TwePacketUART

The TwePacketAppUart class is the format in which the extended format of the App_UART is received by the parent and repeater application App_Wings.

class TwePacketAppUART : public TwePacket, public DataAppUART

Various information in the packet data is stored in DataAppUART after parse<TwePacketUART>() execution.

The simple format cannot be interpreted. parse<TwePacketUART>() returns E_PKT::PKT_ERROR. To check the contents, refer to the original byte sequence directly.

DataAppUART structure

struct DataAppUART {
		/**
		 * source address (Serial ID)
		 */
		uint32_t u32addr_src;

		/**
		 * source address (Serial ID)
		 */
		uint32_t u32addr_dst;

		/**
		 * source address (logical ID)
		 */
		uint8_t u8addr_src;

		/**
		 * destination address (logical ID)
		 */
		uint8_t u8addr_dst;

		/**
		 * LQI value
		 */
		uint8_t u8lqi;

		/**
		 * Response ID
		 */
		uint8_t u8response_id;

		/**
		 * Payload length
		 */
		uint16_t u16paylen;

		/**
		 * payload
		 */
#if MWX_PARSER_PKT_APPUART_FIXED_BUF == 0
		mwx::smplbuf_u8_attach payload;
#else
		mwx::smplbuf_u8<MWX_PARSER_PKT_APPUART_FIXED_BUF> payload;
#endif
	};

The payload is the data part, but the method of data storage changes depending on the macro definition.

If MWX_PARSER_PKT_APPUART_FIXED_BUF is compiled with the value 0, payload refers directly to the byte sequence for packet analysis. If the value of the original byte sequence is changed, the data in payload will be destroyed.

If you define the value of MWX_PARSER_PKT_APPUART_FIXED_BUF to be greater than 0, the payload will allocate a buffer of that value (bytes). However, if the data of the serial message exceeds the buffer size, parse<TwePacketAppUART>() fails and returns E_PKT::PKT_ERROR.