C++ (Cpp) native_async_read_add_handler Examples

Example #1

File: netdev2_tap.c Project: francois-berder-imgtec/RIOT

static int _init(netdev2_t *netdev)
{
    DEBUG("%s:%s:%u\n", RIOT_FILE_RELATIVE, __func__, __LINE__);

    netdev2_tap_t *dev = (netdev2_tap_t*)netdev;

    /* check device parametrs */
    if (dev == NULL) {
        return -ENODEV;
    }

    char *name = dev->tap_name;
#ifdef __MACH__ /* OSX */
    char clonedev[255] = "/dev/"; /* XXX bad size */
    strncpy(clonedev + 5, name, 250);
#elif defined(__FreeBSD__)
    char clonedev[255] = "/dev/"; /* XXX bad size */
    strncpy(clonedev + 5, name, 250);
#else /* Linux */
    struct ifreq ifr;
    const char *clonedev = "/dev/net/tun";
#endif
    /* initialize device descriptor */
    dev->promiscous = 0;
    /* implicitly create the tap interface */
    if ((dev->tap_fd = real_open(clonedev, O_RDWR | O_NONBLOCK)) == -1) {
        err(EXIT_FAILURE, "open(%s)", clonedev);
    }
#if (defined(__MACH__) || defined(__FreeBSD__)) /* OSX/FreeBSD */
    struct ifaddrs *iflist;
    if (real_getifaddrs(&iflist) == 0) {
        for (struct ifaddrs *cur = iflist; cur; cur = cur->ifa_next) {
            if ((cur->ifa_addr->sa_family == AF_LINK) && (strcmp(cur->ifa_name, name) == 0) && cur->ifa_addr) {
                struct sockaddr_dl *sdl = (struct sockaddr_dl *)cur->ifa_addr;
                memcpy(dev->addr, LLADDR(sdl), sdl->sdl_alen);
                break;
            }
        }
        real_freeifaddrs(iflist);
    }
#else /* Linux */
    memset(&ifr, 0, sizeof(ifr));
    ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
    strncpy(ifr.ifr_name, name, IFNAMSIZ);
    if (real_ioctl(dev->tap_fd, TUNSETIFF, (void *)&ifr) == -1) {
        _native_in_syscall++;
        warn("ioctl TUNSETIFF");
        warnx("probably the tap interface (%s) does not exist or is already in use", name);
        real_exit(EXIT_FAILURE);
    }

    /* get MAC address */
    memset(&ifr, 0, sizeof(ifr));
    snprintf(ifr.ifr_name, sizeof(ifr.ifr_name), "%s", name);
    if (real_ioctl(dev->tap_fd, SIOCGIFHWADDR, &ifr) == -1) {
        _native_in_syscall++;
        warn("ioctl SIOCGIFHWADDR");
        if (real_close(dev->tap_fd) == -1) {
            warn("close");
        }
        real_exit(EXIT_FAILURE);
    }
    memcpy(dev->addr, ifr.ifr_hwaddr.sa_data, ETHERNET_ADDR_LEN);

    /* change mac addr so it differs from what the host is using */
    dev->addr[5]++;
#endif
    DEBUG("gnrc_tapnet_init(): dev->addr = %02x:%02x:%02x:%02x:%02x:%02x\n",
            dev->addr[0], dev->addr[1], dev->addr[2],
            dev->addr[3], dev->addr[4], dev->addr[5]);

    /* configure signal handler for fds */
    native_async_read_setup();
    native_async_read_add_handler(dev->tap_fd, NULL, _tap_isr);

#ifdef MODULE_NETSTATS_L2
    memset(&netdev->stats, 0, sizeof(netstats_t));
#endif
    DEBUG("gnrc_tapnet: initialized.\n");
    return 0;
}

Example #2

File: uart.c Project: LucaZulberti/RIOT

int uart_init(uart_t uart, uint32_t baudrate, uart_rx_cb_t rx_cb, void *arg)
{
    if (uart >= UART_NUMOF) {
        return UART_NODEV;
    }

    struct termios termios;

    memset(&termios, 0, sizeof(termios));

    termios.c_iflag = 0;
    termios.c_oflag = 0;
    termios.c_cflag = CS8 | CREAD | CLOCAL;
    termios.c_lflag = 0;

    speed_t speed;

    switch (baudrate) {
    case 0: speed = B0; break;
    case 50: speed = B50; break;
    case 75: speed = B75; break;
    case 110: speed = B110; break;
    case 134: speed = B134; break;
    case 150: speed = B150; break;
    case 200: speed = B200; break;
    case 300: speed = B300; break;
    case 600: speed = B600; break;
    case 1200: speed = B1200; break;
    case 1800: speed = B1800; break;
    case 2400: speed = B2400; break;
    case 4800: speed = B4800; break;
    case 9600: speed = B9600; break;
    case 19200: speed = B19200; break;
    case 38400: speed = B38400; break;
    case 57600: speed = B57600; break;
    case 115200: speed = B115200; break;
    case 230400: speed = B230400 ; break;
    default:
        return UART_NOBAUD;
        break;
    }

    cfsetospeed(&termios, speed);
    cfsetispeed(&termios, speed);

    tty_fds[uart] = real_open(tty_device_filenames[uart], O_RDWR | O_NONBLOCK);

    if (tty_fds[uart] < 0) {
        return UART_INTERR;
    }

    tcsetattr(tty_fds[uart], TCSANOW, &termios);

    uart_config[uart].rx_cb = rx_cb;
    uart_config[uart].arg = arg;

    native_async_read_setup();
    native_async_read_add_handler(tty_fds[uart], NULL, io_signal_handler);

    return UART_OK;
}