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
|
#![no_std]
#![no_main]
use defmt::*;
use embassy_executor::Spawner;
use embassy_stm32::dts::{Dts, InterruptHandler, SampleTime};
use embassy_stm32::peripherals::DTS;
use embassy_stm32::rcc::frequency;
use embassy_stm32::{bind_interrupts, dts, Config};
use embassy_time::Timer;
use {defmt_rtt as _, panic_probe as _};
bind_interrupts!(struct Irqs {
DTS => InterruptHandler;
});
#[embassy_executor::main]
async fn main(_spawner: Spawner) {
let mut config = Config::default();
{
use embassy_stm32::rcc::*;
config.rcc.hsi = Some(HSIPrescaler::DIV1);
config.rcc.csi = true;
config.rcc.pll1 = Some(Pll {
source: PllSource::HSI,
prediv: PllPreDiv::DIV4,
mul: PllMul::MUL25,
divp: Some(PllDiv::DIV2),
divq: Some(PllDiv::DIV4), // SPI1 cksel defaults to pll1_q
divr: None,
});
config.rcc.pll2 = Some(Pll {
source: PllSource::HSI,
prediv: PllPreDiv::DIV4,
mul: PllMul::MUL25,
divp: None,
divq: None,
divr: Some(PllDiv::DIV4), // 100mhz
});
config.rcc.sys = Sysclk::PLL1_P; // 200 Mhz
config.rcc.ahb_pre = AHBPrescaler::DIV1; // 200 Mhz
config.rcc.apb1_pre = APBPrescaler::DIV2; // 100 Mhz
config.rcc.apb2_pre = APBPrescaler::DIV2; // 100 Mhz
config.rcc.apb3_pre = APBPrescaler::DIV2; // 100 Mhz
config.rcc.voltage_scale = VoltageScale::Scale1;
config.rcc.mux.adcdacsel = mux::Adcdacsel::PLL2_R;
}
let p = embassy_stm32::init(config);
info!("Hello World!");
let mut config = dts::Config::default();
config.sample_time = SampleTime::ClockCycles15;
let mut dts = Dts::new(p.DTS, Irqs, config);
let cal = Dts::factory_calibration();
let convert_to_celsius = |raw_temp: u16| {
let raw_temp = raw_temp as f32;
let sample_time = (config.sample_time as u8) as f32;
let f = frequency::<DTS>().0 as f32;
let t0 = cal.t0 as f32;
let fmt0 = cal.fmt0.0 as f32;
let ramp_coeff = cal.ramp_coeff as f32;
((f * sample_time / raw_temp) - fmt0) / ramp_coeff + t0
};
loop {
let temp = dts.read().await;
info!("Temp: {} degrees", convert_to_celsius(temp));
Timer::after_millis(500).await;
}
}
|
