楼主你好，回答你的几个问题：
1.Mcuxpresso在Debug调试时，程序指令是指向Main函数首地址，可以改配置能让它指向芯片复位后的地址，比如指到ResetISR处吗。
答：请看下面的图片， 在debug configuration里面设置，把set breakpoint at main, 改成ResetISR。
2.如果上电后需要改动配置，把代码从Flash拷贝到特定的RAM区，比如拷贝到SRAM_LOWER区或者SRAM_UPPER区后再执行，需要怎样改动配置？
答：参考官方代码startup_<chip partnumber>.c
//
// Copy the data sections from flash to SRAM.
//
unsigned int LoadAddr, ExeAddr, SectionLen;
unsigned int *SectionTableAddr;
// Load base address of Global Section Table
SectionTableAddr = &__data_section_table;
// Copy the data sections from flash to SRAM.
while (SectionTableAddr < &__data_section_table_end) {
LoadAddr = *SectionTableAddr++;
ExeAddr = *SectionTableAddr++;
SectionLen = *SectionTableAddr++;
data_init(LoadAddr, ExeAddr, SectionLen);
}
3.使用Keil进行开发时，发现Keil中使用的芯片库函数和Mcuxpresso中使用的库函数不一样，如果需要使用Keil开发，能提供一个基于Keil开发的工程吗？
答：请下载SDK 包，IDE选择keil。
Have a great day,
Kerry
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感谢回复：
在第二点中，这段在函数ResetISR中的代码将程序拷贝到了RAM区，但函数中间的几个变量是在哪里定义和更改的呢，目前好像是工程建立后就给这几个变量赋值到了Flash和RAM首地址？
我是在mcuxpreeso中新建的一个工程，在工程中并没有搜索到这几个变量的定义，只看到了这几个变量的extern 声明。
另外从官网上down下来的基于IAR和KEil的SDK，把board里面的工程打开后，启动文件都是MKV31F512芯片，而非我下载的MKV30F128芯片的启动文件。工程路径如下所示：
Keil中的工程直接编译后还会报警，提示启动文件起始行不正确？是因为Keil版本的问题？
楼主你好！
你打开官方的hello_world工程，在变量定义上面有这段话：
//*****************************************************************************
// The following symbols are constructs generated by the linker, indicating
// the location of various points in the "Global Section Table". This table is
// created by the linker via the Code Red managed linker script mechanism. It
// contains the load address, execution address and length of each RW data
// section and the execution and length of each BSS (zero initialized) section.
//*****************************************************************************
所以说明是linker文件里面定义的，你再打开frdmkv31f_hello_world_debug.ld
希望能帮到你！
Have a great day,
Kerry
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