Revision 1:178a0f92d2ab, committed 2018-10-30

Comitter:

acabate

Date:

Tue Oct 30 22:11:27 2018 +0000

Parent:

0:08026df17556

Commit message:

Lab 10/30/18

Changed in this revision

--- a/main.cpp	Mon Oct 02 01:52:48 2017 +0000
+++ b/main.cpp	Tue Oct 30 22:11:27 2018 +0000
@@ -19,6 +19,7 @@
     spi.format(8,0);
     spi.frequency(10000);
     int data1, data2, mask, channel;
+    aout = 0.0;
     // Supply voltage is nominally 3.3V
     float VCC=3.3, vIn;
     while(1) {
@@ -30,8 +31,9 @@
             }     
             cs = 0;
             data1 = spi.write(mask);
+            cs = 1;
             data2 = spi.write(0);
-            cs = 1;  
+            //cs = 1;
 // Format for MSB set
             data1 &= 0x03;  // keep only three bits
             data2 |= data1 << 8 ; // shift and add to LSB
@@ -39,6 +41,9 @@
             vIn = VCC*data2/1000.;
             pc.printf("Channel %i Voltage is %f \r\n",channel,vIn);
         }
-        wait(1);
+        aout = aout + 0.1;
+        float volt = aout;
+        pc.printf("Analog output of mbed is %f \r\n", volt);
+        //wait(1);
     }
 }