diff options
| author | Rong Chang <rongchang@chromium.org> | 2012-07-12 18:45:34 +0800 |
|---|---|---|
| committer | Gerrit <chrome-bot@google.com> | 2012-07-15 22:01:14 -0700 |
| commit | 3b0e13173dc5f082488b7fa1fe774222ea6fa983 (patch) | |
| tree | a77fded6b0a57abb4790f10f123c6996912f1669 /include/charge_state.h | |
| parent | e95813c34f59b3a1da89217f340969a4e5913389 (diff) | |
| download | chrome-ec-3b0e13173dc5f082488b7fa1fe774222ea6fa983.tar.gz | |
Debounce charging voltage when cross 8.0V
Link battery pack specification suggested a lower charging current
when voltage pass 8.0V. But the lowering the current in constant
current phase leads voltage drop. And the battery goes back to
high current zone, < 8.0V.
This CL adds a 10 seconds debounce time to prevent charging current
change too quickly.
Signed-off-by: Rong Chang <rongchang@chromium.org>
BUG=chrome-os-partner:9572
TEST=manual
watch battery V+ on oscilloscope when charging voltage cross 8.0V
Change-Id: I002f941e33b029e38f813ab2e292c6b73a054352
Reviewed-on: https://gerrit.chromium.org/gerrit/27275
Commit-Ready: Rong Chang <rongchang@chromium.org>
Reviewed-by: Rong Chang <rongchang@chromium.org>
Tested-by: Rong Chang <rongchang@chromium.org>
Diffstat (limited to 'include/charge_state.h')
| -rw-r--r-- | include/charge_state.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/charge_state.h b/include/charge_state.h index 672dab3e8b..c9129c03a5 100644 --- a/include/charge_state.h +++ b/include/charge_state.h @@ -97,9 +97,10 @@ struct power_state_context { /* Charger and battery pack info */ const struct charger_info *charger; const struct battery_info *battery; - /* Charger update timestamp */ + /* Charging timestamps */ timestamp_t charger_update_time; timestamp_t trickle_charging_time; + timestamp_t voltage_debounce_time; }; /* Trickle charging state handler. |