Kconfig: use 4 spaces to instead 1 tab

In some Kconfig file, both 4 spaces and 1 tab are used mix, let's just
use 4 space, it will be clean in some editor.

Kconfig

@@ -7,18 +7,18 @@ mainmenu "Espressif IoT Development Framework Configuration"
 
 menu "SDK tool configuration"
 config TOOLPREFIX
-	string "Compiler toolchain path/prefix"
+    string "Compiler toolchain path/prefix"
-	default "xtensa-esp32-elf-"
+    default "xtensa-esp32-elf-"
-	help
+    help
-		The prefix/path that is used to call the toolchain. The default setting assumes
+        The prefix/path that is used to call the toolchain. The default setting assumes
-		a crosstool-ng gcc setup that is in your PATH.
+        a crosstool-ng gcc setup that is in your PATH.
 
 config PYTHON
     string "Python 2 interpreter"
-	default "python"
+    default "python"
-	help
+    help
-	    The executable name/path that is used to run python. On some systems Python 2.x
+        The executable name/path that is used to run python. On some systems Python 2.x
-		may need to be invoked as python2.
+        may need to be invoked as python2.
 endmenu
 
 source "$COMPONENT_KCONFIGS_PROJBUILD"

components/bt/Kconfig

@@ -3,27 +3,27 @@ visible if MEMMAP_BT
 
 
 config BT_ENABLED
-	bool
+    bool
-	depends on ESP32_ENABLE_STACK_BT
+    depends on ESP32_ENABLE_STACK_BT
-	help
+    help
-		This compiles in the low-level BT stack.
+        This compiles in the low-level BT stack.
 
 #config BT_BTLE
-#	bool "Enable BTLE"
+#    bool "Enable BTLE"
-#	depends on BT_ENABLED
+#    depends on BT_ENABLED
-#	help
+#    help
-#		This compiles BTLE support
+#        This compiles BTLE support
 #
 #config BT_BT
-#	bool "Enable classic BT"
+#    bool "Enable classic BT"
-#	depends on BT_ENABLED
+#    depends on BT_ENABLED
-#	help
+#    help
-#		This enables classic BT support
+#        This enables classic BT support
 
 endmenu
 
 # Memory reserved at start of DRAM for Bluetooth stack
 config BT_RESERVE_DRAM
     hex
-	default 0x10000 if MEMMAP_BT
+    default 0x10000 if MEMMAP_BT
-	default 0
+    default 0

components/esp32/Kconfig

@@ -84,7 +84,7 @@ config WIFI_ENABLED
     help
         This compiles in the low-level WiFi stack.
 
-		Temporarily, this option is not compatible with BT stack.
+        Temporarily, this option is not compatible with BT stack.
 
 config SYSTEM_EVENT_QUEUE_SIZE
     int "System event queue size"
@@ -107,37 +107,37 @@ config MAIN_TASK_STACK_SIZE
 
 
 config NEWLIB_STDOUT_ADDCR
-	bool "Standard-out output adds carriage return before newline"
+    bool "Standard-out output adds carriage return before newline"
-	default y
+    default y
-	help
+    help
-		Most people are used to end their printf strings with a newline. If this
+        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
+        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
+        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
+        is usually done by an added CR character. Enabling this will make the
-		standard output code automatically add a CR character before a LF.
+        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.
+        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.
+        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"
+    int "RTC slow memory reserved for coprocessor"
-	default 512
+    default 512
-	range 32 8192
+    range 32 8192
-	depends on ULP_COPROC_ENABLED
+    depends on ULP_COPROC_ENABLED
-	help
+    help
-		Bytes of memory to reserve for ULP coprocessor firmware & data.
+        Bytes of memory to reserve for ULP coprocessor firmware & data.
 
-		Data is reserved at the beginning of RTC slow memory.
+        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
+    int
-	default 0
+    default 0
-	depends on !ULP_COPROC_ENABLED
+    depends on !ULP_COPROC_ENABLED
 
 endmenu

components/freertos/Kconfig

@@ -2,192 +2,192 @@ menu "FreeRTOS"
 
 # This is actually also handled in the ESP32 startup code, not only in FreeRTOS.
 config FREERTOS_UNICORE
-	bool "Run FreeRTOS only on first core"
+    bool "Run FreeRTOS only on first core"
-	default n
+    default n
-	help
+    help
-		This version of FreeRTOS normally takes control of all cores of 
+        This version of FreeRTOS normally takes control of all cores of 
-		the CPU. Select this if you only want to start it on the first core.
+        the CPU. Select this if you only want to start it on the first core.
-		This is needed when e.g. another process needs complete control
+        This is needed when e.g. another process needs complete control
-		over the second core.
+        over the second core.
 
 
 choice FREERTOS_CORETIMER
-	prompt "Xtensa timer to use as the FreeRTOS tick source"
+    prompt "Xtensa timer to use as the FreeRTOS tick source"
-	default CONFIG_FREERTOS_CORETIMER_0
+    default CONFIG_FREERTOS_CORETIMER_0
-	help
+    help
-		FreeRTOS needs a timer with an associated interrupt to use as
+        FreeRTOS needs a timer with an associated interrupt to use as
-		the main tick source to increase counters, run timers and do
+        the main tick source to increase counters, run timers and do
-		pre-emptive multitasking with. There are multiple timers available
+        pre-emptive multitasking with. There are multiple timers available
-		to do this, with different interrupt priorities. Check 
+        to do this, with different interrupt priorities. Check 
 
 config FREERTOS_CORETIMER_0
-	bool "Timer 0 (int 6, level 1)"
+    bool "Timer 0 (int 6, level 1)"
-	help
+    help
-		Select this to use timer 0
+        Select this to use timer 0
 
 config FREERTOS_CORETIMER_1
-	bool "Timer 1 (int 15, level 3)"
+    bool "Timer 1 (int 15, level 3)"
-	help
+    help
-		Select this to use timer 1
+        Select this to use timer 1
 
 config FREERTOS_CORETIMER_2
-	bool "Timer 2 (int 16, level 5)"
+    bool "Timer 2 (int 16, level 5)"
-	help
+    help
-		Select this to use timer 2
+        Select this to use timer 2
 
 endchoice
 
 config FREERTOS_HZ
-	int "Tick rate (Hz)"
+    int "Tick rate (Hz)"
-	range 1 10000
+    range 1 10000
-	default 100
+    default 100
-	help
+    help
-		Select the tick rate at which FreeRTOS does pre-emptive context switching.
+        Select the tick rate at which FreeRTOS does pre-emptive context switching.
 
 choice FREERTOS_CHECK_STACKOVERFLOW
-	prompt "Check for stack overflow"
+    prompt "Check for stack overflow"
-	default FREERTOS_CHECK_STACKOVERFLOW_QUICK
+    default FREERTOS_CHECK_STACKOVERFLOW_QUICK
-	help
+    help
-		FreeRTOS can check for stack overflows in threads and trigger an user function
+        FreeRTOS can check for stack overflows in threads and trigger an user function
-		called vApplicationStackOverflowHook when this happens.
+        called vApplicationStackOverflowHook when this happens.
 
 config FREERTOS_CHECK_STACKOVERFLOW_NONE
-	bool "No checking"
+    bool "No checking"
-	help
+    help
-		Do not check for stack overflows (configCHECK_FOR_STACK_OVERFLOW=0)
+        Do not check for stack overflows (configCHECK_FOR_STACK_OVERFLOW=0)
 
 config FREERTOS_CHECK_STACKOVERFLOW_PTRVAL
-	bool "Check by stack pointer value"
+    bool "Check by stack pointer value"
-	help
+    help
-		Check for stack overflows on each context switch by checking if
+        Check for stack overflows on each context switch by checking if
-		the stack pointer is in a valid range. Quick but does not detect
+        the stack pointer is in a valid range. Quick but does not detect
-		stack overflows that happened between context switches
+        stack overflows that happened between context switches
-		(configCHECK_FOR_STACK_OVERFLOW=1)
+        (configCHECK_FOR_STACK_OVERFLOW=1)
 
 config FREERTOS_CHECK_STACKOVERFLOW_CANARY
-	bool "Check using canary bytes"
+    bool "Check using canary bytes"
-	help
+    help
-		Places some magic bytes at the end of the stack area and on each 
+        Places some magic bytes at the end of the stack area and on each 
-		context switch, check if these bytes are still intact. More thorough
+        context switch, check if these bytes are still intact. More thorough
-		than just checking the pointer, but also slightly slower.
+        than just checking the pointer, but also slightly slower.
-		(configCHECK_FOR_STACK_OVERFLOW=2)
+        (configCHECK_FOR_STACK_OVERFLOW=2)
 endchoice
 
 config FREERTOS_THREAD_LOCAL_STORAGE_POINTERS
-	int "Amount of thread local storage pointers"
+    int "Amount of thread local storage pointers"
-	range 0 256 if !WIFI_ENABLED
+    range 0 256 if !WIFI_ENABLED
-	range 1 256 if WIFI_ENABLED
+    range 1 256 if WIFI_ENABLED
-	default 1
+    default 1
-	help
+    help
-		FreeRTOS has the ability to store per-thread pointers in the task
+        FreeRTOS has the ability to store per-thread pointers in the task
-		control block. This controls the amount of pointers available;
+        control block. This controls the amount of pointers available;
-		0 turns off this functionality.
+        0 turns off this functionality.
 
-		If using the WiFi stack, this value must be at least 1.
+        If using the WiFi stack, this value must be at least 1.
 
 #This still needs to be implemented.
 choice FREERTOS_PANIC
-	prompt "Panic handler behaviour"
+    prompt "Panic handler behaviour"
-	default FREERTOS_PANIC_PRINT_REBOOT
+    default FREERTOS_PANIC_PRINT_REBOOT
-	help
+    help
-		If FreeRTOS detects unexpected behaviour or an unhandled exception, the panic handler is 
+        If FreeRTOS detects unexpected behaviour or an unhandled exception, the panic handler is 
-		invoked. Configure the panic handlers action here.
+        invoked. Configure the panic handlers action here.
 
 config FREERTOS_PANIC_PRINT_HALT
-	bool "Print registers and halt"
+    bool "Print registers and halt"
-	help
+    help
-		Outputs the relevant registers over the serial port and halt the 
+        Outputs the relevant registers over the serial port and halt the 
-		processor. Needs a manual reset to restart.
+        processor. Needs a manual reset to restart.
 
 config FREERTOS_PANIC_PRINT_REBOOT
-	bool "Print registers and reboot"
+    bool "Print registers and reboot"
-	help
+    help
-		Outputs the relevant registers over the serial port and immediately
+        Outputs the relevant registers over the serial port and immediately
-		reset the processor.
+        reset the processor.
 
 config FREERTOS_PANIC_SILENT_REBOOT
-	bool "Silent reboot"
+    bool "Silent reboot"
-	help
+    help
-		Just resets the processor without outputting anything
+        Just resets the processor without outputting anything
 
 config FREERTOS_PANIC_GDBSTUB
-	bool "Invoke GDBStub"
+    bool "Invoke GDBStub"
-	help
+    help
-		Invoke gdbstub on the serial port, allowing for gdb to attach to it to do a postmortem
+        Invoke gdbstub on the serial port, allowing for gdb to attach to it to do a postmortem
-		of the crash.
+        of the crash.
 endchoice
 
 config FREERTOS_DEBUG_OCDAWARE
-	bool "Make exception and panic handlers JTAG/OCD aware"
+    bool "Make exception and panic handlers JTAG/OCD aware"
-	default y
+    default y
-	help
+    help
-		The FreeRTOS panic and unhandled exception handers can detect a JTAG OCD debugger and
+        The FreeRTOS panic and unhandled exception handers can detect a JTAG OCD debugger and
-		instead of panicking, have the debugger stop on the offending instruction.
+        instead of panicking, have the debugger stop on the offending instruction.
 
 choice FREERTOS_ASSERT
-	prompt "FreeRTOS assertions"
+    prompt "FreeRTOS assertions"
-	default FREERTOS_ASSERT_FAIL_ABORT
+    default FREERTOS_ASSERT_FAIL_ABORT
-	help
+    help
-		Failed FreeRTOS configASSERT() assertions can be configured to
+        Failed FreeRTOS configASSERT() assertions can be configured to
-		behave in different ways.
+        behave in different ways.
 
 config FREERTOS_ASSERT_FAIL_ABORT
-	bool "abort() on failed assertions"
+    bool "abort() on failed assertions"
-	help
+    help
-		If a FreeRTOS configASSERT() fails, FreeRTOS will abort() and
+        If a FreeRTOS configASSERT() fails, FreeRTOS will abort() and
-		halt execution. The panic handler can be configured to handle
+        halt execution. The panic handler can be configured to handle
-		the outcome of an abort() in different ways.
+        the outcome of an abort() in different ways.
 
 config FREERTOS_ASSERT_FAIL_PRINT_CONTINUE
-	bool "Print and continue failed assertions"
+    bool "Print and continue failed assertions"
-	help
+    help
-		If a FreeRTOS assertion fails, print it out and continue.
+        If a FreeRTOS assertion fails, print it out and continue.
 
 config FREERTOS_ASSERT_DISABLE
-	bool "Disable FreeRTOS assertions"
+    bool "Disable FreeRTOS assertions"
-	help
+    help
-		FreeRTOS configASSERT() will not be compiled into the binary.
+        FreeRTOS configASSERT() will not be compiled into the binary.
 
 endchoice
 
 config FREERTOS_BREAK_ON_SCHEDULER_START_JTAG
-	bool "Stop program on scheduler start when JTAG/OCD is detected"
+    bool "Stop program on scheduler start when JTAG/OCD is detected"
-	depends on FREERTOS_DEBUG_OCDAWARE
+    depends on FREERTOS_DEBUG_OCDAWARE
-	default y
+    default y
-	help
+    help
-		If JTAG/OCD is connected, stop execution when the scheduler is started and the first
+        If JTAG/OCD is connected, stop execution when the scheduler is started and the first
-		task is executed.
+        task is executed.
 
 menuconfig ENABLE_MEMORY_DEBUG
-	bool "Enable heap memory debug"
+    bool "Enable heap memory debug"
-	default n
+    default n
-	help
+    help
-		Enable this option to show malloc heap block and memory crash detect
+        Enable this option to show malloc heap block and memory crash detect
 
 menuconfig FREERTOS_DEBUG_INTERNALS
-	bool "Debug FreeRTOS internals"
+    bool "Debug FreeRTOS internals"
-	default n
+    default n
-	help
+    help
-		Enable this option to show the menu with internal FreeRTOS debugging features.
+        Enable this option to show the menu with internal FreeRTOS debugging features.
-		This option does not change any code by itself, it just shows/hides some options.
+        This option does not change any code by itself, it just shows/hides some options.
 
 if FREERTOS_DEBUG_INTERNALS
 
 config FREERTOS_PORTMUX_DEBUG
-	bool "Debug portMUX portENTER_CRITICAL/portEXIT_CRITICAL"
+    bool "Debug portMUX portENTER_CRITICAL/portEXIT_CRITICAL"
-	depends on FREERTOS_DEBUG_INTERNALS
+    depends on FREERTOS_DEBUG_INTERNALS
-	default n
+    default n
-	help
+    help
-		If enabled, debug information (including integrity checks) will be printed
+        If enabled, debug information (including integrity checks) will be printed
-	 	to UART for the port-specific MUX implementation.
+        to UART for the port-specific MUX implementation.
 
 config FREERTOS_PORTMUX_DEBUG_RECURSIVE
-	bool "Debug portMUX Recursion"
+    bool "Debug portMUX Recursion"
-	depends on FREERTOS_PORTMUX_DEBUG
+    depends on FREERTOS_PORTMUX_DEBUG
-	default n
+    default n
-	help
+    help
-		If enabled, additional debug information will be printed for recursive
+        If enabled, additional debug information will be printed for recursive
-		portMUX usage.
+        portMUX usage.
 
 endif # FREERTOS_DEBUG_INTERNALS
 

components/log/Kconfig

@@ -28,13 +28,13 @@ config LOG_DEFAULT_LEVEL_VERBOSE
 endchoice
 
 config LOG_DEFAULT_LEVEL
-	int
+    int
-	default 0 if LOG_DEFAULT_LEVEL_NONE
+    default 0 if LOG_DEFAULT_LEVEL_NONE
-	default 1 if LOG_DEFAULT_LEVEL_ERROR
+    default 1 if LOG_DEFAULT_LEVEL_ERROR
-	default 2 if LOG_DEFAULT_LEVEL_WARN
+    default 2 if LOG_DEFAULT_LEVEL_WARN
-	default 3 if LOG_DEFAULT_LEVEL_INFO
+    default 3 if LOG_DEFAULT_LEVEL_INFO
-	default 4 if LOG_DEFAULT_LEVEL_DEBUG
+    default 4 if LOG_DEFAULT_LEVEL_DEBUG
-	default 5 if LOG_DEFAULT_LEVEL_VERBOSE
+    default 5 if LOG_DEFAULT_LEVEL_VERBOSE
 
 config LOG_COLORS
    bool "Use ANSI terminal colors in log output"

components/lwip/Kconfig

@@ -1,27 +1,27 @@
 menu "LWIP"
 
 config LWIP_MAX_SOCKETS
-	int "Max number of open sockets"
+    int "Max number of open sockets"
-	range 1 16
+    range 1 16
-	default 4
+    default 4
-	help
+    help
-		Sockets take up a certain amount of memory, and allowing fewer
+        Sockets take up a certain amount of memory, and allowing fewer
-		sockets to be open at the same time conserves memory. Specify
+        sockets to be open at the same time conserves memory. Specify
-		the maximum amount of sockets here.
+        the maximum amount of sockets here.
 
 config LWIP_THREAD_LOCAL_STORAGE_INDEX
-	int "Index for thread-local-storage pointer for lwip"
+    int "Index for thread-local-storage pointer for lwip"
-	default 0
+    default 0
-	help
+    help
-		Specify the thread-local-storage-pointer index for lwip
+        Specify the thread-local-storage-pointer index for lwip
-		use.
+        use.
 
 config LWIP_SO_REUSE
-	bool "Enable SO_REUSEADDR option"
+    bool "Enable SO_REUSEADDR option"
-	default 0
+    default 0
-	help
+    help
-		Enabling this option allows binding to a port which remains in 
+        Enabling this option allows binding to a port which remains in
-		TIME_WAIT.
+        TIME_WAIT.
 
 endmenu
 

components/mbedtls/Kconfig

@@ -2,7 +2,7 @@ menu "mbedTLS"
 
 config MBEDTLS_SSL_MAX_CONTENT_LEN
     int "TLS maximum message content length"
-	default 16384
+    default 16384
     range 512 16384
     help
         Maximum TLS message length (in bytes) supported by mbedTLS.

components/spi_flash/Kconfig

@@ -1,15 +1,15 @@
 menu "SPI Flash driver"
 
 config SPI_FLASH_ENABLE_COUNTERS
-	bool "Enable operation counters"
+    bool "Enable operation counters"
-	default 0
+    default 0
-	help
+    help
-		This option enables the following APIs:
+        This option enables the following APIs:
-			spi_flash_reset_counters 
+            spi_flash_reset_counters
-			spi_flash_dump_counters
+            spi_flash_dump_counters
-			spi_flash_get_counters
+            spi_flash_get_counters
-		These APIs may be used to collect performance data for spi_flash APIs 
+        These APIs may be used to collect performance data for spi_flash APIs
-		and to help understand behaviour of libraries which use SPI flash.
+        and to help understand behaviour of libraries which use SPI flash.
 
 endmenu