变量定义在不同RAM块的超简单方法，含MDK，GCC和IAR

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楼主 | 2018-8-10 14:50 | 只看该作者回帖奖励

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RAM, MDK, IAR, GCC, buffer

前面的ALIGN_32BYTES不用管，是用来做32位字节对齐用的。需要用在在RAM域，指定调用__attribute__((section (&quot; 参数 &quot;) 指定 .RAM_D1 .RAM_D2 .RAM_D3即可。

/******** MDMA Destination 0 Buffer definition *******//*Buffer location and size should aligned to cache line size (32 bytes) */
#if defined ( __ICCARM__ )
#pragma location = 0x24004000
uint32_t DESTBuffer0_D1_AXISRAM[BUFFER_SIZE0];
#elif defined ( __CC_ARM )
ALIGN_32BYTES(__attribute__((section (&quot;.RAM_D1&quot;))) uint32_t DESTBuffer0_D1_AXISRAM[BUFFER_SIZE0]);
#elif defined ( __GNUC__ )
ALIGN_32BYTES(uint32_t __attribute__((section (&quot;.RAM_D1&quot;))) DESTBuffer0_D1_AXISRAM[BUFFER_SIZE0]);
#endif

/*****************************************************/

/******** MDMA Destination 1 Buffer definition *******/
/*Buffer location and size should aligned to cache line size (32 bytes) */
#if defined ( __ICCARM__ )
#pragma location = 0x30000000
uint32_t DESTBuffer1_D2_SRAM1[BUFFER_SIZE0];
#elif defined ( __CC_ARM )
ALIGN_32BYTES(__attribute__((section (&quot;.RAM_D2&quot;))) uint32_t DESTBuffer1_D2_SRAM1[BUFFER_SIZE0]);
#elif defined ( __GNUC__ )
ALIGN_32BYTES(uint32_t __attribute__((section (&quot;.RAM_D2&quot;))) DESTBuffer1_D2_SRAM1[BUFFER_SIZE0]);
#endif
/*****************************************************/

/******** MDMA Destination 2 Buffer definition *******/
/*Buffer location and size should aligned to cache line size (32 bytes) */
#if defined ( __ICCARM__ )
#pragma location = 0x38000000
uint32_t DESTBuffer2_D3_AHBSRAM[BUFFER_SIZE0];
#elif defined ( __CC_ARM )
ALIGN_32BYTES(uint32_t __attribute__((section (&quot;.RAM_D3&quot;))) DESTBuffer2_D3_AHBSRAM[BUFFER_SIZE0]);
#elif defined ( __GNUC__ )
ALIGN_32BYTES(uint32_t __attribute__((section (&quot;.RAM_D3&quot;))) DESTBuffer2_D3_AHBSRAM[BUFFER_SIZE0]);
#endif
/*****************************************************/

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变量定义在不同RAM块的超简单方法，含MDK，GCC和IAR

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