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 enum event_type { BUTTONPRESS };
  11 typedef struct {
  12   enum event_type type;
  13   union {
  14     struct {
  15       uint32_t timestamp;
  16     } buttonpress;
  17   };
  18 } event_t;
  19
  20 queue_t queue;
  21
  22 uint32_t time_s() { return time_us_64() / 1000000ul; }
  23
  24 static void button_pressed() {
  25   /* This runs in interrupt context; don't linger.  */
  26   static uint64_t last_button_press_time = 0;
  27   uint32_t now = time_s();
  28   uint32_t time_since_last_press = now - last_button_press_time;
  29   if (time_since_last_press >= config_minimum_seconds_between_button_presses) {
  30     last_button_press_time = now;
  31     event_t e;
  32     e.type = BUTTONPRESS;
  33     e.buttonpress.timestamp = now;
  34     /* We don't check for failure (full queue) here because there's not much to
  35      * be done about it. */
  36     queue_try_add(&queue, &e);
  37   }
  38 }
  39
  40 int main() {
  41   stdio_init_all();
  42   if (cyw43_arch_init_with_country(CYW43_COUNTRY_USA))
  43     signal_error_by_blinking();
  44   cyw43_arch_enable_sta_mode();
  45   signal(3, 100);
  46   if (cyw43_arch_wifi_connect_timeout_ms(config_wifi_ssid, config_wifi_pass,
  47                                          CYW43_AUTH_WPA2_AES_PSK, 90000))
  48     signal_error_by_blinking();
  49   signal(2, 300);
  50
  51   queue_init(&queue, sizeof(event_t), 99);
  52
  53   begin_listening_for_button_press(button_pressed);
  54
  55   u16_t seq = 0;
  56   while (1) {
  57     event_t e;
  58     queue_remove_blocking(&queue, &e);
  59     switch (e.type) {
  60     case BUTTONPRESS:
  61       seq++;
  62       for (int i = 0; i < config_resend_count; i++) {
  63         uint32_t now = time_s();
  64         uint32_t ago = now - e.buttonpress.timestamp;
  65         send_report(seq, ago);
  66         signal(i == 0 ? 2 : 1, 100);
  67         sleep_ms(config_resend_interval_ms);
  68       }
  69       break;
  70     default:
  71       signal_error_by_blinking();
  72     }
  73   }
  74 }