esp-idf/components/esp32/Kconfig

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menu "ESP32-specific config"
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choice ESP32_DEFAULT_CPU_FREQ_MHZ
prompt "CPU frequency"
default ESP32_DEFAULT_CPU_FREQ_240
help
CPU frequency to be set on application startup.
config ESP32_DEFAULT_CPU_FREQ_80
bool "80 MHz"
config ESP32_DEFAULT_CPU_FREQ_160
bool "160 MHz"
config ESP32_DEFAULT_CPU_FREQ_240
bool "240 MHz"
endchoice
config ESP32_DEFAULT_CPU_FREQ_MHZ
int
default 80 if ESP32_DEFAULT_CPU_FREQ_80
default 160 if ESP32_DEFAULT_CPU_FREQ_160
default 240 if ESP32_DEFAULT_CPU_FREQ_240
choice ESP32_WIFI_OR_BT
prompt "Select stack to enable (WiFi or BT)"
default ESP32_ENABLE_WIFI
help
Temporarily, WiFi and BT stacks can not be used at the same time.
Select which stack to enable.
config ESP32_ENABLE_STACK_WIFI
bool "WiFi"
select WIFI_ENABLED if ESP32_ENABLE_STACK_WIFI
config ESP32_ENABLE_STACK_BT
bool "BT"
select MEMMAP_BT if ESP32_ENABLE_STACK_BT
select BT_ENABLED if ESP32_ENABLE_STACK_BT
config ESP32_ENABLE_STACK_NONE
bool "None"
endchoice
config MEMMAP_BT
bool
depends on ESP32_ENABLE_STACK_BT
help
The Bluetooth stack uses memory that cannot be used as generic memory anymore. This
reserves the space for that within the memory map of the compiled binary.
This option is required to enable BT stack.
Temporarily, this option is not compatible with WiFi stack.
config MEMMAP_SMP
bool "Reserve memory for two cores"
default "y"
help
The ESP32 contains two cores. If you plan to only use one, you can disable this item
to save some memory. (ToDo: Make this automatically depend on unicore support)
config MEMMAP_TRACEMEM
bool "Use TRAX tracing feature"
default "n"
help
The ESP32 contains a feature which allows you to trace the execution path the processor
has taken through the program. This is stored in a chunk of 32K (16K for single-processor)
of memory that can't be used for general purposes anymore. Disable this if you do not know
what this is.
# Memory to reverse for trace, used in linker script
config TRACEMEM_RESERVE_DRAM
hex
default 0x8000 if MEMMAP_TRACEMEM
default 0x0
config MEMMAP_SPISRAM
bool "Use external SPI SRAM chip as main memory"
default "n"
help
The ESP32 can control an external SPI SRAM chip, adding the memory it contains to the
main memory map. Enable this if you have this hardware and want to use it in the same
way as on-chip RAM.
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config WIFI_ENABLED
bool
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default "y"
depends on ESP32_ENABLE_STACK_WIFI
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help
This compiles in the low-level WiFi stack.
Temporarily, this option is not compatible with BT stack.
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config SYSTEM_EVENT_QUEUE_SIZE
int "System event queue size"
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default 32
help
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Config system event queue size in different application.
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config SYSTEM_EVENT_TASK_STACK_SIZE
int "Event loop task stack size"
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default 2048
help
Config system event task stack size in different application.
config MAIN_TASK_STACK_SIZE
int "Main task stack size"
default 4096
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help
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Config system event task stack size in different application.
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config NEWLIB_STDOUT_ADDCR
bool "Standard-out output adds carriage return before newline"
default y
help
Most people are used to end their printf strings with a newline. If this
is sent as is to the serial port, most terminal programs will only move the
cursor one line down, not also move it to the beginning of the line. This
is usually done by an added CR character. Enabling this will make the
standard output code automatically add a CR character before a LF.
config ULP_COPROC_ENABLED
bool "Enable Ultra Low Power (ULP) Coprocessor"
default "n"
help
Set to 'y' if you plan to load a firmware for the coprocessor.
If this option is enabled, further coprocessor configuration will appear in the Components menu.
config ULP_COPROC_RESERVE_MEM
int "RTC slow memory reserved for coprocessor"
default 512
range 32 8192
depends on ULP_COPROC_ENABLED
help
Bytes of memory to reserve for ULP coprocessor firmware & data.
Data is reserved at the beginning of RTC slow memory.
# Set CONFIG_ULP_COPROC_RESERVE_MEM to 0 if ULP is disabled
config ULP_COPROC_RESERVE_MEM
int
default 0
depends on !ULP_COPROC_ENABLED
menu "Watchdogs & brown-out detection"
config INT_WDT
bool "Interrupt watchdog"
default y
help
This watchdog timer can detect if the FreeRTOS tick interrupt has not been called for a certain time,
either because a task turned off interrupts and did not turn them on for a long time, or because an
interrupt handler did not return. It will try to invoke the panic handler first and failing that
reset the SoC.
config INT_WDT_TIMEOUT_MS
int "Interrupt watchdog timeout (ms)"
depends on INT_WDT
default 10
range INT_WDT_TIMEOUT_MIN 10000
help
The timeout of the watchdog, in miliseconds. Make this higher than the FreeRTOS tick rate.
config TASK_WDT
bool "Task watchdog"
default y
help
This watchdog timer can be used to make sure individual tasks are still running.
config TASK_WDT_PANIC
bool "Invoke panic handler when Task Watchdog is triggered"
depends on TASK_WDT
default n
help
Normally, the Task Watchdog will only print out a warning if it detects it has not
been fed. If this is enabled, it will invoke the panic handler instead, which
can then halt or reboot the chip.
config TASK_WDT_TIMEOUT_S
int "Task watchdog timeout (seconds)"
depends on TASK_WDT
range 1 60
default 5
help
Timeout for the task WDT, in seconds.
config TASK_WDT_CHECK_IDLE_TASK
bool "Task watchdog watches idle tasks"
depends on TASK_WDT
default y
help
With this turned on, the task WDT can detect if the idle task is not called within the task
watchdog timeout period. The idle task not being called usually is a symptom of another
task hoarding the CPU. It is also a bad thing because FreeRTOS household tasks depend on the
idle task getting some runtime every now and then.
config BROWNOUT_DET
bool "Hardware brownout detect & reset"
default y
help
The ESP32 has a built-in brownout detector which can detect if the voltage is lower than
a specific value. If this happens, it will reset the chip in order to prevent unintended
behaviour.
choice BROWNOUT_DET_LVL_SEL
prompt "Brownout voltage level"
depends on BROWNOUT_DET
default BROWNOUT_DET_LVL_SEL_25
help
The brownout detector will reset the chip when the supply voltage is below this level.
config BROWNOUT_DET_LVL_SEL_0
bool "2.1V"
config BROWNOUT_DET_LVL_SEL_1
bool "2.2V"
config BROWNOUT_DET_LVL_SEL_2
bool "2.3V"
config BROWNOUT_DET_LVL_SEL_3
bool "2.4V"
config BROWNOUT_DET_LVL_SEL_4
bool "2.5V"
config BROWNOUT_DET_LVL_SEL_5
bool "2.6V"
config BROWNOUT_DET_LVL_SEL_6
bool "2.7V"
config BROWNOUT_DET_LVL_SEL_7
bool "2.8V"
endchoice
config BROWNOUT_DET_LVL
int
default 0 if BROWNOUT_DET_LVL_SEL_0
default 1 if BROWNOUT_DET_LVL_SEL_1
default 2 if BROWNOUT_DET_LVL_SEL_2
default 3 if BROWNOUT_DET_LVL_SEL_3
default 4 if BROWNOUT_DET_LVL_SEL_4
default 5 if BROWNOUT_DET_LVL_SEL_5
default 6 if BROWNOUT_DET_LVL_SEL_6
default 7 if BROWNOUT_DET_LVL_SEL_7
config BROWNOUT_DET_RESETDELAY
int "Brownout reset delay (in uS)"
depends on BROWNOUT_DET
range 0 6820
default 1000
help
The brownout detector can reset the chip after a certain delay, in order to make sure e.g. a voltage dip has entirely passed
before trying to restart the chip. You can set the delay here.
endmenu
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endmenu