RT1052 怎么将代码搬运到SDRAM运行？

[1914795885]

  您好：

         RT1052外置了8MB的flash和32MB的SDRAM，在上电时，能否将代码搬运到SDRAM中运行？，该怎么做呢？搬运到SDRAM中运行，效率是否会提升呢？还有我有少量的传感器数据，需要掉电储存，代码搬运到SDRAM中运行后，8MB的flash是否可以存储传感器数据呢？

[jeremyzhou]

Hi main i,

非常感谢使用NXP产品，很高兴为你提供技术支持！
1. 实现代码从Flash迁移到SDRAM中运行的操作步骤，请查阅对应IDE的用户手册。
2. 效率相比运行在Flash内，当然会有提高。
3. 可以存储回flash内。

Have a great day,
TIC

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[1914795885]

关于代码搬运方面，能不能提供一个例子，MDK或者IAR都可以

[jeremyzhou · Accepted solution]

Hi main i,

感谢你的回复。

假设你的工程函数代码很小的话，在定义函数时，前面添加_ramfunc 关键字，IDE会自动将函数拷贝到RAM中，具体你可以参考此贴的分享：http://www.keil.com/support/docs/3228.htm。

但是如果工程函数巨大的话，可以专门写一个拷贝函数将目标函数从Flash拷贝到对应的RAM中运行，这种方式你可以参考下面这个帖子：https://community.arm.com/developer/tools-software/tools/f/keil-forum/31967/lpc1768-copy-function-co...

Have a great day,
TIC

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[1914795885]

非常感谢，我也找到了一个关于这方面的帖子  https://www.eefocus.com/constyu/blog/19-01/435767_5f1b0.html