baseband

#import <Foundation/Foundation.h>
#import <termios.h>
#import <time.h>
#import <sys/ioctl.h>

NSString *sendATCommand(NSFileHandle *baseBand, NSString *atCommand){
    NSLog(@"SEND AT: %@", atCommand);
    [baseBand writeData:[atCommand dataUsingEncoding:NSASCIIStringEncoding]];
    NSMutableString *result = [NSMutableString string];
    NSData *resultData = [baseBand availableData];
    while ([resultData length]) {
        [result appendString:[[NSString alloc] initWithData:resultData encoding:NSASCIIStringEncoding]];
        if ([result hasSuffix:@"OK\r\n"]||[result hasSuffix:@"ERROR\r\n"]) {
            NSLog(@"RESULT: %@", result);
            return [NSString stringWithString:result];
        }
        else{
            resultData = [baseBand availableData];
        }
    }
    return nil;
}

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

    @autoreleasepool {
        
        NSFileHandle *baseBand = [NSFileHandle fileHandleForUpdatingAtPath:@"/dev/dlci.spi-baseband.extra_0"];
        if (baseBand == nil) {
            NSLog(@"Can't open baseband.");
        }
        
        int fd = [baseBand fileDescriptor];
        
        ioctl(fd, TIOCEXCL);
        fcntl(fd, F_SETFL, 0);
        
        static struct termios term;
        
        tcgetattr(fd, &term);
        
        cfmakeraw(&term);
        cfsetspeed(&term, 115200);
        term.c_cflag = CS8 | CLOCAL | CREAD;
        term.c_iflag = 0;
        term.c_oflag = 0;
        term.c_lflag = 0;
        term.c_cc[VMIN] = 0;
        term.c_cc[VTIME] = 0;
        tcsetattr(fd, TCSANOW, &term);
        
        //IMEI
        NSString *result = sendATCommand(baseBand, @"AT+CGSN\r");
        
        //IMSI
        result = sendATCommand(baseBand, @"AT+CIMI\r");
        
        //ICCID
        result = sendATCommand(baseBand, @"AT+CCID\r");
        
    }
    return 0;
}