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Ondrej Lycka
181
Plugins/Plugin_031.c
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181
Plugins/Plugin_031.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-31 AlectoV3 ##
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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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* WS1100, WS1200, WSD-19
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*
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* Author : StuntTeam
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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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* Changelog: v1.0 initial release
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*********************************************************************************************
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* Technische informatie:
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* Decodes signals from Alecto Weatherstation outdoor unit, type 3 (94/126 pulses, 47/63 bits, 433 MHz).
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* WS1100 Message Format: (7 bits preamble, 5 Bytes, 40 bits):
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* AAAAAAA AAAABBBB BBBB__CC CCCCCCCC DDDDDDDD EEEEEEEE
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* Temperature Humidity 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 = Checksum
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* E = Humidity
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*
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* WS1200 Message Format: (7 bits preamble, 7 Bytes, 56 bits):
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* AAAAAAA AAAABBBB BBBB__CC CCCCCCCC DDDDDDDD DDDDDDDD EEEEEEEE FFFFFFFF
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* Temperature Rain LSB Rain MSB ???????? 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 = Rain ( * 0.3 mm)
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* E = ?
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* F = Checksum
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AAAAAAA AAAABBBB BBBBCCCC CCCCCCCC DDDDDDDD DDDDDDDD EEEEEEEE FFFFFFFF
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1111111 00111010 01010010 10000010 00000000 00000000 11111111 10111010 1 24,2 gr 0 mm
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1111111 00111010 01010010 10000010 00000001 00000000 11111111 11111100 0 24,2 gr 0,3 mm
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1111111 00111010 01010010 10000010 00000010 00000000 11111111 00110110 0 24,2 gr 0,6 mm
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1111111 00111010 01010010 10000010 00001000 00000000 11111111 11101000 1 24,2 gr 2,4 mm
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1111111 00111010 01010010 10000010 00001101 00000000 11111111 10000111 0 24,2 gr 3.9 mm
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1111111 00111010 01010010 01110001 00001101 00000000 11111111 01000010 0 22,5 gr 3,9 mm
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1111111 00111010 01010010 01010111 00001101 00000000 11111111 00111011 1 19,9 gr 3,9 mm
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1111111 00111010 01010010 00111110 00010010 00000000 11111111 00111001 1 17,4 gr 5,4 mm
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1111111 00111010 01010010 00101000 00010010 00000000 11111111 00001000 0 15,2 gr 5,4 mm
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1111111 00111010 01010001 00101011 10011010 00000001 11111111 10100011 -10,1 gr/123,0 mm
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WS1200 temp:-101
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WS1200 rain LSB:154
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WS1200 rain MSB:1
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WS1200 rain:1230
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1111111 00111010 01010001 10101101 10011111 00000001 11111111 00110100 2,9 gr/124,5mm
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WS1200 temp:29
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WS1200 rain LSB:159
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WS1200 rain MSB:1
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WS1200 rain:1245
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* 20;AE;DEBUG;Pulses=126;Pulses(uSec)=900,950,825,450,325,450,325,950,325,450,325,450,825,950,825,450,325,950,825,450,350,950,325,450,825,950,825,450,325,450,325,950,825,925,350,450,825,950,825,925,350,450,825,450,350,925,825,450,350,450,325,950,350,450,825,950,325,450,350,450,325,450,825,450,325,450,325,450,325,450,325,950,825,950,325,450,825,950,325,450,825,450,325,950,325,450,325,450,825,925,350,450,350,450,825,950,825,925,350,425,350,450,350,450,350,450,350,450,825,950,825,950,325,450,350,450,825,950,825,950,825,950,325,450,325;
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* 20;AF;Alecto V3;ID=009a;TEMP=ffe7;RAIN=7a;
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\*********************************************************************************************/
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#define WS1100_PULSECOUNT 94
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#define WS1200_PULSECOUNT 126
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#define ALECTOV3_PULSEMID 300/RAWSIGNAL_SAMPLE_RATE
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#ifdef PLUGIN_031
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uint8_t Plugin_031_ProtocolAlectoCRC8( uint8_t *addr, uint8_t len);
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unsigned int Plugin_031_ProtocolAlectoRainBase=0;
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boolean Plugin_031(byte function, char *string) {
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if ((RawSignal.Number != WS1100_PULSECOUNT) && (RawSignal.Number != WS1200_PULSECOUNT)) return false;
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unsigned long bitstream1=0L;
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unsigned long bitstream2=0L;
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byte rc=0;
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int temperature=0;
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byte humidity=0;
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unsigned int rain=0;
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byte checksum=0;
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byte checksumcalc=0;
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byte data[6];
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//==================================================================================
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for (byte x=15; x<=77; x=x+2) { // get first 32 relevant bits
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if (RawSignal.Pulses[x] < ALECTOV3_PULSEMID) {
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bitstream1 = (bitstream1 << 1) | 0x1;
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} else {
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bitstream1 = (bitstream1 << 1);
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}
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}
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for (byte x=79; x<=141; x=x+2) { // get second 32 relevant bits
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if (RawSignal.Pulses[x] < ALECTOV3_PULSEMID) {
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bitstream2 = (bitstream2 << 1) | 0x1;
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} else {
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bitstream2 = (bitstream2 << 1);
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}
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}
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//==================================================================================
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if (bitstream1 == 0) return false; // Sanity check
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data[0] = (bitstream1 >> 24) & 0xff; // Sort data
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data[1] = (bitstream1 >> 16) & 0xff;
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data[2] = (bitstream1 >> 8) & 0xff;
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data[3] = (bitstream1 >> 0) & 0xff;
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data[4] = (bitstream2 >> 24) & 0xff;
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data[5] = (bitstream2 >> 16) & 0xff;
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// ----------------------------------
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if (RawSignal.Number == WS1200_PULSECOUNT) { // verify checksum
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checksum = (bitstream2 >> 8) & 0xff;
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checksumcalc = Plugin_031_ProtocolAlectoCRC8(data, 6);
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} else {
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checksum = (bitstream2 >> 24) & 0xff;
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checksumcalc = Plugin_031_ProtocolAlectoCRC8(data, 4);
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}
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if (checksum != checksumcalc) return false;
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// ----------------------------------
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rc = (bitstream1 >> 20) & 0xff;
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temperature = ((bitstream1 >> 8) & 0x3ff); // 299=12b -400 (0x190) = FF9b
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//temperature = ((bitstream1 >> 8) & 0x3ff) - 400; // 299=12b -400 (0x190) = FF9b
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if (temperature < 400) { // negative temperature value
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temperature = 400 - temperature;
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temperature=temperature | 0x8000; // turn highest bit on for minus values
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} else {
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if (temperature > 0x258) return false; // temperature out of range ( > 60.0 degrees)
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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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Serial.print(F("Alecto V3;")); // Label
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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;", temperature);
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Serial.print( pbuffer );
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if (RawSignal.Number == WS1100_PULSECOUNT) {
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humidity = bitstream1 & 0xff; // alleen op WS1100?
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sprintf(pbuffer, "HUM=%02x;", humidity);
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Serial.print( pbuffer );
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} else {
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rain = (((bitstream2 >> 24) & 0xff) * 256) + ((bitstream1 >> 0) & 0xff);
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// check if rain unit has been reset!
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if (rain < Plugin_031_ProtocolAlectoRainBase) Plugin_031_ProtocolAlectoRainBase=rain;
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if (Plugin_031_ProtocolAlectoRainBase > 0) {
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//UserVar[basevar+1 -1] += ((float)rain - Plugin_031_ProtocolAlectoRainBase) * 0.30;
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sprintf(pbuffer, "RAIN=%02x;", (rain)&0xff);
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Serial.print( pbuffer );
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}
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Plugin_031_ProtocolAlectoRainBase = rain;
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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_031_ProtocolAlectoCRC8( uint8_t *addr, uint8_t len)
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{
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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_031
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