Revision 1:eee108fd0b4b, committed 2019-04-19

Comitter:

natasha41575

Date:

Fri Apr 19 20:03:25 2019 +0000

Parent:

0:44f80f935e35

Commit message:

uploading to private repo

Changed in this revision

--- a/main.cpp	Wed Apr 17 21:40:16 2019 +0000
+++ b/main.cpp	Fri Apr 19 20:03:25 2019 +0000
@@ -5,20 +5,28 @@
 
 #include "mbed.h"
 #include "stats_report.h"
-//
-PwmOut output(PTA10);
+#include <stdio.h> 
+#include <string.h> 
+#include <stdlib.h>
+
+DigitalOut output(PTA10);
 DigitalIn input(PTD9);
 Timer timer1;
 Timer timer2;
+Timer timer_pwm;
 
 Serial pc(USBTX, USBRX); //create a Serial object
 
 int main() {
-    int period_ms = 500;
-    output.period_ms(period_ms);
-    output.write(0.5);
+    pc.baud(115200);
+    int period = 50000;
+    float duty_cycle = 0.5;
+    
+    output.write(0);
+
     timer1.start();
     timer2.start();
+    timer_pwm.start();
      
     int prev = 0;
     int count = 0;
@@ -27,7 +35,46 @@
     int time_on = 0;
    
     while(1) {
-        pc.baud(115200);
+        //pc.printf("beginning of loop\n");
+        int time_on_output = duty_cycle * period;
+        int curr_time = timer_pwm.read_us();
+        //pc.printf("%i %i\n", time_on, curr_time);
+        if (curr_time > period) {
+            output.write(1);
+            timer_pwm.reset();
+            //pc.printf("outputting 1\n");
+        } else if (curr_time > time_on_output) {
+            output.write(0);
+            //pc.printf("outputting 0\n");
+        } 
+        
+        char buffer1[20];
+        char buffer2[20];
+        if (pc.readable()) {
+            memset(buffer1, 0, 20*sizeof(char));
+            memset(buffer2, 0, 20*sizeof(char));
+            pc.scanf("%s", &buffer1);
+            pc.scanf("%s", &buffer2);
+            
+//            pc.printf("%s ", buffer1);
+//            pc.printf("%s\n", buffer2);
+            
+            int input_per_i = atoi(buffer1);
+            float input_duty_f = atof(buffer2);
+            
+//            pc.printf("%i ", input_per_i);
+//            pc.printf("%f ", input_duty_f);
+            
+            if (input_per_i < 1000 || input_per_i > 60000 || input_duty_f < 0 || input_duty_f > 1) {
+                pc.printf("mbed> ERROR\n");
+            } else { 
+                period = input_per_i;
+                duty_cycle = input_duty_f;
+//            output.period_us(atoi(input_per));
+//            output.write(atof(input_duty));
+            }
+        }
+        
         int curr = input.read();
         if (curr) {
             if (prev == 0) {
@@ -35,7 +82,7 @@
                 if (count == 0) {
                     t = timer1.read_us();
                     d = float(time_on) / t;
-                    pc.printf("mbed> %i, %f\n", t, d);
+                    pc.printf("mbed> %i, %.3f\n", t, d);
                 }
                 count = (count + 1) % 10;
                 timer1.reset();