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-rw-r--r--avr/serial.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/avr/serial.h b/avr/serial.h
index 1a0f510..7414ef1 100644
--- a/avr/serial.h
+++ b/avr/serial.h
@@ -2,7 +2,8 @@
#define SERIAL_H
void serial_setup(void);
-void serial_putc(uint8_t);
+void serial_putc(char);
int serial_getc(void);
+uint_fast8_t serial_tstc(void);
#endif /* SERIAL_H */