http arduino

1 files changed, 92 insertions, 0 deletions

diff --git a/arduino/arduinoAnalogHTTP/analogethernet.ino b/arduino/arduinoAnalogHTTP/analogethernet.ino
new file mode 100755
index 0000000..9095eeb
--- /dev/null
+++ b/arduino/arduinoAnalogHTTP/analogethernet.ino
@@ -0,0 +1,92 @@
+// vim: filetype=cpp
+#include <SPI.h>
+#include <Ethernet.h>
+
+byte mac[] = {  0xAD, 0xEE, 0x00, 0xEF, 0xFE, 0xED };
+const int ledPin = 13;      // select the pin for the LED
+
+const long ADC_REF_MV = 3300;
+const long ADC_MAX_STEP = 1024;
+const long OV_FACTOR = 4; // Op. Verstärker Faktor = 4; 10mV = 1dB
+
+EthernetClient client;
+
+void sendKeyValue(const char *key, const char *value) {
+    char hdrbuf[512];
+    snprintf(hdrbuf, 512, "Content-Length: %d\r\n", strlen(value));
+
+  if ( ! client.connect("10.1.0.1", 8080)) {
+    Serial.println("Failed to connect");
+    delay(500);
+    return;
+  }
+
+  client.write("PUT /api/value/");
+  client.write(key);
+  client.write(" HTTP/1.1\r\n");
+  client.write(hdrbuf);
+  client.write("\r\n");
+  client.write(value);
+
+  client.stop();
+}
+
+void sendPinValue() {
+  long sensorValue,
+      sensorValueMV, 
+      sensorValueDBA,
+      pinnr;
+  char buf[12];
+  char *sensorKey = "arduino.aX", 
+       *sensorKeyMV = "arduino.aX.mv",
+       *sensorKeyDBA = "arduino.aX.dba";
+  for (int i = A0; i <= A5; i++) {
+    pinnr = i - A0;
+    
+    sensorValue = analogRead(i);
+    sensorKey[9] = '0' + pinnr;
+    snprintf(buf, 8, "%u", sensorValue);
+    sendKeyValue(sensorKey, buf);
+    
+    sensorValueMV = sensorValue * (ADC_REF_MV*100/ADC_MAX_STEP);
+    sensorKeyMV[9] = '0' + pinnr;
+    snprintf(buf, 8, "%ld.%03ld", sensorValueMV/100, sensorValue%100);
+    sendKeyValue(sensorKeyMV, buf);
+    
+    sensorValueDBA = sensorValueMV / OV_FACTOR; 
+    sensorKeyDBA[9] = '0' + pinnr;
+    snprintf(buf, 12, "%ld.%04ld", sensorValueDBA/1000, sensorValueDBA%1000);
+    sendKeyValue(sensorKeyDBA, buf);
+  }
+}
+
+
+void setup() {
+  Serial.begin(9600);
+
+  // declare the ledPin as an OUTPUT:
+  pinMode(ledPin, OUTPUT);  
+  
+  // start the Ethernet and UDP: Use DHCP for IP-Configuration
+  Ethernet.begin(mac);
+  
+  analogReference(EXTERNAL);
+  delay(1000);
+}
+
+
+
+char buf[512];
+
+void loop() {
+  unsigned long dt = millis();
+  digitalWrite(ledPin, HIGH);
+
+  sendPinValue();
+
+  digitalWrite(ledPin, LOW);
+  
+  dt = (millis() - dt);
+  if (dt < 1000) delay(1000 - dt);
+}
+