scuffed uart print

semestralka_2_uart/src/bin/main.rs

@@ -60,8 +60,10 @@ async fn main(spawner: Spawner) {
     Timer::after(Duration::from_millis(10)).await;
 
     info!("ready for uart");
+    let mut iwdg = Some(p.IWDG);
+    
     loop {
         let cmd = CMD_CH.receive().await;
-        execute_low_power(cmd);
+        execute_low_power(cmd, &mut iwdg).await;
     }
 }

semestralka_2_uart/src/hw_uart_pc/init.rs

@@ -49,6 +49,11 @@ pub static CMD_CH: Channel<CriticalSectionRawMutex, LowPowerCmd, 1> = Channel::n
 
 #[embassy_executor::task]
 pub async fn uart_cmd_task() {
+    async fn print_menu() {
+        while PIPE_HW_TX.len() > 0 {
+            embassy_time::Timer::after(embassy_time::Duration::from_millis(2)).await;
+        }
+        let _ = PIPE_HW_TX.write(b"\x1B[2J\x1B[H").await;
         let _ = PIPE_HW_TX.write(
             b"\r\n\
             Modes:\r\n\
@@ -59,9 +64,13 @@ pub async fn uart_cmd_task() {
             [5] Stop mode (0-3)\r\n\
             "
         ).await;
+    }
+
+    print_menu().await;
 
     let mut b = [0u8; 2];
     loop {
+        b.fill(0);
         let n = PIPE_HW_RX.read(&mut b).await;
         if n == 0 { continue; }
 
@@ -71,29 +80,30 @@ pub async fn uart_cmd_task() {
             b'3' => CMD_CH.send(LowPowerCmd::Standby).await,
             b'4' => CMD_CH.send(LowPowerCmd::Shutdown).await,
             b'5' => {
-                // Expect 2 digits: e.g. b'5' + '13' = Stop1 WfeNoEventClear
+                let _ = PIPE_HW_TX.write(b"Enter Stop mode number (1-3): ").await;
-                let _ = PIPE_HW_TX.write(b"Enter Stop mode number (0-3): ").await;
+                b.fill(0);
-                let _ = PIPE_HW_RX.read(&mut b[1..2]).await;
+                let n = PIPE_HW_RX.read(&mut b).await;
-                let stop_mode = match b[1] {
+                if n == 0 { print_menu().await; continue; }
+                let stop_mode = match b[0] {
                     b'1' => StopMode::Stop1,
                     b'2' => StopMode::Stop2,
-                    _ => StopMode::Stop3,
+                    b'3' => StopMode::Stop3,
+                    _ => { print_menu().await; continue; }
                 };
 
                 let _ = PIPE_HW_TX.write(b"Enter entry method (1=WFI,2=WFE,3=WFE no clear): ").await;
-                let n = PIPE_HW_RX.read(&mut b[1..2]).await;
+                b.fill(0);
-                if n > 0 {
+                let n = PIPE_HW_RX.read(&mut b).await;
-                    let entry = match b[1] {
+                if n == 0 { print_menu().await; continue; }
+                let entry = match b[0] {
                     b'1' => StopEntry::Wfi,
                     b'2' => StopEntry::Wfe,
-                        _ => StopEntry::WfeNoEventClear,
+                    b'3' => StopEntry::WfeNoEventClear,
+                    _ => { print_menu().await; continue; }
                 };
                 CMD_CH.send(LowPowerCmd::StopMode(StopModeConfig { mode: stop_mode, entry })).await;
             }
-            }
+            _ => { print_menu().await; continue; }
-            _ => {
-                let _ = PIPE_HW_TX.write(b"Unknown command\r\n").await;
-            }
         }
     }
 }

semestralka_2_uart/src/sleep/handler.rs

@@ -1,22 +1,42 @@
+// src/sleep/handler.rs
+
+use embassy_time::{Duration, Timer};
+use embassy_stm32::peripherals;
+use embassy_stm32::Peri;
+
 use crate::sleep::stop::StopEntry;
 use crate::sleep::stop::*;
+use crate::wakeup::iwdg::init_watchdog_reset;
 use crate::hw_uart_pc::init::{LowPowerCmd, StopMode, StopModeConfig};
 
 use defmt::info;
 
-pub fn execute_low_power(cmd: LowPowerCmd) -> ! {
+pub async fn execute_low_power(
+    cmd: LowPowerCmd, 
+    iwdg: &mut Option<Peri<'static, peripherals::IWDG>>
+) -> ! {
+    Timer::after(Duration::from_millis(10)).await;
+
     match cmd {
         LowPowerCmd::Standby8k => {
             info!("Entering Standby with 8KB SRAM2 retention");
-            // call your existing standby function here
+            if let Some(wdg) = iwdg.take() {
+                init_watchdog_reset(wdg).await;
+            }
             super::standby::enter_standby_with_sram2_8kb();
         }
         LowPowerCmd::StandbyFull => {
             info!("Entering Standby with full SRAM2 retention");
+            if let Some(wdg) = iwdg.take() {
+                init_watchdog_reset(wdg).await;
+            }
             super::standby::enter_standby_with_sram2_full();
         }
         LowPowerCmd::Standby => {
             info!("Entering minimal Standby");
+            if let Some(wdg) = iwdg.take() {
+                init_watchdog_reset(wdg).await;
+            }
             super::standby::enter_standby();
         }
         LowPowerCmd::Shutdown => {
@@ -25,6 +45,9 @@ pub fn execute_low_power(cmd: LowPowerCmd) -> ! {
         }
         LowPowerCmd::StopMode(StopModeConfig { mode, entry }) => {
             info!("Entering {:?} with {:?}", mode, entry);
+            if let Some(wdg) = iwdg.take() {
+                init_watchdog_reset(wdg).await;
+            }
             match mode {
                 StopMode::Stop1 => enter_stop1(entry),
                 StopMode::Stop2 => enter_stop2(entry),

semestralka_2_uart/src/wakeup/iwdg.rs

@@ -42,7 +42,7 @@ pub fn clear_wakeup_flags() {
 ///
 /// # Timing
 /// - Timeout value is configured in `WATCHDOG_TIMEOUT_US` from config.rs
-pub async fn init_watchdog_reset(iwdg: Peri<'_, peripherals::IWDG>) {
+pub async fn init_watchdog_reset(iwdg: Peri<'static, peripherals::IWDG>) {
     info!("Initializing watchdog after watchdog wake...");
     let mut watchdog = IndependentWatchdog::new(iwdg, WATCHDOG_TIMEOUT_US);
     watchdog.unleash();