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/*
* morningtown.c
*
* Silent alarm clock
*
* Copyright © 2023 Thomas White <taw@physics.org>
*
* This file is part of MorningTown
*
* MorningTown is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* MorningTown is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with MorningTown. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include <pico/stdlib.h>
#include <hardware/rtc.h>
#include <hardware/watchdog.h>
#include <pico/cyw43_arch.h>
#include "ntp_client.h"
#define LED_GREEN 21
#define LED_RED 22
int ntp_sent = 0;
int ntp_ok = 0;
static void flash_red(int n)
{
int i;
gpio_put(LED_GREEN, 0);
for ( i=0; i<10; i++ ) {
gpio_put(LED_RED, 1);
sleep_ms(100);
gpio_put(LED_RED, 0);
sleep_ms(100);
}
}
static void celebrate()
{
int i;
for ( i=0; i<10; i++ ) {
gpio_put(LED_RED, 1);
gpio_put(LED_GREEN, 0);
sleep_ms(300);
gpio_put(LED_RED, 0);
gpio_put(LED_GREEN, 1);
sleep_ms(300);
}
gpio_put(LED_GREEN, 0);
gpio_put(LED_RED, 0);
}
static void check_clock()
{
datetime_t t = {0};
rtc_get_datetime(&t);
if ( (t.hour == 7) && (t.min >= 15) ) {
gpio_put(LED_RED, 0);
gpio_put(LED_GREEN, 1);
} else if ( (t.hour >= 8) && (t.hour < 12) ) {
gpio_put(LED_RED, 1);
gpio_put(LED_GREEN, 1);
} else {
gpio_put(LED_RED, 0);
gpio_put(LED_GREEN, 0);
}
}
static void ntp_callback(int status)
{
switch ( status ) {
case NTP_DNS_ERROR:
flash_red(5);
ntp_sent = 0;
break;
case NTP_DNS_NO_ADDR:
flash_red(10);
ntp_sent = 0;
break;
case NTP_BAD_REPLY:
flash_red(15);
ntp_sent = 0;
break;
case NTP_TIMEOUT:
flash_red(20);
ntp_sent = 0;
break;
case NTP_REQUEST_SENT:
break;
case NTP_REPLY_RECEIVED:
celebrate();
ntp_ok = 1;
break;
}
}
int main()
{
NTP_T *ntp_state;
int last_conn;
gpio_init(LED_GREEN);
gpio_init(LED_RED);
gpio_set_dir(LED_GREEN, GPIO_OUT);
gpio_set_dir(LED_RED, GPIO_OUT);
cyw43_arch_init();
cyw43_arch_enable_sta_mode();
stdio_init_all();
watchdog_enable(0x7fffff, 1);
cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN, 1);
gpio_put(LED_RED, 1);
gpio_put(LED_GREEN, 1);
sleep_ms(2000);
cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN, 0);
gpio_put(LED_RED, 0);
gpio_put(LED_GREEN, 0);
rtc_init();
ntp_state = ntp_init(ntp_callback);
last_conn = 10;
while (1) {
watchdog_update();
int st = cyw43_wifi_link_status(&cyw43_state, CYW43_ITF_STA);
cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN,
!ntp_ok && (st == CYW43_LINK_JOIN));
if ( (st != CYW43_LINK_JOIN) && (last_conn > 100) ) {
cyw43_arch_wifi_connect_async(WIFI_SSID,
WIFI_PASSWORD,
CYW43_AUTH_WPA2_AES_PSK);
debug_print("connecting to wifi...\n");
last_conn = 0;
}
if ( (st == CYW43_LINK_JOIN) && !ntp_sent ) {
ntp_send_request(ntp_state);
debug_print("sending NTP request\n");
ntp_sent = 1;
}
if ( ntp_ok ) {
debug_print("connected OK. Checking clock..\n");
check_clock();
}
ntp_poll(ntp_state);
debug_print("tick\n");
last_conn += 1;
sleep_ms(100);
}
}
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