Liam G / Mbed 2 deprecated AD9850 function generator SPI driver

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Dependencies:   mbed

Files at this revision

API Documentation at this revision

Revision 1:b0e6c82af2ef, committed 2013-09-28

Comitter:
liamg
Date:
Sat Sep 28 06:44:57 2013 +0000
Parent:
0:b5fb7b3adfe2
Commit message:
Version 2 with updated commentary

Changed in this revision

main.cpp Show annotated file Show diff for this revision Revisions of this file 
diff -r b5fb7b3adfe2 -r b0e6c82af2ef main.cpp
--- a/main.cpp	Sat Sep 28 04:32:20 2013 +0000
+++ b/main.cpp	Sat Sep 28 06:44:57 2013 +0000
@@ -70,14 +70,14 @@
     while(1)
     {
     
-    while (targetFrq<0x28F5C28F) // 20MHz
+    while (targetFrq<0x28F5C28F) // up to 20MHz
     {
-        writeSPI(reverseBits(targetFrq),0);
+        writeSPI(reverseBits(targetFrq),0); // Don't use phase so set to zero.
         targetFrq=targetFrq+increment;
         //wait_ms(100);
         }
         
-    while (targetFrq>0x147AE148) // 10MHz
+    while (targetFrq>0x147AE148) // down to 10MHz
     {
         writeSPI(reverseBits(targetFrq),0);
         targetFrq=targetFrq-increment;