mirror of
https://github.com/clockworkpi/PicoCalc.git
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184 lines
8.6 KiB
C
184 lines
8.6 KiB
C
/***********************************************************************************************************************
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PicoMite MMBasic
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custom.c
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<COPYRIGHT HOLDERS> Geoff Graham, Peter Mather
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Copyright (c) 2021, <COPYRIGHT HOLDERS> All rights reserved.
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Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer
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in the documentation and/or other materials provided with the distribution.
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3. The name MMBasic be used when referring to the interpreter in any documentation and promotional material and the original copyright message be displayed
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on the console at startup (additional copyright messages may be added).
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4. All advertising materials mentioning features or use of this software must display the following acknowledgement: This product includes software developed
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by the <copyright holder>.
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5. Neither the name of the <copyright holder> nor the names of its contributors may be used to endorse or promote products derived from this software
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without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY <COPYRIGHT HOLDERS> AS IS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDERS> BE LIABLE FOR ANY DIRECT,
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INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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************************************************************************************************************************/
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#include "MMBasic_Includes.h"
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#include "Hardware_Includes.h"
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NTP_T *NTPstate=NULL;
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#define NTP_SERVER "pool.ntp.org"
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#define NTP_MSG_LEN 48
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#define NTP_PORT 123
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#define NTP_DELTA 2208988800 // seconds between 1 Jan 1900 and 1 Jan 1970
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#define NTP_TEST_TIME (30 * 1000)
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#define NTP_RESEND_TIME (10 * 1000)
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volatile time_t timeadjust=0;
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volatile uint8_t seconds_buf[4] = {0};
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// Called with results of operation
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static void ntp_result(NTP_T* state, int status, time_t *result) {
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if (status == 0 && result) {
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int year, month, day, hour, minute, second;
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*result=*result+timeadjust;
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struct tm *utc = gmtime(result);
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char buff[STRINGSIZE]={0};
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sprintf(buff,"got ntp response: %02d/%02d/%04d %02d:%02d:%02d\r\n", utc->tm_mday, utc->tm_mon + 1, utc->tm_year + 1900,
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utc->tm_hour, utc->tm_min, utc->tm_sec);
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if(!optionsuppressstatus)MMPrintString(buff);
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// mT4IntEnable(0);
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hour = utc->tm_hour;
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minute = utc->tm_min;
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second = utc->tm_sec;
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day_of_week=utc->tm_wday;
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if(day_of_week==0)day_of_week=7;
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year = utc->tm_year + 1900;
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month = utc->tm_mon + 1;
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day = utc->tm_mday;
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// mT4IntEnable(1);
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TimeOffsetToUptime=get_epoch(year, month, day, hour, minute, second)-time_us_64()/1000000;
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}
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}
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//static int64_t ntp_failed_handler(alarm_id_t id, void *user_data);
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// Make an NTP request
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static void ntp_request(NTP_T *state) {
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// cyw43_arch_lwip_begin/end should be used around calls into lwIP to ensure correct locking.
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// You can omit them if you are in a callback from lwIP. Note that when using pico_cyw_arch_poll
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// these calls are a no-op and can be omitted, but it is a good practice to use them in
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// case you switch the cyw43_arch type later.
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struct pbuf *p = pbuf_alloc(PBUF_TRANSPORT, NTP_MSG_LEN, PBUF_RAM);
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uint8_t *req = (uint8_t *) p->payload;
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memset(req, 0, NTP_MSG_LEN);
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req[0] = 0x1b;
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udp_sendto(state->ntp_pcb, p, &state->ntp_server_address, NTP_PORT);
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pbuf_free(p);
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}
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/*static int64_t ntp_failed_handler(alarm_id_t id, void *user_data)
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{
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NTP_T* state = (NTP_T*)user_data;
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free(state);
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error("ntp request failed");
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return 0;
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}*/
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// Call back with a DNS result
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static void ntp_dns_found(const char *hostname, const ip_addr_t *ipaddr, void *arg) {
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NTP_T *state = (NTP_T*)arg;
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if (ipaddr) {
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state->ntp_server_address = *ipaddr;
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state->complete=1;
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} else {
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free(state);
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error("ntp dns request failed");
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}
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}
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// NTP data received
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static void ntp_recv(void *arg, struct udp_pcb *pcb, struct pbuf *p, const ip_addr_t *addr, u16_t port) {
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NTP_T *state = (NTP_T*)arg;
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uint8_t mode = pbuf_get_at(p, 0) & 0x7;
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uint8_t stratum = pbuf_get_at(p, 1);
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// Check the result
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if (ip_addr_cmp(addr, &state->ntp_server_address) && port == NTP_PORT && p->tot_len == NTP_MSG_LEN &&
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mode == 0x4 && stratum != 0) {
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pbuf_copy_partial(p, (void *)seconds_buf, sizeof(seconds_buf), 40);
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// uSec(200);
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state->complete=1;
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} else {
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pbuf_free(p);
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free(state);
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error("invalid ntp response");
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}
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pbuf_free(p);
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}
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// Perform initialisation
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static NTP_T* ntp_init(void) {
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NTPstate = (NTP_T *)calloc(1,sizeof(NTP_T));
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NTP_T *state=NTPstate;
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if (!state) {
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error("failed to allocate state\n");
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return NULL;
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}
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return state;
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}
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void cmd_ntp(unsigned char *tp){
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getargs(&tp,5,(unsigned char *)",");
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NTP_T *state = ntp_init();
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int timeout=5000;
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if (!state) error("Can't create NTP structure");
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ip4_addr_t remote_addr;
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char *IP=GetTempMemory(STRINGSIZE);
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if (argc >=1){
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MMFLOAT adjust = getnumber(argv[0]);
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if (adjust < -12.0 || adjust > 14.0) error("Invalid Time Offset");
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timeadjust=(time_t)(adjust*3600.0);
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} else timeadjust=0;
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if(argc>=3 && *argv[2])strcpy(IP,(char *)getCstring(argv[2]));
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else strcpy(IP,NTP_SERVER);
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if(argc==5)timeout=getint(argv[4],0,100000);
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if(!isalpha((uint8_t)*IP) && strchr(IP,'.') && strchr(IP,'.')<IP+4){
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if(!ip4addr_aton(IP, &remote_addr))error("Invalid address format");
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state->ntp_server_address=remote_addr;
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} else {
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int err = dns_gethostbyname(IP, &remote_addr, ntp_dns_found, state);
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if(err==ERR_OK)state->ntp_server_address=remote_addr;
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else if(err==ERR_INPROGRESS){
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Timer4=timeout;
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while(!state->complete && Timer4 && !(err==ERR_OK))if(startupcomplete)cyw43_arch_poll();
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if(!Timer4)error("Failed to convert web address");
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state->complete=0;
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} else error("Failed to find NTP address");
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}
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char buff[STRINGSIZE]={0};
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sprintf(buff,"ntp address %s\r\n", ip4addr_ntoa(&state->ntp_server_address));
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if(!optionsuppressstatus)MMPrintString(buff);
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memset((void *)seconds_buf, 0, sizeof(seconds_buf));
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state->ntp_pcb = udp_new_ip_type(IPADDR_TYPE_ANY);
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if (!state->ntp_pcb) {
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free((void *)state);
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error("failed to create pcb\n");
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} else udp_recv(state->ntp_pcb, ntp_recv, state);
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ntp_request(state);
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Timer4=timeout;
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while(!state->complete){
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if(startupcomplete)cyw43_arch_poll();
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if(!Timer4){
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udp_remove(NTPstate->ntp_pcb);
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// memset(NTPstate,0,sizeof(NTPstate));
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free(NTPstate);
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error("NTP timeout");
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}
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}
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uint32_t seconds_since_1900 = seconds_buf[0] << 24 | seconds_buf[1] << 16 | seconds_buf[2] << 8 | seconds_buf[3];
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if(seconds_since_1900){
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uint32_t seconds_since_1970 = seconds_since_1900 - NTP_DELTA;
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time_t epoch = seconds_since_1970;
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ntp_result(state, 0, &epoch);
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}
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udp_remove(NTPstate->ntp_pcb);
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// memset(NTPstate,0,sizeof(NTPstate));
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free(NTPstate);
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} |