如何調整RT1052 記憶體配置到512K Bytes

[vk8051]

Hi,

我使用RT1050編譯時顯示記憶體不足

unable to allocate space for sections/blocks with a total estimated minimum size of 0x4'52e8 bytes (max align 0x4) in <[0x2000'0000-0x2001'fbff]> (total uncommitted space 0x1'fc00).

MIMXRT1052xxxxx_flexspi_nor.icf 記憶體設置如下
define symbol m_data_start = 0x20000000;
define symbol m_data_end = 0x2001FFFF;

增加記憶體範圍也是沒用,請問如何正確設置可以使用全部512K Bytes的記憶體

謝謝

[jeremyzhou]

Hi Vincent kuo,

Thank you for your interest in NXP Semiconductor products and for the opportunity to serve you.
首先，要明确的ITCM、DTCM及OCRAM地址范围均分配了512KB，但这并不是说这三种存储器都有512KB 大小。实际上这三种存储器共享内部SRAM的空间，而这个内部SRAM空间在RT1052 芯片中为512KB，在RT1052 中，默认ITCM和
DTCM 各占128KB，OCRAM 占256KB，但是各存储区域大小是可以调整的，具体参考具体可参考《Using the i.MX RT FlexRAM》文档。
Have a great day,
TIC

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[vk8051]

Hi Jeremy,

目前電路板上只有MCU+SPI Flash所以請問

I-TCM指的是SPI把FLASH讀出程式再放到I-TCM去執行嗎?

D-TCM是指程式中靜態的資料定義等等

OCRAM就是一般程式中使用的資料等等

以上的理解對嗎?

謝謝

Vincent Kuo

[jeremyzhou · Accepted solution]

Hi Vincent kuo,

Thanks for your reply.

可以这样理解。
Have a great day,
TIC

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