int create_socket(void)
{
Msg msg_head;
int server_sockfd;
int len;
int sin_size;
char buf[SIZE];
struct sockaddr_in server_addr;
struct sockaddr_in client_addr;
memset(&server_addr, 0, sizeof(server_addr));
server_addr.sin_family = AF_INET; //设置为IP通信
server_addr.sin_addr.s_addr = INADDR_ANY; //无限制
server_addr.sin_port = htons(8000);
if ((server_sockfd = socket(PF_INET,SOCK_DGRAM,0)) < 0) {
ERROR("socket error\n");
return -1;
}
if(bind(server_sockfd, (struct sockaddr *)&server_addr,
sizeof(struct sockaddr)) < 0) {
ERROR("bind error\n");
return -1;
}
sin_size = sizeof(struct sockaddr_in);
INFO("waiting for packet......\n");
bzero(buf, SIZE);
for(;;) {
/* 接收消息*/
if((len = recvfrom(server_sockfd, buf, SIZE, 0,
(struct sockaddr*)&client_addr, &sin_size)) < 0) {
ERROR("receive packet error\n");
return -1;
}
INFO("received packet from %s\n",inet_ntoa(client_addr.sin_addr));
/* 消息处理
* 解析消息头
* 分发消息
* */
memcpy(&msg_head, buf, sizeof(msg_head));
switch(msg_head.MsgId) {
/* 板卡状态*/
case PC_ARM_CHECK_MACHINE_STAT_REQ:
get_machine_stat(buf);
break;
/* 寄存器操作请求*/
case PC_ARM_REGISTER_RW_REQ:
register_xfer(buf);
break;
/* 软件更新 */
case PC_ARM_SOFTWARE_UPDATE_REQ:
sw_update(buf);
break;
/* EEPROM */
case PC_ARM_EEPROM_RW_REQ:
eeprom_xfer(buf);
break;
/* GPRS短信息*/
case PC_ARM_SEND_GPRS_MESSAGE_REQ:
send_gprs_message_req(buf);
break;
/* 发送ZIGBEE信息*/
case PC_ARM_SEND_ZIGBEE_MESSAGE_REQ:
send_zigbee_message_req(buf);
break;
/* 报警器控制*/
case PC_ARM_BEEP_CONTROL_REQ:
beep_control_req(buf);
break;
/* LED控制*/
case PC_ARM_LEDS_CONTROL_REQ:
led_control_req(buf);
break;
/* 硬件自检*/
case PC_ARM_HARDWARE_TESTSELF_REQ:
hardware_selftest_req(buf);
break;
/* 时间校准*/
case PC_ARM_TIME_ADJUST_REQ:
time_adjust(buf);
break;
}
/* 反馈消息*/
if(sendto(server_sockfd, buf, len, 0,
(struct sockaddr *)&client_addr, sin_size) < 0) {
ERROR("send packet error\n");
return -1;
}
}
}
/*-------------------------------------------------------------+
| Display a table of Dawn and Dusk for the year. |
| Argument sunmode indicates the definition of Dawn and Dusk: |
| 0 -> Rise and Set |
| 1 -> Civil Twilight |
| 2 -> Nautical Twilight |
| 3 -> Astronomical Twilight |
+-------------------------------------------------------------*/
int display_sun_table ( FILE *fd_sun, int year, long timezone,
int sunmode, int offset, int timemode, int lat_d, int lat_m, int lon_d, int lon_m )
{
static struct tzones {
char *name;
long seconds;
} us_tzones[] = {
{"Atlantic", 14400 },
{"Eastern", 18000 },
{"Central", 21600 },
{"Mountain", 25200 },
{"Pacific", 28800 },
{"Alaska", 32400 },
{"Hawaii-Aleutian", 36000 },
{"Samoa", 39600 },
{"Wake Island", -43200 },
{"Guam", -39600 },
};
static int n_tzones = ( sizeof(us_tzones) / sizeof(struct tzones) );
static int mdays[] = {0,31,28,31,30,31,30,31,31,30,31,30,31};
int time_adjust ( int, int, unsigned char );
long julianday, julianday0;
int j, month, day, yday, half ;
int rise, set, scode;
int retcode;
char tmark = ' ';
char minibuf[64];
char *timename;
double latitude, longitude;
get_dst_info(year);
timename = ( timemode == TIMEMODE_CIVIL ) ? "Civil" : "Standard";
latitude = (lat_d < 0) ? (double)lat_d - (double)lat_m / 60. :
(double)lat_d + (double)lat_m / 60. ;
longitude = (lon_d < 0) ? (double)lon_d - (double)lon_m / 60. :
(double)lon_d + (double)lon_m / 60. ;
julianday0 = greg2jd(year, 1, 1);
if ( greg2jd(year + 1, 1, 1) - julianday0 == 366 )
mdays[2] = 29;
else
mdays[2] = 28;
switch (sunmode) {
case RiseSet :
sprintf(minibuf, "Sunrise and Sunset for %d\n", year);
break;
case CivilTwi :
sprintf(minibuf, "Civil Twilight for %d\n", year);
break;
case NautTwi :
sprintf(minibuf, "Nautical Twilight for %d\n", year);
break;
case AstroTwi :
sprintf(minibuf, "Astronomical Twilight for %d\n", year);
break;
case AngleOffset :
sprintf(minibuf, "Sun centre at %d angle minutes below horizon for %d\n", offset, year);
break;
};
fprintf(fd_sun, "%*s%s", (80 - (int)strlen(minibuf))/2, " ", minibuf);
(void) fprintf(fd_sun, "\nLocation: ");
(void) fprintf(fd_sun, "%s%03d:%02d,",
longitude < 0 ? "W" : "E", abs(lon_d), abs(lon_m));
(void) fprintf(fd_sun, " %s%02d:%02d",
latitude < 0 ? "S" : "N", abs(lat_d), abs(lat_m));
for ( j = 0; j < n_tzones; j++ ) {
if ( us_tzones[j].seconds == timezone )
break;
}
if ( j < n_tzones )
(void) fprintf(fd_sun, " US/%s %s Time\n\n", us_tzones[j].name, timename);
else
(void) fprintf(fd_sun, " Timezone: %.1fh %s of Greenwich - %s Time\n\n",
(double)abs(timezone)/3600., (timezone < 0 ? "East" : "West"), timename );
for ( half = 0; half < 2; half++ ) {
if ( half == 0 )
(void) fprintf(fd_sun, " Jan Feb Mar Apr May Jun\n");
else
(void) fprintf(fd_sun, "\n\n Jul Aug Sep Oct Nov Dec\n");
if ( sunmode == 0 ) {
fprintf(fd_sun, "Day Rise Set");
for ( month = 2; month <= 6; month++ )
fprintf(fd_sun, " Rise Set");
fprintf(fd_sun, "\n ");
}
else {
fprintf(fd_sun, "Day Morn Eve");
for ( month = 2; month <= 6; month++ )
fprintf(fd_sun, " Morn Eve");
fprintf(fd_sun, "\n ");
}
for ( month = 1; month <= 6; month++ )
(void) fprintf(fd_sun, " hh:mm hh:mm");
scode = NORMAL_SUN;
for ( day = 1; day < 32; day++ ) {
(void) fprintf(fd_sun, "\n%02d", day);
for ( month = 6 * half + 1; month <= 6 * half + 6; month++ ) {
if ( day > mdays[month] ) {
(void) fprintf(fd_sun, " ");
continue;
}
julianday = greg2jd( year, month, day );
yday = (int)(julianday - julianday0);
retcode = suntimes(latitude, longitude, timezone, julianday,
sunmode, offset, &rise, &set, NULL, NULL );
if ( timemode == TIMEMODE_CIVIL ) {
/* Adjust times for Daylight Time */
if ( retcode == NORMAL_SUN || retcode == NO_SUNSET ) {
rise += time_adjust(yday, rise, LGL2STD);
if ( rise < 0 || rise > 1439 )
retcode = NO_SUNRISE;
}
if ( retcode == NORMAL_SUN || retcode == NO_SUNRISE ) {
set += time_adjust(yday, set, LGL2STD);
if ( set < 0 || set > 1439 )
retcode = NO_SUNSET;
}
/* Mark day of time change */
tmark = (yday == 0 ||
time_adjust(yday, 720, LGL2STD) == time_adjust(yday - 1, 720, LGL2STD)) ? ' ' : '*';
}
scode |= retcode;
switch ( retcode ) {
case DOWN_ALL_DAY :
(void) fprintf(fd_sun, " %c----- -----", tmark);
break ;
case UP_ALL_DAY :
(void) fprintf(fd_sun, " %c***** *****", tmark);
break ;
case NO_SUNRISE :
(void) fprintf(fd_sun, " %c %02d:%02d", tmark, set/60, set % 60);
break ;
case NO_SUNSET :
(void) fprintf(fd_sun, " %c%02d:%02d ", tmark, rise/60, rise%60);
break ;
default :
(void) fprintf(fd_sun, " %c%02d:%02d %02d:%02d",
tmark, rise/60, rise%60, set/60,set%60 );
}
}
}
}
if ( timemode == TIMEMODE_CIVIL ) {
(void) fprintf(fd_sun, "\n\n(*) Denotes time change");
}
else {
(void) fprintf(fd_sun, "\n\nAdd offset for Daylight Time (usually +60 minutes) if and when in effect.");
}
if ( scode & (DOWN_ALL_DAY | UP_ALL_DAY) ) {
(void) fprintf(fd_sun, "\n\n(*****) Sun continuously above horizon");
(void) fprintf(fd_sun, "%*s(-----) Sun continuously below horizon", 4, " ");
}
(void) fprintf(fd_sun, "\n");
return 0;
}