esp-idf/components/esp32h2/Kconfig

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menu "ESP32H2-Specific"
visible if IDF_TARGET_ESP32H2
choice ESP32H2_DEFAULT_CPU_FREQ_MHZ
prompt "CPU frequency"
default ESP32H2_DEFAULT_CPU_FREQ_64 if IDF_ENV_FPGA
default ESP32H2_DEFAULT_CPU_FREQ_96 if !IDF_ENV_FPGA
help
CPU frequency to be set on application startup.
config ESP32H2_DEFAULT_CPU_FREQ_16
bool "16 MHz"
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depends on IDF_ENV_FPGA #ESP32H2-TODO: IDF-3786
config ESP32H2_DEFAULT_CPU_FREQ_32
bool "32 MHz"
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depends on IDF_ENV_FPGA #ESP32H2-TODO: IDF-3786
config ESP32H2_DEFAULT_CPU_FREQ_64
bool "64 MHz"
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depends on IDF_ENV_FPGA #ESP32H2-TODO: IDF-3786
config ESP32H2_DEFAULT_CPU_FREQ_96
bool "96 MHz"
depends on !IDF_ENV_FPGA
endchoice
config ESP32H2_DEFAULT_CPU_FREQ_MHZ
int
default 16 if ESP32H2_DEFAULT_CPU_FREQ_16
default 32 if ESP32H2_DEFAULT_CPU_FREQ_32
default 64 if ESP32H2_DEFAULT_CPU_FREQ_64
default 96 if ESP32H2_DEFAULT_CPU_FREQ_96
choice ESP32H2_REV_MIN
prompt "Minimum Supported ESP32-H2 Revision"
default ESP32H2_REV_MIN_0
help
Minimum revision that ESP-IDF would support.
Only supporting higher chip revisions can reduce binary size.
config ESP32H2_REV_MIN_0
bool "Rev 0"
endchoice
config ESP32H2_REV_MIN
int
default 0 if ESP32H2_REV_MIN_0
choice ESP32H2_TIME_SYSCALL
prompt "Timers used for gettimeofday function"
default ESP32H2_TIME_SYSCALL_USE_RTC_SYSTIMER
help
This setting defines which hardware timers are used to
implement 'gettimeofday' and 'time' functions in C library.
- If both high-resolution (systimer) and RTC timers are used, timekeeping will
continue in deep sleep. Time will be reported at 1 microsecond
resolution. This is the default, and the recommended option.
- If only high-resolution timer (systimer) is used, gettimeofday will
provide time at microsecond resolution.
Time will not be preserved when going into deep sleep mode.
- If only RTC timer is used, timekeeping will continue in
deep sleep, but time will be measured at 6.(6) microsecond
resolution. Also the gettimeofday function itself may take
longer to run.
- If no timers are used, gettimeofday and time functions
return -1 and set errno to ENOSYS.
- When RTC is used for timekeeping, two RTC_STORE registers are
used to keep time in deep sleep mode.
config ESP32H2_TIME_SYSCALL_USE_RTC_SYSTIMER
bool "RTC and high-resolution timer"
select ESP_TIME_FUNCS_USE_RTC_TIMER
select ESP_TIME_FUNCS_USE_ESP_TIMER
config ESP32H2_TIME_SYSCALL_USE_RTC
bool "RTC"
select ESP_TIME_FUNCS_USE_RTC_TIMER
config ESP32H2_TIME_SYSCALL_USE_SYSTIMER
bool "High-resolution timer"
select ESP_TIME_FUNCS_USE_ESP_TIMER
config ESP32H2_TIME_SYSCALL_USE_NONE
bool "None"
select ESP_TIME_FUNCS_USE_NONE
endchoice
choice ESP32H2_RTC_CLK_SRC
prompt "RTC clock source"
default ESP32H2_RTC_CLK_SRC_INT_RC
help
Choose which clock is used as RTC clock source.
config ESP32H2_RTC_CLK_SRC_INT_RC
bool "Internal 150kHz RC oscillator"
config ESP32H2_RTC_CLK_SRC_EXT_CRYS
bool "External 32kHz crystal"
select ESP_SYSTEM_RTC_EXT_XTAL
config ESP32H2_RTC_CLK_SRC_EXT_OSC
bool "External 32kHz oscillator at 32K_XP pin"
select ESP_SYSTEM_RTC_EXT_OSC
config ESP32H2_RTC_CLK_SRC_INT_8MD256
bool "Internal 8MHz oscillator, divided by 256 (~32kHz)"
endchoice
config ESP32H2_RTC_CLK_CAL_CYCLES
int "Number of cycles for RTC_SLOW_CLK calibration"
default 3000 if ESP32H2_RTC_CLK_SRC_EXT_CRYS || ESP32H2_RTC_CLK_SRC_EXT_OSC || ESP32H2_RTC_CLK_SRC_INT_8MD256
default 576 if ESP32H2_RTC_CLK_SRC_INT_RC
range 0 125000
help
When the startup code initializes RTC_SLOW_CLK, it can perform
calibration by comparing the RTC_SLOW_CLK frequency with main XTAL
frequency. This option sets the number of RTC_SLOW_CLK cycles measured
by the calibration routine. Higher numbers increase calibration
precision, which may be important for applications which spend a lot of
time in deep sleep. Lower numbers reduce startup time.
When this option is set to 0, clock calibration will not be performed at
startup, and approximate clock frequencies will be assumed:
- 150000 Hz if internal RC oscillator is used as clock source. For this use value 1024.
- 32768 Hz if the 32k crystal oscillator is used. For this use value 3000 or more.
In case more value will help improve the definition of the launch of the crystal.
If the crystal could not start, it will be switched to internal RC.
config ESP32H2_LIGHTSLEEP_GPIO_RESET_WORKAROUND
bool "light sleep GPIO reset workaround"
default y
select PM_SLP_DISABLE_GPIO if FREERTOS_USE_TICKLESS_IDLE
help
ESP32H2 will reset at wake-up if GPIO is received a small electrostatic pulse during
light sleep, with specific condition
- GPIO needs to be configured as input-mode only
- The pin receives a small electrostatic pulse, and reset occurs when the pulse
voltage is higher than 6 V
For GPIO set to input mode only, it is not a good practice to leave it open/floating,
The hardware design needs to controlled it with determined supply or ground voltage
is necessary.
This option provides a software workaround for this issue. Configure to isolate all
GPIO pins in sleep state.
endmenu # ESP32H2-Specific