将mdk工程转为cmake工程探索 (一)

os:ubuntu 16.04
前提：已正确安装 arm-none -eabi-gcc

• cmake 基本命令

  add_executable($(project) $(source)) 将source 编译成可执行文件 project

  add_library($(libname) shared $source) 将source编译成libname动态库，没有shared选项则编译成静态库

  add_subdirectory(dir) 到dir里寻找CMakeLists.txt

  include_directories(dir) 到dir里寻找头文件

  target_link_libraries(target1 target2)target1依赖于target2

• 组织内容

  原子战舰版提供的跑马灯例程中的文件并不全部需要，通过分析依赖关系，(链接地址)。
  新建文件夹，目录结构：

• 编写CMakeLists.txt

led/CMakeLists.txt
project(led)
include_directories(include)
set(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_SYSTEM_PROCESSOR arm)
set(CMAKE_C_COMPILER /usr/bin/arm-none-eabi-gcc)
add_subdirectory(share)
add_subdirectory(src)

led/shared/CMakeLists.txt
`add_library(core core_cm3.c)
add_library(delay delay.c)
add_library(led led.c)
add_library(misc misc.c)
add_library(stm32f10x_gpio stm32f10x_gpio.c)
add_library(stm32f10x_it stm32f10x_it.c)
add_library(stm32f10x_rcc stm32f10x_rcc.c)
add_library(stm32f10x_usart stm32f10x_usart.c)
add_library(sys sys.c)
add_library(system_stm32f10x system_stm32f10x.c)
add_library(usart usart.c)
target_link_libraries(sys stm32f10x)
target_link_libraries(delay sys)
target_link_libraries(usart sys)
target_link_libraries(led sys)

led/src/CMakeLists.txt
add_executable(led.hex main.c)
target_link_libraries(led.hex sys delay led usart core misc stm32f10x_gpio stm32f10x_rcc stm32f10x_usart stm32f10x_it system_stm32f10x)

• 最后
  mkdir build&&cd build&&cmake ..&&make
  ………….报错

一号错误：
include/stm32f10x.h:96:3: error: #error "Please select first the target STM32F10x device used in your application (in stm32f10x.h file)"#error "Please select first the target STM32F10x device used in your application (in stm32f10x.h file)"

打开stm32f10x.h,定位到96行，发现stm32f10x.h有芯片选型的功能，stm32f103zet的选项在70行，删掉注释，get！

二号错误

sys.c:33:7: error: expected '(' before 'void' __asm void MSR_MSP(u32 addr)

c内嵌汇编出错… 据说在mdk下也会报错，但可以忽略，不管，先把它改了。
错误代码块：
__asm void MSR_MSP(u32 addr)
{
MSR MSP, r0 //set Main Stack value
BX r14
}
改成有分号的写法：
void MSR_MSP(u32 addr)
{
__ASM volatile("MSR MSP, r0"); //set Main Stack value
__ASM volatile("BX r14");
}

get！

三号错误

/tmp/ccZtObe3.s: Assembler messages:
/tmp/ccZtObe3.s:25: Error: selected processor does not supportwfi’ in ARM mode
/tmp/ccZtObe3.s:43: Error: selected processor does not support cpsid i' in ARM mode
/tmp/ccZtObe3.s:61: Error: selected processor does not supportcpsie i’ in ARM mode
/tmp/ccZtObe3.s:81: Error: selected processor does not support requested special purpose register – msr MSP,r0'


google之，还是芯片型号问题，果然还是配置难。

一晚上成果，明天再说