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examples/power_save: set CPU frequencies in sdkconfig

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This commit is contained in:
Ivan Grokhotkov 2018-07-26 02:02:31 +03:00
parent bcf79e5cf2
commit 3cec686803
2 changed files with 86 additions and 34 deletions
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109
examples/wifi/power_save/main/Kconfig.projbuild
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@ -1,43 +1,96 @@
menu "Example Configuration"
config WIFI_SSID
string "WiFi SSID"
default "myssid"
help
SSID (network name) for the example to connect to.
string "WiFi SSID"
default "myssid"
help
SSID (network name) for the example to connect to.
config WIFI_PASSWORD
string "WiFi Password"
default "mypassword"
help
WiFi password (WPA or WPA2) for the example to use.
string "WiFi Password"
default "mypassword"
help
WiFi password (WPA or WPA2) for the example to use.
config WIFI_LISTEN_INTERVAL
int "WiFi listen interval"
default 3
help
Interval for station to listen to beacon from AP. The unit of listen interval is one beacon interval.
For example, if beacon interval is 100 ms and listen interval is 3, the interval for station to listen
to beacon is 300 ms.
int "WiFi listen interval"
default 3
help
Interval for station to listen to beacon from AP. The unit of listen interval is one beacon interval.
For example, if beacon interval is 100 ms and listen interval is 3, the interval for station to listen
to beacon is 300 ms.
choice POWER_SAVE_MODE
prompt "power save mode"
default POWER_SAVE_MIN_MODEM
help
Power save mode for the esp32 to use. Modem sleep mode includes minimum and maximum power save modes.
In minimum power save mode, station wakes up every DTIM to receive beacon. Broadcast data will not be
lost because it is transmitted after DTIM. However, it can not save much more power if DTIM is short
for DTIM is determined by AP.
In maximum power save mode, station wakes up every listen interval to receive beacon. Broadcast data
may be lost because station may be in sleep state at DTIM time. If listen interval is longer, more power
is saved but broadcast data is more easy to lose.
prompt "power save mode"
default POWER_SAVE_MIN_MODEM
help
Power save mode for the esp32 to use. Modem sleep mode includes minimum and maximum power save modes.
In minimum power save mode, station wakes up every DTIM to receive beacon. Broadcast data will not be
lost because it is transmitted after DTIM. However, it can not save much more power if DTIM is short
for DTIM is determined by AP.
In maximum power save mode, station wakes up every listen interval to receive beacon. Broadcast data
may be lost because station may be in sleep state at DTIM time. If listen interval is longer, more power
is saved but broadcast data is more easy to lose.
config POWER_SAVE_NONE
bool "none"
bool "none"
config POWER_SAVE_MIN_MODEM
bool "minimum modem"
bool "minimum modem"
config POWER_SAVE_MAX_MODEM
bool "maximum modem"
bool "maximum modem"
endchoice
choice EXAMPLE_MAX_CPU_FREQ
prompt "Maximum CPU frequency"
default EXAMPLE_MAX_CPU_FREQ_80
help
Maximum CPU frequency to use for dynamic frequency scaling.
config EXAMPLE_MAX_CPU_FREQ_80
bool "80 MHz"
config EXAMPLE_MAX_CPU_FREQ_160
bool "160 MHz"
config EXAMPLE_MAX_CPU_FREQ_240
bool "240 MHz"
endchoice
config EXAMPLE_MAX_CPU_FREQ_MHZ
int
default 80 if EXAMPLE_MAX_CPU_FREQ_80
default 160 if EXAMPLE_MAX_CPU_FREQ_160
default 240 if EXAMPLE_MAX_CPU_FREQ_240
choice EXAMPLE_MIN_CPU_FREQ
prompt "Minimum CPU frequency"
default EXAMPLE_MIN_CPU_FREQ_10M
help
Minimum CPU frequency to use for dynamic frequency scaling.
Should be set to XTAL frequency or XTAL frequency divided by integer.
config EXAMPLE_MIN_CPU_FREQ_40M
bool "40 MHz (use with 40MHz XTAL)"
depends on ESP32_XTAL_FREQ_40 || ESP32_XTAL_FREQ_AUTO
config EXAMPLE_MIN_CPU_FREQ_20M
bool "20 MHz (use with 40MHz XTAL)"
depends on ESP32_XTAL_FREQ_40 || ESP32_XTAL_FREQ_AUTO
config EXAMPLE_MIN_CPU_FREQ_10M
bool "10 MHz (use with 40MHz XTAL)"
depends on ESP32_XTAL_FREQ_40 || ESP32_XTAL_FREQ_AUTO
config EXAMPLE_MIN_CPU_FREQ_26M
bool "26 MHz (use with 26MHz XTAL)"
depends on ESP32_XTAL_FREQ_26 || ESP32_XTAL_FREQ_AUTO
config EXAMPLE_MIN_CPU_FREQ_13M
bool "13 MHz (use with 26MHz XTAL)"
depends on ESP32_XTAL_FREQ_26 || ESP32_XTAL_FREQ_AUTO
endchoice
config EXAMPLE_MIN_CPU_FREQ_MHZ
int
default 40 if EXAMPLE_MIN_CPU_FREQ_40M
default 20 if EXAMPLE_MIN_CPU_FREQ_20M
default 10 if EXAMPLE_MIN_CPU_FREQ_10M
default 26 if EXAMPLE_MIN_CPU_FREQ_26M
default 13 if EXAMPLE_MIN_CPU_FREQ_13M
endmenu

11
examples/wifi/power_save/main/power_save.c
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@ -96,13 +96,12 @@ void app_main()
ESP_ERROR_CHECK( ret );
#if CONFIG_PM_ENABLE
// Configure dynamic frequency scaling: maximum frequency is set in sdkconfig,
// minimum frequency is XTAL.
rtc_cpu_freq_t max_freq;
rtc_clk_cpu_freq_from_mhz(CONFIG_ESP32_DEFAULT_CPU_FREQ_MHZ, &max_freq);
// Configure dynamic frequency scaling:
// maximum and minimum frequencies are set in sdkconfig,
// automatic light sleep is enabled if tickless idle support is enabled.
esp_pm_config_esp32_t pm_config = {
.max_cpu_freq = max_freq,
.min_cpu_freq = RTC_CPU_FREQ_XTAL,
.max_freq_mhz = CONFIG_EXAMPLE_MAX_CPU_FREQ_MHZ,
.min_freq_mhz = CONFIG_EXAMPLE_MIN_CPU_FREQ_MHZ,
#if CONFIG_FREERTOS_USE_TICKLESS_IDLE
.light_sleep_enable = true
#endif