samples: zbus: Adjust runtime observers sample

Reverse the changes the affected API and add adjust the sample to the new
dynamic and static variations.

Signed-off-by: Rodrigo Peixoto <[email protected]>

Author: rodrigopex

samples/subsys/zbus/runtime_obs_registration/sample.yaml

@@ -11,7 +11,7 @@ tests:
       type: multi_line
       ordered: false
       regex:
-        - "I: System started"
+        - "I: System started. Runtime observers statically allocated"
         - "I: Activating filter"
         - "I: Deactivating filter"
         - "I: Bypass filter"
@@ -27,3 +27,31 @@ tests:
         - "I:  --> Consuming data: Acc x=9, y=9, z=9"
         - "I:  --> Consuming data: Acc x=10, y=10, z=10"
     tags: zbus
+  sample.zbus.runtime_os_registration_dynamic_alloc:
+    min_ram: 16
+    integration_platforms:
+      - qemu_x86
+    arch_exclude: nios2
+    harness: console
+    harness_config:
+      type: multi_line
+      ordered: false
+      regex:
+        - "I: System started. Runtime observers dynamically allocated"
+        - "I: Activating filter"
+        - "I: Deactivating filter"
+        - "I: Bypass filter"
+        - "I: Disable bypass filter"
+        - "I:  >-- Raw data fetched"
+        - "I:  -|- Filtering data"
+        - "I:  --> Consuming data: Acc x=0, y=0, z=0"
+        - "I:  --> Consuming data: Acc x=2, y=2, z=2"
+        - "I:  --> Consuming data: Acc x=4, y=4, z=4"
+        - "I:  --> Consuming data: Acc x=6, y=6, z=6"
+        - "I:  --> Consuming data: Acc x=7, y=7, z=7"
+        - "I:  --> Consuming data: Acc x=8, y=8, z=8"
+        - "I:  --> Consuming data: Acc x=9, y=9, z=9"
+        - "I:  --> Consuming data: Acc x=10, y=10, z=10"
+    tags: zbus
+    extra_configs:
+      - CONFIG_HEAP_MEM_POOL_SIZE=1024

samples/subsys/zbus/runtime_obs_registration/src/main.c

@@ -41,22 +41,23 @@ ZBUS_SUBSCRIBER_DEFINE(state_change_sub, 5);
 
 int main(void)
 {
-	LOG_INF("System started");
+	LOG_INF("System started. Runtime observers %s allocated",
+		IS_ENABLED(CONFIG_ZBUS_RUNTIME_OBSERVERS_NODE_ALLOC_DYNAMIC) ? "dynamically"
+									     : "statically");
 
 	const struct zbus_channel *chan;
-	struct zbus_observer_node obs_node;
 
 	while (1) {
 		LOG_INF("Activating filter");
-		zbus_chan_add_obs(&raw_data_chan, &filter_lis, &obs_node, K_MSEC(200));
+		zbus_chan_add_obs(&raw_data_chan, &filter_lis, K_MSEC(200));
 
 		zbus_sub_wait(&state_change_sub, &chan, K_FOREVER);
 
 		LOG_INF("Deactivating filter");
 		zbus_chan_rm_obs(&raw_data_chan, &filter_lis, K_MSEC(200));
 
 		LOG_INF("Bypass filter");
-		zbus_chan_add_obs(&raw_data_chan, &consumer_sub, &obs_node, K_MSEC(200));
+		zbus_chan_add_obs(&raw_data_chan, &consumer_sub, K_MSEC(200));
 
 		zbus_sub_wait(&state_change_sub, &chan, K_FOREVER);