Gabe/pico-temp-controller
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added temp reading.

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This commit is contained in:
Gabe Venberg 2023-12-02 21:50:12 -06:00
parent 188fb05b25
commit c1e16006f3
1 changed files with 29 additions and 14 deletions
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43
src/main.rs
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@ -7,7 +7,10 @@
)] )]
mod app { mod app {
extern crate alloc; extern crate alloc;
use alloc::{format, string::{self, String, ToString}}; use alloc::{
format,
string::{self, String, ToString},
};
use core::fmt::Write; use core::fmt::Write;
use cortex_m::delay::Delay; use cortex_m::delay::Delay;
use defmt_rtt as _; use defmt_rtt as _;
@ -89,7 +92,7 @@ mod app {
#[monotonic(binds = TIMER_IRQ_0, default = true)] #[monotonic(binds = TIMER_IRQ_0, default = true)]
type Rp2040Mono = Rp2040Monotonic; type Rp2040Mono = Rp2040Monotonic;
struct Thermocouple { pub struct Thermocouple {
cs: Pin<Gpio5, FunctionSio<SioOutput>, PullDown>, cs: Pin<Gpio5, FunctionSio<SioOutput>, PullDown>,
spi: ThermocoupleSpi, spi: ThermocoupleSpi,
} }
@ -107,6 +110,7 @@ mod app {
struct Shared { struct Shared {
delay: Delay, delay: Delay,
recent_temp: f32, recent_temp: f32,
uart: Uart,
} }
#[local] #[local]
@ -215,14 +219,16 @@ mod app {
let mono = Rp2040Mono::new(ctx.device.TIMER); let mono = Rp2040Mono::new(ctx.device.TIMER);
// write_lcd(&mut lcd, &mut delay, "Starting");
display::spawn(ToString::to_string(&"Starting")).unwrap(); display::spawn(ToString::to_string(&"Starting")).unwrap();
heartbeat::spawn().unwrap(); heartbeat::spawn().unwrap();
second_heartbeat::spawn().unwrap(); second_heartbeat::spawn().unwrap();
( (
Shared { delay, recent_temp: 0.0 }, Shared {
delay,
recent_temp: 0.0,
uart,
},
Local { Local {
led: led_pin, led: led_pin,
thermocouple, thermocouple,
@ -249,15 +255,26 @@ mod app {
// } // }
} }
fn write_lcd(lcd: &mut Lcd, delay: &mut Delay, string: &str) { #[task(local = [thermocouple], shared = [recent_temp, uart])]
lcd.reset(delay).unwrap(); fn read_temp(mut ctx: read_temp::Context) {
lcd.clear(delay).unwrap(); match ctx.local.thermocouple.read_temp() {
lcd.write_str(string, delay).unwrap(); Ok(v) => {
ctx.shared.recent_temp.lock(|t| *t = v);
ctx.shared
.uart
.lock(|u| writeln!(u, "{:02.2} C", v).unwrap());
let str = format!("{:02.2} C", v);
display::spawn(str).unwrap();
}
Err(e) => defmt::error!("error reading temp {}", defmt::Debug2Format(&e)),
}
let one_second = Duration::<u64, MONO_NUM, MONO_DENOM>::from_ticks(ONE_SEC_TICKS);
read_temp::spawn_after(one_second).unwrap();
} }
#[task(local = [lcd], shared = [delay], capacity = 5)] #[task(local = [lcd], shared = [delay], capacity = 5)]
fn display(mut ctx: display::Context, str: String){ fn display(mut ctx: display::Context, str: String) {
ctx.shared.delay.lock(|d|{ ctx.shared.delay.lock(|d| {
ctx.local.lcd.reset(d).unwrap(); ctx.local.lcd.reset(d).unwrap();
ctx.local.lcd.clear(d).unwrap(); ctx.local.lcd.clear(d).unwrap();
ctx.local.lcd.write_str(&str, d).unwrap(); ctx.local.lcd.write_str(&str, d).unwrap();
@ -272,7 +289,6 @@ mod app {
// Re-spawn this task after 1 second // Re-spawn this task after 1 second
let one_second = Duration::<u64, MONO_NUM, MONO_DENOM>::from_ticks(ONE_SEC_TICKS); let one_second = Duration::<u64, MONO_NUM, MONO_DENOM>::from_ticks(ONE_SEC_TICKS);
heartbeat::spawn_after(one_second).unwrap(); heartbeat::spawn_after(one_second).unwrap();
display::spawn(ToString::to_string(&"tick")).unwrap();
} }
#[task(local = [external_led])] #[task(local = [external_led])]
@ -282,8 +298,7 @@ mod app {
// Re-spawn this task after 1 second // Re-spawn this task after 1 second
let one_and_one_half_second = let one_and_one_half_second =
Duration::<u64, MONO_NUM, MONO_DENOM>::from_ticks((ONE_SEC_TICKS as f64*1.14)as u64); Duration::<u64, MONO_NUM, MONO_DENOM>::from_ticks((ONE_SEC_TICKS as f64 * 1.14) as u64);
second_heartbeat::spawn_after(one_and_one_half_second).unwrap(); second_heartbeat::spawn_after(one_and_one_half_second).unwrap();
display::spawn(ToString::to_string(&"tock")).unwrap();
} }
} }