From: Keith Packard <keithp@keithp.com>
Date: Sun, 23 Oct 2011 22:20:50 +0000 (-0700)
Subject: altos: Fix battery voltage computation.
X-Git-Tag: 1.0.9.4~97
X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=commitdiff_plain;h=90e738a3379d258a48a7c92f6708040fc39c373a

altos: Fix battery voltage computation.

Full scale is 4.95V, not 3.333V.

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

diff --git a/src/cc1111/ao_battery.c b/src/cc1111/ao_battery.c
index 070f682f..b9845fb3 100644
--- a/src/cc1111/ao_battery.c
+++ b/src/cc1111/ao_battery.c
@@ -36,7 +36,7 @@ ao_battery_get(void)
 		ADCCON3 = ADCCON3_EREF_VDD | ADCCON3_EDIV_512 | BATTERY_PIN;
 		ao_sleep(DATA_TO_XDATA(&ao_battery_value));
 		);
-	return (uint16_t) ((int32_t) ao_battery_value.v * (int32_t) 3333 >> 15);
+	return (uint16_t) ((int32_t) ao_battery_value.v * (int32_t) 4950 >> 15);
 }
 
 static void