1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
|
#![no_std]
#![no_main]
#[cfg(feature = "rp2040")]
teleprobe_meta::target!(b"rpi-pico");
use defmt::{assert, *};
use embassy_executor::Spawner;
use embassy_futures::select::{Either, select};
use embassy_rp::bind_interrupts;
use embassy_rp::rtc::{DateTime, DateTimeFilter, DayOfWeek, Rtc};
use embassy_time::{Duration, Instant, Timer};
use {defmt_rtt as _, panic_probe as _};
// Bind the RTC interrupt to the handler
bind_interrupts!(struct Irqs {
RTC_IRQ => embassy_rp::rtc::InterruptHandler;
});
#[embassy_executor::main]
async fn main(_spawner: Spawner) {
let p = embassy_rp::init(Default::default());
let mut rtc = Rtc::new(p.RTC, Irqs);
info!("RTC test started");
// Initialize RTC if not running
if !rtc.is_running() {
info!("Starting RTC");
let now = DateTime {
year: 2000,
month: 1,
day: 1,
day_of_week: DayOfWeek::Saturday,
hour: 0,
minute: 0,
second: 0,
};
rtc.set_datetime(now).unwrap();
Timer::after_millis(100).await;
}
// Test 1: Basic RTC functionality - read current time
let initial_time = rtc.now().unwrap();
info!(
"Initial time: {}-{:02}-{:02} {}:{:02}:{:02}",
initial_time.year,
initial_time.month,
initial_time.day,
initial_time.hour,
initial_time.minute,
initial_time.second
);
// Test 2: Schedule and wait for alarm
info!("Testing alarm scheduling");
// Wait until we're at a predictable second, then schedule for a future second
loop {
let current = rtc.now().unwrap();
if current.second <= 55 {
break;
}
Timer::after_millis(100).await;
}
// Now schedule alarm for 3 seconds from current time
let current_time = rtc.now().unwrap();
let alarm_second = (current_time.second + 3) % 60;
let alarm_filter = DateTimeFilter::default().second(alarm_second);
info!("Scheduling alarm for second: {}", alarm_second);
rtc.schedule_alarm(alarm_filter);
// Verify alarm is scheduled
let scheduled = rtc.alarm_scheduled();
assert!(scheduled.is_some(), "Alarm should be scheduled");
info!("Alarm scheduled successfully: {}", scheduled.unwrap());
// Wait for alarm with timeout
let alarm_start = Instant::now();
match select(Timer::after_secs(5), rtc.wait_for_alarm()).await {
Either::First(_) => {
core::panic!("Alarm timeout - alarm should have triggered by now");
}
Either::Second(_) => {
let alarm_duration = Instant::now() - alarm_start;
info!("ALARM TRIGGERED after {:?}", alarm_duration);
// Verify timing is reasonable (should be around 3 seconds)
assert!(
alarm_duration >= Duration::from_secs(2) && alarm_duration <= Duration::from_secs(4),
"Alarm timing incorrect: {:?}",
alarm_duration
);
}
}
// Test 3: Verify RTC is still running and time has advanced
let final_time = rtc.now().unwrap();
info!(
"Final time: {}-{:02}-{:02} {}:{:02}:{:02}",
final_time.year, final_time.month, final_time.day, final_time.hour, final_time.minute, final_time.second
);
// Verify time has advanced (allowing for minute/hour rollover)
let time_diff = if final_time.second >= initial_time.second {
final_time.second - initial_time.second
} else {
60 - initial_time.second + final_time.second
};
assert!(time_diff >= 3, "RTC should have advanced by at least 3 seconds");
info!("Time advanced by {} seconds", time_diff);
// Test 4: Verify alarm is no longer scheduled after triggering
let post_alarm_scheduled = rtc.alarm_scheduled();
assert!(
post_alarm_scheduled.is_none(),
"Alarm should not be scheduled after triggering"
);
info!("Alarm correctly cleared after triggering");
info!("Test OK");
cortex_m::asm::bkpt();
}
|
