README.md

@@ -2,4 +2,3 @@
 |-------|------------------|-----------------|---------|---------|
 | 1.0   |               D2 |              D3 |      U7 |      U8 |
 | 2.0   |               D2 |            (D10)|      U8 |      U7 |
-| 2.1   |               D3 |              D2 |      U8 |      U7 | 

Software/BiDi/BiDi.ino

@@ -0,0 +1,95 @@
+/* RS 485-Implementierung, die sowohl Schreiben als auch Lesen kann */
+/* Basis für andere Projekte */
+
+#define BUTTON 2
+#define RECEIVE 3
+#define RECEIVE_ENABLE 4
+#define SEND 5
+#define SEND_ENABLE 6
+
+#define MAX_LEN 128
+
+void setup() {
+  // Buttons connected to analog input lines
+  pinMode(A0,INPUT_PULLUP);
+  pinMode(A1,INPUT_PULLUP);
+  pinMode(A2,INPUT_PULLUP);
+  pinMode(A3,INPUT_PULLUP);
+  pinMode(A4,INPUT_PULLUP);
+  pinMode(A5,INPUT_PULLUP);
+  pinMode(A6,INPUT_PULLUP);
+  pinMode(A7,INPUT_PULLUP);
+  // Currently, all buttons are also connected via a diode to an interruptable pin, to notify on input changes.
+  // This interruptable pin should be assgined to BUTTON
+  pinMode(BUTTON,INPUT_PULLUP);
+  attachInterrupt(digitalPinToInterrupt(BUTTON),button,FALLING); // interrupt for button change
+
+  // Set up pins for RS485 connection
+  pinMode(RECEIVE, INPUT);
+  pinMode(RECEIVE_ENABLE, OUTPUT);
+  pinMode(SEND, OUTPUT);
+  pinMode(SEND_ENABLE, OUTPUT);
+  attachInterrupt(digitalPinToInterrupt(RECEIVE),receive,CHANGE); // interrupt for incoming RS485 traffic
+  
+  reset485();
+  buttons = 0x0;
+}
+
+void button() {
+  buttons = 0xFF ^ (digitalRead(A7)<<7 | digitalRead(A6)<<6 | digitalRead(A5)<<5 | digitalRead(A4)<<4 | digitalRead(A3)<<3 | (!digitalRead(A2))<<2 | digitalRead(A1)<<1 | digitalRead(A0));  
+}
+
+void receive(){
+  bool received_bit = digitalRead(RECEIVE);
+  curr = micros();
+  duration = curr - last;
+  Serial.print("Input switched to ");
+  Serial.print(received_bit?"H":"L");  
+  Serial.print(" after ");
+  Serial.print(duration);
+  Serial.println(" ticks");
+  last = curr;
+  if (duration > MAX_TICKS) reset485();
+  received_bit = !received_bit; // received_bit is the current value, the duration of the previous value (=inverted) has been measured
+  duration /= BASE;
+  while (duration > 0){
+    byte_idx--;
+    recv |= received_bit<<byte_idx;
+    if (byte_idx == 0) {
+      msg[msg_idx] = recv;
+      msg_idx++;
+      byte_idx = 8;
+      if (recv == 0x00) message_received();
+    }
+    duration--;
+  }
+}
+
+void reset485(){
+  byte_idx = 8;
+  msg_idx = 0;
+  recv=0x0;
+}
+
+void message_received(){
+  for (int i=0; i<MAX_LEN; i++) message[i]=msg[i];
+  reset485();
+}
+
+void button_pressed(int i){
+  Serial.println("not implemented");
+}
+
+void loop(){
+  if (buttons>0){
+    for (int i=0; i<7; i++){
+      if (buttons & (1<<i)) button_pressed(i);     
+    }    
+  }
+  if (message[0] != 0x0){
+    Serial.print("Received '");
+    Serial.print(message);
+    Serial.println("'");    
+    message[0] = 0x0;
+  }
+}

Software/LCDReceiver/LCDReceiver.ino

@@ -9,19 +9,19 @@
 #include <LiquidCrystal.h>
 #include <SoftRS485.h>
 
-#define Max485_RO 2 // read-output of Max485
+#define PROGRAM "RS485-Nano Rev 2.0 / LCDReceive 1.2"
-#define Max485_RE 8 // not-read-enable of Max485
-#define Max485_DE 8 // data enable of Max485
-#define Max485_DI 9 // data input of Max485
 
-#define LCD_RS 10
+#define Max485_RO 3 // read-output of Max485
-#define LCD_EN 11
+#define Max485_RE 5 // not-read-enable of Max485
-#define LCD_D4 4
+#define Max485_DE 9 // data enable of Max485
-#define LCD_D5 5
+#define Max485_DI 8 // data input of Max485
-#define LCD_D6 6
-#define LCD_D7 7
 
-#define PROGRAM "RS485-Nano 2.1 / LCDReceive 1.2"
+#define LCD_RS 4
+#define LCD_EN 6
+#define LCD_D4 7
+#define LCD_D5 11
+#define LCD_D6 12
+#define LCD_D7 13
 
 // initialize the library by associating any needed LCD interface pin with the arduino pin number it is connected to
 LiquidCrystal lcd(LCD_RS, LCD_EN, LCD_D4, LCD_D5, LCD_D6, LCD_D7);
@@ -29,12 +29,10 @@ LiquidCrystal lcd(LCD_RS, LCD_EN, LCD_D4, LCD_D5, LCD_D6, LCD_D7);
 void setup() {
   Serial.begin(115200);
   init485(Max485_RO,Max485_RE,Max485_DE,Max485_DI); // library initialization:
-
   // set up the LCD's number of columns and rows:
-  lcd.begin(16, 4);
+  lcd.begin(16, 2);
   // Print a message to the LCD.
   printMessage(PROGRAM);
-
 }
 
 void printMessage(String s){
@@ -45,7 +43,6 @@ void printMessage(String s){
     auto cstr = s.c_str();
     for (int i=0;i<s.length();i++){
       if (col == 0 && cstr[i] == ' ') continue;
-      if (cstr[i] == '{' || cstr[i] == '}') continue;
       lcd.print(cstr[i]);
       col++;
       if (cstr[i]==',' || col==16){

Software/Receiver/Receiver.ino

@@ -0,0 +1,61 @@
+// Für Controllino könnte man benutzen: sRx = 20, sTx = 21, enable = 53
+
+int sTx = 2;
+int sRx = 3;
+
+long base = 100;
+long rst = base*10; // reset
+boolean bt = false;
+long dif = 0;
+long lt = 0;
+long now = 0;
+char rcv = 0;
+int idx = 0;
+String message;
+void setup(){
+  pinMode(sRx,INPUT);
+  pinMode(sTx,OUTPUT);
+  attachInterrupt(digitalPinToInterrupt(sRx),change485,CHANGE);
+  Serial.begin(115200);  
+  Serial.println("Receiver ready");
+}
+
+void reset485(long dif){
+    rcv = 0;
+    idx = -1;
+    message.reserve(32);
+}
+void change485(){
+  bool bt = digitalRead(sRx);
+  now = micros();
+  dif = now - lt;
+  lt = now;
+  if (dif > rst){
+    reset485(dif);
+  } else {
+    handle485(!bt,dif);
+  }
+}
+
+void handle485(boolean bt, long dif){
+  long count = dif/base;
+  for (int i=0; i<count; i++) push485(bt);
+}
+
+void push485(boolean bt){
+  if (idx>=0) rcv |= bt<<idx;
+  idx++;
+  
+  if (idx == 8){
+    if (rcv == 13) {
+      Serial.println(message);
+      message = "";
+    } else {
+      message+=rcv;
+    } 
+    idx =0;
+    rcv =0;
+  }
+}
+
+void loop(){}

Software/Sender/Sender.ino

@@ -20,13 +20,13 @@
 #define ID 0
 #define PROGRAM "Sender"
 #define SW_VERSION "1.3"
-#define HW_VERSION "2.1"
+#define HW_VERSION "2.0"
 
-#define BTN_INT 3 // button interrupt pin
+#define BTN_INT 2 // button interrupt pin
-#define Max485_RO 2 // read-output of Max485
+#define Max485_RO 3 // read-output of Max485
-#define Max485_RE 3 // not-read-enable of Max485
+#define Max485_RE 5 // not-read-enable of Max485
-#define Max485_DE 8 // data enable of Max485
+#define Max485_DE 9 // data enable of Max485
-#define Max485_DI 9 // data input of Max485
+#define Max485_DI 8 // data input of Max485
 
 #define TRESHOLD 1024
 #define TRIGGER_LEVEL 200
@@ -81,7 +81,7 @@ void isr(){
   raw_states[7] = analogRead(21)<TRIGGER_LEVEL;
 #ifdef LOG_TO_SERIAL
   for (int i=0;i<8;i++){
-    Serial.print(" ");
+    Serial.print(" ");    
     Serial.print(raw_states[i]);
     Serial.print(" ");
   }

Software/SerialTransceiver/SerialTransceiver.ino

@@ -8,13 +8,12 @@
 // include the library code:
 #include <SoftRS485.h>
 
+#define Max485_RO 3 // read-output of Max485
+#define Max485_RE 5 // not-read-enable of Max485
+#define Max485_DE 9 // data enable of Max485
+#define Max485_DI 8 // data input of Max485
 
-#define Max485_RO 2 // read-output of Max485
+#define PROGRAM "{hw:RS485-Nano rev 2.0,firmware:Transceiver,version:1.0}"
-#define Max485_RE 3 // not-read-enable of Max485
-#define Max485_DE 8 // data enable of Max485
-#define Max485_DI 9 // data input of Max485
-
-#define PROGRAM "{hw:RS485-Nano rev 2.1,firmware:Transceiver,version:1.0}"
 
 String message = "";
 char c;

Software/TempSender/TempSender.ino

@@ -21,15 +21,15 @@
 // 6=Bad OG
 
 #define ID 0
-#define HW_VERSION "2.1"
+#define HW_VERSION "2.0"
 #define PROGRAM "TempSender"
 #define SW_VERSION "1.5"
 
-#define BTN_INT 3 // button interrupt pin
+#define BTN_INT 2 // button interrupt pin
-#define Max485_RO 2 // read-output of Max485
+#define Max485_RO 3 // read-output of Max485
-#define Max485_RE 3 // not-read-enable of Max485
+#define Max485_RE 5 // not-read-enable of Max485
-#define Max485_DE 8 // data enable of Max485
+#define Max485_DE 9 // data enable of Max485
-#define Max485_DI 9 // data input of Max485
+#define Max485_DI 8 // data input of Max485
 
 #define TRESHOLD 1024
 #define TRIGGER_LEVEL 200
@@ -47,7 +47,6 @@ unsigned long capacitor[8];
 unsigned long times[8];
 unsigned long sensor_time = 0;
 
-// these values are used for temperature processing
 SimpleDHT22 sensor(DHT_PIN);
 float temperature = 0;
 float humidity = 0;

Software/TempSenderPlusIR/TempSenderPlusIR.ino

@@ -24,13 +24,13 @@
 #define ID 0
 #define PROGRAM "Temp+IR"
 #define SW_VERSION "0.1"
-#define HW_VERSION "2.1"
+#define HW_VERSION "2.0"
 
-#define BTN_INT 3 // button interrupt pin
+#define BTN_INT 2 // button interrupt pin
-#define Max485_RO 2 // read-output of Max485
+#define Max485_RO 3 // read-output of Max485
-#define Max485_RE 3 // not-read-enable of Max485
+#define Max485_RE 5 // not-read-enable of Max485
-#define Max485_DE 8 // data enable of Max485
+#define Max485_DE 9 // data enable of Max485
-#define Max485_DI 9 // data input of Max485
+#define Max485_DI 8 // data input of Max485
 
 #define TRESHOLD 1024
 #define TRIGGER_LEVEL 200