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This commit is contained in:
Ondrej Lycka
166
Plugins/Plugin_100.c
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166
Plugins/Plugin_100.c
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//#######################################################################################################
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//## This Plugin is only for use with the RFLink software package ##
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//## Plugin-100 AlectoV2 ##
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//## > 868 MHz Plugin < ##
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//#######################################################################################################
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/*********************************************************************************************\
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* Dit protocol zorgt voor ontvangst van Alecto weerstation buitensensoren
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*
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* Author : Martinus van den Broek
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* Support : http://sourceforge.net/projects/rflink/
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* License : This code is free for use in any open source project when this header is included.
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* Usage of any parts of this code in a commercial application is prohibited!
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*********************************************************************************************
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* Technische informatie:
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* DKW2012 Message Format: (11 Bytes, 88 bits):
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* AAAAAAAA AAAABBBB BBBB__CC CCCCCCCC DDDDDDDD EEEEEEEE FFFFFFFF GGGGGGGG GGGGGGGG HHHHHHHH IIIIIIII
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* Temperature Humidity Windspd_ Windgust Rain____ ________ Winddir Checksum
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* A = start/unknown, first 8 bits are always 11111111
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* B = Rolling code
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* C = Temperature (10 bit value with -400 base)
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* D = Humidity
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* E = windspeed (* 0.3 m/s, correction for webapp = 3600/1000 * 0.3 * 100 = 108))
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* F = windgust (* 0.3 m/s, correction for webapp = 3600/1000 * 0.3 * 100 = 108))
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* G = Rain ( * 0.3 mm)
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* H = winddirection (0 = north, 4 = east, 8 = south 12 = west)
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* I = Checksum, calculation is still under investigation
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*
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* WS3000 and ACH2010 systems have no winddirection, message format is 8 bit shorter
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* Message Format: (10 Bytes, 80 bits):
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* AAAAAAAA AAAABBBB BBBB__CC CCCCCCCC DDDDDDDD EEEEEEEE FFFFFFFF GGGGGGGG GGGGGGGG HHHHHHHH
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* Temperature Humidity Windspd_ Windgust Rain____ ________ Checksum
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*
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* --------------------------------------------------------------------------------------------
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* DCF Time Message Format: (NOT DECODED!, we already have time sync through webapp)
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* AAAAAAAA BBBBCCCC DDDDDDDD EFFFFFFF GGGGGGGG HHHHHHHH IIIIIIII JJJJJJJJ KKKKKKKK LLLLLLLL MMMMMMMM
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* 11 Hours Minutes Seconds Year Month Day ? Checksum
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* B = 11 = DCF
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* C = ?
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* D = ?
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* E = ?
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* F = Hours BCD format (7 bits only for this byte, MSB could be '1')
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* G = Minutes BCD format
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* H = Seconds BCD format
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* I = Year BCD format (only two digits!)
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* J = Month BCD format
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* K = Day BCD format
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* L = ?
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* M = Checksum
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\*********************************************************************************************/
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#define DKW2012_MIN_PULSECOUNT 164
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#define DKW2012_MAX_PULSECOUNT 176
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#define ACH2010_MIN_PULSECOUNT 160 // reduce this value (144?) in case of bad reception
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#define ACH2010_MAX_PULSECOUNT 160
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#ifdef PLUGIN_100
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uint8_t Plugin_100_ProtocolAlectoCRC8( uint8_t *addr, uint8_t len);
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boolean Plugin_100(byte function, char *string) {
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if (!(((RawSignal.Number >= ACH2010_MIN_PULSECOUNT) && (RawSignal.Number <= ACH2010_MAX_PULSECOUNT)) || ((RawSignal.Number >= DKW2012_MIN_PULSECOUNT) && (RawSignal.Number <= DKW2012_MAX_PULSECOUNT)))) return false;
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byte c=0;
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byte rfbit;
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byte data[10];
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byte msgtype=0;
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byte rc=0;
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byte checksum=0;
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byte checksumcalc=0;
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byte maxidx = 8;
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//==================================================================================
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if(RawSignal.Number > ACH2010_MAX_PULSECOUNT) maxidx = 9;
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// Get message back to front as the header is almost never received complete for ACH2010
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byte idx = maxidx;
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for(byte x=RawSignal.Number; x>0; x=x-2) {
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if(RawSignal.Pulses[x-1]*RAWSIGNAL_SAMPLE_RATE < 0x300) rfbit = 0x80; else rfbit = 0;
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data[idx] = (data[idx] >> 1) | rfbit;
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c++;
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if (c == 8) {
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if (idx == 0) break;
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c = 0;
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idx--;
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}
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}
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//==================================================================================
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checksum = data[maxidx];
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checksumcalc = Plugin_100_ProtocolAlectoCRC8(data, maxidx);
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msgtype = (data[0] >> 4) & 0xf; // msg type must be 5 or 10
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rc = (data[0] << 4) | (data[1] >> 4); // rolling code
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if (checksum != checksumcalc) return false;
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if ((msgtype != 10) && (msgtype != 5)) return true; // why true?
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//==================================================================================
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unsigned int temp = 0;
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unsigned int rain=0;
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byte hum = 0;
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int wdir = 0;
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int wspeed = 0;
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int wgust = 0;
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temp = (((data[1] & 0x3) * 256 + data[2]) - 400);
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hum = data[3];
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wspeed = data[4] * 108;
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wspeed = wspeed / 10;
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wgust = data[5] * 108;
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wgust = wgust / 10;
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rain = (data[6] * 256) + data[7];
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if (RawSignal.Number >= DKW2012_MIN_PULSECOUNT) {
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wdir = (data[8] & 0xf);
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}
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// ----------------------------------
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// Output
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// ----------------------------------
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sprintf(pbuffer, "20;%02X;", PKSequenceNumber++); // Node and packet number
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Serial.print( pbuffer );
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// ----------------------------------
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if (RawSignal.Number >= DKW2012_MIN_PULSECOUNT) {
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Serial.print("DKW2012;"); // Label
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} else {
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Serial.print("Alecto V2;"); // Label
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}
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sprintf(pbuffer, "ID=00%02x;", rc); // ID
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Serial.print( pbuffer );
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sprintf(pbuffer, "TEMP=%04x;", temp);
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Serial.print( pbuffer );
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sprintf(pbuffer, "HUM=%02x;", hum);
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Serial.print( pbuffer );
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sprintf(pbuffer, "WINSP=%04x;", wspeed);
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Serial.print( pbuffer );
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sprintf(pbuffer, "WINGS=%04x;", wgust);
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Serial.print( pbuffer );
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sprintf(pbuffer, "RAIN=%04x;", rain);
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Serial.print( pbuffer );
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if (RawSignal.Number >= DKW2012_MIN_PULSECOUNT) {
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sprintf(pbuffer, "WINDIR=%04d;", wdir);
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Serial.print( pbuffer );
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}
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Serial.println();
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// ----------------------------------
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RawSignal.Repeats=true; // suppress repeats of the same RF packet
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RawSignal.Number=0; // do not process the packet any further
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return true;
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}
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/*********************************************************************************************\
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* Calculates CRC-8 checksum
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* reference http://lucsmall.com/2012/04/29/weather-station-hacking-part-2/
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* http://lucsmall.com/2012/04/30/weather-station-hacking-part-3/
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* https://github.com/lucsmall/WH2-Weather-Sensor-Library-for-Arduino/blob/master/WeatherSensorWH2.cpp
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\*********************************************************************************************/
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uint8_t Plugin_100_ProtocolAlectoCRC8( uint8_t *addr, uint8_t len) {
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uint8_t crc = 0;
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// Indicated changes are from reference CRC-8 function in OneWire library
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while (len--) {
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uint8_t inbyte = *addr++;
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for (uint8_t i = 8; i; i--) {
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uint8_t mix = (crc ^ inbyte) & 0x80; // changed from & 0x01
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crc <<= 1; // changed from right shift
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if (mix) crc ^= 0x31;// changed from 0x8C;
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inbyte <<= 1; // changed from right shift
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}
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}
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return crc;
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}
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#endif // PLUGIN_100
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