115 lines
3.5 KiB
C++
115 lines
3.5 KiB
C++
#include "archtech.h"
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#include "buffer.h"
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/*******************************************************************************
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--ARCHTECH PROTOCOL SPECIFICATION--
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----SIGNAL----
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A signal consists of a PREAMBLE, DATA and an POSTAMBLE.
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Each signal is sent 4 times in a row to increase the delivery success rate.
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----PREAMBLE----
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send high for 250 microseconds
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send low for 2,500 microseconds
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----DATA----
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26 bits of transmitter id
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1 bit indicating if the on/off bit is targeting a group
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1 bit indicating "on" or "off"
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4 bits indicating the targeted unit/channel/device
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4 bits indicating a absolute dim level (optional)
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Total: 32 or 36 bits depending if absolute dimming is used
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Each real bit in the data field is sent over air as a pair of two inverted bits.
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real bit bits over air
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1 = "10"
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0 = "01"
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Over air a "1"(one) is sent as:
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send high for 250 microseconds
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send low for 1,250 microseconds
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Over air a "0"(zero) is sent as:
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send high for 250 microseconds
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send low for 250 microseconds
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----POSTAMBLE----
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send high for 250 microseconds
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send low for 10,000 microseconds
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*******************************************************************************/
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#define ARCHTECH_SHORT_MIN 2
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#define ARCHTECH_SHORT_MAX 7
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#define ARCHTECH_LONG_MIN 17
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#define ARCHTECH_LONG_MAX 27
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#define ARCHTECH_PREAMP_MIN 40
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#define ARCHTECH_PREAMP_MAX 48
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#define IS_SHORT(b) ( ARCHTECH_SHORT_MIN <= b && b <= ARCHTECH_SHORT_MAX )
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#define IS_LONG(b) ( ARCHTECH_LONG_MIN <= b && b <= ARCHTECH_LONG_MAX )
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#define IS_PREAMP_LONG(b) ( ARCHTECH_PREAMP_MIN <= b && b <= ARCHTECH_PREAMP_MAX )
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#define IS_ONE(b1,b2,b3,b4) ( IS_SHORT(b1) && IS_LONG(b2) && IS_SHORT(b3) && IS_SHORT(b4) )
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#define IS_ZERO(b1,b2,b3,b4) ( IS_SHORT(b1) && IS_SHORT(b2) && IS_SHORT(b3) && IS_LONG(b4) )
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#define IS_PREAMP(b1,b2) ( IS_SHORT(b1) && IS_PREAMP_LONG(b2) )
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bool parseArctechSelfLearning(uint8_t* bufStartP, uint8_t* bufEndP) { //start points to a "high" buffer byte, end points to a "low" buffer byte
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uint64_t data = 0;
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bool dimValuePresent;
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uint8_t b1,b2,b3,b4;
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//parse preamp
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b1 = *bufStartP;
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stepBufferPointer(&bufStartP);
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b2 = *bufStartP;
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stepBufferPointer(&bufStartP);
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if(!IS_PREAMP(b1, b2)){
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return false;
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}
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//parse data
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uint16_t dataBitsInBuffer = (calculateBufferPointerDistance(bufStartP, bufEndP)-2) / 4; //each bit is representd by 4 high/low
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if (dataBitsInBuffer == 32) {
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dimValuePresent = false;
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}else if(dataBitsInBuffer == 36){
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dimValuePresent = true;
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} else {
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return false;
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}
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for (uint8_t i = 0; i < dataBitsInBuffer; ++i) {
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b1 = *bufStartP; //no of high
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stepBufferPointer(&bufStartP);
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b2 = *bufStartP; //no of low
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stepBufferPointer(&bufStartP);
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b3 = *bufStartP; //no of high
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stepBufferPointer(&bufStartP);
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b4 = *bufStartP; //no of low
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stepBufferPointer(&bufStartP);
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if (IS_ONE(b1,b2,b3,b4)) { //"one" is sent over air
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data <<= 1; //shift in a zero
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data |= 0x1; //add one
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} else if (IS_ZERO(b1,b2,b3,b4)) { //"zero" is sent over air
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data <<= 1; //shift in a zero
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} else {
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return false;
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}
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}
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//data parsed - send event over serial
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Serial.print(F("+Wclass:command;protocol:arctech;model:selflearning;data:0x"));
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uint8_t hexToSend = (dimValuePresent ? 9 : 8);
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for (int8_t i = hexToSend - 1; i >= 0; --i) {
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Serial.print( (byte)((data >> (4 * i)) & 0x0F), HEX);
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}
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Serial.println(F(";"));
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return true;
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}; //end parseArctechSelfLearning
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