server: Only write CSV headers when initially creating the log file

[tattlekey] / client / blink.c

/* tattlekey: A one-key UDP keyboard
 * Copyright (C) 2023  Scott Worley <scottworley@scottworley.com>
 *
 * This program 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.
 *
 * This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.
 */

#include "pico/cyw43_arch.h"
#include "pico/stdlib.h"

#include "blink.h"

void one_blink(int duration) {
  cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN, 1);
  sleep_ms(duration);
  cyw43_arch_gpio_put(CYW43_WL_GPIO_LED_PIN, 0);
  sleep_ms(duration);
}

void signal(int count, int duration) {
  for (int i = 0; i < count; i++)
    one_blink(duration);
  sleep_ms(1000);
}

void blink_forever(int duration) {
  while (true) {
    one_blink(duration);
  }
}

void signal_error_by_blinking() { blink_forever(100); }
void signal_success_by_blinking() { blink_forever(400); }