added support for LED_ENABLE_PIN having a min/max ramp level where it turns on

1 files changed, 21 insertions, 3 deletions

diff --git a/spaghetti-monster/fsm-ramping.c b/spaghetti-monster/fsm-ramping.c
index c3ad8b4..3791030 100644
--- a/spaghetti-monster/fsm-ramping.c
+++ b/spaghetti-monster/fsm-ramping.c
@@ -76,16 +76,25 @@ void set_level(uint8_t level) {
         LED_ENABLE2_PORT &= ~(1 << LED_ENABLE2_PIN);
         #endif
     } else {
-        level --;
-
         // enable the power channel, if relevant
         #ifdef LED_ENABLE_PIN
-        LED_ENABLE_PORT |= (1 << LED_ENABLE_PIN);
+            #ifndef LED_ENABLE_PIN_LEVEL_MIN
+            LED_ENABLE_PORT |= (1 << LED_ENABLE_PIN);
+            #else
+            // only enable during part of the ramp
+            if ((level >= LED_ENABLE_PIN_LEVEL_MIN)
+                    && (level <= LED_ENABLE_PIN_LEVEL_MAX))
+                LED_ENABLE_PORT |= (1 << LED_ENABLE_PIN);
+            else  // disable during other parts of the ramp
+                LED_ENABLE_PORT &= ~(1 << LED_ENABLE_PIN);
+            #endif
         #endif
         #ifdef LED_ENABLE2_PIN
         LED_ENABLE2_PORT |= (1 << LED_ENABLE2_PIN);
         #endif
 
+        level --;
+
         #ifdef USE_TINT_RAMPING
         #ifndef TINT_RAMPING_CORRECTION
         #define TINT_RAMPING_CORRECTION 26  // 140% brightness at middle tint
@@ -156,6 +165,15 @@ void gradual_tick() {
     if (gt < actual_level) gt = actual_level - 1;
     else if (gt > actual_level) gt = actual_level + 1;
 
+    #ifdef LED_ENABLE_PIN_LEVEL_MIN
+    // only enable during part of the ramp
+    if ((gt >= LED_ENABLE_PIN_LEVEL_MIN)
+            && (gt <= LED_ENABLE_PIN_LEVEL_MAX))
+        LED_ENABLE_PORT |= (1 << LED_ENABLE_PIN);
+    else  // disable during other parts of the ramp
+        LED_ENABLE_PORT &= ~(1 << LED_ENABLE_PIN);
+    #endif
+
     gt --;  // convert 1-based number to 0-based
 
     PWM_DATATYPE target;