Diff: main.cpp

Revision:

0:2a78fd35d2ed

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sun Jul 15 22:03:16 2018 +0000
@@ -0,0 +1,34 @@
+/*
+The following program has been written to run on FRDM-K64F Board. But since 
+the code is modular it can be run on any dev board with analog input and pwm 
+output  functionality. Remember to update the port names correponding to the 
+board and pin being used. 
+Here, we have used a 3 terminal potentiometer with first connection to the 3.3V 
+pin on the board, the second connection to A0 pin and the third one to the 
+ground of the board. The PWM output pin (A5) is connected to 10K resistor in 
+series with a LED. The negative teminal of LED is connected to the ground of the
+board.  
+*/
+#include "mbed.h"
+
+AnalogIn Pot(A0);  //Potentiometer Input Port PTB2
+PwmOut PWM(A5); //PWM Output Port PTC10
+
+Serial pc(USBTX,USBRX); //Used for serial communication
+
+float period = 500; //the total width of the pwm
+float x = 0; // to store the value from adc
+
+int main()
+{
+    PWM.period_ms(period); //setting the pwm period width
+    
+    while(1)
+    {
+        x = Pot.read(); // the value of x will be between 0 and 1
+        PWM.pulsewidth_ms(int(x*period)); //sets the duration of high during PWM
+        pc.printf("Potentiometer Value =(%d)\r\n", x); //to see in terminal
+        wait_ms(100); //General value based on desired speed of operation
+     }
+ }       
+        
\ No newline at end of file