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-rw-r--r--spaghetti-monster/anduril/anduril.c36
-rw-r--r--spaghetti-monster/anduril/anduril.txt3
-rw-r--r--spaghetti-monster/fsm-adc.c5
-rw-r--r--spaghetti-monster/fsm-random.c33
-rw-r--r--spaghetti-monster/fsm-random.h29
-rw-r--r--spaghetti-monster/spaghetti-monster.h2
6 files changed, 81 insertions, 27 deletions
diff --git a/spaghetti-monster/anduril/anduril.c b/spaghetti-monster/anduril/anduril.c
index ca8a138..2ee18e8 100644
--- a/spaghetti-monster/anduril/anduril.c
+++ b/spaghetti-monster/anduril/anduril.c
@@ -253,11 +253,6 @@ volatile uint8_t strobe_type = 4;
// bike mode config options
volatile uint8_t bike_flasher_brightness = MAX_1x7135;
-#ifdef USE_PSEUDO_RAND
-volatile uint8_t pseudo_rand_seed = 0;
-uint8_t pseudo_rand();
-#endif
-
#ifdef USE_CANDLE_MODE
uint8_t triangle_wave(uint8_t phase);
#endif
@@ -821,16 +816,16 @@ uint8_t strobe_state(EventPtr event, uint16_t arg) {
set_level(brightness);
// wave1: slow random LFO
- if ((arg & 1) == 0) candle_wave1 += pseudo_rand()&1;
+ if ((arg & 1) == 0) candle_wave1 += pseudo_rand() & 1;
// wave2: medium-speed erratic LFO
candle_wave2 += candle_wave2_speed;
// wave3: erratic fast wave
- candle_wave3 += pseudo_rand()%37;
+ candle_wave3 += pseudo_rand() % 37;
// S&H on wave2 frequency to make it more erratic
- if ((pseudo_rand()>>2) == 0)
- candle_wave2_speed = pseudo_rand()%13;
+ if ((pseudo_rand() & 0b00111111) == 0)
+ candle_wave2_speed = pseudo_rand() % 13;
// downward sawtooth on wave2 depth to simulate stabilizing
- if ((candle_wave2_depth > 0) && ((pseudo_rand()>>2) == 0))
+ if ((candle_wave2_depth > 0) && ((pseudo_rand() & 0b00111111) == 0))
candle_wave2_depth --;
// random sawtooth retrigger
if ((pseudo_rand()) == 0) {
@@ -839,9 +834,9 @@ uint8_t strobe_state(EventPtr event, uint16_t arg) {
candle_wave2 = 0;
}
// downward sawtooth on wave3 depth to simulate stabilizing
- if ((candle_wave3_depth > 2) && ((pseudo_rand()>>3) == 0))
+ if ((candle_wave3_depth > 2) && ((pseudo_rand() & 0b00011111) == 0))
candle_wave3_depth --;
- if ((pseudo_rand()>>1) == 0)
+ if ((pseudo_rand() & 0b01111111) == 0)
candle_wave3_depth = 5;
}
#endif
@@ -1475,17 +1470,6 @@ void indicator_blink(uint8_t arg) {
#endif
-#ifdef USE_PSEUDO_RAND
-uint8_t pseudo_rand() {
- static uint16_t offset = 1024;
- // loop from 1024 to 4095
- offset = ((offset + 1) & 0x0fff) | 0x0400;
- pseudo_rand_seed += 0b01010101; // 85
- return pgm_read_byte(offset) + pseudo_rand_seed;
-}
-#endif
-
-
#ifdef USE_CANDLE_MODE
uint8_t triangle_wave(uint8_t phase) {
uint8_t result = phase << 1;
@@ -1688,7 +1672,7 @@ void loop() {
//rand_time = 1 << (pseudo_rand() % 7);
rand_time = pseudo_rand() & 63;
brightness = 1 << (pseudo_rand() % 7); // 1, 2, 4, 8, 16, 32, 64
- brightness += 1 << (pseudo_rand()&0x03); // 2 to 80 now
+ brightness += 1 << (pseudo_rand() & 0x03); // 2 to 80 now
brightness += pseudo_rand() % brightness; // 2 to 159 now (w/ low bias)
if (brightness > MAX_LEVEL) brightness = MAX_LEVEL;
set_level(brightness);
@@ -1717,8 +1701,8 @@ void loop() {
// turn the emitter off,
// for a random amount of time between 1ms and 8192ms
// (with a low bias)
- rand_time = 1<<(pseudo_rand()%13);
- rand_time += pseudo_rand()%rand_time;
+ rand_time = 1 << (pseudo_rand() % 13);
+ rand_time += pseudo_rand() % rand_time;
set_level(0);
nice_delay_ms(rand_time);
diff --git a/spaghetti-monster/anduril/anduril.txt b/spaghetti-monster/anduril/anduril.txt
index e74ce87..9cbef68 100644
--- a/spaghetti-monster/anduril/anduril.txt
+++ b/spaghetti-monster/anduril/anduril.txt
@@ -161,6 +161,7 @@ TODO:
* refactor to make config modes smaller
* move all config menus to four clicks
* candle mode timer, with three clicks to add 30 minutes
- - diagram updates for 3-click special actions
+ * diagram updates for 3-click special actions
- candle mode: smoother adjustments?
- make sunset mode timer and brightness configurable?
+ - make beacon mode actually sleep between pulses
diff --git a/spaghetti-monster/fsm-adc.c b/spaghetti-monster/fsm-adc.c
index 6e9f19b..2ec630c 100644
--- a/spaghetti-monster/fsm-adc.c
+++ b/spaghetti-monster/fsm-adc.c
@@ -109,6 +109,11 @@ ISR(ADC_vect) {
uint16_t measurement = ADC; // latest 10-bit ADC reading
+ #ifdef USE_PSEUDO_RAND
+ // real-world entropy makes this a true random, not pseudo
+ pseudo_rand_seed += measurement;
+ #endif
+
adc_step = (adc_step + 1) & (ADC_STEPS-1);
#ifdef USE_LVP
diff --git a/spaghetti-monster/fsm-random.c b/spaghetti-monster/fsm-random.c
new file mode 100644
index 0000000..1f83bce
--- /dev/null
+++ b/spaghetti-monster/fsm-random.c
@@ -0,0 +1,33 @@
+/*
+ * fsm-random.c: Random number generator for SpaghettiMonster.
+ *
+ * Copyright (C) 2017 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/>.
+ */
+
+#ifndef FSM_RANDOM_C
+#define FSM_RANDOM_C
+
+#ifdef USE_PSEUDO_RAND
+uint8_t pseudo_rand() {
+ static uint16_t offset = 1024;
+ // loop from 1024 to 4095
+ offset = ((offset + 1) & 0x0fff) | 0x0400;
+ pseudo_rand_seed += 0b01010101; // 85
+ return pgm_read_byte(offset) + pseudo_rand_seed;
+}
+#endif
+
+#endif
diff --git a/spaghetti-monster/fsm-random.h b/spaghetti-monster/fsm-random.h
new file mode 100644
index 0000000..720f6f2
--- /dev/null
+++ b/spaghetti-monster/fsm-random.h
@@ -0,0 +1,29 @@
+/*
+ * fsm-random.h: Random number generator for SpaghettiMonster.
+ *
+ * Copyright (C) 2017 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/>.
+ */
+
+#ifndef FSM_RANDOM_H
+#define FSM_RANDOM_H
+
+#ifdef USE_PSEUDO_RAND
+uint8_t pseudo_rand();
+// TODO: test without "volatile", in case it's not needed
+volatile uint8_t pseudo_rand_seed = 0;
+#endif
+
+#endif
diff --git a/spaghetti-monster/spaghetti-monster.h b/spaghetti-monster/spaghetti-monster.h
index 5599bca..08690b4 100644
--- a/spaghetti-monster/spaghetti-monster.h
+++ b/spaghetti-monster/spaghetti-monster.h
@@ -34,6 +34,7 @@
#include "fsm-pcint.h"
#include "fsm-standby.h"
#include "fsm-ramping.h"
+#include "fsm-random.h"
#ifdef USE_EEPROM
#include "fsm-eeprom.h"
#endif
@@ -71,6 +72,7 @@ void loop();
#include "fsm-pcint.c"
#include "fsm-standby.c"
#include "fsm-ramping.c"
+#include "fsm-random.c"
#ifdef USE_EEPROM
#include "fsm-eeprom.c"
#endif
generated by cgit v1.2.3 (git 2.25.1) at 2026-03-28 15:18:59 +0000