Revision 0:79c2366ff96c, committed 2015-10-04

Comitter:

laxmimerit

Date:

Sun Oct 04 11:35:54 2015 +0000

Commit message:

Generate a sine wave using DAC at PTE30

Changed in this revision

diff -r 000000000000 -r 79c2366ff96c main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sun Oct 04 11:35:54 2015 +0000
@@ -0,0 +1,23 @@
+#include "mbed.h"
+ 
+// The sinewave is created on this pin
+AnalogOut aout(PTE30);
+ 
+int main()
+{
+    const double pi = 3.141592653589793238462;
+    //const double amplitude = 1.0f;
+    const double offset = 65535/2;
+    double rads = 0.0;
+    uint16_t sample = 0;
+    
+    while(1) {
+        // sinewave output
+        for (int i = 0; i < 100; i++) {
+            rads = (pi * i) / 50.0f;
+           // sample = (uint16_t)(amplitude * (offset * (sin(rads))) + offset);
+            sample = (uint16_t)( (offset * (1+(sin(rads)))));
+            aout.write_u16(sample);
+        }
+    }
+}
\ No newline at end of file

diff -r 000000000000 -r 79c2366ff96c mbed.bld
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Sun Oct 04 11:35:54 2015 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/4f6c30876dfa
\ No newline at end of file