NMHU example for light sensor SSD 341

Dependencies:   SLCD mbed

Fork of lightsense_kl46z_states by Stanley Cohen

Revision:
5:817aa144563d
Parent:
4:bd42ab18979b
Child:
6:710e18c552f5
--- a/main.cpp	Thu Sep 11 22:32:51 2014 +0000
+++ b/main.cpp	Fri Sep 12 19:46:15 2014 +0000
@@ -7,17 +7,17 @@
 #define PROGNAME "blink_kl46z_states v1\n\r"
 #define LEDON false
 #define LEDOFF true
-#define PWMDWELL 50 // milliseconds
+#define LEDTMESS "TRUE"
+#define LEDFMESS "FALS"
+#define BLINKDWELL 400 // milliseconds
 #define DFDELTA 0.01
 #define PWMTIME 1 // ms (kHz
 #define LCDLEN 10
-#define RMPUP true
-#define RMPDWN false
 #define NUMSTATES 2
-#define NEWDUTYFACTOR 1
+#define NEWBLINK 1
 #define IDLESTATE 0
 
-
+char logicalString [NUMSTATES][LCDLEN] = {LEDFMESS, LEDTMESS};
 SLCD slcd; //define LCD display globally define
 Serial pc(USBTX, USBRX);
 
@@ -28,46 +28,38 @@
 } 
 
 int main() {
-    PwmOut greenColor(LED_GREEN);
-    PwmOut redColor(LED_RED);
+    DigitalOut greenColor(LED_GREEN);
+    DigitalOut redColor(LED_RED);
     char lcdData[LCDLEN];
     Timer LEDTimer;  // time till next PWM values is to change.
-    int dfState = IDLESTATE; // work till timer transitions
-    float dutyFactor = 0.0;  
-    float workingDelta; // hold value of direction of duty factor
+    int PGMState = IDLESTATE; // work till timer transitions
+    int ledState = LEDON;  
+    
    
-    int timeToChangeDF = PWMDWELL;
+    int timeToChangeDF = BLINKDWELL;
     // set up timer for next step of Duty Factor timing
     LEDTimer.start();
     LEDTimer.reset();
     pc.printf(PROGNAME);
     
-    greenColor.period_ms(PWMTIME); // set the frequency of the pulse train
-    redColor.period_ms(PWMTIME);   // so there is no flickering
     
-    workingDelta = DFDELTA;
 
     while(true) {
-        switch (dfState){ 
+        switch (PGMState){ 
             case IDLESTATE: {
                 if (LEDTimer.read_ms() > timeToChangeDF){ // check for timer time out transtion
-                    dfState = NEWDUTYFACTOR;
-                    LEDTimer.reset();
+                    PGMState = NEWBLINK;
                     }
                 break;
               }
-             case  NEWDUTYFACTOR: {              
-                dutyFactor += workingDelta;           
-                if(dutyFactor >= 1.0) workingDelta = -workingDelta; // change direction if needed
-                if(dutyFactor < DFDELTA) workingDelta = DFDELTA; 
-                redColor.write(dutyFactor);
-                greenColor.write(1.0 - dutyFactor);
-                // print to LCD screen
-                sprintf (lcdData,"%4.3f",dutyFactor);  
-                LCDMess(lcdData);
-                
+             case  NEWBLINK: {              
+                ledState = !ledState;
+                redColor = ledState;
+                greenColor = !ledState;
+                sprintf(lcdData,logicalString[ledState]);
+                LCDMess(lcdData);               
                 LEDTimer.reset();  // reset the timer
-                dfState = IDLESTATE;  // go idle state
+                PGMState = IDLESTATE;  // go idle state
                 break;
               }
         } // end state machine