Updated Avtp_CanBrief_GetPayload and Avtp_Can_GetPayload for constant pointer to a constant

Signed-off-by: Jignesh Thanki <jignesh.thanki@in.bosch.com>

Author: Jignesh-007

examples/acf-can/acf-can-common.c

@@ -301,7 +301,7 @@ int avtp_to_can(uint8_t* pdu, frame_t* can_frames, Avtp_CanVariant_t can_variant
         }
 
         canid_t can_id = Avtp_Can_GetCanIdentifier((Avtp_Can_t*)acf_pdu);
-        uint8_t* can_payload = Avtp_Can_GetPayload((Avtp_Can_t*)acf_pdu);
+        const uint8_t* can_payload = Avtp_Can_GetPayload((Avtp_Can_t*)acf_pdu);
         uint16_t acf_msg_length = Avtp_Can_GetAcfMsgLength((Avtp_Can_t*)acf_pdu)*4;
         uint16_t can_payload_length = Avtp_Can_GetCanPayloadLength((Avtp_Can_t*)acf_pdu);
         proc_bytes += acf_msg_length;

include/avtp/acf/Can.h

@@ -157,7 +157,7 @@ void Avtp_Can_CreateAcfMessage(Avtp_Can_t* can_pdu, uint32_t frame_id, uint8_t*
  * @param can_pdu Pointer to the first bit of an 1722 ACF CAN PDU.
  * @return Pointer to ACF CAN frame payload
  */
-uint8_t* Avtp_Can_GetPayload(Avtp_Can_t* const can_pdu);
+const uint8_t* Avtp_Can_GetPayload(const Avtp_Can_t* const can_pdu);
 
 /**
  * Sets the CAN payload in an ACF CAN frame.

include/avtp/acf/CanBrief.h

@@ -145,7 +145,7 @@ void Avtp_CanBrief_CreateAcfMessage(Avtp_CanBrief_t* can_pdu, uint32_t frame_id,
 * @param can_pdu Pointer to the first bit of an 1722 ACF CAN Brief PDU.
 * @return Pointer to ACF CAN frame payload
 */
-uint8_t* Avtp_CanBrief_GetPayload(const Avtp_CanBrief_t* const can_pdu);
+const uint8_t* Avtp_CanBrief_GetPayload(const Avtp_CanBrief_t* const can_pdu);
 
 /**
 * Sets the CAN payload in an ACF CAN Brief frame.

src/avtp/acf/Can.c

@@ -271,7 +271,7 @@ void Avtp_Can_SetPayload(Avtp_Can_t* pdu, uint8_t* payload,
     memcpy(pdu->payload, payload, payload_length);
 }
 
-uint8_t* Avtp_Can_GetPayload(Avtp_Can_t* const pdu)
+const uint8_t* Avtp_Can_GetPayload(const Avtp_Can_t* const pdu)
 {
     return pdu->payload;
 }

src/avtp/acf/CanBrief.c

@@ -260,7 +260,7 @@ void Avtp_CanBrief_Finalize(Avtp_CanBrief_t* can_pdu, uint16_t payload_length)
     Avtp_CanBrief_SetPad(can_pdu, padSize);
 }
 
-uint8_t* Avtp_CanBrief_GetPayload(const Avtp_CanBrief_t* const can_pdu) {
+const uint8_t* Avtp_CanBrief_GetPayload(const Avtp_CanBrief_t* const can_pdu) {
     return can_pdu->payload;
 }