add additional vscode extensions

Author: ryanwinter

.devcontainer/devcontainer.json

@@ -2,9 +2,11 @@
 {
     "dockerfile": "Dockerfile",
     "extensions": [
+        "ms-vscode.cpptools",
         "ms-vscode.cmake-tools",
         "marus25.cortex-debug",
-        "xaver.clang-format"
+        "vsciot-vscode.vscode-iot-workbench",
+        "xaver.clang-format",
     ],
 	"remoteUser": "vscode",
     "postCreateCommand": "git submodule update --recursive --init",

STMicroelectronics/STM32L4_L4+/STM32L4plus.code-workspace

@@ -5,6 +5,9 @@
         }
     ],
     "settings": {
-        "git.ignoreLimitWarning": true
+        "git.ignoreLimitWarning": true,
+        "git.autofetch": true,
+        "cmake.configureOnOpen": true,
+        "C_Cpp.default.configurationProvider": "ms-vscode.cmake-tools"
     }
 }

cmake/arm-gcc-toolchain.cmake

@@ -47,8 +47,8 @@ endif()
 # perform compiler test with the static library
 set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)
 
-set(CMAKE_C_COMPILER    ${ARM_TOOLCHAIN_PATH}/${TARGET_TRIPLET}gcc${TOOLCHAIN_EXT})
-set(CMAKE_CXX_COMPILER  ${ARM_TOOLCHAIN_PATH}/${TARGET_TRIPLET}g++${TOOLCHAIN_EXT})
+set(CMAKE_C_COMPILER    ${ARM_TOOLCHAIN_PATH}/${TARGET_TRIPLET}gcc${TOOLCHAIN_EXT} CACHE STRING "")
+set(CMAKE_CXX_COMPILER  ${ARM_TOOLCHAIN_PATH}/${TARGET_TRIPLET}g++${TOOLCHAIN_EXT} CACHE STRING "")
 set(CMAKE_ASM_COMPILER  ${ARM_TOOLCHAIN_PATH}/${TARGET_TRIPLET}gcc${TOOLCHAIN_EXT})
 set(CMAKE_LINKER        ${ARM_TOOLCHAIN_PATH}/${TARGET_TRIPLET}gcc${TOOLCHAIN_EXT})
 set(CMAKE_SIZE_UTIL     ${ARM_TOOLCHAIN_PATH}/${TARGET_TRIPLET}size${TOOLCHAIN_EXT})