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https://github.com/letscontrolit/ESPEasy.git
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66 lines
2.7 KiB
C++
66 lines
2.7 KiB
C++
#ifndef DLBus_H
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#define DLBus_H
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#include <Arduino.h>
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/*********************************************************************************************\
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DLBus subs to get values from the receiving bitstream
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\*********************************************************************************************/
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// one data frame has <P092_DataSettings.DataBytes> data bytes + SYNC, e.g. 64 * (8+1+1) + 16 = 656
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// 656 * 2 = 1312 (twice as much as a data frame is saved
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// so there's one complete data frame
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#define DLbus_MaxDataBytes 64
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#define DLbus_AdditionalRecBytes 2
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#define DLbus_StopBits 1
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#define DLbus_StartBits 1
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#define DLBus_SyncBits 16
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#define DLBus_ReserveBytes 20
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#define DLBus_BitChangeFactor 2
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#define DLbus_MaxDataBits (((DLbus_MaxDataBytes + DLbus_AdditionalRecBytes) * (DLbus_StartBits + 8 + DLbus_StopBits) + DLBus_SyncBits) * DLBus_BitChangeFactor) + DLBus_ReserveBytes
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// MaxDataBits is double of the maximum bit length because each bit change is stored
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// (((64+2) * (8+1+1) + 16) * 2) + 50 = 1402 bytes
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class DLBus
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{
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public:
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DLBus(); // constructor of DLBus object
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~DLBus(); // destructor of DLBus object
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volatile uint8_t ISR_DLB_Pin = 0xFF;
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volatile boolean ISR_Receiving = false; // receiving flag
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volatile boolean ISR_AllBitsReceived = false;
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volatile uint16_t ISR_PulseCount; // number of received pulses
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volatile uint16_t ISR_PulseNumber; // max naumber of the received pulses
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volatile uint16_t ISR_MinPulseWidth, ISR_MaxPulseWidth, ISR_MinDoublePulseWidth, ISR_MaxDoublePulseWidth;
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// identification bytes for each DL bus device
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uint8_t DeviceBytes[2];
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uint8_t ByteStream[DLbus_MaxDataBits / 8 + 1]; // every bit gets sorted into a bitmap
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boolean IsLogLevelInfo = false;
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uint8_t LogLevelInfo = 0xff;
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uint8_t LogLevelError = 0xFF;
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void attachDLBusInterrupt(void);
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void StartReceiving(void);
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boolean CheckTimings(void);
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boolean Processing(void);
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boolean CheckCRC(uint8_t IdxCRC);
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private:
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volatile uint32_t ISR_TimeLastBitChange = 0; // remember time of last transition
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uint8_t DLbus_ChangeBitStream[DLbus_MaxDataBits]; // received bit change stream (each bit change is extended to uint8_t, containing the timing flags)
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uint16_t BitNumber; // bit number of the received DLbus_ChangeBitStream
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static void ISR(void);
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void ISR_PinChanged(void);
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void ProcessBit(uint8_t b);
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int Analyze(void);
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void Invert(void);
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uint8_t ReadBit(int pos);
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void WriteBit(int pos, uint8_t set);
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void Trim(int start_bit);
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boolean CheckDevice(void);
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static DLBus* __instance;
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void AddToInfoLog(const String& string);
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void AddToErrorLog(const String& string);
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};
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#endif
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