streamline logic, change light threshold

[sensor-light.git] / msp430 / main.c

diff --git a/msp430/main.c b/msp430/main.c
index 6b075ad91d6b9753f86cb258216d88227842d174..fc80ae9b04fdbeeb4e180960ee4b055c34d745db 100644 (file)
--- a/msp430/main.c
+++ b/msp430/main.c
@@ -6,8 +6,8 @@ enum {ev_btn1 = 0, ev_btn2, ev_pir1, ev_pir2, ev_tmr, ev_adc, ev_MAX};
 
 #define PWM_ORDER 10
 #define PWM_HALF 5
-#define LIGHT_THRESHOLD 600
-#define TIME_ON 16
+#define LIGHT_THRESHOLD 800
+#define TIME_ON 160
        
 #ifdef ADCSC /* Let us hope that this is a "new" model */
 # define BIT_RL BIT0
@@ -36,8 +36,7 @@ int main(void)
 {
        int Duty_Cycle = 0;
        int Increment = 1;
-       unsigned int Time_Count = 0;
-       unsigned int Time_Left = 5;
+       unsigned int Time_Left = 50;
        unsigned int Time_Indicate = 2;
 
        WDTCTL = WDTPW | WDTHOLD;       // stop watchdog timer
@@ -161,12 +160,11 @@ int main(void)
                                if (!Time_Indicate)
                                        P1OUT &= ~(BIT_RL|BIT_GL); // LEDs off
                        }
-                       if (Time_Count++ > 10) {
-                               Time_Count = 0;
-                               if (Time_Left)
-                                       Time_Left--;
-                               else if (Duty_Cycle > 1)
-                                       Increment = -1;
+                       if (Time_Left) {
+                               Time_Left--;
+                               if (!Time_Left)
+                                       if (Duty_Cycle)
+                                               Increment = -1;
                        }
                        if (Increment > 0) {
                                if (++Duty_Cycle >= (PWM_ORDER<<1)) {
@@ -178,7 +176,7 @@ int main(void)
                                        Duty_Cycle = 0;
                                        Increment = 0;
                                }
-                       } else
+                       } else // Increment _was_ zero - no change!
                                continue;
 
                        TA0CCR2 = expon2(Duty_Cycle);