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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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53
examples/wifi/power_save/main/Kconfig.projbuild
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@@ -40,4 +40,57 @@ config POWER_SAVE_MAX_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
View File

@@ -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