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client: Don't sleep in interrupt context
[tattlekey] / 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 static void button_pressed() {
13 /* This runs in interrupt context; don't linger. */
14 char zero = '\0';
15 /* We don't check for failure (full queue) here because there's not much to be
16 * done about it. */
17 queue_try_add(&queue, &zero);
18 }
19
20 int main() {
21 stdio_init_all();
22 if (cyw43_arch_init_with_country(CYW43_COUNTRY_USA))
23 signal_error_by_blinking();
24 signal(1, 200);
25 cyw43_arch_enable_sta_mode();
26 signal(2, 200);
27 if (cyw43_arch_wifi_connect_timeout_ms(wifi_ssid, wifi_pass,
28 CYW43_AUTH_WPA2_AES_PSK, 10000))
29 signal_error_by_blinking();
30 signal(3, 200);
31
32 queue_init(&queue, 1, 99);
33
34 begin_listening_for_button_press(button_pressed);
35
36 u16_t seq = 0;
37 while (1) {
38 char _;
39 queue_remove_blocking(&queue, &_);
40 send_report(seq++, 0);
41 signal(4, 200);
42 }
43 }