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48 lines
1.0 KiB
C++
48 lines
1.0 KiB
C++
#ifndef __P_SERIAL_PACKET_H__
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#define __P_SERIAL_PACKET_H__
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// start byte
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// src_addr {1} +
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// dest_addr {1} +
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// frame_length {1} +
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// checksum {1} +
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// frame_data {510} -- making it 510 instead of 511 so it is easily divisible
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#define MAX_MESSAGE_LEN (516)
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#define MAX_FRAME_DATA_LEN (510)
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#define MASTER_ADDR (0x01)
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#include <cinttypes>
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#include <iostream>
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class ps_packet
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{
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public:
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// for encoding
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ps_packet(uint8_t _src_addr, uint8_t _dest_addr, uint8_t* _frame_data,
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uint8_t _frame_data_len);
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// for decoding
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ps_packet(uint8_t* _msg, size_t _msg_len);
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~ps_packet();
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uint8_t* src_addr;
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uint8_t* dest_addr;
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uint8_t* frame_data_len;
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uint8_t* checksum;
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uint8_t* frame_data;
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uint8_t data[MAX_MESSAGE_LEN];
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std::size_t msg_len;
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bool encode();
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bool decode();
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static ps_packet from_xy(int x, int y);
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#ifdef DEBUG
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static ps_packet test_packet_send();
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static ps_packet test_packet_recv();
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void show_packet() const;
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#endif
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private:
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bool stuff_bytes();
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bool destuff_bytes();
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bool validate();
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uint8_t calc_checksum();
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};
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#endif
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