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