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

   1 #include "pico/cyw43_arch.h"
   2 #include "pico/stdlib.h"
   3
   4 #include "blink.h"
   5 #include "button.h"
   6 #include "config.h"
   7 #include "net.h"
   8
   9 static u16_t seq = 0;
  10
  11 static void button_pressed() {
  12   /* TODO: This is interrupt context.  We need to get out of interrupt context
  13    * quickly; we should not be doing significant work here, & definitely
  14    * shouldn't be sleeping here.  We signal errors with blinking the LED, which
  15    * involves sleeping, so this all has to move. */
  16   send_report(seq++, 0);
  17   signal(4, 200);
  18 }
  19
  20 static void wait_forever() {
  21   /* pico-examples/gpio/hello_gpio_irq/hello_gpio_irq.c implements wait-forever
  22    * as "while (1);", but
  23    * https://www.raspberrypi.com/documentation/pico-sdk/high_level.html#gaf469c6d691230e9d1008
  24    * says sleeping uses less power, so we sleep.  */
  25   while (1) {
  26     /* https://www.raspberrypi.com/documentation/pico-sdk/hardware.html#rpip7ce2cdc1662dce59296b
  27      * says the maximum sleep is 2^32 - 1 microseconds (~71.58 minutes), so we
  28      * sleep in chunks. */
  29     sleep_ms(1 << 31); /* 35.79 minutes */
  30   }
  31 }
  32
  33 int main() {
  34   stdio_init_all();
  35   if (cyw43_arch_init_with_country(CYW43_COUNTRY_USA))
  36     signal_error_by_blinking();
  37   signal(1, 200);
  38   cyw43_arch_enable_sta_mode();
  39   signal(2, 200);
  40   if (cyw43_arch_wifi_connect_timeout_ms(wifi_ssid, wifi_pass,
  41                                          CYW43_AUTH_WPA2_AES_PSK, 10000))
  42     signal_error_by_blinking();
  43   signal(3, 200);
  44   begin_listening_for_button_press(button_pressed);
  45
  46   wait_forever();
  47 }