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--- tools:wdt [2024/06/10 17:08] – [Using an Watchdog through the HAL] ursgraf
+++ tools:wdt [2024/06/10 17:24] (current) – [Using an Watchdog through the HAL] ursgraf
@@ Line 10: / Line 10: @@
 ===== Using an Watchdog through the HAL =====
-Some HAL libraries implement a watchdog device, e.g. [[getting_started:install_wrapper#flink|flink]]. When going through the HAL, you can use the [[eeros_architecture:control_system:available_blocks:watchdog|]] block.
+Some HAL libraries implement a watchdog device, e.g. [[getting_started:install_wrapper#flink|flink]]. When going through the HAL, you can use the [[eeros_architecture:control_system:available_blocks:watchdog|]] block. Such a block runs within the time domain of your control system and periodically resets the timer. The timer must be configured within the configuration file (see [[eeros_architecture:hal:configuration_file|]]. This could be done for example as follows
+<code>
+"subdevice5": {
+  "type": "Watchdog",
+  "channel0": {
+    "signalId": "Wdt",
+    "additionalArguments": "0.05"
+   }
+}
+</code>
+Here, the watchdog timeout is set to 50ms. You have to start the timer, which is called ''arming'' as soon as your time domain starts running.
+<code>
+wdt.arm();
+</code>
+The watchdog block in your control system defines a peripheral input. Check for the state of this input with a critical input in your safety system, see [[getting_started:tutorials:hal2|]].