124 lines
3.2 KiB
C
124 lines
3.2 KiB
C
/*
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* ESPNTPServer.h
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*
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* Copyright 2017 Christopher B. Liebman
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*
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* Created on: Oct 29, 2017
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* Author: liebman
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*/
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#define USE_ASYNC_UDP
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//#define USE_NO_WIFI
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#ifndef _ESPNTPServer_H_
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#define _ESPNTPServer_H_
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#include "Arduino.h"
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#include "Ticker.h"
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#if !defined(USE_NO_WIFI)
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#include "WiFiManager.h"
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#endif
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#include "SoftwareSerial.h"
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#include "MicroNMEA.h"
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#include <time.h>
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#include "SSD1306Wire.h"
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#if defined(USE_ASYNC_UDP)
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#include "ESPAsyncUDP.h"
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#else
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#include <WiFiUdp.h>
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#endif
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// pin definitions
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#define LED_PIN BUILTIN_LED // LED on pin, active low
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#define SYNC_PIN D5 // (GPIO14) pin tied to 1hz square wave from GPS
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#define GPS_RX_PIN D6 // (GPIO12)
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#define GPS_TX_PIN D7 // (GPIO13)
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#define GPS_EN_PIN D4 // (GPIO2)
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#define NTP_PORT 123
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#define SYNC_EDGE_RISING 1
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#define SYNC_EDGE_FALLING 0
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#define WARMUP_SECONDS 2
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#define PRECISION_COUNT 10000
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#define MICROS_PER_SEC 1000000
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#define SERIAL_BUFFER_SIZE 128
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#define NMEA_BUFFER_SIZE 128
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#define VALIDITY_CHECK_MS 1100
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#define PPS_VALID_COUNT 60 // must have at least this many "good" PPS interrupts to be valid
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//#define MICROS_HISTORY_SIZE 1000
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#define us2s(x) (((double)x)/(double)MICROS_PER_SEC) // microseconds to seconds
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typedef struct ntp_time
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{
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uint32_t seconds;
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uint32_t fraction;
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} NTPTime;
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typedef struct ntp_packet
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{
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uint8_t flags;
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uint8_t stratum;
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uint8_t poll;
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int8_t precision;
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uint32_t delay;
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uint32_t dispersion;
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uint8_t ref_id[4];
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NTPTime ref_time;
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NTPTime orig_time;
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NTPTime recv_time;
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NTPTime xmit_time;
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} NTPPacket;
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#define LI_NONE 0
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#define LI_SIXTY_ONE 1
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#define LI_FIFTY_NINE 2
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#define LI_NOSYNC 3
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#define MODE_RESERVED 0
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#define MODE_ACTIVE 1
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#define MODE_PASSIVE 2
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#define MODE_CLIENT 3
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#define MODE_SERVER 4
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#define MODE_BROADCAST 5
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#define MODE_CONTROL 6
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#define MODE_PRIVATE 7
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#define NTP_VERSION 4
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#define REF_ID "PPS " // "GPS " when we have one!
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#define setLI(value) ((value&0x03)<<6)
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#define setVERS(value) ((value&0x07)<<3)
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#define setMODE(value) ((value&0x07))
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#define getLI(value) ((value>>6)&0x03)
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#define getVERS(value) ((value>>3)&0x07)
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#define getMODE(value) (value&0x07)
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#define SEVENTY_YEARS 2208988800L
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#define toEPOCH(t) ((uint32_t)t-SEVENTY_YEARS)
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#define toNTP(t) ((uint32_t)t+SEVENTY_YEARS)
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// simple versions - we don't worry about side effects
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#define MAX(a, b) ((a) < (b) ? (b) : (a))
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#define MIN(a, b) ((a) < (b) ? (a) : (b))
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#endif /* _ESPNTPServer_H_ */
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