From: Jan "Yenya" Kasprzak <kas@fi.muni.cz>
Date: Wed, 27 Feb 2013 22:27:46 +0000 (+0100)
Subject: battery.c: priority of operations
X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?p=bike-lights.git;a=commitdiff_plain;h=c919c204874b9455471744eb6b802534ed629fcc

battery.c: priority of operations

... in order to fit to an 8-bit value.
---

diff --git a/firmware/battery.c b/firmware/battery.c
index 284c096..01337db 100644
--- a/firmware/battery.c
+++ b/firmware/battery.c
@@ -23,8 +23,8 @@ void battery_adc(uint16_t adcval)
 	 * is coarse (0.1 V).
 	 */
 	battery_100mv = (unsigned char)
-		((uint16_t)(adcval * 11                              // 1.1V
+		((uint16_t)(adcval * (11                   // 1.1V
 		* (RESISTOR_HI+RESISTOR_LO)/RESISTOR_LO    // resistor ratio
-		/ 4) >> 8);                                // divide by 1024
+		/ 4)) >> 8);                               // divide by 1024
 }