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firefly: update VBUS voltage sensing

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The voltage divider resistor values have changes to 10K/100K,
update the code to take this into account.

Signed-off-by: Vincent Palatin <vpalatin@chromium.org>

BRANCH=none
BUG=none
TEST=none

Change-Id: I2a1469e3441c4bea2bfe3f3a3b7f8ac2225cca51
Reviewed-on: https://chromium-review.googlesource.com/200343
Reviewed-by: Alec Berg <alecaberg@chromium.org>
Commit-Queue: Vincent Palatin <vpalatin@chromium.org>
Tested-by: Vincent Palatin <vpalatin@chromium.org>
This commit is contained in:
Vincent Palatin
2014-05-16 17:19:32 -07:00
committed by chrome-internal-fetch
parent f025bb66cc
commit 006a3f58b0
1 changed files with 2 additions and 2 deletions
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4
board/firefly/board.c
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@@ -148,8 +148,8 @@ const struct adc_t adc_channels[] = {
/* USB PD CC lines sensing. Converted to mV (3300mV/4096). */
[ADC_CH_CC1_PD] = {"CC1_PD", 3300, 4096, 0, STM32_AIN(0)},
[ADC_CH_CC2_PD] = {"CC2_PD", 3300, 4096, 0, STM32_AIN(2)},
/* VBUS voltage sensing is behind a 14.3K/100K voltage divider */
[ADC_CH_VBUS_SENSE] = {"VBUS", 26377, 4096, 0, STM32_AIN(5)},
/* VBUS voltage sensing is behind a 10K/100K voltage divider */
[ADC_CH_VBUS_SENSE] = {"VBUS", 36300, 4096, 0, STM32_AIN(5)},
};
BUILD_ASSERT(ARRAY_SIZE(adc_channels) == ADC_CH_COUNT);