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-attiny.h  |  3 +++
 tk-voltage.h | 14 ++++++++++++++
 2 files changed, 17 insertions(+)

diff --git a/tk-attiny.h b/tk-attiny.h
index 4fee640..6390416 100644
--- a/tk-attiny.h
+++ b/tk-attiny.h
@@ -70,6 +70,9 @@
 #define ADC_DIDR    ADC1D   // Digital input disable bit corresponding with PB2
 #define ADC_PRSCL   0x06    // clk/64
 
+//#define TEMP_DIDR   ADC4D
+#define TEMP_CHANNEL 0b00001111
+
 #endif  // FET_7135_LAYOUT
 
 #ifdef FERRERO_ROCHER_LAYOUT
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
-- 
cgit v1.2.3


From 2e98cc7eed993f6d65ca5d57f358ffc8cb86c21c Mon Sep 17 00:00:00 2001
From: Selene ToyKeeper
Date: Mon, 12 Oct 2015 22:22:28 -0600
Subject: Oops, forgot to add tk-random header.

---
 tk-random.h | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 tk-random.h

diff --git a/tk-random.h b/tk-random.h
new file mode 100644
index 0000000..db6c939
--- /dev/null
+++ b/tk-random.h
@@ -0,0 +1,28 @@
+#ifndef TK_RANDOM_H
+#define TK_RANDOM_H
+/*
+ * Smaller, pseudo-random function(s).
+ *
+ * Copyright (C) 2015 Selene ToyKeeper
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+uint8_t pgm_rand() {
+    static uint8_t *offset = 0;
+    return pgm_read_byte(offset++);
+}
+
+#endif  // TK_RANDOM_H
-- 
cgit v1.2.3


From e9bfbbbe4d4853d127019260fafc2620b13f3a1f Mon Sep 17 00:00:00 2001
From: Selene ToyKeeper
Date: Mon, 12 Oct 2015 22:45:04 -0600
Subject: Made pgm_rand() more erratic (beginning of PROGMEM is boring for this
 purpose), made random strobe smaller and better-looking.

---
 tk-random.h | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/tk-random.h b/tk-random.h
index db6c939..d559659 100644
--- a/tk-random.h
+++ b/tk-random.h
@@ -21,8 +21,9 @@
  */
 
 uint8_t pgm_rand() {
-    static uint8_t *offset = 0;
-    return pgm_read_byte(offset++);
+    static uint16_t offset = 255;
+    offset = (offset + 1) & 0x3ff | 0x0100;
+    return pgm_read_byte(offset);
 }
 
 #endif  // TK_RANDOM_H
-- 
cgit v1.2.3


From b26ab711ec9c8da79575a26ace75f73109d3afb7 Mon Sep 17 00:00:00 2001
From: Selene ToyKeeper
Date: Sun, 18 Oct 2015 16:42:17 -0600
Subject: Removed the need to specify header file paths. Makes it easier to put
 all the files into one dir for building outside the repository.

---
 bin/build-25.sh | 2 +-
 bin/build.sh    | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/bin/build-25.sh b/bin/build-25.sh
index 9a3de00..618b94a 100755
--- a/bin/build-25.sh
+++ b/bin/build-25.sh
@@ -8,7 +8,7 @@ export ATTINY=25
 export MCU=attiny$ATTINY
 export CC=avr-gcc
 export OBJCOPY=avr-objcopy
-export CFLAGS="-Wall -g -Os -mmcu=$MCU -c -std=gnu99 -DATTINY=$ATTINY"
+export CFLAGS="-Wall -g -Os -mmcu=$MCU -c -std=gnu99 -DATTINY=$ATTINY -I.."
 export OFLAGS="-Wall -g -Os -mmcu=$MCU"
 export LDFLAGS=
 export OBJCOPYFLAGS='--set-section-flags=.eeprom=alloc,load --change-section-lma .eeprom=0 --no-change-warnings -O ihex'
diff --git a/bin/build.sh b/bin/build.sh
index 935310a..0d53b57 100755
--- a/bin/build.sh
+++ b/bin/build.sh
@@ -8,7 +8,7 @@ export ATTINY=13
 export MCU=attiny$ATTINY
 export CC=avr-gcc
 export OBJCOPY=avr-objcopy
-export CFLAGS="-Wall -g -Os -mmcu=$MCU -c -std=gnu99 -DATTINY=$ATTINY"
+export CFLAGS="-Wall -g -Os -mmcu=$MCU -c -std=gnu99 -DATTINY=$ATTINY -I.."
 export OFLAGS="-Wall -g -Os -mmcu=$MCU"
 export LDFLAGS=
 export OBJCOPYFLAGS='--set-section-flags=.eeprom=alloc,load --change-section-lma .eeprom=0 --no-change-warnings -O ihex'
-- 
cgit v1.2.3