GY-63_MS5611/libraries/RS485/RS485.h
2022-05-26 08:56:53 +02:00

67 lines
1.5 KiB
C++

#pragma once
//
// FILE: RS485.h
// AUTHOR: Rob Tillaart
// DATE: 30-okt-2017
// VERSION: 0.2.2
// PURPOSE: Arduino library for RS485 modules
// URL: https://github.com/RobTillaart/RS485
#include "Arduino.h"
#include "ASCII_CONTROL.h"
#define RS485_LIB_VERSION (F("0.2.2"))
class RS485 : public Stream
{
public:
RS485(Stream * stream, uint8_t sendPin, uint8_t deviceID = 0);
// baudRate must match Serial baudRate
// micros are needed before RS485 stream may be reset
// to (default) receiving mode.
void setMicrosPerByte(uint32_t baudRate);
uint32_t getMicrosPerByte() { return _microsPerByte; };
uint8_t getDeviceID() { return _deviceID; };
// Stream interface
int available();
int read();
int peek();
void flush();
// Write
size_t write(uint8_t c);
size_t write(char * array, uint8_t length); // wrapper
size_t write(uint8_t * array, uint8_t length);
// Mode functions
inline void setTXmode() { digitalWrite(_sendPin, HIGH); };
inline void setRXmode() { digitalWrite(_sendPin, LOW); };
uint8_t getMode() { return digitalRead(_sendPin) == HIGH; };
// TODO TEST 0.3.0
// void send(uint8_t deviceID, uint8_t msg[], uint8_t len);
// bool receive(uint8_t &deviceID, uint8_t msg[], uint8_t &len);
private:
Stream * _stream;
uint8_t _sendPin = 0;
uint8_t _deviceID = 0;
uint16_t _microsPerByte = 1000;
// TODO TEST
// uint8_t _bidx = 0;
// uint8_t _buffer[50]; // internal receive buffer
};
// -- END OF FILE --