From 310997529bad68e71c5c652ed91483041781387f Mon Sep 17 00:00:00 2001
From: Nicolae Hodos <nicu.hodos@gmail.com>
Date: Tue, 4 Apr 2017 19:36:05 +0200
Subject: [PATCH] add temperature sensor

---
 libraries/Tiny/TempSensor.h |  6 ++--
 temp_sensor/temp_sensor.ino | 69 +++++++++++++++++--------------------
 2 files changed, 33 insertions(+), 42 deletions(-)

diff --git a/libraries/Tiny/TempSensor.h b/libraries/Tiny/TempSensor.h
index 6cd78f7..45a4dbe 100644
--- a/libraries/Tiny/TempSensor.h
+++ b/libraries/Tiny/TempSensor.h
@@ -10,9 +10,7 @@ public:
 			TinySensor(id, senderPin) {
 	}
 
-	unsigned long sendTempAndVoltage(int temp) {
-		unsigned long value = ID(id) | VCC(readVcc()) | TEMP(temp) | TYPE(6);
-		sendInfo(value);
-		return value;
+	void sendTempAndVoltage(int temp) {
+		sendInfo(ID(id) | VCC(readVcc()) | TEMP(temp) | TYPE(6));
 	}
 };
diff --git a/temp_sensor/temp_sensor.ino b/temp_sensor/temp_sensor.ino
index 77a4659..86d7eb6 100644
--- a/temp_sensor/temp_sensor.ino
+++ b/temp_sensor/temp_sensor.ino
@@ -1,62 +1,55 @@
 #include "Arduino.h"
 #include <Tiny.h>
+#include <SoftwareSerial_Tiny.h>
+
+#define DEBUG 0
 
 // Pins
-#define SENDER 2
-#define TEMP_PIN 3
+#define SENDER 1
+#define TEMP_PIN A1
 
 #define SENSOR_ID 4
 
+#if DEBUG
+#define RxD 3
+#define TxD 4
+SoftwareSerial AttinySerial(RxD, TxD);
+#endif
+
 TempSensor sensor = TempSensor(SENSOR_ID, SENDER);
 
 int counter = 0;
 
 void setup() {
 
-	Serial.begin(9600);
-
+#if DEBUG
+	AttinySerial.begin(9600);
+#endif
 	sensor.setup();
-
-//  TinyPower::setup();
-//  TinyPower::enableWdt(WDTO_8S);
+	analogReference(INTERNAL);
 }
 
 void loop() {
-//  TinyPower::sleep();
-	unsigned long value = sensor.sendTempAndVoltage(readTemp());
-	Serial.println(value);
-	delay(5000);
+	sensor.sendTempAndVoltage(readTemp());
+	delay(60000L);
 }
 
 int readTemp() {
 	int reading = analogRead(TEMP_PIN);
+#if DEBUG
+	AttinySerial.println(reading);
+#endif
 
-	// converting that reading to voltage, for 3.3v arduino use 3.3
-	float voltage = reading * 5.0;
-	voltage /= 1024.0;
+	float voltage = reading * (1100 / 1024.0);
+#if DEBUG
+	AttinySerial.print(voltage);
+	AttinySerial.println(" mili volts");
+#endif
 
-	// print out the voltage
-	Serial.print(voltage);
-	Serial.println(" volts");
-
-	// now print out the temperature
-	float temperatureC = (voltage - 0.5) * 100; //converting from 10 mv per degree wit 500 mV offset
-												//to degrees ((voltage - 500mV) times 100)
-	Serial.print(temperatureC);
-	Serial.println(" degrees C");
-	return roundf(temperatureC*10);
-}
-
-ISR(PCINT0_vect) {
-	sensor.sendTempAndVoltage(readTemp());
-	delay(5000);
-	sensor.sendTempAndVoltage(readTemp());
-}
-
-ISR(WDT_vect) {
-	counter++;
-	if (counter % 220 == 0) {
-		counter = 0;
-		sensor.sendTempAndVoltage(readTemp());
-	}
+	float temperatureC = (voltage - 500) / 10;
+#if DEBUG
+	AttinySerial.print(temperatureC);
+	AttinySerial.println(" degrees C");
+#endif
+	return roundf(temperatureC * 10);
 }