3 files changed, 109 insertions, 2 deletions
diff --git a/cmake/mcu-stm32/CMakeLists.txt b/cmake/mcu-stm32/CMakeLists.txt
new file mode 100644
index 0000000..424d3ab
--- /dev/null
+++ b/cmake/mcu-stm32/CMakeLists.txt
@@ -0,0 +1,76 @@
+set(MCU_BASEDIR "${CMAKE_CURRENT_LIST_DIR}" CACHE INTERNAL "foo" FORCE)
+
+if (POLICY CMP0057)
+    cmake_policy(SET CMP0057 NEW)
+else ()
+    # We need IN_LIST
+    message(FATAL_ERROR "CMake 3.3+ is required")
+endif ()
+
+function(mcu_stm32_add_library)
+    set(options)
+    set(oneValueArgs TARGET DEVICE DEFAULT_ASSERT_PARAM DEFINES_VAR)
+    set(multiValueArgs PARTS)
+    cmake_parse_arguments(ARG "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
+
+    # TODO: validate the device
+
+    add_library(${ARG_TARGET}
+            ${STM32F10X_STDPERIPH_LIB}/Libraries/CMSIS/CM3/CoreSupport/core_cm3.c
+            ${STM32F10X_STDPERIPH_LIB}/Libraries/CMSIS/CM3/DeviceSupport/ST/STM32F10x/system_stm32f10x.c
+            ${STM32F10X_STDPERIPH_LIB}/Libraries/STM32F10x_StdPeriph_Driver/src/misc.c
+            ${STM32F10X_STDPERIPH_LIB}/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_rcc.c
+            )
+    list(REMOVE_ITEM ARG_PARTS RCC)
+
+    set(EXPORT_DEFINES ${ARG_DEVICE}
+            USE_STDPERIPH_DRIVER)
+
+    target_include_directories(${ARG_TARGET} PUBLIC
+            ${STM32F10X_STDPERIPH_LIB}/Libraries/CMSIS/CM3/CoreSupport
+            ${STM32F10X_STDPERIPH_LIB}/Libraries/CMSIS/CM3/DeviceSupport/ST/STM32F10x
+            ${STM32F10X_STDPERIPH_LIB}/Libraries/STM32F10x_StdPeriph_Driver/inc
+            )
+
+    if (NOT DEFINED ARG_DEFAULT_ASSERT_PARAM)
+        set(ARG_DEFAULT_ASSERT_PARAM TRUE)
+    endif ()
+
+    if (ARG_DEFAULT_ASSERT_PARAM)
+        target_include_directories(${ARG_TARGET} PUBLIC ${MCU_BASEDIR}/conf)
+    endif ()
+
+    if (DMA IN_LIST ARG_PARTS)
+        list(REMOVE_ITEM ARG_PARTS DMA)
+        target_sources(${ARG_TARGET} PRIVATE ${STM32F10X_STDPERIPH_LIB}/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_dma.c)
+    endif ()
+
+    if (GPIO IN_LIST ARG_PARTS)
+        list(REMOVE_ITEM ARG_PARTS GPIO)
+        target_sources(${ARG_TARGET} PRIVATE ${STM32F10X_STDPERIPH_LIB}/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_gpio.c)
+    endif ()
+
+    if (SPI IN_LIST ARG_PARTS)
+        list(REMOVE_ITEM ARG_PARTS SPI)
+        target_sources(${ARG_TARGET} PRIVATE ${STM32F10X_STDPERIPH_LIB}/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_spi.c)
+    endif ()
+
+    if (USART IN_LIST ARG_PARTS)
+        list(REMOVE_ITEM ARG_PARTS USART)
+        target_sources(${ARG_TARGET} PRIVATE ${STM32F10X_STDPERIPH_LIB}/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_usart.c)
+    endif ()
+
+    list(LENGTH ARG_PARTS l)
+    if (${l} GREATER 0)
+        message(FATAL_ERROR "Unknown parts: ${ARG_PARTS}")
+    endif ()
+
+    if (DEFINES_VAR)
+        set(" ${DEFINES_FROM_MCU_STM32} " ${EXPORT_DEFINES} PARENT_SCOPE)
+    endif ()
+
+    # Set all the defines we want the consumers to use on these objects too
+    target_compile_definitions(${ARG_TARGET} PUBLIC
+            ${EXPORT_DEFINES})
+
+endfunction()
diff --git a/cmake/mcu-stm32/conf/stm32f10x_conf.h b/cmake/mcu-stm32/conf/stm32f10x_conf.h
new file mode 100644
index 0000000..c8f4a4d
--- /dev/null
+++ b/cmake/mcu-stm32/conf/stm32f10x_conf.h
@@ -0,0 +1,18 @@
+#ifndef __STM32F10x_CONF_H
+#define __STM32F10x_CONF_H
+
+#ifdef USE_FULL_ASSERT
+#define assert_param(expr) ((expr) ? (void)0 : assert_failed((uint8_t *)__FILE__, __LINE__))
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+  void assert_failed(uint8_t* file, uint32_t line);
+#ifdef __cplusplus
+}
+#endif
+#else
+#define assert_param(expr) ((void)0)
+#endif
+
+#endif
diff --git a/cmake/stm32.toolchain.cmake b/cmake/stm32.toolchain.cmake
index 05a9090..3d39bce 100644
--- a/cmake/stm32.toolchain.cmake
+++ b/cmake/stm32.toolchain.cmake
@@ -37,8 +37,21 @@ set(LINKER_FLAGS "-nostdlib -Wl,--gc-sections ${TARGET_FLAGS}")
 
 set(CMAKE_EXE_LINKER_FLAGS "${LINKER_FLAGS}" CACHE STRING "linker flags" FORCE)
 
-cmake_force_c_compiler("${TOOLCHAIN_ROOT}/bin/${TRIPLE}-gcc" GNU)
-cmake_force_cxx_compiler("${TOOLCHAIN_ROOT}/bin/${TRIPLE}-g++" GNU)
+# Old style
+#cmake_force_c_compiler("${TOOLCHAIN_ROOT}/bin/${TRIPLE}-gcc" GNU)
+#cmake_force_cxx_compiler("${TOOLCHAIN_ROOT}/bin/${TRIPLE}-g++" GNU)
+
+find_program(ARM_CC arm-none-eabi-gcc ${TOOLCHAIN_ROOT}/bin)
+find_program(ARM_CXX arm-none-eabi-g++ ${TOOLCHAIN_ROOT}/bin)
+find_program(ARM_OBJCOPY arm-none-eabi-objcopy ${TOOLCHAIN_ROOT}/bin)
+find_program(ARM_SIZE arm-none-eabi-size ${TOOLCHAIN_ROOT}/bin)
+find_program(ARM_NM arm-none-eabi-nm ${TOOLCHAIN_ROOT}/bin)
+
+# New style, from 3.6
+set(CMAKE_C_COMPILER ${ARM_CC} CACHE FILE "")
+set(CMAKE_CXX_COMPILER ${ARM_CXX} CACHE FILE "")
+set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)
+
 # search for programs in the build host directories
 set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
 # for libraries and headers in the target directories