mplabx file updates

[rgblamp.git] / main.c

diff --git a/main.c b/main.c
index 9163c1c77e1a32af312c3d7a90e4b6a94eecb52f..602e7aa81ad70594ad9addfb20c64138c2be8233 100644 (file)
--- a/main.c
+++ b/main.c
@@ -1,18 +1,40 @@
 /*
  * File:   main.c
  *
- * Created on August 16, 2010, 12:09 PM
+ * PWM test program
+ *
+ * PIC resources in use, 18-pin DIP, by pin:
+ * - ( 1) RA2 - unused
+ * - ( 2) RA3 - CCP3 PWM for blu LED
+ * - ( 3) RA4 - CCP4 PWM for wht LED.  ICSP pin 6, PGM/LVP.
+ * - ( 4) RA5 -                        ICSP pin 1, MCLR#/Vpp
+ * - ( 5) Vss
+ * - ( 6) RB0 - pushbutton
+ * - ( 7) RB1 - unused
+ * - ( 8) RB2 - unused
+ * - ( 9) RB3 - CCP1 PWM for red LED
+ * - (10) RB4 - rocker switch position B (right)
+ * - (11) RB5 - rocker switch position A (left)
+ * - (12) RB6 - unused (future crystal)
+ * - (13) RB7 - unused (future crystal)
+ * - (14) Vdd
+ * - (15) RA6 - unused
+ * - (16) RA7 - CCP2 PWM for grn LED
+ * - (17) RA0 - unused
+ * - (18) RA1 - unused
+ *
  */
 
-#define RUNAT32MHZ /* else 16 MHz */
-
 #include <htc.h>
 #include <stdlib.h>
 #include "picinit.h"
+#include "unused.h"
 #include "buttons.h"
 #include "rgb.h"
+#include "timer.h"
+#include "adc_random.h"
 
-#define STEP_SIZE               32 /* ms */
+#define AUTO_OFF_COUNT          549316UL /* 5 hrs in 32.768 ms units */
 #define reset_steps()           do { incolor_steps = 1; fade_steps = 0; } \
                                   while (0)
 #define rand_u8()               (rand() & 0xff)
@@ -24,7 +46,17 @@
 #define leds_set(r,g,b,w)       rgb_set((r).value >> 7, \
                                   (g).value >> 7, \
                                   (b).value >> 7, \
-                                  (w).value >> 7)
+                                  0)
+
+#define dbgpin_init() \
+do { \
+  /* Set RA2 as output low */ \
+  PORTA &= ~0x04; \
+  TRISA &= ~0x04; \
+} while (0)
+
+#define dbgpin_high() PORTA |= 0x04;
+#define dbgpin_low()  PORTA &= ~0x04;
 
 typedef struct {
   int value;
@@ -55,23 +87,48 @@ 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();
-    reset_steps();
+    timer_init();
+    dbgpin_init();
 
+    srand((adc_random() << 8) + adc_random());
+    reset_steps();
     if (buttons_on())
       rgb_on();
 
+    dbgpin_high();
     while (1) {
         unsigned char buttons = buttons_read();
 
-        if ((buttons & (IN_ROCKERA | IN_ROCKERB))) {
+        if ((buttons & IN_ROCKERB) && auto_off == 0)
+            auto_off = AUTO_OFF_COUNT;
+
+        if (((buttons & IN_ROCKERB) && auto_off && --auto_off == 0) ||
+            (!(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();
             }
@@ -107,7 +164,7 @@ 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;
@@ -119,16 +176,9 @@ 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();
+            timer_owait(); /* wait 32 ms since last return from last call() */
+            dbgpin_high();
         }
     }
     return 0;