working with udp

.gitignore

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+wificredentials.h

lichtorgel.ino

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+//echo -n "110010" >/dev/udp/192.168.178.25/4210
+
+//Node MCU 1.0  ESP-12E
+//1M SPIFFS
+//80MHz
+
+
+#include <ESP8266WiFi.h>
+#include <WiFiUdp.h>
+
+#include "wificredentials.h"
+/* content:
+ * const char* ssid = "SSIDHERE";
+ * const char* password = "password";
+ */
+
+WiFiUDP Udp;
+unsigned int localUdpPort = 4210;  // local port to listen on
+char incomingPacket[255];  // buffer for incoming packets
+bool wlan=true;
+
+#define PIN_SR_DATA      D5
+#define PIN_SR_LTCH      D6
+#define PIN_SR_CLOCK     D7
+
+#define OUTPUTS 6
+
+long lastTickMillis;
+
+uint8_t out[OUTPUTS];
+
+long lastChange=0;
+#define STANDBYTIME 5000 //time in ms after lamps switch off if nothing happened
+boolean standby=false;
+
+void setup()
+{
+  pinMode(PIN_SR_DATA, OUTPUT);
+  pinMode(PIN_SR_LTCH, OUTPUT);
+  pinMode(PIN_SR_CLOCK, OUTPUT);
+
+  shiftRelais(0);
+  
+  Serial.begin(115200);
+  Serial.println();
+
+
+  Serial.printf("Connecting to %s ", ssid);
+  WiFi.begin(ssid, password);
+  uint8_t wlantries=20;
+  while ((WiFi.status() != WL_CONNECTED) && wlan)
+  {
+    delay(500);
+    Serial.print(".");
+    if (wlantries<=0){
+      wlan=false; //deactivate wlan
+    }
+    wlantries--;
+  }
+  
+
+  if(wlan){
+    Serial.println(" connected");
+    Udp.begin(localUdpPort);
+    Serial.printf("Now listening at IP %s, UDP port %d\n", WiFi.localIP().toString().c_str(), localUdpPort);
+  }else{
+    Serial.println("wlan not connected");
+  }
+}
+
+
+void loop()
+{
+  int packetSize = Udp.parsePacket();
+  if (packetSize)
+  {
+    // receive incoming UDP packets
+    Serial.printf("Received %d bytes from %s, port %d\n", packetSize, Udp.remoteIP().toString().c_str(), Udp.remotePort());
+    int len = Udp.read(incomingPacket, 255);
+    if (len > 0)
+    {
+      incomingPacket[len] = 0;
+    }
+    uint16_t data=incomingPacket[0]<<8 | incomingPacket[1];
+    
+    Serial.printf("UDP packet contents: %s\n", incomingPacket);
+    
+    printBinary(data);
+    printBinary(mapData(data));
+    shiftRelais(mapData(data));
+
+    lastChange=millis();
+    standby=false;
+  }
+
+  if (millis()-lastChange >=STANDBYTIME && !standby){
+    Serial.println("Standby");
+    shiftRelais(mapData(0));
+    standby=true;
+  }
+  
+}
+
+void printBinary(uint16_t value){
+  for(int i = 15; i >=0; i--) {
+    Serial.print((value & (1 << ((byte)i) )) ? 1 : 0);
+    //Serial.print(!!(value & (1 << i))); //this should also work
+  }
+  Serial.println();
+}
+
+uint16_t mapData(uint16_t x){
+  uint16_t d=0;
+  d|=moveByte(x,0,1);
+  d|=moveByte(x,1,2);
+  d|=moveByte(x,2,3);
+  d|=moveByte(x,3,4);
+  d|=moveByte(x,4,5);
+  d|=moveByte(x,5,6);
+  d|=moveByte(x,6,7);
+  d|=moveByte(x,7,0);
+  return d;
+}
+
+uint16_t moveByte(uint16_t x,uint8_t from,uint8_t to){
+  //example: x=00110101 from=2 to=0  -> 00000001
+  return ((x&_BV(from))>0) ? _BV(to):0;
+}
+
+void shiftRelais(uint16_t data) {
+  digitalWrite(PIN_SR_LTCH, LOW);
+  shiftOut(PIN_SR_DATA, PIN_SR_CLOCK, MSBFIRST, (data >> 8));
+  shiftOut(PIN_SR_DATA, PIN_SR_CLOCK, MSBFIRST, data & 0xff);
+  digitalWrite(PIN_SR_LTCH, HIGH);
+}

sender.py

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+import socket
+import time
+import random
+
+UDP_IP = "192.168.178.31"
+#UDP_PORT = 4210
+#UDP_IP = "195.160.169.73"
+UDP_PORT = 4210
+
+
+print("UDP target IP:", UDP_IP)
+print("UDP target port:", UDP_PORT)
+
+sock = socket.socket(socket.AF_INET, # Internet
+             socket.SOCK_DGRAM) # UDP
+
+def setLights(outputsB,outputsA):
+
+    message=chr(int(outputsB, 2))+chr(int(outputsA, 2))
+    sock.sendto(message.encode(), (UDP_IP, UDP_PORT))
+
+setLights("00000000","00000000")  #00000000 00000001   -> erster port (orange).  .. 00100000 -> 6. port
+
+
+time.sleep(1)
+setLights("00000000","00000001")
+time.sleep(1)
+setLights("00000000","00000010")
+time.sleep(1)
+setLights("00000000","00000100")
+time.sleep(1)
+setLights("00000000","00001000")
+time.sleep(1)
+setLights("00000000","00010000")
+time.sleep(1)
+setLights("00000000","00100000")
+
+time.sleep(1)
+setLights("00000000","00000000")
+
+
+
+while True:
+    outA="00000000"
+    outB=bin(random.randint(0,1)+random.randint(0,1)*2+random.randint(0,1)*4+random.randint(0,1)*8+random.randint(0,1)*16+random.randint(0,1)*32)
+    setLights(outA,outB)
+    time.sleep(0.5)