From a83c3cfeb35ae6bd308cb0ce17af1e510de6e476 Mon Sep 17 00:00:00 2001
From: Selene ToyKeeper
Date: Sat, 10 Oct 2015 00:15:01 -0600
Subject: Made a simple program to blink out temperature measurements. Added
 some basic temperature stuff to header files.

---
 tk-voltage.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'tk-voltage.h')

diff --git a/tk-voltage.h b/tk-voltage.h
index 5eaf0d4..8421ef3 100644
--- a/tk-voltage.h
+++ b/tk-voltage.h
@@ -23,6 +23,20 @@
 #include "tk-attiny.h"
 #include "tk-calibration.h"
 
+#ifdef TEMPERATURE_MON
+inline void ADC_on_temperature() {
+    // TODO: (?) enable ADC Noise Reduction Mode, Section 17.7 on page 128
+    //       (apparently can only read while the CPU is in idle mode though)
+    // select ADC4 by writing 0b00001111 to ADMUX
+    // 1.1v reference, left-adjust, ADC4
+    ADMUX  = (1 << V_REF) | (1 << ADLAR) | TEMP_CHANNEL;
+    // disable digital input on ADC pin to reduce power consumption
+    //DIDR0 |= (1 << TEMP_DIDR);
+    // enable, start, prescale
+    ADCSRA = (1 << ADEN ) | (1 << ADSC ) | ADC_PRSCL;
+}
+#endif  // TEMPERATURE_MON
+
 #ifdef VOLTAGE_MON
 inline void ADC_on() {
     // disable digital input on ADC pin to reduce power consumption
-- 
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