diff --git a/components/asic/include/serial.h b/components/asic/include/serial.h
index a8adef98..a439eeca 100644
--- a/components/asic/include/serial.h
+++ b/components/asic/include/serial.h
@@ -4,6 +4,10 @@
 #define SERIAL_BUF_SIZE 16
 #define CHUNK_SIZE 1024
 
+static uint8_t asic_timeout_counter = 0;
+static uint8_t asic_timeout_warning_threshold = 2;
+static int uart_timeout_ms = 10000;
+
 int SERIAL_send(uint8_t *, int, bool);
 void SERIAL_init(void);
 void SERIAL_debug_rx(void);