Diff: main.cpp

Revision:

0:652d94a5c5ac

Child:

1:0c71a0a434be

diff -r 000000000000 -r 652d94a5c5ac main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sun Jul 03 16:24:27 2016 +0000
@@ -0,0 +1,45 @@
+#include "mbed.h" //Importing mbed header files
+#include "MMA8451Q.h" //Importing libraries to get accelerometer values
+#define MMA8451_I2C_ADDRESS (0x1d<<1) //Setting Accelerometer address
+MMA8451Q acc(PTE25, PTE24, MMA8451_I2C_ADDRESS); //Initializing accelerometer pins and address
+BusOut led(PTB18,PTB19,PTD1); //BusOut to control ON/OFF state of 3 LEDs
+int main() 
+{
+    led=0x7; //Ensure all LEDs are off initially
+    int i=0; //Counter to toggle light color
+    int yvali; //Variable to get value of Y axis of accelerometer
+    while(1) 
+    {
+        yvali = abs(acc.getAccY()*100); //Getting absolute value of Y axis acceleration
+        if(yvali>30) //Initialize shake loop, once execution enters this loop, at least one LED change SHOULD BE visible
+        {
+            while(yvali>30) //Ensure that light change is not triggered during the duration of shake
+            {
+                if(yvali<30) //Checking if shaking has stopped
+                {
+                    wait(50); //delay to sample after 50ms
+                    if(yvali<30) //Ensuring if shaking has stopped
+                    {
+                        if(i==0) //Turn on only red LED once every three light swithches
+                        {
+                            led=0x6;
+                        }
+                        else if(i==1) //Turn on only green LED once every three light swithches
+                        {
+                            led=0x5;
+                        }
+                        else if(i==2) //Turn on only blue LED once every three light swithches
+                        {
+                            led=0x3;
+                        }
+                        i++; //Increment counter
+                        if(i==3) //Ensure counter always increments between 0 to 2
+                        {
+                            i=0;
+                       }
+                    }
+                } //Exit when LED color is changed one time
+            } //End of light change loop after shaking stops
+        }
+    } //Infinite loop to keep measuring Y axis acceleration
+}