Revision 2:6daf72c57cee, committed 2015-01-11

Comitter:

Belesiu

Date:

Sun Jan 11 23:10:16 2015 +0000

Parent:

1:0cf1f2254f10

Commit message:

Test program to check DAC output given a fixed input range.

Changed in this revision

diff -r 0cf1f2254f10 -r 6daf72c57cee main.cpp
--- a/main.cpp	Sat Jan 03 22:40:31 2015 +0000
+++ b/main.cpp	Sun Jan 11 23:10:16 2015 +0000
@@ -15,11 +15,15 @@
 char range_read[2];
 float range;
 
+#define N 8
+float test_range[N] = {26.0, 100.0, 200.0, 300.0, 400.0,500.0, 600.0, 765.0};
+
 AnalogOut signal(p18);
 
 int main()
 {
     int x = 0;
+    int i = 0;
 
     while(1) {
 
@@ -28,27 +32,21 @@
         wait(0.2);
         myled = 0;
         wait(0.2);
-        // pc.printf("Hello Jim! - %d\n", x++);
-
-        // For MB7040
+        // pc.printf("Canned test program! - %d:  ", x++);
 
-        config_r[0] = 0x00; // set pointer reg to ‘cmd register'
-        config_r[1] = 0x51; // config data byte1
-        rangefinder.write(addr, config_r, 2);
-        wait(0.07);
+        range = test_range[i];
 
-        config_r[0] = 0x02; //set pointer reg to 'data register'
-        rangefinder.write(addr, config_r, 1);   //send to pointer 'read range'
-        rangefinder.read(addr, range_read, 2);  //read the two-byte range data
-        range = ((range_read[0] << 8) + range_read[1]);
-
-        pc.printf("%d Range = %.2f cm\n\r", x++, range); //print range on screen
+        pc.printf("%d Range = %.2f cm", x++, range); //print range on screen
         wait(0.05);
         
         // Output voltage proportional to distance.
         // The output value for the variable signal is 0 to 1.0.
         
         signal = range / 765.0;
+        
+        pc.printf(" Signal[%d] = %.2f \n\r", i, range / 765.0);
+        wait(2.0);
+        if(++i == N) i = 0;
 
     }
 }