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-rw-r--r--protocol.mk2
-rw-r--r--protocol/ps2_io_avr.c1
2 files changed, 3 insertions, 0 deletions
diff --git a/protocol.mk b/protocol.mk
index e057d1d601..d9194b2bfc 100644
--- a/protocol.mk
+++ b/protocol.mk
@@ -15,11 +15,13 @@ endif
ifdef PS2_USE_INT
SRC += protocol/ps2_interrupt.c
+ SRC += protocol/ps2_io_avr.c
OPT_DEFS += -DPS2_USE_INT
endif
ifdef PS2_USE_USART
SRC += protocol/ps2_usart.c
+ SRC += protocol/ps2_io_avr.c
OPT_DEFS += -DPS2_USE_USART
endif
diff --git a/protocol/ps2_io_avr.c b/protocol/ps2_io_avr.c
index be13d6696a..ed462345ba 100644
--- a/protocol/ps2_io_avr.c
+++ b/protocol/ps2_io_avr.c
@@ -1,4 +1,5 @@
#include <stdbool.h>
+#include <avr/io.h>
#include <util/delay.h>
/* Check port settings for clock and data line */