Diff: main.cpp

Revision:

0:7eee9280f29f

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Oct 24 14:52:59 2017 +0000
@@ -0,0 +1,45 @@
+#include "mbed.h"
+#define N 1000000
+#define RELEASED 0
+#define PRESSED  1
+ 
+//Hardware objects
+DigitalOut red_led(PE_15);     //CountUp is in its critical section
+DigitalOut yellow_led(PB_10);  //CountDown is in its critical section
+DigitalOut green_led(PB_11);   //counter != 0
+DigitalOut onboardLED(LED1);
+ 
+DigitalIn button(USER_BUTTON);
+DigitalIn sw1(PE_12);
+DigitalIn sw2(PE_14);
+ 
+//The code below is hugely flawed and is only to
+//illustrate the problem of blocking hardware
+int main() {
+    
+    //Light up
+    red_led    = 1;
+    yellow_led = 1;
+    green_led  = 1;
+    onboardLED = 1;
+    
+    //Now loop forever
+    while(1) { 
+    
+        while (sw1 == RELEASED) {};
+        wait(0.2);
+        while (sw1 == PRESSED) {};    
+        red_led = !red_led;
+        wait(0.2);
+ 
+        while (sw2 == RELEASED) {};
+        wait(0.2);
+        while (sw2 == PRESSED) {};    
+        green_led = !green_led;
+        wait(0.2);
+ 
+        //Flash the yellow
+        yellow_led = !yellow_led;
+        wait(0.5);
+    };
+}