4 files changed, 54 insertions, 3 deletions
diff --git a/spaghetti-monster/anduril/anduril.c b/spaghetti-monster/anduril/anduril.c
index 22f6eb9..d15b5cb 100644
--- a/spaghetti-monster/anduril/anduril.c
+++ b/spaghetti-monster/anduril/anduril.c
@@ -34,6 +34,7 @@
 #define MAX_CLICKS 5
 #define USE_EEPROM
 #define EEPROM_BYTES 12
+#define USE_IDLE_MODE
 #include "spaghetti-monster.h"
 
 // Options specific to this UI (not inherited from SpaghettiMonster)
@@ -86,9 +87,14 @@ uint8_t memorized_level = MAX_1x7135;
 // smooth vs discrete ramping
 volatile uint8_t ramp_style = 0;  // 0 = smooth, 1 = discrete
 volatile uint8_t ramp_smooth_floor = 5;
+#if PWM_CHANNELS == 3
+volatile uint8_t ramp_smooth_ceil = MAX_Nx7135;
+volatile uint8_t ramp_discrete_ceil = MAX_Nx7135;
+#else
 volatile uint8_t ramp_smooth_ceil = MAX_LEVEL - 30;
-volatile uint8_t ramp_discrete_floor = 20;
 volatile uint8_t ramp_discrete_ceil = MAX_LEVEL - 30;
+#endif
+volatile uint8_t ramp_discrete_floor = 20;
 volatile uint8_t ramp_discrete_steps = 7;
 uint8_t ramp_discrete_step_size;  // don't set this
 
@@ -323,6 +329,9 @@ uint8_t steady_state(EventPtr event, uint16_t arg) {
         if (!(arg & 7)) gradual_tick();
         //if (!(arg & 3)) gradual_tick();
         //gradual_tick();
+        #ifdef USE_IDLE_MODE
+        // go_to_idle = 1;  // use less power when nothing is happening
+        #endif
         return MISCHIEF_MANAGED;
     }
     #endif
@@ -939,6 +948,12 @@ void setup() {
 
 void loop() {
 
+    #ifdef USE_IDLE_MODE
+    if (current_state == steady_state) {
+        idle_mode();
+    } else
+    #endif
+
     if (current_state == strobe_state) {
         // party / tactical strobe
         if (strobe_type < 2) {
diff --git a/spaghetti-monster/fsm-main.c b/spaghetti-monster/fsm-main.c
index d526455..a47a4bf 100644
--- a/spaghetti-monster/fsm-main.c
+++ b/spaghetti-monster/fsm-main.c
@@ -72,8 +72,8 @@ int main() {
     PORTB = (1 << SWITCH_PIN);  // e-switch is the only input
     PCMSK = (1 << SWITCH_PIN);  // pin change interrupt uses this pin
 
-    // configure sleep mode
-    set_sleep_mode(SLEEP_MODE_PWR_DOWN);
+    //// configure sleep mode
+    //set_sleep_mode(SLEEP_MODE_PWR_DOWN);
 
     // Read config values and saved state
 
@@ -133,8 +133,20 @@ int main() {
             standby_mode();
         }
 
+        #ifdef USE_IDLE_MODE
+        /*
+        // enter idle mode if requested
+        // (works better if deferred like this)
+        if (go_to_idle) {
+            go_to_idle = 0;
+            idle_mode();
+        }
+        */
+        #endif
+
         // give the recipe some time slices
         loop();
+
     }
 }
 
diff --git a/spaghetti-monster/fsm-standby.c b/spaghetti-monster/fsm-standby.c
index 44a2e0a..5312f94 100644
--- a/spaghetti-monster/fsm-standby.c
+++ b/spaghetti-monster/fsm-standby.c
@@ -40,6 +40,9 @@ void sleep_until_eswitch_pressed()
 
     PCINT_on();  // wake on e-switch event
 
+    // configure sleep mode
+    set_sleep_mode(SLEEP_MODE_PWR_DOWN);
+
     sleep_enable();
     sleep_bod_disable();
     sleep_cpu();  // wait here
@@ -57,4 +60,18 @@ void sleep_until_eswitch_pressed()
     WDT_on();
 }
 
+#ifdef USE_IDLE_MODE
+void idle_mode()
+{
+    // configure sleep mode
+    set_sleep_mode(SLEEP_MODE_IDLE);
+
+    sleep_enable();
+    sleep_cpu();  // wait here
+
+    // something happened; wake up
+    sleep_disable();
+}
+#endif
+
 #endif
diff --git a/spaghetti-monster/fsm-standby.h b/spaghetti-monster/fsm-standby.h
index a23bd0c..3a917fd 100644
--- a/spaghetti-monster/fsm-standby.h
+++ b/spaghetti-monster/fsm-standby.h
@@ -28,6 +28,13 @@ volatile uint8_t go_to_standby = 0;
 #define standby_mode sleep_until_eswitch_pressed
 void sleep_until_eswitch_pressed();
 
+#ifdef USE_IDLE_MODE
+// deferred "idle" state trigger
+// stops processing until next click or timer tick
+//volatile uint8_t go_to_idle = 0;
+void idle_mode();
+#endif
+
 // TODO: half-sleep "twilight" mode with WDT on but running slowly
 
 #endif