NCACHE_REGION (rwx) : ORIGIN = 0x81e00000, LENGTH = 0x200000 /* 2M bytes (alias RAM5) */ The provided macro in fsl_common_arm.h looks like: #define AT_NONCACHEABLE_SECTION_ALIGN(var, alignbytes) \__attribute__((section("NonCacheable,\"aw\",%nobits @"))) var _...
I have a system with a RT1064 and HyperRAM (same chip as EVK). This works perfectly, I have run RAM tests for weeks and weeks, all checks out fine.
2) user 可以通过以下两种方式获取non-cacheable memory2.1) 定义一个global data array ,并且添加memoryattribute:ATTR_ZIDATA_IN_NONCACHED_RAM_4BYTE_ALIGNorATTR_RWDATA_IN_NONCACHED_RAM_4BYTE_ALIGN,如果定义的array 没有赋初始值,就用前者attribute,如果定义有赋初始值,就用后者attribute;ex:ATTR_ZIDATA_...
目前缓存基本上都是采用SRAM存储器,SRAM是英文StaticRAM的缩写,它是一种具有静志存取功能的存储器,不需要刷新电路即能保存它内部存储的数据。不像DRAM内存那样需要刷新电路,每隔一段时间,固定要对DRAM刷新充电一次,否则内部的数据即会消失,因此SRAM具有较高的性能,但是SRAM也有它的缺点,即它的集成度较低,相同容量的...
2.1） 定义一个global data array ，并且添加memory attribute：ATTR_ZIDATA_IN_NONCACHED_RAM_4BYTE_...
In recent years, nonvolatile memory (NVM) technologies, such as spin-transfer torque random-access memory (RAM) (STT-RAM) and phase change RAM, have drawn ... IC Lin,JN Chiou - 《IEEE Transactions on Very Large Scale Integration Systems》 被引量: 0发表: 2014年 direktzugriffsspeicher for...
My target doesn't have external RAM, and my DTC and ITC are not enough for my project, so I have to use OCRAM, my goal is to configure all OCRAM into non-cacheable, but when I change the memory configuration flags in the functions, it ends up in hard fault. Is this possible or ...
My target doesn't have external RAM, and my DTC and ITC are not enough for my project, so I have to use OCRAM, my goal is to configure all OCRAM into non-cacheable, but when I change the memory configuration flags in the functions, it ends up in hard fault. Is this possib...