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mavlink_ftp: fix alignment issue

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Beat Küng
2017-09-21 07:33:09 +02:00
parent ea587d585f
commit b072599679
1 changed files with 4 additions and 3 deletions
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src/modules/mavlink/mavlink_ftp.h
+4 -3
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@@ -71,9 +71,10 @@ public:
/// @param worker_data Data to pass to worker
void set_unittest_worker(ReceiveMessageFunc_t rcvMsgFunc, void *worker_data);
/// @brief This is the payload which is in mavlink_file_transfer_protocol_t.payload. We pad the structure ourselves to
/// 32 bit alignment to avoid usage of any pack pragmas.
struct PayloadHeader {
/// @brief This is the payload which is in mavlink_file_transfer_protocol_t.payload.
/// This needs to be packed, because it's typecasted from mavlink_file_transfer_protocol_t.payload, which starts
/// at a 3 byte offset, causing an unaligned access to seq_number and offset
struct __attribute__((__packed__)) PayloadHeader {
uint16_t seq_number; ///< sequence number for message
uint8_t session; ///< Session id for read and write commands
uint8_t opcode; ///< Command opcode