Diff: main.cpp

Revision:

16:028a8548ab22

Parent:

15:236d90e38951

Child:

17:fcc378db08f4

--- a/main.cpp	Tue Dec 09 18:21:26 2014 +0000
+++ b/main.cpp	Tue Dec 09 20:06:17 2014 +0000
@@ -44,8 +44,10 @@
 DigitalOut E_in(PTE4);
 DigitalOut F_in(PTE5);
 
+DigitalOut scan_select(PTC3);
+
 AnalogIn  adc(PTB0);
-
+AnalogOut dac(PTE30);
 
 
 
@@ -141,10 +143,11 @@
 }
 
 void read_voltages(float voltages[48]) {
+    scan_select = 0;
     int sn = 0;
     for (int i=0;i<48;i++) { // iterate over two columns of breadboard
         // iterate over 24 rows of each column
-            sn = i; // maybe?????
+            sn = i; 
             D_in = (sn)%2;
             E_in = ((sn)/2)%2;
             F_in = ((sn)/4)%2;
@@ -157,8 +160,46 @@
     }
 }
 
-void compare_voltages(float voltages[48], float clientdata[48], int colselect, int rowselect, float vddval) {
+void float_check(float voltages[48],float dacval) {
+    int sn = 0;
+    for (int i=0;i<48;i++) { // iterate over two columns of breadboard
+        // iterate over 24 rows of each column
+            sn = i; 
+            D_in = (sn)%2;
+            E_in = ((sn)/2)%2;
+            F_in = ((sn)/4)%2;
+            A_in = ((sn)/8)%2;
+            B_in = ((sn)/16)%2;
+            C_in = ((sn)/32)%2;
+            
+            scan_select = 1;
+            scan_select = 0;
+            wait(0.01);
+            float in_val = adc.read();
+            voltages[sn] = in_val;
+            
+            wait(0.01);
+            
+            scan_select = 1;
+            scan_select = 0;
+            wait(0.01);
+            in_val = adc.read();
+   
+            
+            if ((in_val < voltages[sn]-0.004) || (in_val > voltages[sn]+0.004)){
+                voltages[sn] = 100;
+            
+            }
+            
+        
+    }
+}
+
+
+
+void compare_voltages(float voltages[48], float clientdata[48], int colselect, int rowselect, float vddval, float floatchecked[48]) {
     // get selected row voltage
+    scan_select = 0;
     float rowval = voltages[(colselect*24)+ rowselect];
     for (int i=0;i<48;i++) {
         int client_index = (colselect*24)+rowselect;
@@ -172,6 +213,11 @@
 
         float in_val = adc.read();
         
+        if (floatchecked[sn] == 100){
+            set_led(i,LED_OFF);
+            clientdata[client_index] = 100.0;
+            }
+        else {    
         
         if (!voltages_equal(voltages[i],in_val)) {
             // this row is floating
@@ -193,8 +239,9 @@
             set_led(i,LED_OFF);
             clientdata[client_index] = voltages[i];
         }
-    }
-}
+        } // else if closing
+    } //for loop closing
+ } //compare_voltages function closing
 
 
 int main()
@@ -206,6 +253,10 @@
     float clientdata[48] = {};
     float vddval = 0.0;
     float rowval = 0.0;
+    float dacval = 0.1;
+    
+    float floatout[48] = {};
+    float floatoutsecond[48] = {};
 
     //LED init
     int rowselect = 0, moved = 1, colselect = 0, selected = 0, oldselected = 49;
@@ -311,11 +362,14 @@
 
             // first set of voltages read into old_volt_mat
             read_voltages(originalvoltages);
-            wait(0.2);
+            wait(0.4);
             read_voltages(newvoltages);
             // second set for comparison, read into clientdata
+            wait(0.4);
+            compare_voltages(originalvoltages,clientdata,colselect,rowselect,vddval,floatout);
+        
             wait(0.2);
-            compare_voltages(originalvoltages,clientdata,colselect,rowselect,vddval);
+            float_check(floatout,dacval);
 
             selected = (colselect * 24) + (rowselect+1);
             rowval = newvoltages[selected-1];
@@ -331,12 +385,12 @@
             }
             pc.printf(" \r\n \r\n ");
             for (int x = 0; x < 48; x++) {
-                    pc.printf("%1.3f  %1.3f \r\n", originalvoltages[x], newvoltages[x]);
+                    pc.printf("%1.3f  %1.3f  %1.3f \r\n", originalvoltages[x], newvoltages[x], floatout[x]);
             }
             ////////////////////////
 
 
-            wait(0.3);  //THIS NEEDS TO GO AWAY! 
+            wait(0.1);  //THIS NEEDS TO GO AWAY! 
 
             } // END OF SCANBUTTON IF STATEMENT