137 lines
4.3 KiB
C
137 lines
4.3 KiB
C
|
/*
|
||
|
|
* Simple test using LWIP SNTP
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*-
|
||
|
|
* Copyright (c) 2018, Jeff Kletsky
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms, with or without
|
||
|
|
* modification, are permitted provided that the following conditions are met:
|
||
|
|
*
|
||
|
|
* * Redistributions of source code must retain the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer.
|
||
|
|
*
|
||
|
|
* * Redistributions in binary form must reproduce the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer in the
|
||
|
|
* documentation and/or other materials provided with the distribution.
|
||
|
|
*
|
||
|
|
* * 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 without specific prior written permission.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||
|
|
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 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.
|
||
|
|
*/
|
||
|
|
|
||
|
|
|
||
|
|
#include <esp8266.h>
|
||
|
|
#include <esp/uart.h>
|
||
|
|
|
||
|
|
#include <FreeRTOS.h>
|
||
|
|
#include <task.h>
|
||
|
|
|
||
|
|
/* espressif/esp_system.h uses "bool" but fails to #include */
|
||
|
|
#include <stdbool.h>
|
||
|
|
#include <espressif/esp_common.h>
|
||
|
|
#include <espressif/esp_wifi.h>
|
||
|
|
|
||
|
|
/* For sdk_system_restart_in_nmi() */
|
||
|
|
#include <esplibs/libmain.h>
|
||
|
|
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
|
||
|
|
#include <lwip/apps/sntp.h>
|
||
|
|
|
||
|
|
|
||
|
|
#define BLUE_LED 2
|
||
|
|
#define LED_ON 0
|
||
|
|
#define LED_OFF 1
|
||
|
|
|
||
|
|
#define WAIT_FOR_UART_SECS 5 /* 2 might be OK */
|
||
|
|
|
||
|
|
#define TV2LD(TV) ((long double)TV.tv_sec + (long double)TV.tv_usec * 1.e-6)
|
||
|
|
|
||
|
|
void
|
||
|
|
sntp_task(void *pvParameters) {
|
||
|
|
|
||
|
|
while (sdk_wifi_station_get_connect_status() != STATION_GOT_IP) {
|
||
|
|
vTaskDelay(10);
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Set one of SNTP_OPMODE_LISTENONLY or SNTP_OPMODE_POLL
|
||
|
|
*/
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* SNTP_OPMODE_LISTENONLY
|
||
|
|
* just needs the mode set, no server names required
|
||
|
|
* (requires broadcast NTP on your network)
|
||
|
|
*/
|
||
|
|
|
||
|
|
sntp_setoperatingmode(SNTP_OPMODE_LISTENONLY);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* SNTP_OPMODE_POLL
|
||
|
|
* Needs one or more server names set
|
||
|
|
* additional servers are "fail over"
|
||
|
|
* Can use a DNS name or an address literal
|
||
|
|
* LWIP can also be configured with SNTP_GET_SERVERS_FROM_DHCP
|
||
|
|
* (DHCP-specified SNTP servers untested at this time)
|
||
|
|
*
|
||
|
|
* NOTE: Early testing with polling shows higher deviations
|
||
|
|
* than seen with broadcast, even with RTT compensation
|
||
|
|
* Cause unknown at this time, but believed to be within SNTP
|
||
|
|
* amd not part of timekeeping itself.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
sntp_setoperatingmode(SNTP_OPMODE_POLL);
|
||
|
|
sntp_setservername(0, "ntp_a.example.com");
|
||
|
|
sntp_setservername(1, "ntp_b.example.com");
|
||
|
|
sntp_setservername(2, "ntp_c.example.com");
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* Once set up, this is all it takes */
|
||
|
|
sntp_init();
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Have high-priority thread "parked", might as well use it
|
||
|
|
* Show calling gettimeofday() once an hour to check for timer wrap
|
||
|
|
* (the SNTP process itself, if connected, should be sufficient)
|
||
|
|
*/
|
||
|
|
while (1) {
|
||
|
|
vTaskDelay(60 * 60 * (1000 / portTICK_PERIOD_MS));
|
||
|
|
printf("gettimeofday(NULL, NULL)\n");
|
||
|
|
gettimeofday(NULL, NULL);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
void
|
||
|
|
user_init(void)
|
||
|
|
{
|
||
|
|
uart_set_baud(0, 115200);
|
||
|
|
sdk_wifi_set_opmode(STATION_MODE);
|
||
|
|
/*
|
||
|
|
* Run at a high enough priority so that the initial time-set doesn't get interrupted
|
||
|
|
* Later calls and listen-only mode calls run in the high-priority "tcpip_thread" (LWIP)
|
||
|
|
*
|
||
|
|
* While 196 heap seemed sufficient for many tests, use of an NTP pool
|
||
|
|
* with DNS caused heap errors/warnings on starting NTP at 256 heap
|
||
|
|
*/
|
||
|
|
xTaskCreate(sntp_task, "SNTP task", 288, NULL, 6, NULL);
|
||
|
|
}
|