ESP32 Wi-Fi driver support (#423)

* Add ESP-32 driver

* Resolve header issues

* Allow smaller blocks

* reset timeout can take 2s

* Documentation & style fixes

* quick JSON update

* Augh fix style again

* Astyle you are trippin

---------

Co-authored-by: Chris Snow <[email protected]>

.github/workflows/docs.yaml

@@ -21,7 +21,7 @@ jobs:
 
     # Build the HTML documentation
     - name: Doxygen Action
-      uses: mattnotmitt/[email protected].5
+      uses: mattnotmitt/[email protected].8
       with:
           doxyfile-path: ./doxyfile_options
 

connectivity/drivers/wifi/CMakeLists.txt

@@ -36,3 +36,8 @@ if("COMPONENT_ESPRESSIF_ESP8266=1" IN_LIST MBED_TARGET_DEFINITIONS)
     add_subdirectory(COMPONENT_ESPRESSIF_ESP8266)
 endif()
 
+if("COMPONENT_ESPRESSIF_ESP32=1" IN_LIST MBED_TARGET_DEFINITIONS)
+	create_mbed_wifi_target()
+    add_subdirectory(COMPONENT_ESPRESSIF_ESP32)
+endif()
+

connectivity/drivers/wifi/COMPONENT_ESPRESSIF_ESP32/CMakeLists.txt

@@ -0,0 +1,28 @@
+# Copyright (c) 2020 ARM Limited. All rights reserved.
+# SPDX-License-Identifier: Apache-2.0
+
+target_sources(mbed-wifi
+    PRIVATE
+        ./ESP32Interface.cpp
+        ./ESP32InterfaceAP.cpp
+        ./ESP32Stack.cpp
+        ./ESP32/ESP32.cpp
+)
+
+target_include_directories(mbed-wifi
+    PUBLIC
+        ./
+        ./ESP32/
+)
+
+# Link override object file coming from static library anyway
+#
+# NOTE: This linker option is to pretend undefined symbol and won't cause
+#       undefined symbol error even though the override object file actually
+#       doesn't provide such symbol definition.
+if(${MBED_TOOLCHAIN} STREQUAL "GCC_ARM")
+    target_link_options(mbed-wifi
+            INTERFACE
+            LINKER:--undefined=LINK_ESP32INTERFACE_CPP
+    )
+endif()