Home Easy

Project: {{{Naam}}}
Status	lopend
Betrokkenen	Martijn Martijn (Martijn) Rol: deelnemer Deskundig met: Digitale Fabricatie, Elektronica, Hydroponics, Robotica, Software, Solderen, Stappenmotor Werkt aan: Geen projecten :(
Kennisgebied(en)	Home Easy Gebruikt in projecten: Home Easy
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Home Easy protocol/zenders/ontvangers home automation

berichtopbouw

de berichtopbouw zoals het er nu uitziet is als volgt: puls pauze (extra lang) puls pauze (kort/lang afhankelijk van bitwaarde, 0 = kort, 1 = lang) ... puls

in totaal lijken de berichten 57 bits lang te zijn. De handzender zend de bovenstaande reeks minimaal 5 keer uit, waarbij mijn (arduino) ontvanger de eerste pas maar gedeeltelijk meepikt (i.v.m. autogain)

code uitlezen

de volgende code geeft via de seriele poort de ontvangen code weer:

int rxPin = 13;
 
void setup()
{
  pinMode(rxPin, INPUT);
  Serial.begin(9600);
}
 
int t;
char i;
 
void loop()
{
  while((t < 9480 || t > 10350))
    t = pulseIn(rxPin, LOW, 1000000);
  Serial.println(' ');
  Serial.print('>');
  for (i = 0; i < 57; i++) {
    t = pulseIn(rxPin, LOW, 1000000);
    if ((t > 1000 && t < 1360)) 
      Serial.print('1');
    if ((t > 200 && t < 365)) 
      Serial.print('0');
  }
}

timinggrenzen

korte pauze = 30 - 470 us lange pauze = 540 - 2050 us pulsbreedte = 20 - 560 us extra lange pauze = minimaal 2100 us

testcode:

int rxPin = 9;
int txPin = 8;
 
void setup()
{
  pinMode(rxPin, INPUT);
  pinMode(txPin, OUTPUT);
  Serial.begin(9600);
}
 
int t;
char code[57] = {1,1,0,0,0,1,1,1,1,0,0,1,1,0,1,1,0,1,1,0,0,1,1,1,0,1,0,0,1,1,0,0,1,0,1,1,1,0,1,0,1,1,0,1,0,1,1,1,0,0,1,0,0,1,0,1,1};
char cod2[57] = {1,1,0,0,0,1,1,1,1,0,0,1,1,0,1,1,0,1,1,0,0,1,1,1,0,1,0,0,1,1,0,0,1,0,1,1,1,0,1,0,1,1,0,1,0,1,1,0,1,0,1,0,0,1,0,1,1};
char i, j = 5;
 
void loop()
{
  for (j=0;j<5;j++) {
    digitalWrite(txPin, HIGH);
    delayMicroseconds(250);
    digitalWrite(txPin, LOW);
    delayMicroseconds(10000);
    for (i=0;i<57;i++) {
      digitalWrite(txPin, HIGH);
      delayMicroseconds(250);
      digitalWrite(txPin, LOW);
      if (code[i] == 0) 
        delayMicroseconds(200);
      else
        delayMicroseconds(1000);
    }
    digitalWrite(txPin, HIGH);
    delayMicroseconds(250);
    digitalWrite(txPin, LOW);
    delayMicroseconds(10000);
  }
 
  delayMicroseconds(1000000);
 
  for (j=0;j<5;j++) {
    digitalWrite(txPin, HIGH);
    delayMicroseconds(250);
    digitalWrite(txPin, LOW);
    delayMicroseconds(10000);
    for (i=0;i<57;i++) {
      digitalWrite(txPin, HIGH);
      delayMicroseconds(250);
      digitalWrite(txPin, LOW);
      if (cod2[i] == 0) 
        delayMicroseconds(200);
      else
        delayMicroseconds(1000);
    }
    digitalWrite(txPin, HIGH);
    delayMicroseconds(250);
    digitalWrite(txPin, LOW);
    delayMicroseconds(10000);
  }
 
  delayMicroseconds(1000000);
}

interrupt based TX functie

#include "TimerOne.h"
 
int rxPin = 9;
int txPin = 8;
 
void setup()
{
  pinMode(rxPin, INPUT);
  pinMode(txPin, OUTPUT);
  Serial.begin(9600);
  Timer1.initialize(1000);
  Timer1.attachInterrupt(timercallback);
}
 
int t;
char code[57] = {1,1,0,0,0,1,1,1,1,0,0,1,1,0,1,1,0,1,1,0,0,1,1,1,0,1,0,0,1,1,0,0,1,0,1,1,1,0,1,0,1,1,0,1,0,1,1,1,0,0,1,0,0,1,0,1,1};
char cod2[57] = {1,1,0,0,0,1,1,1,1,0,0,1,1,0,1,1,0,1,1,0,0,1,1,1,0,1,0,0,1,1,0,0,1,0,1,1,1,0,1,0,1,1,0,1,0,1,1,0,1,0,1,0,0,1,0,1,1};
char *cod;
volatile char statemachine = 0;
char heBitcount;
char heSendcount;
 
void timercallback()
{
  switch (statemachine) {
  case 1:
    heSendcount = 0;
  case 2:
    digitalWrite(txPin, HIGH);
    Timer1.setPeriod(250);
    statemachine = 3;
    heBitcount = 0;
    break;
  case 3:
    digitalWrite(txPin, LOW);
    Timer1.setPeriod(10000);
    statemachine = 4;
    break;
  case 4:
    digitalWrite(txPin, HIGH);
    Timer1.setPeriod(250);
    if (heBitcount < 57)
      statemachine = 5;
    else
      statemachine = 6;
    break;
  case 5:  
    digitalWrite(txPin, LOW);
    if (cod[heBitcount] == 0)
      Timer1.setPeriod(200);
    else
      Timer1.setPeriod(1000);
    heBitcount++;
    statemachine = 4;
    break;
  case 6:  
    digitalWrite(txPin, LOW);
    heSendcount++;
    Timer1.setPeriod(1000);
    if (heSendcount < 3)
      statemachine = 2;
    else
      statemachine = 0;
    break;
  }
}
 
void loop()
{
  cod = code;
  statemachine = 1;
  while (statemachine != 0);
  delay(1000);
  cod = cod2;
  statemachine = 1;
  while (statemachine != 0);
  delay(1000);
}