GY-63_MS5611/libraries/RS485/RS485.h
2024-04-16 21:03:41 +02:00

76 lines
1.8 KiB
C++

#pragma once
//
// FILE: RS485.h
// AUTHOR: Rob Tillaart
// DATE: 30-okt-2017
// VERSION: 0.5.1
// PURPOSE: Arduino library for RS485 modules
// URL: https://github.com/RobTillaart/RS485
#include "Arduino.h"
#include "ASCII_CONTROL.h"
#define RS485_LIB_VERSION (F("0.5.1"))
class RS485 : public Stream
{
public:
RS485(Stream * stream, uint8_t sendPin, uint8_t deviceID = 0);
uint8_t getDeviceID();
// 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; };
// EXPERIMENTAL
// - in a derived class?
// - use at own risk
// send ASCII encoded messages from one master to multiple clients.
// msg[] = 32..127
// len = 1.. 48 (internal receive buffer is 50)
size_t send(uint8_t receiverID, uint8_t msg[], uint8_t len);
bool receive(uint8_t &senderID, uint8_t msg[], uint8_t &len);
// EXPERIMENTAL
size_t send(uint8_t receiverID, char msg[], uint8_t len);
bool receive(uint8_t &senderID, char msg[], uint8_t &len);
// EXPERIMENTAL
void setMicrosPerByte(uint16_t mpb) { _microsPerByte = mpb; };
uint16_t getMicrosPerByte() { return _microsPerByte; };
private:
Stream * _stream;
uint8_t _sendPin = 0;
uint8_t _deviceID = 0;
uint16_t _microsPerByte = 1100;
// EXPERIMENTAL
uint8_t _bidx = 0;
uint8_t _buffer[50]; // internal receive buffer
};
// -- END OF FILE --