diff options
| author | Dave Parker <dparker@chromium.org> | 2014-04-11 13:38:54 -0700 |
|---|---|---|
| committer | chrome-internal-fetch <chrome-internal-fetch@google.com> | 2014-04-22 00:47:29 +0000 |
| commit | 4b530d9fce5f939e4470adc6fcb7e5ee833c509d (patch) | |
| tree | 2a4dff38660d2c8032e0ae677d38ca16bb1f6de8 | |
| parent | 58878e79e07f33050d6ff8d280e5db63b5902e10 (diff) | |
| download | chrome-ec-4b530d9fce5f939e4470adc6fcb7e5ee833c509d.tar.gz | |
Squawks: Adjust charge thresholds for altering LED behavior
The EC and host have different ways of computing and presenting
the battery charge level. This change adjusts the charge levels
at which the charging LED indicates a full and low battery to
match what is presented to the user in the host UI.
BUG=chrome-os-partner:27743,chrome-os-partner:27746
BRANCH=rambi,tot
TEST=Run "battfake 91" which charging, verify charging LED turns
green and the UI reports 95%.
Run "battfake 13" while discharging, verify charging LED blinks
amber (1 sec on, 1 sec off) and the UI reports 10%.
Change-Id: Iaffffb57a7fbfd14ebb90363cbd4aa1a9becf022
Original-Change-Id: I203c90a65e4aa2907a14077a9276674ecfa292f2
Signed-off-by: Dave Parker <dparker@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/194347
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/195848
| -rw-r--r-- | board/squawks/led.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/board/squawks/led.c b/board/squawks/led.c index 6b2f3ffe25..970ca89306 100644 --- a/board/squawks/led.c +++ b/board/squawks/led.c @@ -130,9 +130,12 @@ static enum led_color new_battery_led_color(void) (charge_get_flags() & CHARGE_FLAG_FORCE_IDLE)) return (ticks & 0x4) ? LED_GREEN : LED_OFF; - /* If the system is charging, orange under 95%; green if over */ + /* + * If the system is charging, orange; green if 95% or over. + * Subtract 5% to compensate for how the UI reports charge remaining. + */ if (chstate == PWR_STATE_CHARGE) - return charge_get_percent() < 95 ? LED_ORANGE : LED_GREEN; + return charge_get_percent() < 90 ? LED_ORANGE : LED_GREEN; /* If AC connected and fully charged (or close to it), solid green */ if (chstate == PWR_STATE_CHARGE_NEAR_FULL || @@ -140,9 +143,13 @@ static enum led_color new_battery_led_color(void) return LED_GREEN; } - /* Otherwise, discharging; flash orange if less than 10% power */ - if (charge_get_percent() < 10) - return (ticks % 8 < 2) ? LED_ORANGE : LED_OFF; + /* + * Otherwise, discharging; flash orange if 10% or less power, 50% + * duty cycle, 2 sec period. Adding 4% bias to compensate for how + * the UI reports charge remaining. + */ + if (charge_get_percent() < 14) + return (ticks & 0x4) ? LED_ORANGE : LED_OFF; /* Discharging and greater than 10% power, so off */ return LED_OFF; |