X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=src%2Fcore%2Fao.h;h=e559e876b0209c62eece17b66785ca6e153606de;hb=46abd248fb2eb84f161672ffce121b2203d42be0;hp=711b3533069ef7127ee49cd0601bb602a94d9945;hpb=a07b8ba166e05e7d1722c59651ef00e9fb7580d5;p=fw%2Faltos

diff --git a/src/core/ao.h b/src/core/ao.h
index 711b3533..e559e876 100644
--- a/src/core/ao.h
+++ b/src/core/ao.h
@@ -85,7 +85,9 @@ ao_panic(uint8_t reason);
 extern volatile __data AO_TICK_TYPE ao_tick_count;
 
 /* Our timer runs at 100Hz */
+#ifndef AO_HERTZ
 #define AO_HERTZ		100
+#endif
 #define AO_MS_TO_TICKS(ms)	((ms) / (1000 / AO_HERTZ))
 #define AO_SEC_TO_TICKS(s)	((s) * AO_HERTZ)
 
@@ -117,11 +119,13 @@ ao_clock_init(void);
  * ao_mutex.c
  */
 
+#ifndef ao_mutex_get
 void
 ao_mutex_get(__xdata uint8_t *ao_mutex) __reentrant;
 
 void
 ao_mutex_put(__xdata uint8_t *ao_mutex) __reentrant;
+#endif
 
 /*
  * ao_cmd.c
@@ -268,11 +272,13 @@ ao_temp_to_dC(int16_t temp) __reentrant;
  * Convert between pressure in Pa and altitude in meters
  */
 
-int32_t
+#include <ao_data.h>
+
+alt_t
 ao_pa_to_altitude(int32_t pa);
 
 int32_t
-ao_altitude_to_pa(int32_t alt);
+ao_altitude_to_pa(alt_t alt);
 
 #if HAS_DBG
 #include <ao_dbg.h>