Uses tmr, runs if already on, stops, will not wake

[rgblamp.git] / main.c

diff --git a/main.c b/main.c
index ec3d4257dfc10595522972e879e35f2ca4c7656d..65cff5565ab684b1d875cdc5e0667a5c10dab461 100644 (file)
--- a/main.c
+++ b/main.c
@@ -15,8 +15,8 @@
  * - ( 9) RB3 - CCP1 PWM for red LED
  * - (10) RB4 - rocker switch position B (right)
  * - (11) RB5 - rocker switch position A (left)
- * - (12) RB6 - unused
- * - (13) RB7 - unused
+ * - (12) RB6 - unused (future crystal)
+ * - (13) RB7 - unused (future crystal)
  * - (14) Vdd
  * - (15) RA6 - unused
  * - (16) RA7 - CCP2 PWM for grn LED
@@ -25,18 +25,24 @@
  *
  */
 
-#define RUNAT32MHZ /* else 16 MHz */
-
 #include <htc.h>
 #include <stdlib.h>
 #include "picinit.h"
+#include "unused.h"
 #include "buttons.h"
 #include "rgb.h"
-#include "unused.h"
+#include "tmr.h"
+#include "adc_random.h"
 
-#define STEP_SIZE               32 /* ms */
+#if 0
+#define AUTO_OFF_COUNT          549316UL  /*  5 hrs in 32.768 ms units */
+#define AUTO_ON_COUNT           2087402UL /* 19 hrs in 32.768 ms units */
+#else
+#define AUTO_OFF_COUNT          1831 /* 1 minute in 32.768 ms units */
+#define AUTO_ON_COUNT           3662 /* 2 minutes in 32.768 ms units */
+#endif
 #define reset_steps()           do { incolor_steps = 1; fade_steps = 0; } \
-                                  while (0)
+                                    while (0)
 #define rand_u8()               (rand() & 0xff)
 #define rand_u16()              ((rand() << 8) + rand_u8())
 #define rand_incolor_steps(s)   (min_incolor_steps[s & 3] + \
@@ -44,14 +50,22 @@
 #define rand_fade_steps(s)      (min_fade_steps[s & 3] + \
                                     (rand() % range_fade_steps[s & 3]))
 #define leds_set(r,g,b,w)       rgb_set((r).value >> 7, \
-                                  (g).value >> 7, \
-                                  (b).value >> 7, \
-                                  (w).value >> 7)
+                                    (g).value >> 7, \
+                                    (b).value >> 7, \
+                                    0)
+#define dbgpin_init()           do { \
+                                    /* Set RA2 as output low */ \
+                                    RA2 = 0; \
+                                    TRISA2 = 0; \
+                                } while (0)
+#define dbgpin_high() (RA2 = 1)
+#define dbgpin_low()  (RA2 = 0)
+#define dbgpin_toggle()  (RA2 = (LATA2 == 0) ? 1 : 0)
 
 typedef struct {
   int value;
   int increment;
-  char remainder;
+  signed char remainder;
 } led_t;
 #define INIT_LED { 0, 0, 0 }
 
@@ -77,24 +91,49 @@ int main(void)
     unsigned char speed = 0;
     unsigned incolor_steps;
     int fade_steps;
+    unsigned long auto_off = 0;
 
     pic_init();
     unused_init();
     buttons_init();
     rgb_init();
+    tmr_init();
+    dbgpin_init();
 
+    srand((adc_random() << 8) + adc_random());
     reset_steps();
     if (buttons_on())
       rgb_on();
 
+    dbgpin_high();
+    tmr_startPeriodic(TMR_FADE, 1);  /* 32.768 msec */
     while (1) {
         unsigned char buttons = buttons_read();
 
-        if ((buttons & (IN_ROCKERA | IN_ROCKERB))) {
+        if ((buttons & IN_ROCKERB) && auto_off == 0)
+            tmr_startPeriodic(TMR_AUTO_OFFON, AUTO_OFF_COUNT);
+
+        if ((buttons & IN_ROCKERB) && tmr_fired(TMR_AUTO_OFFON) ||
+            (!(buttons & (IN_ROCKERA | IN_ROCKERB)))) {
+            /* Sleep when auto-off time has expired or if rocker switch is
+             * turned off.
+             */
+            rgb_off();
+            dbgpin_low();
+            auto_off = 0;
+            buttons_sleep();
+            dbgpin_high();
+            reset_steps();
+            rgb_on();
+            red.value = 0;
+            grn.value = 0;
+            blu.value = 0;
+            wht.value = 0;
+        } else {
             /* Crappy way to detect rising edges to change state of speed var */
-            if (!(speed & 4) && (buttons & IN_PUSHBTN)) {
+            if (!(speed & 4) && (buttons & IN_PUSHBTN))
                 speed |= 4;
-            } else if ((speed & 4) && !(buttons & IN_PUSHBTN)) {
+            else if ((speed & 4) && !(buttons & IN_PUSHBTN)) {
                 speed = (speed + 1) & ~4;
                 reset_steps();
             }
@@ -114,7 +153,7 @@ int main(void)
               }
               leds_set(red, grn, blu, wht);
             } else if (--incolor_steps == 0) {
-              int newr, newg, newb, neww, tmp;
+              int newr, newg, newb, neww;
 
               /* Next led color.  All off is not a valid option.
                * RGB values are stored and processed as 15-bit non-negative
@@ -130,7 +169,7 @@ int main(void)
 
               /* Next incolor and fade steps */
               incolor_steps = rand_incolor_steps(speed);
-              fade_steps = (buttons & IN_ROCKERA) ? 1 : rand_fade_steps(speed);
+              fade_steps = rand_fade_steps(speed);
 
               /* Compute increment and remainder for each led */
               red.increment = (newr - red.value) / fade_steps;
@@ -142,16 +181,9 @@ int main(void)
               wht.increment = (neww - wht.value) / fade_steps;
               wht.remainder = neww - (wht.value + wht.increment * fade_steps);
             }
-            __delay_ms(STEP_SIZE); /* step should be start to start... */
-        } else {
-            rgb_off();
-            buttons_sleep();
-            reset_steps();
-            rgb_on();
-            red.value = 0;
-            grn.value = 0;
-            blu.value = 0;
-            wht.value = 0;
+            dbgpin_low();
+            while (!tmr_fired(TMR_FADE));
+            dbgpin_high();
         }
     }
     return 0;