From ccd00ce520b8aecf46bf1efd840488126d28ce31 Mon Sep 17 00:00:00 2001
From: Johannes Findeisen <you@hanez.org>
Date: Thu, 24 Sep 2015 01:40:51 +0200
Subject: [PATCH] added PF575_I2C_8LED_LM35/PF575_I2C_8LED_LM35

---
 PF575_I2C_8LED_LM35/PF575_I2C_8LED_LM35.ino | 69 +++++++++++++++++++++
 1 file changed, 69 insertions(+)
 create mode 100644 PF575_I2C_8LED_LM35/PF575_I2C_8LED_LM35.ino

diff --git a/PF575_I2C_8LED_LM35/PF575_I2C_8LED_LM35.ino b/PF575_I2C_8LED_LM35/PF575_I2C_8LED_LM35.ino
new file mode 100644
index 0000000..b92bf04
--- /dev/null
+++ b/PF575_I2C_8LED_LM35/PF575_I2C_8LED_LM35.ino
@@ -0,0 +1,69 @@
+#include <Wire.h>
+
+// Set I2C address
+int address = 0x20;
+
+int samples = 2;
+int collectDelay = 1000;
+int ledPin = 13;
+int tempPin = 0;
+
+float tempC = 0;
+
+void setup() {
+  pinMode(ledPin, OUTPUT);
+  Wire.begin();
+  pf575_write(word(B11111111,B11111111));
+  delay(200);
+  pf575_write(word(B00000000,B11111111));
+  delay(200);
+  pf575_write(word(B11111111,B11111111));
+  delay(200);
+  pf575_write(word(B00000000,B11111111));
+  delay(200);
+  pf575_write(word(B11111111,B11111111));
+  delay(1000);
+} 
+
+void loop() {
+  tempC = 0;
+  for(int i = 0; i <= (samples - 1); i++) {
+    tempC = tempC + ((5.0 * analogRead(tempPin) * 100.0) / 1024.0);
+    digitalWrite(ledPin, HIGH);
+    delay((collectDelay / 2));
+    digitalWrite(ledPin, LOW);
+    delay((collectDelay / 2));
+  }
+  tempC = tempC / (float)samples;
+  if(tempC > 21) {
+    pf575_write(word(B11111110,B11111111));
+  }
+  if(tempC > 23) {
+    pf575_write(word(B11111100,B11111111));
+  }
+  if(tempC > 25) {
+    pf575_write(word(B11111000,B11111111));
+  }
+  if(tempC > 27) {
+    pf575_write(word(B11110000,B11111111));
+  }
+  if(tempC > 29) {
+    pf575_write(word(B11100000,B11111111));
+  }
+  if(tempC > 31) {
+    pf575_write(word(B11000000,B11111111));
+  }
+  if(tempC > 33) {
+    pf575_write(word(B10000000,B11111111));
+  }
+  if(tempC > 35) {
+    pf575_write(word(B00000000,B11111111));
+  }
+} 
+
+void pf575_write(uint16_t data) {
+  Wire.beginTransmission(address);
+  Wire.write(highByte(data));
+  Wire.write(lowByte(data));
+  Wire.endTransmission();
+}