git.scottworley.com Git - tattlekey/blob - client/tattlekey.c

   1 #include "pico/cyw43_arch.h"
   2 #include "pico/stdlib.h"
   3 #include "pico/util/queue.h"
   4
   5 #include "blink.h"
   6 #include "button.h"
   7 #include "config.h"
   8 #include "net.h"
   9
  10 queue_t queue;
  11
  12 uint32_t time_s() { return time_us_64() / 1000000ul; }
  13
  14 static void button_pressed() {
  15   /* This runs in interrupt context; don't linger.  */
  16   static uint64_t last_button_press_time = 0;
  17   uint32_t now = time_s();
  18   uint32_t time_since_last_press = now - last_button_press_time;
  19   if (time_since_last_press >= minimum_seconds_between_button_presses) {
  20     last_button_press_time = now;
  21     /* We don't check for failure (full queue) here because there's not much to
  22      * be done about it. */
  23     queue_try_add(&queue, &now);
  24   }
  25 }
  26
  27 int main() {
  28   stdio_init_all();
  29   if (cyw43_arch_init_with_country(CYW43_COUNTRY_USA))
  30     signal_error_by_blinking();
  31   cyw43_arch_enable_sta_mode();
  32   signal(3, 100);
  33   if (cyw43_arch_wifi_connect_timeout_ms(wifi_ssid, wifi_pass,
  34                                          CYW43_AUTH_WPA2_AES_PSK, 90000))
  35     signal_error_by_blinking();
  36   signal(2, 300);
  37
  38   queue_init(&queue, sizeof(uint32_t), 99);
  39
  40   begin_listening_for_button_press(button_pressed);
  41
  42   u16_t seq = 0;
  43   while (1) {
  44     uint32_t t;
  45     queue_remove_blocking(&queue, &t);
  46     seq++;
  47     for (int i = 0; i < resend_count; i++) {
  48       uint32_t now = time_s();
  49       uint32_t ago = now - t;
  50       send_report(seq, ago);
  51       signal(i == 0 ? 2 : 1, 100);
  52       sleep_ms(resend_interval_ms);
  53     }
  54   }
  55 }