altos: Make sure AO_MMA655X_INVERT is declared where needed

[fw/altos] / src / kernel / ao_data.h

diff --git a/src/kernel/ao_data.h b/src/kernel/ao_data.h
index 8f75ad876b612e3cc1480e1fc9aa9fc8024908bd..6ee0965d4e732ed4ce25adec78ac11231942356e 100644 (file)
--- a/src/kernel/ao_data.h
+++ b/src/kernel/ao_data.h
@@ -269,6 +269,10 @@ typedef int16_t accel_t;
 
 #define AO_ACCEL_INVERT                4095
 
+#ifndef AO_MMA655X_INVERT
+#error AO_MMA655X_INVERT not defined
+#endif
+
 #define ao_data_accel(packet)                  ((packet)->mma655x)
 #if AO_MMA655X_INVERT
 #define ao_data_accel_cook(packet)             (AO_ACCEL_INVERT - (packet)->mma655x)