Add Kconfig support (#2374)

Type `make manuconfig` in your Sming based application to see the available options. 
You might need to run `make python-requirements` before that if you are missing the required python libraries.
Sample `Basic_IFS` provides an example how to add application specific configuration settings.

Sming/Arch/Esp32/Components/esp32/sdk/config/debug

@@ -3,9 +3,21 @@
 #
 
 # The bootloader logs all type of messages
+CONFIG_BOOTLOADER_LOG_LEVEL_NONE=
+CONFIG_BOOTLOADER_LOG_LEVEL_ERROR=
+CONFIG_BOOTLOADER_LOG_LEVEL_WARN=
+CONFIG_BOOTLOADER_LOG_LEVEL_INFO=y
+CONFIG_BOOTLOADER_LOG_LEVEL_DEBUG=
+CONFIG_BOOTLOADER_LOG_LEVEL_VERBOSE=
 CONFIG_BOOTLOADER_LOG_LEVEL=3
 
 # ESP-IDF logs all type of messages
+CONFIG_LOG_DEFAULT_LEVEL_NONE=
+CONFIG_LOG_DEFAULT_LEVEL_ERROR=
+CONFIG_LOG_DEFAULT_LEVEL_WARN=
+CONFIG_LOG_DEFAULT_LEVEL_INFO=y
+CONFIG_LOG_DEFAULT_LEVEL_DEBUG=
+CONFIG_LOG_DEFAULT_LEVEL_VERBOSE=
 CONFIG_LOG_DEFAULT_LEVEL=3
 
 # Sets watchpoint index 1 (the second of two) at the end of any task stack. This is the most accurate way to debug task stack overflows.

Sming/Arch/Esp32/Components/esp32/sdk/config/release

@@ -3,8 +3,20 @@
 #
 
 # The bootloader logs only errors
+CONFIG_BOOTLOADER_LOG_LEVEL_NONE=
+CONFIG_BOOTLOADER_LOG_LEVEL_ERROR=y
+CONFIG_BOOTLOADER_LOG_LEVEL_WARN=
+CONFIG_BOOTLOADER_LOG_LEVEL_INFO=
+CONFIG_BOOTLOADER_LOG_LEVEL_DEBUG=
+CONFIG_BOOTLOADER_LOG_LEVEL_VERBOSE=
 CONFIG_BOOTLOADER_LOG_LEVEL=1
 
 # ESP-IDF logs only errors
+CONFIG_LOG_DEFAULT_LEVEL_NONE=
+CONFIG_LOG_DEFAULT_LEVEL_ERROR=y
+CONFIG_LOG_DEFAULT_LEVEL_WARN=
+CONFIG_LOG_DEFAULT_LEVEL_INFO=
+CONFIG_LOG_DEFAULT_LEVEL_DEBUG=
+CONFIG_LOG_DEFAULT_LEVEL_VERBOSE=
 CONFIG_LOG_DEFAULT_LEVEL=1
 

Sming/Arch/Esp8266/Components/driver/Kconfig

@@ -0,0 +1,22 @@
+menu "Drivers"
+    config USE_US_TIMER
+        bool "Enable microsecond precision for software timers (Timer2)"
+        help
+            The following functions depend on Timer2:
+            - NOW() return value, the Timer2 tick count
+            - Software timers
+            - System time
+
+            Software timers are driven by Timer2, which by default uses a /256 prescale
+            providing a resolution of 3.2us and a range of 1' 54".
+
+            Enabling this setting increases the resolution to 200ns but reduces the maximum
+            software timer to 7" 9.5s.
+
+    config ENABLE_CUSTOM_PWM
+        bool "Use the *New PWM* driver"
+        default y
+        help
+            New PWM is a drop-in replacement for the version provided in the Espressif SDK.
+
+endmenu

Sming/Arch/Esp8266/Components/heap/Kconfig

@@ -0,0 +1,20 @@
+menu "Heap"
+    config ENABLE_CUSTOM_HEAP
+        bool "Enable custom heap using UMM Malloc"
+
+    if ENABLE_CUSTOM_HEAP
+
+        config UMM_POISON_CHECK
+            bool "UMM Poison Check"
+            help
+                Add heap integrity checks
+
+        config UMM_FUNC_IRAM
+            bool "Store custom heap functions in IRAM"
+            default y
+            help
+                Custom heap functions are stored in IRAM by default for performance reasons.
+                If you need the IRAM (about 1.5K bytes) then disable this option.
+
+    endif
+endmenu

Sming/Components/Hosted/Kconfig

@@ -0,0 +1,37 @@
+menu "Hosted"
+    choice
+        depends on SMING_ARCH="Host"
+        default ENABLE_HOSTED_NONE
+        prompt "Hosted transport mechanism"
+        config ENABLE_HOSTED_NONE
+            bool "None"
+        config ENABLE_HOSTED_TCP
+            bool "TCP"
+        config ENABLE_HOSTED_SERIAL
+            bool "Serial"
+    endchoice
+
+    config ENABLE_HOSTED
+        string
+        default "" if ENABLE_HOSTED_NONE
+        default "tcp" if ENABLE_HOSTED_TCP
+        default "serial" if ENABLE_HOSTED_SERIAL
+
+    if ENABLE_HOSTED="tcp"
+        config HOSTED_SERVER_IP
+            depends on ENABLE_HOSTED="tcp"
+            string "Remote RPC server IP address"
+            default "192.168.13.1"
+    endif
+
+    if ENABLE_HOSTED="serial"
+        config HOSTED_COM_PORT
+            string "COM port connected to remote RPC server"
+            default "$(COM_PORT)"
+
+        config HOSTED_COM_SPEED
+            int "Baud rate for hosted COM port"
+            default 115200
+    endif
+
+endmenu

Sming/Components/Hosted/samples/serial/README.rst

@@ -1,4 +1,4 @@
-Hosted RCP Server over Serial
+Hosted RPC Server over Serial
 =============================
 
 Overview

Sming/Components/Network/Kconfig

@@ -0,0 +1,53 @@
+menu "Network"
+    depends on !DISABLE_NETWORK
+
+    config DISABLE_WIFI
+        bool "Build without WiFi support"
+        default n
+        help
+            Keeps the core Network library but excludes WiFi code.
+            Applications using ethernet can use this to reduce code size.
+
+    if !DISABLE_WIFI
+        config WIFI_SSID
+            string "Default WiFi SSID"
+            depends on !DISABLE_WIFI
+
+        config WIFI_PWD
+            string "Default WiFi Passphrase"
+            depends on !DISABLE_WIFI
+
+        if SMING_ARCH=Esp8266
+            config ENABLE_WPS
+                bool "Enable WiFi Protected Setup (WPS)"
+                help
+                    WPS is not enabled by default to preserve resources, and because
+                    there may be security implications which you should consider carefully.
+
+            config ENABLE_SMART_CONFIG
+                bool "Enable WiFi Smart Configuration API"
+                help
+                    See :sample:`Basic_SmartConfig` sample application.
+        endif
+    endif
+
+    config HTTP_SERVER_EXPOSE_NAME
+        bool "Add \"HttpServer/Sming\" to the SERVER field in response headers"
+        default y
+        help
+               If disabled, the SERVER field is omitted from all responses.
+
+    config HTTP_SERVER_EXPOSE_VERSION
+        bool "Include Sming version in HTTP server headers"
+        depends on HTTP_SERVER_EXPOSE_NAME
+        help
+            Adds the current Sming build version to the SERVER field in response headers.
+            For example, "Sming/4.0.0-rc2".
+
+    config ENABLE_CUSTOM_LWIP
+        int "LWIP version (0 for SDK, 1 or 2)"
+        range 0 2
+        default 1
+        depends on SMING_ARCH=Esp8266
+
+endmenu

Sming/Components/Network/component.mk

@@ -19,6 +19,13 @@ COMPONENT_DEPENDS := \
 	mqtt-codec \
 	libyuarel
 
+# WiFi settings may be provide via Environment variables
+CONFIG_VARS				+= WIFI_SSID WIFI_PWD
+ifdef WIFI_SSID
+	APP_CFLAGS			+= -DWIFI_SSID=\"$(WIFI_SSID)\"
+	APP_CFLAGS			+= -DWIFI_PWD=\"$(WIFI_PWD)\"
+endif
+
 # => WPS
 COMPONENT_VARS			+= ENABLE_WPS
 ifeq ($(ENABLE_WPS), 1)

Sming/Components/esptool/Kconfig

@@ -0,0 +1,9 @@
+menu "esptool"
+   config COM_PORT_ESPTOOL
+      string "Port to use for flashing device"
+      default COM_PORT
+
+   config COM_SPEED_ESPTOOL
+      string "Baud rate to use for flashing device"
+      default COM_SPEED
+endmenu

Sming/Components/rboot/Kconfig

@@ -0,0 +1,22 @@
+menu "rBoot"
+    depends on SMING_ARCH = "Esp8266"
+
+    config RBOOT_RTC_ENABLED
+        bool "Enable extended boot information via RTC memory"
+
+    choice
+        prompt "GPIO boot behaviour"
+        default RBOOT_GPIO_DISABLED
+        config RBOOT_GPIO_DISABLED
+            bool "Disable GPIO features"
+        config RBOOT_GPIO_ENABLED
+            bool "Enable GPIO boot slot 2"
+            help
+                rBoot supports booting into a third slot upon explicit user request,
+                e.g. by pressing a button during reset/power up.
+                This is especially useful for implementing some sort of recovery mechanism.
+        config RBOOT_GPIO_SKIP_ENABLED
+            bool "Use GPIO to skip between boot roms"
+    endchoice
+
+endmenu

Sming/Components/ssl/Kconfig

@@ -0,0 +1,28 @@
+menu "SSL"
+	depends on !DISABLE_NETWORK
+
+	choice
+		default SELECT_SSL_NONE
+		prompt "SSL adapter"
+		config SELECT_SSL_NONE
+			bool "None"
+		config SELECT_SSL_DEFAULT
+			bool "Default (Axtls)"
+		config SELECT_SSL_AXTLS
+			bool "AXTLS"
+		config SELECT_SSL_BEARSSL
+			bool "Bear SSL"
+	endchoice
+
+	config ENABLE_SSL
+		string
+		default "0" if SELECT_SSL_NONE
+		default "1" if SELECT_SSL_DEFAULT
+		default "Axtls" if SELECT_SSL_AXTLS
+		default "Bearssl" if SELECT_SSL_BEARSSL
+
+	config SSL_DEBUG
+		depends on ENABLE_SSL != "0"
+		bool "Enable SSL debug"
+
+endmenu

Sming/Components/terminal/Kconfig

@@ -0,0 +1,33 @@
+menu "Terminal"
+
+   config COM_PORT
+      string "Default port for device communications"
+      help
+         Default value depends on the development platform being used.
+      default "/dev/cuaU0" if ("$UNAME" = "FreeBSD")
+      default "/dev/tty.usbserial" if "$UNAME" = "MacOS"
+      default "/dev/ttyUSB0" if "$UNAME" = "Linux"
+      default "COM3" if "$UNAME" = "Windows"
+
+   config COM_SPEED_SERIAL
+      int "Default baud rate to use for serial communication within application"
+      default COM_SPEED
+
+   config COM_OPTS
+      string "Additional options to pass to the terminal"
+      default "--raw --encoding ascii --rts 0 --dtr 0"
+
+   config TERMINAL
+      string "Command line to use when running `make terminal`"
+      help
+         Redefine if you want to use a different terminal application
+      default "powershell.exe -Command \"python -m serial.tools.miniterm $(COM_OPTS) $(COM_PORT) $(COM_SPEED_SERIAL)\"" if $WSL_ROOT
+      default "$(PYTHON) -m serial.tools.miniterm $(COM_OPTS) $(COM_PORT) $(COM_SPEED_SERIAL)" if !$WSL_ROOT
+
+   config KILL_TERM
+      string "Command line to use to kill the running terminal process"
+      help
+         If the terminal never runs in the background and the warnings annoy you, just clear it
+      default "pkill -9 -f \"$(COM_PORT) $(COM_SPEED_SERIAL)\" || exit 0"
+
+endmenu