https://github.com/trylaarsdam/stm32l4xx-watchdog

Simple hardware watchdog library for the STM32L4xx series and PlatformIO.
https://github.com/trylaarsdam/stm32l4xx-watchdog

iwdg platformio stm32 stm32l4 watchdog

Last synced: about 1 month ago
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Simple hardware watchdog library for the STM32L4xx series and PlatformIO.

• Host: GitHub
• URL: https://github.com/trylaarsdam/stm32l4xx-watchdog
• Owner: trylaarsdam
• Created: 2021-12-02T14:40:08.000Z (about 3 years ago)
• Default Branch: main
• Last Pushed: 2023-06-07T19:51:14.000Z (over 1 year ago)
• Last Synced: 2024-11-14T19:43:29.083Z (3 months ago)
• Topics: iwdg, platformio, stm32, stm32l4, watchdog
• Language: C++
• Homepage: https://registry.platformio.org/libraries/trylaarsdam/STM32L4xx%20Watchdog
• Size: 11.7 KB
• Stars: 1
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# STM32L4xx Watchdog Library

## Usage

### Creating Watchdog Object

```cpp

#include "WatchDog.hpp"

WatchDog watchdog;

```

### Initializing the Watchdog

```cpp

watchdog.init([seconds]);

```

[seconds] specifies the timeout period for the watchdog. If the watchdog is not "pet" within this amount of time (excluding when sleeping in `Shutdown` mode), the device will be reset and the IWDGRST RCC flag will be set.

### Petting/Refreshing the Watchdog Countdown

```cpp

watchdog.pet();

```

### Checking if the Watchdog is Currently Enabled

```cpp

watchdog.isEnabled();

```

This function returns a `bool`, where `true` means the watchdog is enabled and `false` designates the watchdog is not running. Note: this function only returns `true` when that watchdog instance has started the watchdog, and will not return `true` when another object has started the watchdog or the watchdog has been started manually.

### Checking if the Watchdog caused a system reset

```cpp

if(__HAL_RCC_GET_FLAG(RCC_FLAG_IWDGRST)) {

  //watchdog caused reset

}

else {

  //watchdog did not cause reset

}

__HAL_RCC_CLEAR_RESET_FLAGS(); // clears reset flags, otherwise on the next reset even though the watchdog may not have caused the reset `RCC_FLAG_IWDGRST` will still be set.

```