Move declaration for 'packet' into own header

This is more C like and leads to a better modularized project.

core/internals.h

@@ -68,6 +68,7 @@
 #include "management.h"
 #include "objects.h"
 #include "observe.h"
+#include "packet.h"
 #include "registration.h"
 #include "reporting.h"
 #include "uri.h"
@@ -414,9 +415,6 @@ void transaction_step(lwm2m_context_t * contextP, time_t currentTime, time_t * t
 bool transaction_free_userData(lwm2m_context_t * context, lwm2m_transaction_t * transaction);
 bool transaction_set_payload(lwm2m_transaction_t *transaction, uint8_t *buffer, size_t length);
 
-// defined in packet.c
-uint8_t message_send(lwm2m_context_t * contextP, coap_packet_t * message, void * sessionH);
-
 #ifdef LWM2M_SUPPORT_TLV
 // defined in tlv.c
 int tlv_parse(const uint8_t * buffer, size_t bufferLen, lwm2m_data_t ** dataP);

core/packet.h

@@ -0,0 +1,24 @@
+/*******************************************************************************
+ *
+ * Copyright (c) 2024 GARDENA GmbH
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v2.0
+ * and Eclipse Distribution License v1.0 which accompany this distribution.
+ *
+ * The Eclipse Public License is available at
+ *    http://www.eclipse.org/legal/epl-v20.html
+ * The Eclipse Distribution License is available at
+ *    http://www.eclipse.org/org/documents/edl-v10.php.
+ *
+ * Contributors:
+ *   Lukas Woodtli, GARDENA GmbH - Please refer to git log
+ *
+ *******************************************************************************/
+#ifndef WAKAAMA_PACKET_H
+#define WAKAAMA_PACKET_H
+#include "internals.h"
+
+uint8_t message_send(lwm2m_context_t *contextP, coap_packet_t *message, void *sessionH);
+
+#endif /* WAKAAMA_PACKET_H */