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pick a better adc vbatt trim as default

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This commit is contained in:
Mariano Alvira 2012-10-21 15:08:58 -04:00
parent b9defeee02
commit 4d4b09f7ff
1 changed files with 13 additions and 1 deletions
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14
lib/include/adc.h
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@ -40,7 +40,19 @@
#include "utils.h"
/* the Vbatt measurment reads about 200mV low --- trim by ADC_VBATT_TRIM */
#define ADC_VBATT_TRIM 200
/* correction tracks well --- within 50mV over 2.1V to 3.6V */
/* offset from correct for tags running from 3.29 vreg */
/* trim = 146 */
/* tag 1: -90mV */
/* tag 2: -30mV */
/* tag 3: -30mV */
/* tag 4: -40mV */
/* tag 5: +10mV */
/* tag 6: -40mV */
/* new trim 183 */
/* without per unit calibration, vbatt is probably +/- 75mV */
#define ADC_VBATT_TRIM 183
/* ADC registers are all 16-bit wide with 16-bit access only */
#define ADC_BASE (0x8000D000)