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exposer.h
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exposer.h
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#pragma once
#include <Arduino.h>
#define VARNAME(x) (#x)
#define MAX_VARS 10
class Exposer
{
private:
Exposer& operator = (Exposer& other) = delete;
Exposer(const Exposer& other) = delete;
Exposer();
void* m_registeredAdresses[MAX_VARS];
String m_registeredNames[MAX_VARS];
uint8_t m_registeredTypes[MAX_VARS];
uint8_t m_registerCounter = 0;
//const is used to force compiler to add variable in .text only one time
static const uint8_t m_header;
enum
{
WAITING_HEADER, // <
WAITING_OPERATION, // request_All, read, write
WAITING_TARGET, // 0-255. variable register
WAITING_PAYLOAD, // 0-255. data bytes to receive
WAITING_DATA, // data itself
WAITING_CRC, // xor crc, 1 byte.
};
enum
{
REQUEST_ALL = 33, // !
WRITE, // "
READ, // #
};
uint8_t m_currentState = WAITING_HEADER;
uint8_t m_currentOperation = 0;
uint8_t m_currentTarget = 0;
uint8_t m_payloadLeft = 0;
uint8_t m_totalPayload = 0;
uint8_t m_databuffer[30];
uint8_t m_crc = 0;
HardwareSerial* m_serial = &Serial;
void sendAllVariables();
void sendVariableName(uint8_t i);
void sendVariable(uint8_t i);
void writeVariable(uint8_t target, uint8_t totalPayload, uint8_t* databuffer);
void sendByte(uint8_t data, uint8_t* crc);
virtual void sendByte(uint8_t data);
uint8_t m_sizes[7] =
{
sizeof(uint8_t),
sizeof(uint16_t),
sizeof(uint32_t),
sizeof(int8_t),
sizeof(int16_t),
sizeof(int32_t),
sizeof(float),
};
public:
enum
{
_uint8_t,
_uint16_t,
_uint32_t,
_int8_t,
_int16_t,
_int32_t,
_float,
_string
};
static Exposer& self();
void update();
void setSerial(HardwareSerial& serial);
void processByte(uint8_t data);
void registerVariable(String name, uint8_t type, void* address);
};