+/*
+ * Copyright © 2011, 2012, Titanium Mirror, Inc..
+ * All Rights Reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * - Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * - Neither the name of Titanium Mirror, Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
+ * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
/*
* File: main.c
*
#include <stdlib.h>
#include "picinit.h"
#include "unused.h"
+#include "lfsr.h"
#include "btn.h"
#include "rgb.h"
#include "tmr.h"
#include "task.h"
#include "adc_random.h"
-//#define AUTO_OFF_COUNT 150 /* 5 mins on*/
-//#define AUTO_ON_COUNT 300 /* 10 mins off */
-//#define AUTO_OFF_COUNT 450 /* 15 mins on*/
-//#define AUTO_ON_COUNT 1350 /* 45 mins off */
-//#define AUTO_OFF_COUNT 600 /* 20 mins on*/
-//#define AUTO_ON_COUNT 1200 /* 40 mins off */
-//#define AUTO_OFF_COUNT 450 /* 2 hours on*/
-//#define AUTO_ON_COUNT 1350 /* 22 hours off */
#define AUTO_OFF_COUNT 9000U /* 5 hrs in 2 sec units */
#define AUTO_ON_COUNT 34200U /* 19 hrs in 2 sec units */
#define dbgpin_init() do { \
#define dbgpin_low() (RA2 = 0)
#define dbgpin_toggle() (RA2 = (LATA2 == 0) ? 1 : 0)
-#define cfg_write(mode, color) do { \
- eeprom_write(CFG_MODE_ADDR, (mode)); \
- eeprom_write(CFG_COLOR_ADDR, (color)); \
- } while (0)
-
-#define cfg_read(mode, color) do { \
- unsigned char tmp; \
- tmp = eeprom_read(CFG_MODE_ADDR); \
- mode = (tmp < MODE_COUNT) ? tmp : MODE_SOLID; \
- tmp = eeprom_read(CFG_COLOR_ADDR); \
- color = (tmp < COLOR_COUNT) ? tmp : 0; \
- } while (0)
-
enum {
/* Operating modes */
MODE_SOLID = 0, /* Cycle through colors[][] before next mode */
- //MODE_CANDLE,
MODE_CYCLE, /* Auto cycle through colors */
MODE_PARTY, /* Random yet fast incolor and fade */
MODE_COUNT,
HELD_TMR_PERIODS = 1, /* Held timer fires every 32.768 msec */
HELD_PERIODS = 16, /* Held this long before held events fire */
- COLOR_WHITE = 0, /* Color index for white */
- COLOR_COUNT = 11,
+ COLOR_COUNT = 12,
+ COLOR_CANDLE = 0, /* Color index for the candle color */
+ COLOR_WHITE = 11, /* Color index for white */
BRIGHT_TOP = 100, /* Bright ramps up to top ... */
BRIGHT_BOTTOM = -5, /* ... then down to bottom */
BRIGHT_MAX = 85, /* Bright values are constrained for computations */
BRIGHT_MIN = 1, /* ... by min and max. */
- BRIGHT_INIT = 42, /* later, get from eeprom */
+ BRIGHT_INIT = 42, /* Initial value is replaced by value from eeprom */
+ CBRIGHT_VARIANCE = 20, /* Brightness range for candle flicker */
STD_FADE = 16, /* Fade time in 32.768 ms units */
STD_INCOLOR = 29491, /* Time in color when MODE_CYCLE, in 32.768 ms units */
PARTY_MIN = 8, /* Min party fade and incolor units */
- PARTY_RANGE = 8, /* Party fade/incolor range mask for rand() */
+ PARTY_RANGE = 8, /* Party fade/incolor range mask for lfsr_get() */
/* ... see start_fade() */
- CFG_MODE_ADDR = 0, /* EEPROM address of mode variable */
- CFG_COLOR_ADDR, /* EEPROM address of color variable */
- CFG_DELAY = 92, /* 3 seconds in 32.768 msec units */
+ CFG_ADDR = 0, /* EEPROM address of start of configuration */
+ CFG_DELAY = 183, /* 6 seconds in 32.768 msec units */
};
typedef struct {
signed char remainder;
} led_t;
+/* Offsets to brightness used for candle color */
+const signed char offsets[4] = { -1, -1, 1, 1 };
+
/* Available colors, 6 bits per color (no values above 0x3f) */
const unsigned char colors[COLOR_COUNT][LED_COUNT] = {
+ { 0x2c, 0x20, 0x00, 0x18 }, /* candle */
{ 0x28, 0x00, 0x00, 0x00 }, /* red */
{ 0x30, 0x20, 0x00, 0x00 }, /* orange */
{ 0x2c, 0x2c, 0x00, 0x00 }, /* yellow */
};
unsigned char mode = MODE_SOLID;
-unsigned char color = COLOR_WHITE;
+unsigned char color = COLOR_CANDLE;
+signed char bright = BRIGHT_INIT;
+bit bright_up;
led_t red;
led_t grn;
led_t blu;
led_t wht;
bit on;
int fade_steps;
-signed char bright = BRIGHT_INIT;
-bit bright_up;
signed char pbHeldCount;
+signed char cbright;
+
+void cfg_write()
+{
+ unsigned char addr = CFG_ADDR;
+ unsigned char m, c;
+ signed char b;
+
+ m = eeprom_read(addr++);
+ c = eeprom_read(addr++);
+ b = eeprom_read(addr);
+ if (mode != m || color != c || bright != b) {
+ addr = CFG_ADDR;
+ eeprom_write(addr++, mode);
+ eeprom_write(addr++, color);
+ eeprom_write(addr, bright);
+ }
+}
+
+void cfg_read()
+{
+ unsigned char addr = CFG_ADDR;
+ unsigned char tmp;
+
+ tmp = eeprom_read(addr++);
+ if (tmp < MODE_COUNT)
+ mode = tmp;
+
+ tmp = eeprom_read(addr++);
+ if (tmp < COLOR_COUNT)
+ color = tmp;
+
+ tmp = eeprom_read(addr);
+ if ((signed char)tmp >= BRIGHT_BOTTOM && (signed char)tmp <= BRIGHT_TOP)
+ bright = tmp;
+}
/* Combine LED color value and brightness level to generate an RGB value.
* bright will be BRIGHT_MIN...BRIGHT_MAX
{
signed char b;
- if (bright > BRIGHT_MAX)
- b = BRIGHT_MAX;
- else if (bright < BRIGHT_MIN)
- b = BRIGHT_MIN;
+ /* Use correct brightness value, then constrain it */
+ if (mode != MODE_PARTY && color != COLOR_WHITE)
+ b = cbright;
else
b = bright;
+ if (b > BRIGHT_MAX)
+ b = BRIGHT_MAX;
+ else if (b < BRIGHT_MIN)
+ b = BRIGHT_MIN;
+
rgb_set(led_get((red).value, b), led_get((grn).value, b),
led_get((blu).value, b), led_get((wht).value, b));
}
/* Select the destination color and fade-to time depending upon mode. */
fade_steps = STD_FADE;
if (mode == MODE_PARTY) {
- color = rand() % COLOR_COUNT;
- fade_steps = PARTY_MIN + (rand() % PARTY_RANGE);
+ color = lfsr_get() % COLOR_COUNT;
+ fade_steps = PARTY_MIN + (lfsr_get() % PARTY_RANGE);
} else if (mode == MODE_CYCLE) {
if (++color == COLOR_COUNT)
color = 0;
wht.remainder = neww - (wht.value + wht.increment * fade_steps);
/* Start the fade timer */
+ tmr_stop(TMR_CANDLE);
tmr_stop(TMR_INCOLOR);
tmr_startPeriodic(TMR_FADE, 1); /* 32.768 msec */
}
btn_pben();
}
+/* Event on to off, either by switch or auto-off timer */
void turnOff()
{
- /* Event on to off, either by switch or auto-off timer */
tmr_stop(TMR_CFG);
+ tmr_stop(TMR_CANDLE);
tmr_stop(TMR_INCOLOR);
tmr_stop(TMR_FADE);
rgb_off();
void pb_clicked()
{
if (on) {
- unsigned char omode = mode;
-
if (mode == MODE_SOLID) {
if (++color == COLOR_COUNT) {
color = 0;
mode = 0;
color = 0;
}
- if (mode != omode || mode == MODE_SOLID)
- tmr_start(TMR_CFG, CFG_DELAY);
+ tmr_start(TMR_CFG, CFG_DELAY);
start_fade();
}
}
+/* The button is being held. Change the color magnitude. */
void pb_held()
{
- /* The button has been held. Change the color magnitude. */
if (bright_up) {
if (bright == BRIGHT_TOP)
bright_up = 0;
else
bright--;
}
+ tmr_start(TMR_CFG, CFG_DELAY);
leds_set();
}
}
}
+void candle_task()
+{
+ /* Flicker by using the brightness value */
+ cbright += offsets[lfsr_get() & 0x03];
+
+ /* Constraight cbright to a range about bright */
+ if (cbright > bright)
+ cbright = bright;
+ else if (cbright < bright - CBRIGHT_VARIANCE)
+ cbright = bright - CBRIGHT_VARIANCE;
+
+ /* Adjust the LEDs */
+ leds_set();
+}
+
void fade_task()
{
red.value += red.increment;
grn.value += grn.remainder;
blu.value += blu.remainder;
wht.value += wht.remainder;
+ tmr_stop(TMR_CANDLE);
tmr_stop(TMR_FADE);
- if (mode == MODE_CYCLE)
- tmr_start(TMR_INCOLOR, STD_INCOLOR);
- else if (mode == MODE_PARTY)
- tmr_start(TMR_INCOLOR, PARTY_MIN + (rand() % PARTY_RANGE));
+ if (mode == MODE_PARTY)
+ tmr_start(TMR_INCOLOR, PARTY_MIN + (lfsr_get() % PARTY_RANGE));
+ else {
+ if (mode == MODE_CYCLE)
+ tmr_start(TMR_INCOLOR, STD_INCOLOR);
+ if (color != COLOR_WHITE) {
+ cbright = bright - CBRIGHT_VARIANCE / 2;
+ tmr_startPeriodic(TMR_CANDLE, 1);
+ }
+ }
}
leds_set();
}
void user_boot()
{
dbgpin_high();
- srand((adc_random() << 8) + adc_random());
- cfg_read(mode, color);
+ lfsr_init((adc_random() << 8) + adc_random());
+ cfg_read();
rs_task();
}
while ((tid = task_get(block)) >= 0) {
switch (tid) {
- case TASK_BTN_PB: /* pushbutton state change */
+ case TASK_BTN_PB:
pb_task();
break;
- case TASK_BTN_RS: /* rocker switch state change */
+ case TASK_BTN_RS:
rs_task();
break;
- case TASK_BTN_PB_HELD: /* pushbutton is being held down */
+ case TASK_BTN_PB_HELD:
pb_held_task();
break;
- case TASK_FADE: /* fade timer has fired */
+ case TASK_FADE:
fade_task();
break;
- case TASK_INCOLOR: /* in-color timer has fired */
+ case TASK_INCOLOR:
start_fade();
break;
- case TASK_TMR32: /* auto on/off event */
+ case TASK_CANDLE:
+ candle_task();
+ break;
+ case TASK_TMR32:
auto_offon_task();
break;
- case TASK_CFG: /* Save config to EEPROM event */
- cfg_write(mode, color);
+ case TASK_CFG:
+ cfg_write();
break;
}
}
projects / rgblamp.git / blobdiff