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-rw-r--r--src/stm/ao_arch.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/stm/ao_arch.h b/src/stm/ao_arch.h
index fcc177ef..188b8996 100644
--- a/src/stm/ao_arch.h
+++ b/src/stm/ao_arch.h
@@ -201,5 +201,7 @@ ao_serial3_pollchar(void);
void
ao_serial3_set_speed(uint8_t speed);
+extern uint32_t ao_radio_cal;
+
#endif /* _AO_ARCH_H_ */