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projects:neopixel-bandwidth-room-light [2017-10-14 20:34]
mrweedwood [Flash] 		projects:neopixel-bandwidth-room-light [2017-10-15 11:00]
trinitor [snmp2neopixel.sh]
Line 47: Line 47:
 ===== Programm ===== ===== Programm =====
 <code> <code>
-Todo+#include <ESP8266WiFi.h> 
 +#include <WiFiUdp.h> 
 +#include <ArduinoJson.h> 
 +#include <Adafruit_NeoPixel.h> 
 +#ifdef __AVR__ 
 +  #include <avr/power.h> 
 +#endif 
 + 
 +///////////////////////////// config ///////////////////////////// 
 +// Network 
 +const char*  ssid         = "yourSSID"; 
 +const char*  password     = "yourPassw0rd"; 
 +unsigned int localUdpPort = 2342; 
 +char incomingPacket[255];   
 +char replyPacekt[] = "message received";  
 + 
 +// neopixel 
 +const int LEDPIN          =   15; 
 +const int NUMPIXELS       =  300; 
 +int displayrefresh        =   10; 
 +int shiftpixels           =    2; //2 = shift pixels, 1 = no shift 
 +////////////////////////////////////////////////////////////////// 
 + 
 +// usage examples: 
 +// echo "{red:0,green:100,blue:0}" | nc -w 0 -u 192.168.x.x 2342 
 +// echo "{red:32,green:32,blue:0,all:1}" | nc -w 0 -u 192.168.x.x 2342 
 +// echo "{clearall:1}" | nc -w 0 -u 192.168.x.x 2342 
 +// echo "{refresh:50}" | nc -w 0 -u 192.168.x.x 2342 
 +// echo "{red:0,green:100,blue:0,pin:50}" | nc -w 0 -u 192.168.x.x 2342 
 +// echo "{scroll:1}" | nc -w 0 -u 192.168.x.x 2342 
 + 
 + 
 +WiFiUDP Udp; 
 +Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, LEDPIN, NEO_GRB + NEO_KHZ800); 
 + 
 +void setup() 
 +{ 
 +  Serial.begin(115200); 
 +  Serial.println(); 
 +  Serial.printf("Connecting to %s ", ssid); 
 + 
 +  WiFi.begin(ssid, password); 
 +  while (WiFi.status() != WL_CONNECTED) 
 +  { 
 +    delay(500); 
 +    Serial.print("."); 
 +  } 
 +  Serial.println(" connected"); 
 + 
 +  Udp.begin(localUdpPort); 
 +  Serial.printf("Now listening at IP %s, UDP port %d\n", WiFi.localIP().toString().c_str(), localUdpPort); 
 + 
 +  pixels.begin(); 
 +  pixels.show(); 
 +} 
 + 
 +void loop() 
 +{ 
 +  int red      = 0; 
 +  int green    = 0; 
 +  int blue     = 0; 
 +  int refresh  = 0; 
 +  int scroll   = 0; 
 +  int pixel    = 0; 
 +  int all      = 0; 
 +  int clearall = 0; 
 +   
 +  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; 
 +//      Serial.printf("UDP packet contents: %s", incomingPacket); 
 +      StaticJsonBuffer<200> jsonBuffer; 
 +      JsonObject& json = jsonBuffer.parseObject(incomingPacket); 
 +      if (!json.success()) 
 +      { 
 +        Serial.println("parseObject() failed"); 
 +      } else { 
 +//        for (JsonObject::iterator it=json.begin(); it!=json.end(); ++it) 
 +//        { 
 +//          Serial.println(it->key); 
 +//          Serial.println(it->value.asString()); 
 +//        } 
 +        red      = json["red"]; 
 +        green    = json["green"]; 
 +        blue     = json["blue"]; 
 +        refresh  = json["refresh"]; 
 +        pixel    = json["pixel"]; 
 +        all      = json["all"]; 
 +        clearall = json["clearall"]; 
 +        scroll   = json["scroll"];  
 +      } 
 +    } 
 + 
 +    // send back a reply, to the IP address and port we got the packet from 
 +//    Serial.println("send UDP response"); 
 +//    Udp.beginPacket(Udp.remoteIP(), Udp.remotePort()); 
 +//    Udp.write(replyPacekt); 
 +//    Udp.endPacket(); 
 +  } 
 + 
 +  // new refreshrate received 
 +  if (refresh > 0) { 
 +    Serial.println("new refresh rate received"); 
 +    displayrefresh = refresh; 
 +  } 
 + 
 +  // change of scroll parameter 
 +  if (scroll > 0) { 
 +    Serial.printf("change scroll: %i", scroll); 
 +    if (scroll == 1) { 
 +      shiftpixels = 1; 
 +    } else { 
 +      shiftpixels = 2; 
 +    } 
 +  } 
 + 
 +  // set all pixel to color 
 +  if(all == 1) { 
 +    Serial.printf("set all pixels -> red: %i, green: %i, blue: %i", red, green, blue); 
 +    for(int i=0; i<NUMPIXELS; i++) { 
 +      pixels.setPixelColor(i, pixels.Color(red,green,blue)); 
 +    } 
 +  } 
 + 
 +  // set all pixel to black if clearall was set to 1 
 +  if(clearall == 1) { 
 +    Serial.println("clear all received"); 
 +    for(int i=0; i<NUMPIXELS; i++) { 
 +      pixels.setPixelColor(i, pixels.Color(0,0,0)); 
 +    } 
 +  } 
 + 
 +  //shift pixels  
 +  if (shiftpixels == 2) { 
 +//    Serial.println("shift pixels"); 
 +    for(int i=NUMPIXELS; i>=0; i--) { 
 +      uint32_t color = pixels.getPixelColor(i); 
 +      pixels.setPixelColor(i+1, color); 
 +    } 
 +  } 
 + 
 +  // set color of Pixel 
 +  // new color proviced color changed? 
 +  if (red >0 || green >0 || blue >0) { 
 +    //read current color 
 +    uint32_t CurrentColor = pixels.getPixelColor(1); 
 +    uint8_t  CurrentRed   = CurrentColor >> 16; 
 +    uint8_t  CurrentGreen = CurrentColor >> 8; 
 +    uint8_t  CurrentBlue  = CurrentColor; 
 + 
 +    // if no new color was set -> reuse the old color 
 +    if (red   == 0) {red  = CurrentRed;} 
 +    if (green == 0) {green = CurrentGreen;} 
 +    if (blue  == 0) {blue  = CurrentBlue;} 
 + 
 +    // set pixel 0 in case no spesific pixel was requested 
 +    if (pixel == 0) { 
 +//      Serial.printf("New color LED 0 -> red: %i, green: %i, blue: %i \n", red, green, blue); 
 +      pixels.setPixelColor(0, pixels.Color(red,green,blue)); 
 +    } else { 
 +      // if spesific pixel was request change the color and also copy pixel 1 to pixel 0 
 +//      Serial.printf("New color LED %i -> red: %i, green: %i, blue: %i \n", pixel, red, green, blue); 
 +      pixels.setPixelColor(pixel, pixels.Color(red,green,blue)); 
 +      if (shiftpixels == 2) { 
 +        uint32_t color = pixels.getPixelColor(1); 
 +        pixels.setPixelColor(0, color); 
 +      } 
 +    } 
 +  } else { 
 +//    Serial.printf("no new color"); 
 +    if (shiftpixels == 2) { 
 +      uint32_t color = pixels.getPixelColor(1); 
 +      pixels.setPixelColor(0, color); 
 +    } 
 +  } 
 + 
 +  pixels.show();  
 + 
 +  delay(displayrefresh); 
 +}
 </code> </code>
  
Line 67: Line 253:
 http://esp8266.github.io/Arduino/versions/2.0.0/doc/ota_updates/ota_updates.html http://esp8266.github.io/Arduino/versions/2.0.0/doc/ota_updates/ota_updates.html
  
-===== Test =====+===== LED Test =====
 <code> <code>
 #!/bin/bash #!/bin/bash
 IP=192.168.x.x IP=192.168.x.x
 PORT=2342 PORT=2342
-for i in 16 48 96 256 128 64 32 16 1 +SLEEP=0.1 
-do + 
-   echo led intensity: $i +while : ; do 
-   echo "{red:$i,green:1,blue:1}"   | nc -w 0 -u $IP $PORT ; sleep 1 +for i in $(seq 32 -4 0); do 
-   echo "{red:1,green:$i,blue:1}"   | nc -w 0 -u $IP $PORT ; sleep 1 +     echo Led intensity: $i 
-   echo "{red:1,green:1,blue:$i}"   | nc -w 0 -u $IP $PORT ; sleep 1 +     echo "{red:$i,green:0,blue:0}" | nc -w 0 -u $IP $PORT ; sleep $SLEEP 
-   echo "{red:$i,green:$i,blue:$i}" | nc -w 0 -u $IP $PORT ; sleep 1+  done 
 +  sleep 1 
 +for i in $(seq 32 -4 0); do 
 +     echo Led intensity: $i 
 +     echo "{red:0,green:$i,blue:0}" | nc -w 0 -u $IP $PORT ; sleep $SLEEP 
 +  done 
 +  sleep 1 
 +for i in $(seq 32 -4 0); do 
 +     echo Led intensity: $i 
 +     echo "{red:0,green:0,blue:$i}" | nc -w 0 -u $IP $PORT ; sleep $SLEEP 
 +  done 
 +  sleep 1
 done done
 </code> </code>
  
-===== SNMP Example ======+===== snmp2neopixel.sh ======
 <code> <code>
-Todo+#!/bin/bash 
 + 
 +GATEWAYIP=192.168.x.1    #Your gateway 
 +SNMPCOMMUNITY=public     #snmp read community string 
 +INTNUMBER=1              #Interface number in SNMP; snmpwalk -v2c -c readcommstring <IP> | grep IF-MIB::ifName 
 +MESASURETIME=1           #Time in seconds between messurment 
 +INBOUNDBANDWIDTH=300000  #Max Interface bandwidth 
 +OUTBOUNDBANDWIDTH=100000 #Max Interface bandwidth 
 +MAXBRIGHTNESS=32         #NeoPixel brightness (max value = 255) 
 +NEOPIXELIP=192.168.x.10  #IP of your ESP8266 
 +NEOPIXELPORT=2342        #UDP port of your ESP8266 
 + 
 +while true; do 
 +  TIME=$(date +%s) 
 +  OUT=$(snmpget -v2c -c $SNMPCOMMUNITY $GATEWAYIP ifOutOctets.$INTNUMBER | awk '{print $4}') 
 +  IN=$(snmpget -v2c -c $SNMPCOMMUNITY $GATEWAYIP ifInOctets.$INTNUMBER | awk '{print $4}') 
 + 
 +  if [ -z "$OUT" ] || [ -z "$IN" ]; then 
 +     msg="Unable to retrieve SNMP info." 
 +     exit 2 
 +  else 
 +     sleep $MESASURETIME 
 +     TIME2=$(date +%s) 
 +     OUT2=$(snmpget -v2c -c $SNMPCOMMUNITY $GATEWAYIP ifOutOctets.$INTNUMBER | awk '{print $4}') 
 +     IN2=$(snmpget -v2c -c $SNMPCOMMUNITY $GATEWAYIP ifInOctets.$INTNUMBER | awk '{print $4}') 
 + 
 +     if [ "$OUT2" -gt "$OUT" ] || [ "$IN2" -gt "$IN" ] ; then 
 +       if [ "$TIME2" == "$TIME" ]; then 
 +         TIME=1 
 +       fi 
 +       DELTAOUT=$(echo "$OUT2-$OUT" | bc) 
 +       DELTAIN=$(echo "$IN2-$IN" | bc) 
 +       DELTATIME=$(echo "$TIME2-$TIME" | bc) 
 +       INPUTBW=$(echo "$DELTAIN/$DELTATIME/1024" | bc) 
 +       OUTPUTBW=$(echo "$DELTAOUT/$DELTATIME/1024" | bc) 
 +       echo Inbound: $INPUTBW"KB/s" 
 +       echo Outbound: $OUTPUTBW"KB/s" 
 +       INPUTPERCENT=$(echo "$DELTAIN*8/$DELTATIME/$INBOUNDBANDWIDTH" | bc) 
 +       OUTPUTPERCENT=$(echo "$DELTAOUT*8/$DELTATIME/$OUTBOUNDBANDWIDTH" | bc) 
 +       echo Inbound %: $INPUTPERCENT"%" 
 +       echo Outbound %: $OUTPUTPERCENT"%" 
 +       RED=$(echo "($MAXBRIGHTNESS*$OUTPUTPERCENT/100)+1" | bc) 
 +       GREEN=$(echo "($MAXBRIGHTNESS*$INPUTPERCENT/100)+1" | bc) 
 +       echo "{red:$RED,green:$GREEN}" 
 +       echo "{red:$RED,green:$GREEN}" | nc -w 0 -u $NEOPIXELIP $NEOPIXELPORT 
 +     else 
 +      echo "no change" 
 +    fi 
 +  fi 
 +done 
 </code> </code>
  
projects/neopixel-bandwidth-room-light.txt · Last modified: 2017-12-23 11:49 by trinitor

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