#include <stdlib.h>
#include "picinit.h"
#include "unused.h"
+#include "lfsr.h"
#include "btn.h"
#include "rgb.h"
#include "tmr.h"
#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 */
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_ADDR = 0, /* EEPROM address of start of configuration */
CFG_DELAY = 92, /* 3 seconds in 32.768 msec units */
};
unsigned char mode = MODE_SOLID;
unsigned char color = COLOR_WHITE;
+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;
+void cfg_write()
+{
+ unsigned char 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
*
/* 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;
void pb_held()
{
+ signed char obright = bright;
+
/* The button has been held. Change the color magnitude. */
if (bright_up) {
if (bright == BRIGHT_TOP)
else
bright--;
}
+ if (bright != obright)
+ tmr_start(TMR_CFG, CFG_DELAY);
leds_set();
}
if (mode == MODE_CYCLE)
tmr_start(TMR_INCOLOR, STD_INCOLOR);
else if (mode == MODE_PARTY)
- tmr_start(TMR_INCOLOR, PARTY_MIN + (rand() % PARTY_RANGE));
+ tmr_start(TMR_INCOLOR, PARTY_MIN + (lfsr_get() % PARTY_RANGE));
}
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();
}
auto_offon_task();
break;
case TASK_CFG: /* Save config to EEPROM event */
- cfg_write(mode, color);
+ cfg_write();
break;
}
}