104 lines
3.1 KiB
C
104 lines
3.1 KiB
C
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#pragma once
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#include <string>
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#include "util/circular_buffer.h"
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// convert big-endian to little-endian
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#define acio_u16 _byteswap_ushort
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#define acio_u32 _byteswap_ulong
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namespace acioemu {
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constexpr uint8_t ACIO_SOF = 0xAA;
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constexpr uint8_t ACIO_ESCAPE = 0xFF;
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constexpr uint8_t ACIO_BROADCAST = 0x70;
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constexpr uint8_t ACIO_RESPONSE_FLAG = 0x80;
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// general command codes
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enum acio_cmd_codes {
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ACIO_CMD_ASSIGN_ADDRS = 0x0001,
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ACIO_CMD_GET_VERSION = 0x0002,
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ACIO_CMD_STARTUP = 0x0003,
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ACIO_CMD_KEEPALIVE = 0x0080,
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ACIO_CMD_CLEAR = 0x0100,
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};
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// message structs
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#pragma pack(push, 1)
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struct VersionData {
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uint32_t type;
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uint8_t flag;
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uint8_t ver_major;
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uint8_t ver_minor;
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uint8_t ver_rev;
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char code[4];
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char date[16];
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char time[16];
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};
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struct MessageData {
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uint8_t addr;
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union {
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struct {
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uint16_t code;
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uint8_t pid;
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uint8_t data_size;
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union {
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uint8_t raw[0xFF];
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uint8_t status;
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VersionData data_version;
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};
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} cmd;
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struct {
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uint8_t data_size;
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uint8_t raw[0xFF];
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} broadcast;
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};
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};
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#pragma pack(pop)
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// message sizes
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constexpr size_t MSG_HEADER_SIZE = 5;
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constexpr size_t MSG_VERSION_SIZE = sizeof(VersionData);
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class ACIODeviceEmu {
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public:
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// attributes
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uint8_t node_count = 0;
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/*
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* Helper functions for getting/setting the message contents
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*/
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static void set_header(MessageData* data, uint8_t addr, uint16_t code, uint8_t pid, uint8_t data_size);
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static void set_version(MessageData* data, uint32_t type, uint8_t flag,
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uint8_t ver_major, uint8_t ver_minor, uint8_t ver_rev,
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std::string code);
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/*
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* This function creates a basic message with optional parameter data.
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* If data is set to null, the parameter data will be initialized with 0x00
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*/
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static MessageData* create_msg(uint8_t addr, uint16_t cmd, uint8_t pid,
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size_t data_size, uint8_t *data = nullptr);
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static MessageData* create_msg(MessageData* msg_in, size_t data_size, uint8_t *data = nullptr);
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/*
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* Helper functions for generating messages
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*/
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static MessageData* create_msg_status(uint8_t addr, uint16_t code, uint8_t pid, uint8_t status);
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static MessageData* create_msg_status(MessageData* msg_in, uint8_t status);
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virtual ~ACIODeviceEmu() = default;
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virtual bool is_applicable(uint8_t node_offset, uint8_t node);
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virtual bool parse_msg(MessageData *msg_in, circular_buffer<uint8_t> *response_buffer) = 0;
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static void write_msg(const uint8_t *data, size_t size, circular_buffer<uint8_t> *response_buffer);
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static void write_msg(MessageData *msg, circular_buffer<uint8_t> *response_buffer);
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};
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}
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