1  menu "ESP System Settings"
 2  
 3      choice ESP_SYSTEM_PANIC
 4          prompt "Panic handler behaviour"
 5          default ESP_SYSTEM_PANIC_PRINT_REBOOT
 6          help
 7              If FreeRTOS detects unexpected behaviour or an unhandled exception, the panic handler is
 8              invoked. Configure the panic handler's action here.
 9  
10          config ESP_SYSTEM_PANIC_PRINT_HALT
11              bool "Print registers and halt"
12              help
13                  Outputs the relevant registers over the serial port and halt the
14                  processor. Needs a manual reset to restart.
15  
16          config ESP_SYSTEM_PANIC_PRINT_REBOOT
17              bool "Print registers and reboot"
18              help
19                  Outputs the relevant registers over the serial port and immediately
20                  reset the processor.
21  
22          config ESP_SYSTEM_PANIC_SILENT_REBOOT
23              bool "Silent reboot"
24              help
25                  Just resets the processor without outputting anything
26  
27          config ESP_SYSTEM_PANIC_GDBSTUB
28              bool "Invoke GDBStub"
29              select ESP_GDBSTUB_ENABLED
30              help
31                  Invoke gdbstub on the serial port, allowing for gdb to attach to it to do a postmortem
32                  of the crash.
33      endchoice
34  
35      config ESP_SYSTEM_SINGLE_CORE_MODE
36          bool
37          default n
38          help
39              Only initialize and use the main core.
40  
41      config ESP_SYSTEM_RTC_EXT_XTAL
42          # This is a High Layer Kconfig option, invisible, can be selected by other Kconfig option
43          # e.g. It will be selected on when ESP32_RTC_CLK_SRC_EXT_CRYS is on
44          bool
45          default n
46  
47      config ESP_SYSTEM_RTC_EXT_XTAL_BOOTSTRAP_CYCLES
48          int "Bootstrap cycles for external 32kHz crystal"
49          depends on ESP_SYSTEM_RTC_EXT_XTAL
50          default 5 if IDF_TARGET_ESP32
51          default 0
52          range 0 32768
53          help
54              To reduce the startup time of an external RTC crystal,
55              we bootstrap it with a 32kHz square wave for a fixed number of cycles.
56              Setting 0 will disable bootstrapping (if disabled, the crystal may take
57              longer to start up or fail to oscillate under some conditions).
58  
59              If this value is too high, a faulty crystal may initially start and then fail.
60              If this value is too low, an otherwise good crystal may not start.
61  
62              To accurately determine if the crystal has started,
63              set a larger "Number of cycles for RTC_SLOW_CLK calibration" (about 3000).
64  
65  endmenu  # ESP System Settings