add (untested) Hamming forward error correction code and corresponding class

The system now uses a FECModem instance, which inherits the receive methods
etc. from Modem.

Up next: Make the modem's buffer read methods private and expose them in
error-corrected FECModem methods instead

1 files changed, 0 insertions, 2 deletions

diff --git a/src/modem.h b/src/modem.h
index ea308a7..4040c92 100644
--- a/src/modem.h
+++ b/src/modem.h
@@ -70,6 +70,4 @@ class Modem {
 		void receive(void);
 };
 
-extern Modem modem;
-
 #endif /* MODEM_H_ */