html#SEC60)
my_termios_s.c_cc[VTIME] = 0;
cfsetspeed(&my_termios_s, B9600);

// Change terminal settings
if(tcsetattr(serialFD, TCSANOW, &my_termios_s) == -1) {
NSLog(@"set my serial termios");
close(serialFD);
return false;
    }

// Success
return serialFD;
}


-(void)serialDataRecieved:(NSNumber*)uint32_tNum{
    [self.delegate serialDataRecieved:[uint32_tNum intValue]];
}
-(void)serialAlert:(NSString*)msg{
    [self.delegate serialAlert:msg];
}
-(int)sendSerialData:(uint32_t)data{
    return write(serialFD,&data,sizeof(uint32_t)); // Write 32bit
}
-(void)readSerialData{
NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
uint32_t data=0x00000000;

while (1) {
        data=0x00;
        if(serialFD<0){
            break;
        }
int len=read(serialFD,&data,sizeof(uint32_t)); // Read 32bit
if (len>0) {
/* read some charactor over serial */
[self performSelectorOnMainThread:@selector(serialDataRecieved:) withObject:[NSNumber numberWithInt:data] waitUntilDone:NO];
}
}
[pool release];
}



// TODO.
//In future update,this framework provide socket access from remote devece.
//
//- (void) startServer
//{
// NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
// socklen_t length;
// static struct sockaddr_in cli_addr;
// static struct sockaddr_in serv_addr;
//
// // Set up socket
// if((listenfd = socket(AF_INET, SOCK_STREAM,0)) <0)
// {
// isServing = NO;
// [self performSelectorOnMainThread:@selector(addLog:) withObject:[NSString stringWithFormat:@"(1)"] waitUntilDone:NO];
//
// return;
// }
//
// [self performSelectorOnMainThread:@selector(addLog:) withObject:[NSString stringWithFormat:@"(2)"] waitUntilDone:NO];
//
// // Serve to a random port
// serv_addr.sin_family = AF_INET;
// serv_addr.sin_addr.s_addr = htonl(INADDR_ANY);
// serv_addr.sin_port = 1234;
//
// // Bind
// if(bind(listenfd, (struct sockaddr *)&serv_addr,sizeof(serv_addr)) <0)
// {
// [self performSelectorOnMainThread:@selector(addLog:) withObject:[NSString stringWithFormat:@"(3)"] waitUntilDone:NO];
//
// isServing = NO;
// return;
// }
// [self performSelectorOnMainThread:@selector(addLog:) withObject:[NSString stringWithFormat:@"(4)"] waitUntilDone:NO];
//
//
// // Find out what port number was chosen.
// int namelen = sizeof(serv_addr);
// if (getsockname(listenfd, (struct sockaddr *)&serv_addr, (void *) &namelen) < 0) {
// [self performSelectorOnMainThread:@selector(addLog:) withObject:[NSString stringWithFormat:@"(5)"] waitUntilDone:NO];
//
// close(listenfd);
// isServing = NO;
// return;
// }
// // Listen
// if(listen(listenfd, 64) < 0)
// {
// [self performSelectorOnMainThread:@selector(addLog:) withObject:[NSString stringWithFormat:@"(6)"] waitUntilDone:NO];
//
// isServing = NO;
// return;
// }
//
// [self performSelectorOnMainThread:@selector(addLog:) withObject:[NSString stringWithFormat:@"(7)"] waitUntilDone:NO];
//
//
// length = sizeof(cli_addr);
// while (1) {
// if((socketfd = accept(listenfd, (struct sockaddr *)&cli_addr, &length)) < 0)
// {
// [self performSelectorOnMainThread:@selector(addLog:) withObject:[NSString stringWithFormat:@"(8)"] waitUntilDone:NO];
//
// isServing = NO;
// NSLog(@"accept failed");
// return;
// }else{
// [self performSelectorOnMainThread:@selector(addLog:) withObject:[NSString stringWithFormat:@"Connected With Client"] waitUntilDone:NO];
// isServing=YES;
// }
// }
// [pool release];
//}
- (id)init {
    serialFD=[self openSerialPort];
if(serialFD>0){
        [NSThread detachNewThreadSelector:@selector(readSerialData) toTarget:self withObject:nil];
        [self serialAlert:@"Open Serial Port Success!"];
        NSLog(@"Open Serial Port Success!");
        return [super init];
    }else{
        [self serialAlert:@"Open Serial Port Failed!"];
        NSLog(@"Open Serial Port Failed!");
        return nil;
    }
}

- (void)dealloc {
    close(serialFD);
    serialFD=-1;
    [super dealloc];
}
@end
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