Commit graph

11 commits

Author SHA1 Message Date
Ivan Grokhotkov
d2acf1ce77 sleep: add light sleep, factor out APIs common for deep/light sleep 2017-09-01 10:36:14 +08:00
Ivan Grokhotkov
a64181f14f deep sleep: add functions to check wakeup cause
This change adds esp_deep_sleep_get_wakeup_cause, which returns the
source which has caused wakeup from deep sleep.

Similar to esp_deep_sleep_get_ext1_wakeup_status, a function is added
to check touch pad wakeup status: esp_deep_sleep_get_touchpad_wakeup_status.
This function returns the touch pad which has caused wakeup.
2017-02-22 14:40:36 +08:00
Ivan Grokhotkov
07ff47f103 deep sleep: clarify compatibility issues between wakeup sources
ULP and touch FSMs in ESP32 revisions 0 and 1 do not operate correctly
if RTC_PERIPH power domain is force powered on (ESP_PD_OPTION_ON).

Both ULP and touch still work, but clock frequency of the ULP may be
incorrect and touch values may be off by considerable amount. As such,
when these wakeup modes are used, RTC_PERIPH power domain has to be set
to ESP_PD_OPTION_AUTO (or, in the current implementation,
ESP_PD_OPTION_OFF — though this will change in the future when _OFF will
actually *force* the power domain to be powered off).

Because EXT0 wakeup source requires RTC_PERIPH to be powered ON, mark
ULP and touch wakeup sources as incompatible with EXT0. Workaround for
this is to use EXT1 wakeup source instead, which offers similar or
better functions without having to keep RTC_PERIPH powered on.
2017-02-22 14:40:36 +08:00
Wangjialin
fb261c0bd5 1. deal with conflicting wakeup triggers
2. modify deep_sleep.rst, add description of touch wakeup.
2017-02-22 14:40:36 +08:00
Wangjialin
cc13b0ea05 deep sleep: allow wakeup from touch sensor interrupt 2017-02-22 14:40:36 +08:00
Ivan Grokhotkov
26dec992eb deep sleep: add note about disabling WiFi and BT
This change adds a note to esp_deep_sleep that applications should disable WiFi and BT before going into deep sleep.
SNTP example is also updated.
2017-02-21 17:07:16 +08:00
Ivan Grokhotkov
628bad1dbf deep sleep: add documentation 2016-12-16 14:31:29 +08:00
Ivan Grokhotkov
370f4b8556 deep sleep: set pin configuration right before entering deep sleep
This change allows setting pin configuration for EXT1 wakeup depending on the state of RTC_PERIPH power domain:
- if peripherals are enabled (due to another wakeup mode, or due to esp_deep_sleep_pd_config call), we can keep internal pullups/pulldowns enabled
- if peripherals are disabled, pullups and pulldowns need to be disabled as well

Also add comments about the purpose of registers being configured.
2016-12-16 14:30:27 +08:00
Ivan Grokhotkov
609d852834 deep sleep: power down RTC peripherals in EXT1 sleep 2016-12-16 14:30:27 +08:00
Ivan Grokhotkov
35115885c5 deep sleep: add API to control power down 2016-12-16 14:30:27 +08:00
Ivan Grokhotkov
88ddf5aefa deep sleep: rename header file 2016-12-16 14:30:27 +08:00