From: Keith Packard <keithp@keithp.com>
Date: Fri, 29 Jun 2012 00:43:36 +0000 (-0700)
Subject: altos: Declare cc1111 accel_ref as unsigned so the math works
X-Git-Tag: 1.0.9.6^0
X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=commitdiff_plain;h=edbc5d27c8c2936b59ff5289276d9198b501ebc8

altos: Declare cc1111 accel_ref as unsigned so the math works

If accel_ref is signed, then the careful shifting and dividing dance
necessary to correct for changes in the relationship between the 5V
and 3.3V supplies always generates zero.

Signed-off-by: Keith Packard <keithp@keithp.com>
---

diff --git a/src/cc1111/ao_arch.h b/src/cc1111/ao_arch.h
index cece09eb..8d9e4952 100644
--- a/src/cc1111/ao_arch.h
+++ b/src/cc1111/ao_arch.h
@@ -206,7 +206,7 @@ struct ao_adc {
 	int16_t		sense_d;	/* drogue continuity sense */
 	int16_t		sense_m;	/* main continuity sense */
 #if HAS_ACCEL_REF
-	int16_t		accel_ref;	/* acceleration reference */
+	uint16_t	accel_ref;	/* acceleration reference */
 #endif
 };