Speaking of reliable_sync, a section of code in the state machine can be
modified to reduce wasted cpu, although it is probably an obscure
occurrence.
That is, in fdmdv2_main.cpp where it checks the reliable_sync bit and gets
a second half instead of a first half. I think it is missing an "else" but
I've only done simple testing on this.
See attached
diff -ruN freetel-code/fdmdv2-dev/src/fdmdv2_main.cpp
freetel-code-new/fdmdv2-dev/src/fdmdv2_main.cpp
--- freetel-code/fdmdv2-dev/src/fdmdv2_main.cpp 2014-06-26 19:29:14.945589905
-0500
+++ freetel-code-new/fdmdv2-dev/src/fdmdv2_main.cpp 2014-06-26
19:33:56.593581583 -0500
@@ -3196,12 +3196,12 @@
}
if (reliable_sync_bit)
{
+ // got second half, want first half
next_state = 1;
- }
-
- // first half of frame of codec bits
- memcpy(codec_bits, rx_bits, bits_per_fdmdv_frame *
sizeof(int));
-
+ } else {
+ // first half of frame of codec bits
+ memcpy(codec_bits, rx_bits, bits_per_fdmdv_frame *
sizeof(int));
+ }
break;
case 2:
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