patch to STAR_momentary firmware for PD68 TripleDown

diff --git a/STAR_momentary.c b/STAR_momentary.c
index 1cbed87..4502b36 100644
--- a/STAR_momentary.c
+++ b/STAR_momentary.c
@@ -72,11 +72,12 @@
  */

 #define VOLTAGE_MON            // Comment out to disable - ramp down and eventual shutoff when battery is low
-#define MODES          0,3,14,39,125,255       // Must be low to high, and must start with 0
-#define ALT_MODES      0,3,14,39,125,255       // Must be low to high, and must start with 0, the defines the level for the secondary output. Comment out if no secondary output
-#define MODE_PWM       0,PHASE,FAST,FAST,FAST,PHASE        // Define one per mode above. 0 tells the light to go to sleep
-#define TURBO              // Comment out to disable - full output with a step down after n number of seconds
-                           // If turbo is enabled, it will be where 255 is listed in the modes above
+#define MODES          0,3,14,39,125,255,TURBO     // Must be low to high, and must start with 0
+#define ALT_MODES      0,3,14,39,125,255,0         // Must be low to high, and must start with 0, the defines the level for the secondary output. Comment out if no secondary output
+#define MODE_PWM       0,PHASE,FAST,FAST,FAST,PHASE,PHASE      // Define one per mode above. 0 tells the light to go to sleep
+#define TURBO          254 // Convenient define for the turbo level in MODES above.
+                           // full output with a step down after n number of seconds if TURBO_TIMEOUT is defined.
+                           // This is not defined to 255 so that value remains a valid PWM choice in MODES.
 #define TURBO_TIMEOUT  5625 // How many WTD ticks before before dropping down (.016 sec each)
                            // 90  = 5625
                            // 120 = 7500
@@ -103,7 +104,8 @@
 #include <avr/sleep.h>
 //#include <avr/power.h>

-#define STAR3_PIN   PB4     // If not connected, will cycle L-H.  Connected, H-L
+#define LOW_TO_HIGH 1       // If 1, will cycle L-H. If 0, H-L
+#define FET_PIN     PB4
 #define SWITCH_PIN  PB3        // what pin the switch is connected to, which is Star 4
 #define PWM_PIN     PB1
 #define ALT_PWM_PIN PB0
@@ -140,7 +142,6 @@ const uint8_t alt_modes[] = { ALT_MODES };
 const uint8_t mode_pwm[] = { MODE_PWM };
 volatile uint8_t mode_idx = 0;
 volatile uint8_t press_duration = 0;
-volatile uint8_t low_to_high = 0;
 volatile uint8_t in_momentary = 0;

 // Debounce switch press value
@@ -288,7 +289,7 @@ ISR(WDT_vect) {

        if (press_duration == LONG_PRESS_DUR) {
            // Long press
-           if (low_to_high) {
+           if (LOW_TO_HIGH) {
                prev_mode();
            } else {
                next_mode();
@@ -318,15 +319,15 @@ ISR(WDT_vect) {
        // Not pressed
        if (press_duration > 0 && press_duration < LONG_PRESS_DUR) {
            // Short press
-           if (low_to_high) {
+           if (LOW_TO_HIGH) {
                next_mode();
            } else {
                prev_mode();
            }
        } else {
            // Only do turbo check when switch isn't pressed
-       #ifdef TURBO
-           if (modes[mode_idx] == 255) {
+       #ifdef TURBO_TIMEOUT
+           if (modes[mode_idx] == TURBO) {
                turbo_ticks++;
                if (turbo_ticks > TURBO_TIMEOUT) {
                    // Go to the previous mode
@@ -372,16 +373,16 @@ int main(void)
 {
    // Set all ports to input, and turn pull-up resistors on for the inputs we are using
    DDRB = 0x00;
-   PORTB = (1 << SWITCH_PIN) | (1 << STAR3_PIN);
+   PORTB = (1 << SWITCH_PIN);

    // Set the switch as an interrupt for when we turn pin change interrupts on
    PCMSK = (1 << SWITCH_PIN);

-    // Set PWM pin to output
+    // Set FET and PWM pin to output
    #ifdef ALT_MODES
-    DDRB = (1 << PWM_PIN) | (1 << ALT_PWM_PIN);
+    DDRB = (1 << FET_PIN) | (1 << PWM_PIN) | (1 << ALT_PWM_PIN);
    #else
-   DDRB = (1 << PWM_PIN);
+   DDRB = (1 << FET_PIN) | (1 << PWM_PIN);
    #endif

     // Set timer to do PWM for correct output pin and set prescaler timing
@@ -396,14 +397,6 @@ int main(void)
    #endif
    ACSR   |=  (1<<7); //AC off

-   // Determine if we are going L-H, or H-L based on Star 3
-   if ((PINB & (1 << STAR3_PIN)) == 0) {
-       // High to Low
-       low_to_high = 0;
-   } else {
-       low_to_high = 1;
-   }
-
    // Enable sleep mode set to Power Down that will be triggered by the sleep_mode() command.
    set_sleep_mode(SLEEP_MODE_PWR_DOWN);
    sleep_until_switch_press();
@@ -427,7 +420,18 @@ int main(void)
                    #endif
                }
            }
-           PWM_LVL     = modes[mode_idx];
+           if (modes[mode_idx] == TURBO)
+           {
+               // Turn on FET instead of main PWM.
+               PORTB |= (1 << FET_PIN);
+               PWM_LVL = 0;
+           }
+           else
+           {
+               // Turn off FET, use requested main PWM.
+               PORTB &= ~(1 << FET_PIN);
+               PWM_LVL     = modes[mode_idx];
+           }
            #ifdef ALT_MODES
            ALT_PWM_LVL = alt_modes[mode_idx];
            #endif
@@ -441,4 +445,4 @@ int main(void)
    }

     return 0; // Standard Return Code
-}
\ No newline at end of file
+}