/**
* Function: senddata
* Description: 串口客户端UDP发送数据的接口函数
* @param conn 当前UDP的连接
* @param serial_no UDP连接对应的串口号
* @param data_length 要发送的数据长度
**/
uint8_t senddata(struct udp_pcb *conn,uint8_t serial_no,uint32_t data_length) {
uint32_t send_length = 0;
struct pbuf *udp_data_packet;
uint32_t loc = 0;
err_t err_status;
do {
if(data_length >= UDP_MSS) {
send_length = UDP_MSS;
} else {
send_length = data_length;
}
udp_data_packet = pbuf_alloc(PBUF_RAW,send_length,PBUF_RAM);
if(!udp_data_packet){
printf("serial udp memory allocate\n\r");
return 0;
}
memset(udp_data_packet->payload,0,send_length);
memcpy(udp_data_packet->payload,&serial_client.client_queue_data_buf[serial_no][loc],send_length);
err_status = udp_send(conn,udp_data_packet);
loc += send_length;
data_length -= send_length;
if(udp_data_packet){
pbuf_free(udp_data_packet);
udp_data_packet = NULL;
}
} while(data_length > 0);
if(serial_client.client_queue_data_buf[serial_no]){
free(serial_client.client_queue_data_buf[serial_no]);
serial_client.client_queue_data_buf[serial_no] = NULL;
}
return 1;
}
void receive_tweet(char* buffer, struct sockaddr_in* server)
{
struct sockaddr_in client;
int transfered = 0, timeoutcount = 0;
/* Get message from message server */
if (!udp_send(sock, "Gimmeh!", server, sizeof(struct sockaddr_in)))
error_and_exit("Cannot send message to server", __FILE__, __LINE__);
do {
transfered = udp_receive(sock, buffer, BUFSIZE, &client, sizeof(client));
if (transfered == -1)
{
if (errno == EAGAIN || errno == EWOULDBLOCK)
{
++timeoutcount;
if (timeoutcount >= MAX_TIMEOUTS)
{
printf("Maximum timeouts exceeded. Server is considered dead.");
exit(0);
}
printf("Server timed out (%d).\n", timeoutcount);
}
error_and_exit("Cannot read from server", __FILE__, __LINE__);
}
else if (transfered == 0)
{
error_and_exit("Server has shut down", __FILE__, __LINE__);
}
} while (transfered <= 0);
if (server->sin_addr.s_addr != client.sin_addr.s_addr)
error_and_exit("Received message from unexpected server", __FILE__, __LINE__);
}
/**
* Send an RTP packet to a peer
*
* @param rs RTP Socket
* @param dst Destination address
* @param ext Extension bit
* @param marker Marker bit
* @param pt Payload type
* @param ts Timestamp
* @param mb Payload buffer
*
* @return 0 for success, otherwise errorcode
*/
int rtp_send(struct rtp_sock *rs, const struct sa *dst, bool ext,
bool marker, uint8_t pt, uint32_t ts, struct mbuf *mb)
{
size_t pos;
int err;
if (!rs || !mb)
return EINVAL;
if (mb->pos < RTP_HEADER_SIZE) {
DEBUG_WARNING("rtp_send: buffer must have space for"
" rtp header (pos=%u, end=%u)\n",
mb->pos, mb->end);
return EBADMSG;
}
mbuf_advance(mb, -RTP_HEADER_SIZE);
pos = mb->pos;
err = rtp_encode(rs, ext, marker, pt, ts, mb);
if (err)
return err;
if (rs->rtcp)
rtcp_sess_tx_rtp(rs->rtcp, ts, mbuf_get_left(mb));
mb->pos = pos;
return udp_send(rs->sock_rtp, dst, mb);
}
int main (void)
{
zctx_t *ctx = zctx_new ();
udp_t *udp = udp_new (PING_PORT_NUMBER);
byte buffer [PING_MSG_SIZE];
zmq_pollitem_t pollitems [] = {{ NULL, udp_handle (udp), ZMQ_POLLIN, 0 }};
// Send first ping right away
uint64_t ping_at = zclock_time ();
while (!zctx_interrupted) {
long timeout = (long) (ping_at - zclock_time ());
if (timeout < 0)
timeout = 0;
if (zmq_poll (pollitems, 1, timeout * ZMQ_POLL_MSEC) == -1)
break; // Interrupted
// Someone answered our ping
if (pollitems [0].revents & ZMQ_POLLIN)
udp_recv (udp, buffer, PING_MSG_SIZE);
if (zclock_time () >= ping_at) {
puts ("Pinging peers...");
buffer [0] = '!';
udp_send (udp, buffer, PING_MSG_SIZE);
ping_at = zclock_time () + PING_INTERVAL;
}
}
udp_destroy (&udp);
zctx_destroy (&ctx);
return 0;
}
/**
* Send some data on a RAW or UDP pcb contained in a netconn
* Called from netconn_send
*
* @param msg the api_msg_msg pointing to the connection
*/
void
do_send(struct api_msg_msg *msg)
{
if (!ERR_IS_FATAL(msg->conn->err)) {
if (msg->conn->pcb.tcp != NULL) {
switch (NETCONNTYPE_GROUP(msg->conn->type)) {
#if LWIP_RAW
case NETCONN_RAW:
if (msg->msg.b->addr == NULL) {
msg->conn->err = raw_send(msg->conn->pcb.raw, msg->msg.b->p);
} else {
msg->conn->err = raw_sendto(msg->conn->pcb.raw, msg->msg.b->p, msg->msg.b->addr);
}
break;
#endif
#if LWIP_UDP
case NETCONN_UDP:
if (msg->msg.b->addr == NULL) {
msg->conn->err = udp_send(msg->conn->pcb.udp, msg->msg.b->p);
} else {
msg->conn->err = udp_sendto(msg->conn->pcb.udp, msg->msg.b->p, msg->msg.b->addr, msg->msg.b->port);
}
break;
#endif /* LWIP_UDP */
default:
break;
}
}
}
TCPIP_APIMSG_ACK(msg);
}
// This is a very weird function, look at udpCheckReceiveFork() in matlab.c for the "why"
int udpmsg_receive(udpmsg *packet)
{
char recv_buf[MAXMSGLENGTH+10];
char senderIP[16]; // "xxx.xxx.xxx.xxx\0"
int ret = 0;
if(udp_check(0)) {
udp_read(recv_buf, sizeof(recv_buf), senderIP);
// printf("%s\n", senderIP);
// First if clause determines whether message is from Psychtoolbox
if (!strcmp(senderIP, macIP)) {
if(strlen(recv_buf)>10 && recv_buf[9]==' ' && strcmp(recv_buf,last_recv)!=0) {
strcpy(last_recv, recv_buf);
strncpy(packet->id, recv_buf, 9);
packet->id[9] = 0;
strcpy(packet->msg, recv_buf+10);
if (strcmp(packet->msg,"RECEIVED")==0)
packet->received = 1;
else if (strcmp(packet->msg,"EXECUTED")==0)
packet->executed = 1;
else {
/* if it is a new message confirm its receipt */
strcpy(recv_buf+10, "RECEIVED");
udp_send(recv_buf, macIP);
}
ret = 1;
}
}
}
return ret;
}
static void
do_send(struct api_msg_msg *msg)
{
if (msg->conn->pcb.tcp != NULL) {
switch (msg->conn->type) {
#if LWIP_RAW
case NETCONN_RAW:
raw_send(msg->conn->pcb.raw, msg->msg.p);
break;
#endif
#if LWIP_UDP
case NETCONN_UDPLITE:
/* FALLTHROUGH */
case NETCONN_UDPNOCHKSUM:
/* FALLTHROUGH */
case NETCONN_UDP:
udp_send(msg->conn->pcb.udp, msg->msg.p);
break;
#endif /* LWIP_UDP */
case NETCONN_TCP:
break;
}
}
sys_mbox_post(msg->conn->mbox, NULL);
}
int udp_broadcast (const char *address,
unsigned int port,
const paxos_message_t *message)
{
udp_client_t client;
int sock;
int ret;
if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0)
return(-1);
ret = 1;
if (setsockopt(sock, SOL_SOCKET, SO_BROADCAST, &ret, sizeof(int)) < 0) {
close(sock);
return(-1);
}
memset(&(client.addr), 0, sizeof(struct sockaddr_in));
client.addr.sin_family = AF_INET;
client.addr.sin_addr.s_addr = inet_addr(address);
//client.addr.sin_addr.s_addr = inet_addr("127.255.255.255");
//addr.sin_addr.s_addr = inet_addr("255.255.255.255");
client.addr.sin_port = htons(port);
client.addrlen = sizeof(struct sockaddr_in);
ret = udp_send(sock, &client, message);
close(sock);
return(ret != sizeof(paxos_message_t));
}
socket_error_t lwipv4_socket_send(struct socket *socket, const void * buf, const size_t len)
{
err_t err = ERR_VAL;
switch(socket->family) {
case SOCKET_DGRAM: {
struct pbuf *pb = pbuf_alloc(PBUF_TRANSPORT,len,PBUF_RAM);
socket_event_t e;
socket_api_handler_t handler = socket->handler;
err = pbuf_take(pb, buf, len);
if (err != ERR_OK)
break;
err = udp_send(socket->impl, pb);
pbuf_free(pb);
if (err != ERR_OK)
break;
//Notify the application that the transfer is queued at the MAC layer
e.event = SOCKET_EVENT_TX_DONE;
e.sock = socket;
e.i.t.sentbytes = len;
socket->event = &e;
handler();
socket->event = NULL;
break;
}
case SOCKET_STREAM:
err = tcp_write(socket->impl,buf,len,TCP_WRITE_FLAG_COPY);
break;
}
return lwipv4_socket_error_remap(err);
}
static err_t dhcp_release(struct dhcp_state *state)
{
err_t result;
u16_t msecs;
DEBUGF(DHCP_DEBUG, ("dhcp_release()\n"));
// and idle DHCP client
dhcp_set_state(state, DHCP_OFF);
// create and initialize the DHCP message header
result = dhcp_create_request(state);
if (result == ERR_OK)
{
dhcp_option(state, DHCP_OPTION_MESSAGE_TYPE, DHCP_OPTION_MESSAGE_TYPE_LEN);
dhcp_option_byte(state, DHCP_RELEASE);
dhcp_option_trailer(state);
pbuf_realloc(state->p_out, sizeof(struct dhcp_msg) - DHCP_OPTIONS_LEN + state->options_out_len);
udp_bind(state->pcb, IP_ADDR_ANY, DHCP_CLIENT_PORT);
udp_connect(state->pcb, &state->server_ip_addr, DHCP_SERVER_PORT);
udp_send(state->pcb, state->p_out);
dhcp_delete_request(state);
}
state->tries++;
msecs = state->tries < 10 ? state->tries * 1000 : 10 * 1000;
state->request_timeout = (msecs + DHCP_FINE_TIMER_MSECS - 1) / DHCP_FINE_TIMER_MSECS;
DEBUGF(DHCP_DEBUG, ("dhcp_release(): request timeout %u msecs\n", msecs));
// remove IP address from interface
netif_set_ipaddr(state->netif, IP_ADDR_ANY);
netif_set_gw(state->netif, IP_ADDR_ANY);
netif_set_netmask(state->netif, IP_ADDR_ANY);
return result;
}
/**
* Function: send_packet
* Description: 向NTP服务器发送NTP数据包，请求时间更新
* @param usd 标志位，目前统一使用1
**/
int send_packet(int usd) {
//char ntp_header[200];
struct pbuf *ntp_packet;
err_t err_result;
memset(&ntp_client,0,sizeof(ntp_client));
ntp_packet = pbuf_alloc(PBUF_RAW,sizeof(ntp_client),PBUF_RAM);
if(!ntp_packet){
printf("ntp pbuf allocate failed\n\r");
return -1;
}
NTP_Init();
memset(ntp_packet->payload,0,sizeof(ntp_client));
memcpy(ntp_packet->payload,(void*)&ntp_client,sizeof(ntp_client));
/*客户端给服务器端发送NTP协议数据包*/
err_result = udp_send(ntp_udp_client,ntp_packet);
if(err_result == ERR_OK){ //数据发送成功
//释放pbuf空间
pbuf_free(ntp_packet);
}else{
printf("ntp packet send failed\n\r");
return -1;
}
is_open_ntp_request_timer = 1;
ntp_send_request_time = sCount;
//printf("NTP request has sent over\n\r");
}
// decline a
static err_t dhcp_decline(struct dhcp_state *state)
{
err_t result = ERR_OK;
u16_t msecs;
DEBUGF(DHCP_DEBUG, ("dhcp_decline()\n"));
dhcp_set_state(state, DHCP_BACKING_OFF);
// create and initialize the DHCP message header
result = dhcp_create_request(state);
if (result == ERR_OK)
{
dhcp_option(state, DHCP_OPTION_MESSAGE_TYPE, DHCP_OPTION_MESSAGE_TYPE_LEN);
dhcp_option_byte(state, DHCP_DECLINE);
dhcp_option(state, DHCP_OPTION_MAX_MSG_SIZE, DHCP_OPTION_MAX_MSG_SIZE_LEN);
dhcp_option_short(state, 576);
dhcp_option_trailer(state);
// resize pbuf to reflect true size of options
pbuf_realloc(state->p_out, sizeof(struct dhcp_msg) - DHCP_OPTIONS_LEN + state->options_out_len);
udp_bind(state->pcb, IP_ADDR_ANY, DHCP_CLIENT_PORT);
udp_connect(state->pcb, &state->server_ip_addr, DHCP_SERVER_PORT);
udp_send(state->pcb, state->p_out);
dhcp_delete_request(state);
}
state->tries++;
msecs = 10*1000;
state->request_timeout = (msecs + DHCP_FINE_TIMER_MSECS - 1) / DHCP_FINE_TIMER_MSECS;
DEBUGF(DHCP_DEBUG, ("dhcp_decline(): request timeout %u msecs\n", msecs));
return result;
}
/*
* 函数名：updd_Send
* 描述 ：发送udp数据包
* 输入 ：无
* 输出 : 无
* 调用 ：外部调用
*/
void udpd_Send(void)
{
struct udp_pcb *UdpPcb;
struct ip_addr ipaddr;
struct pbuf *p;
err_t err = ERR_Mine; //测试用
p = pbuf_alloc(PBUF_RAW,sizeof(UDPData),PBUF_RAM);
p->payload=(void *)UDPData;
UdpPcb = udp_new();
udp_bind(UdpPcb,IP_ADDR_ANY,6000); /* 绑定本地IP 地址 */
IP4_ADDR(&ipaddr,192,168,1,122);
err = udp_connect(UdpPcb,&ipaddr,6001); /* 连接远程主机 */
if(err == ERR_OK)
{
err = ERR_Mine; //测试用
err = udp_send(UdpPcb, p);
}
udp_disconnect(UdpPcb);
pbuf_free(p);
udp_remove(UdpPcb);
}
int main(int argc, char** argv){
if(argc != 4 && argc != 2){
printf("\nSYTAX: <(s)end/(r)ecv> xxx.xxx.xxx.xxx \"Message (if sending)\"");
exit(0);
}
if(argv[1][0] == 's'){
char *addr;
char *msg;
size_t msg_len = strlen(argv[3])+1;
int add_len = strlen(argv[2]);
msg=malloc(msg_len);
strcpy(msg,argv[3]);
addr = malloc(add_len);
memcpy(addr,argv[2],add_len);
udp_send(addr,d_port,d_port,&msg,&msg_len);
}
else if (argv[1][0] == 'r'){
size_t size;
size = (size_t) 512;
char* msg;
msg = malloc(size);
udp_listen(d_port,&msg,size);
printf("Received : \n%s",msg);
}
return 0;
}
int mgcp_send_dummy(struct mgcp_endpoint *endp)
{
static char buf[] = { DUMMY_LOAD };
return udp_send(endp->net_end.rtp.fd, &endp->net_end.addr,
endp->net_end.rtp_port, buf, 1);
}
void client_init(void)
{
struct udp_pcb *upcb;
struct pbuf *p;
SET_IP4_ADDR(&ip_udp_server,UDP_SERVER_IP);
/* Create a new UDP control block */
upcb = udp_new();
p = pbuf_alloc(PBUF_TRANSPORT, sizeof(Sent), PBUF_RAM);
p->payload = (void*)Sent;
upcb->local_port = 5;
udp_connect(upcb, &ip_udp_server, UDP_SERVER_PORT);
udp_send(upcb, p);
/* Reset the upcb */
udp_disconnect(upcb);
/* Bind the upcb to any IP address and the UDP_PORT port*/
udp_bind(upcb, IP_ADDR_ANY, 5);
udp_recv(upcb, udp_client_callback, NULL);
/* Free the p buffer */
pbuf_free(p);
}
void *_send(void *args)
{
(void) args;
msg_init_queue(_send_msg_queue, MAIN_QUEUE_SIZE);
char *arg[4];
char *cmd = "udp_send";
char *dst = "abcd::1";
char *port = "8888";
char rank[12];
arg[0] = cmd;
arg[1] = dst;
arg[2] = port;
while(1) {
xtimer_sleep(2);
if (gnrc_rpl_instances[0].state && gnrc_rpl_instances[0].dodag.my_rank == GNRC_RPL_ROOT_RANK) {
return NULL;
}
if (gnrc_rpl_instances[0].state) {
memset(rank, 0, sizeof(rank));
sprintf(rank, "%u", gnrc_rpl_instances[0].dodag.my_rank);
arg[3] = rank;
udp_send(4, arg);
}
}
return NULL;
}
extern int send_rescueack(unsigned short no, unsigned short lo)
{
ebuf_t *buf = NULL;
int acksocket;
char tftpnull;
int res, i;
/*
* Open a UDP socket to the TFTP server
*/
acksocket = udp_socket(UDP_PROTO_TFTP);
res = udp_bind(acksocket, 69);
if (res < 0) {
return res;
}
udp_connect(acksocket, ackport);
for (i = 0; i < 1; i++) {
buf = udp_alloc();
if (!buf)
return -1;
/*
* Send the data
*/
ebuf_append_u16_be(buf, no);
ebuf_append_u16_be(buf, lo);
ebuf_append_bytes(buf,&tftpnull, 0);
udp_send(acksocket ,buf, tftpipto);
}
if (buf)
udp_free(buf);
udp_close(acksocket);
return 0;
}
void mdns_probe()
{
len_self = _update_hook_self(config.name);
len_instance = _update_hook_instance(config.name);
len_arpa = _update_hook_arpa(config.comm.ip);
int i;
for(i=0; i<3; i++)
{
uint8_t *head = BUF_O_OFFSET(buf_o_ptr);
uint8_t *tail = head;
uint16_t id = rand() & 0xffff;
tail = _serialize_query(tail, id, MDNS_FLAGS_AA, 0, 1, 0, 0);
tail = _serialize_question(tail, hook_self, MDNS_TYPE_ANY, MDNS_CLASS_INET);
udp_send(config.mdns.socket.sock, BUF_O_BASE(buf_o_ptr), tail-head);
// wait 250ms second
uint32_t tick = systick_uptime();
while(systick_uptime() - tick < SNTP_SYSTICK_RATE / 4)
;
//FIXME listen for collisions with hook_self
}
}
static int _tftp_close(tftp_info_t *info)
{
ebuf_t *buf;
const char *emsg = "transfer cancelled"; /* some error message */
if (info->tftp_socket == -1) return 0;
if (info->tftp_filemode == FILE_MODE_READ) {
buf = udp_alloc();
if (buf) {
/* If we're on the EOF packet, just send an ack */
if (info->tftp_lastblock) {
ebuf_append_u16_be(buf,TFTP_OP_ACK);
ebuf_append_u16_be(buf,info->tftp_blknum);
}
else {
ebuf_append_u16_be(buf,TFTP_OP_ERROR);
ebuf_append_u16_be(buf,TFTP_ERR_DISKFULL);
ebuf_append_bytes(buf,emsg,strlen(emsg)+1);
}
udp_send(info->tftp_socket,buf,info->tftp_ipaddr);
}
}
else {
/* Just flush out the remaining write data, if any */
_tftp_writemore(info);
}
udp_close(info->tftp_socket);
info->tftp_socket = -1;
return 0;
}
// Helper function for send/sendto to handle UDP packets.
STATIC mp_uint_t lwip_udp_send(lwip_socket_obj_t *socket, const byte *buf, mp_uint_t len, byte *ip, mp_uint_t port, int *_errno) {
if (len > 0xffff) {
// Any packet that big is probably going to fail the pbuf_alloc anyway, but may as well try
len = 0xffff;
}
// FIXME: maybe PBUF_ROM?
struct pbuf *p = pbuf_alloc(PBUF_TRANSPORT, len, PBUF_RAM);
if (p == NULL) {
*_errno = ENOMEM;
return -1;
}
memcpy(p->payload, buf, len);
err_t err;
if (ip == NULL) {
err = udp_send(socket->pcb.udp, p);
} else {
ip_addr_t dest;
IP4_ADDR(&dest, ip[0], ip[1], ip[2], ip[3]);
err = udp_sendto(socket->pcb.udp, p, &dest, port);
}
pbuf_free(p);
if (err != ERR_OK) {
*_errno = error_lookup_table[-err];
return -1;
}
return len;
}
static void
pxudp_pcb_forward_inbound(struct pxudp *pxudp)
{
struct pbuf *p;
u32_t timo;
err_t error;
if (!sys_mbox_valid(&pxudp->inmbox)) {
return;
}
timo = sys_mbox_tryfetch(&pxudp->inmbox, (void **)&p);
if (timo == SYS_MBOX_EMPTY) {
return;
}
error = udp_send(pxudp->pcb, p);
if (error != ERR_OK) {
DPRINTF(("%s: udp_send(pcb %p) err %d\n",
__func__, (void *)pxudp, error));
}
pbuf_free(p);
/*
* If we enabled counting in pxudp_pcb_forward_outbound() check
* that we have (all) the reply(s).
*/
if (pxudp->count > 0) {
--pxudp->count;
if (pxudp->count == 0) {
pxudp_pcb_expired(pxudp);
}
}
}
int udp_send_all(int socket, struct in_addr *iface, const struct sockaddr* to, int to_len, int out_len)
{
struct ifconf ifc;
char buf[1024] = { 0 };
struct ifreq *ifr = 0;
struct in_addr from;
int i;
int rc = 0;
char ip[64];
/* Send through all interfaces */
ifc.ifc_len = sizeof(buf);
ifc.ifc_buf = buf;
ioctl(socket, SIOCGIFCONF, &ifc);
ifr = ifc.ifc_req;
for(i=0; i<(ifc.ifc_len/sizeof(*ifr)); i++) {
from.s_addr = ((struct sockaddr_in *)&ifr[i].ifr_addr)->sin_addr.s_addr;
if (iface->s_addr != INADDR_ANY && iface->s_addr != from.s_addr)
continue;
if (udp_send(socket, from, to, to_len, out_len) == 1) {
inet_ntop(AF_INET, &from.s_addr, ip, sizeof(ip));
wsdd_log(LOG_ERR, "Failed to send udp from %s\n", ip);
rc = -1;
}
}
return rc;
}
/* send one packet (heartbeat) */
int send_packet(void)
{
static long sequence;
auto char buf[128];
auto int length, retval;
#GLOBAL_INIT
{
sequence = 0;
}
/* fill the packet with interesting data (a sequence number) */
sequence++;
sprintf(buf, "SEQ=%ld",sequence);
length = strlen(buf) + 1;
/* send the packet */
retval = udp_send(&sock, buf, length);
if (retval < 0) {
printf("Error sending datagram! Closing and reopening socket...\n");
if (sequence == 1) {
printf(" (initial ARP request may not have finished)\n");
}
sock_close(&sock);
if(!udp_open(&sock, LOCAL_PORT, resolve(REMOTE_IP), REMOTE_PORT, NULL)) {
printf("udp_open failed!\n");
exit(0);
}
}
tcp_tick(NULL);
return 1;
}
static int msg_treatment(void)
{
int err = 0, msg_t = 0, i = 0;
char path[MAXLEN], *msg;
msg_st requete;
MD5_CTX context;
unsigned char md[MD5_DIGEST_LENGTH];
char mdascii[2*MD5_DIGEST_LENGTH+1];
char alert_msg[MAXLEN] = { "" };
/* receive message from mailbox */
err = msgrcv(file_id, &requete, sizeof(msg_st),
TYPE_DTH_ASYNCH, 0);
if (err < 0) {
printf("message can't be received (%s)\n",
strerror(err));
return -1;
}
msg = malloc(strlen(addr_interface_s) + MD5_SIZE +
strlen(requete.message) * sizeof(char));
/* extract path and message type */
sscanf(requete.message, "%s %d %254c", path, &msg_t, alert_msg);
printf("msg received => %s",requete.message);
if (debug)
printf("extract path=> %s\nextract message type=>%d\nalert notification=>%s\n", path, msg_t,alert_msg);
/* compute MD5 */
MD5_Init(&context);
MD5_Update(&context, path, strlen(path));
MD5_Final(md, &context);
/* Convert raw valure to ascii */
memset(mdascii, 0, 2*MD5_DIGEST_LENGTH);
for(i=0; i < MD5_DIGEST_LENGTH; i++)
{
sprintf(&(mdascii[i*2]), "%02x", md[i] );
}
/* create message */
sprintf(msg, "%s %s %s %s", addr_interface_s, mdascii, msg_type[msg_t],alert_msg);
if (debug)
printf("msg %s\n", msg);
/*send message */
if (debug)
printf("send msg %s\n", msg);
err = udp_send(msg);
if (err < 0)
printf("broadcast error, message can't be send (%s)\n",
strerror(err));
free(msg);
return 0;
}
int main(int argc, char** argv){
parse_args(argc, argv);
if(print_usage_flag) {
print_usage();
return 0;
}
init();
short accel[3], gyro[3], sensors[1];
long quat[4];
unsigned long timestamp;
unsigned char more[0];
struct pollfd fdset[1];
char buf[1];
// File descriptor for the GPIO interrupt pin
int gpio_fd = open(GPIO_INT_FILE, O_RDONLY | O_NONBLOCK);
// Create an event on the GPIO value file
memset((void*)fdset, 0, sizeof(fdset));
fdset[0].fd = gpio_fd;
fdset[0].events = POLLPRI;
while (1){
// Blocking poll to wait for an edge on the interrupt
if(!no_interrupt_flag) {
poll(fdset, 1, -1);
}
if (no_interrupt_flag || fdset[0].revents & POLLPRI) {
// Read the file to make it reset the interrupt
if(!no_interrupt_flag) {
read(fdset[0].fd, buf, 1);
}
int fifo_read = dmp_read_fifo(gyro, accel, quat, ×tamp, sensors, more);
if (fifo_read != 0) {
//printf("Error reading fifo.\n");
continue;
}
float angles[NOSENTVALS];
rescale_l(quat, angles+9, QUAT_SCALE, 4);
// rescale the gyro and accel values received from the IMU from longs that the
// it uses for efficiency to the floats that they actually are and store these values in the angles array
rescale_s(gyro, angles+3, GYRO_SCALE, 3);
rescale_s(accel, angles+6, ACCEL_SCALE, 3);
// turn the quaternation (that is already in angles) into euler angles and store it in the angles array
euler(angles+9, angles);
if(!silent_flag && verbose_flag) {
printf("Yaw: %+5.1f\tPitch: %+5.1f\tRoll: %+5.1f\n", angles[0]*180.0/PI, angles[1]*180.0/PI, angles[2]*180.0/PI);
}
// send the values in angles over UDP as a string (in udp.c/h)
if(!no_broadcast_flag) {
udp_send(angles, 13);
}
}
}
}
int main() {
int fd = udp_init_broadcast(8887);
char *sendtext = "UDP Test\n";
printf("Sending text:\n%s\n", sendtext);
udp_send(fd, sendtext, strlen(sendtext));
udp_close(fd);
return 0;
}
void provSendPacket(const void* buffer, int len)
{
struct pbuf* p;
p = pbuf_alloc(PBUF_RAW, len, PBUF_POOL);
pbuf_take(p, buffer, len);
udp_send(eth_udppcb, p);
pbuf_free(p);
}
int main(int argc, char *argv[])
{
if(argc < 2)
{
printf("Usage ./main MD1AC44200003128\n");
return EXIT_FAILURE;
}
int prev_value = 100;
int recent_value = 1;
FILE* stream;
char request[1024], buf[1024], json[1024];
stream = fopen("config.ini", "r");
fread(buf, sizeof(char), sizeof(buf), stream);
fclose(stream);
printf("Bulb: %s\n", argv[1]);
while(1)
{
sprintf(request, "https://io.adafruit.com/api/feeds/qstation?x-aio-key=%s", buf);
recent_value = http_request(request);
if(prev_value != 100 && recent_value != prev_value)
{
if(recent_value == 2)
{
printf("Turn bulb off.\n");
sprintf(json, "{\"iswitch\":\"0\",\"r\":\"255\",\"g\":\"255\",\"b\":\"255\",\"bright\":\"20\",\"cmd\":\"light_ctrl\",\"effect\":\"9\",\"sn_list\":[{\"sn\":\"%s\"}]}", argv[1]);
udp_send(json);
}
else if(recent_value == 3)
{
printf("Turn bulb on.\n");
sprintf(json, "{\"iswitch\":\"1\",\"r\":\"255\",\"g\":\"255\",\"b\":\"255\",\"bright\":\"20\",\"cmd\":\"light_ctrl\",\"effect\":\"9\",\"sn_list\":[{\"sn\":\"%s\"}]}", argv[1]);
udp_send(json);
}
else printf("ERROR: Unknown value.\n");
}
prev_value = recent_value;
sleep(10);
}
return EXIT_SUCCESS;
}
inline
int udp_send(udp_sock& sock, const std::vector<char>& msg)
{
if(msg.size() == 0)
return 0;
return udp_send(sock, &msg[0], msg.size());
}