Hallo everybody!
I've recently come by, through Radio Shack closing and an Amazon sale, 3 sets of SecureSam wireless security sensors (5 door/window open and 1 PIR motion each) and 6 433Mhz remote controlled outlets. I had a couple odd 315/433Mhz sensors added individually already, but now I'm feeling like there's got to be an easier way.
My goal is to make a MySensors device with both a transmitter and receiver which simply forwards all received (valid) codes straight to OpenHAB without having to have them pre-programmed and allow OpenHAB to send codes which the node then blindly transmits. This way, new devices can be added within the rules and items definitions without having to reprogram the radio node.
I'm using the V_VAR1 data type and seemingly have come up with a node sketch which successfully sends the received code to the gateway.
/*
MySensors node sketch for adding 315/433Mhz radios to OpenHAB transparently
*/
#include <RCSwitch.h>
#include <MySensor.h>
#include <SPI.h>
#define NODE_ID 105
MySensor gw;
#define CHILD_ID_CODE 0
unsigned long readwait = 1000; //time to wait before transmitting the same code again
unsigned long lastread = 0; //last millis() value code was read
long lastcode; //store last transmitted code
RCSwitch mySwitch = RCSwitch();
MyMessage msgCode(CHILD_ID_CODE, V_VAR1); //using VAR1 data type (24) lacking a better option for passing a string to the gateway
void setup() {
mySwitch.enableReceive(1); // Receiver on inerrupt 1 => that is pin #3
// Initialize library and add callback for incoming messages
gw.begin(incomingMessage, NODE_ID, true);
// Send the sketch version information to the gateway and Controller
gw.sendSketchInfo("ASK Transmit/Receive", "1.0");
//Register to gateway
gw.present(CHILD_ID_CODE, S_CUSTOM);
//315MHz radio initialize
// Transmitter is connected to Arduino Pin #7
mySwitch.enableTransmit(7);
// Optional set pulse length.
mySwitch.setPulseLength(200);
// Optional set protocol (default is 1, will work for most outlets)
mySwitch.setProtocol(1);
// Optional set number of transmission repetitions.
mySwitch.setRepeatTransmit(2);
}
void loop() {
gw.process();
if (mySwitch.available()) {
int value = mySwitch.getReceivedValue(); //used by check function
long code = mySwitch.getReceivedValue(); //int value doesn't end up containing the code so we read it again into a long
//Make sure we don't spam the gateway for devices which transmit multiple times per trigger
//Allow unique IDs through even if the wait isn't over so we don't miss out on other devices
if ((lastread + readwait) <= millis() || lastcode != code) {
if (value == 0) {
Serial.print("Unknown encoding");
} else {
Serial.print("Received ");
Serial.print( mySwitch.getReceivedValue() );
Serial.print(" / ");
Serial.print( mySwitch.getReceivedBitlength() );
Serial.print("bit ");
Serial.print("Protocol: ");
Serial.println( mySwitch.getReceivedProtocol() );
Serial.print("Time: ");
Serial.println(millis()); //watch the time between retransmits to fine-tune the wait value
gw.send(msgCode.set(code)); //send the successfully read code to the gateway
lastread = millis(); //reset last read time
lastcode = code; //store last code
}
}
mySwitch.resetAvailable();
}
}
void incomingMessage(const MyMessage &message) {
// We only expect one type of message from controller. But we better check anyway.
if (message.type==V_VAR1) {
// Transmit code
mySwitch.send(message.sensor, 24);
// Write some debug info
Serial.print("Incoming code to transmit:");
Serial.print(message.sensor);
}
}
My problem now is that I can't quite wrap my head around getting OpenHAB to read the strings and do something. I'm using TimO's tutorial for serial gateway and a hash map for my various nodes. The initial plan was to use something like that to map a code to an item, but my rule-fu is still weak and I'm not having much luck adapting that tutorial to this. I've got my table for mapping a code to an item:
var HashMap<String, String> CodeToItemsMap = NewLinkedHashMap(
"7793834;" -> "Laundry_Room_PIR",
"Laundry_Room_PIR" -> "7793834;",
"4555512;" -> "2_outlet_ON",
"2_outlet_ON" -> "4555512;",
"4541876;" -> "2_outlet_OFF",
"2_outlet_OFF" -> "4541876;",
"6710453;" -> "Front_Door_Trip",
"Front_Door_Trip" -> "6710453;",
and I'm guessing I need to make a new "IF" statement under the V_DIMMER and V_LIGHT ones
if (subType == V_VAR1){
postUpdate(CodeToItemsMap.get( nodeId + ";" + childId + ";"), msg)
println ("Dimmer item: " + CodeToItemsMap.get( nodeId + ";" + childId + ";") + " Dimmer: " + msg )
}
But I'm not having good luck finding a good how-to for the syntax here and every time I futz it up I have to wait 2 solid minutes for my RaspberryPi to reload my rules, so I figured I'd see if anyone has any input.
Am I over(or under)thinking this and there's a simple solution? Seemingly this could be a handy addition to both MySensors and OpenHAB since it would make adding the thousands of readily/cheaply available switched outlets and basic wireless home security devices already on the market nearly effortless.
Thanks in advance for any help I can get, or even a referral in the right direction!
