TI中文支持网Part Number:TMS320F28027
#pragma DATA_SECTION (Spwm_Vo_Val1,"scidata");
uint16_t print_cnt = 0;
int16 Spwm_Vo_Val1[400]={0};
printf("\r\nLI %d",Spwm_Vo_Val1[print_cnt]); print_cnt=(print_cnt+1)%400;
打印的数据始终不变实际上不把Spwm_Vo_Val1定向在scidata段打印的数据就是变化的
打印结果为 LI 1
CMD文件和编译后的各自占用的内存会以文件形式上传
F28027.txt
/*
// TI File $Revision: /main/7 $
// Checkin $Date: July 6, 200917:25:36 $
//###########################################################################
//
// FILE: F28027.cmd
//
// TITLE: Linker Command File For F28027 Device
//
//###########################################################################
// $TI Release: 2802x C/C++ Header Files and Peripheral Examples V1.29 $
// $Release Date: January 11, 2011 $
//###########################################################################
*/
/* ======================================================
// For Code Composer Studio V2.2 and later
// ---------------------------------------
// In addition to this memory linker command file,
// add the header linker command file directly to the project.
// The header linker command file is required to link the
// peripheral structures to the proper locations within
// the memory map.
//
// The header linker files are found in <base>\DSP2802_Headers\cmd
//
// For BIOS applications add:DSP2802x_Headers_BIOS.cmd
// For nonBIOS applications add:DSP2802x_Headers_nonBIOS.cmd
========================================================= */
/* ======================================================
// For Code Composer Studio prior to V2.2
// --------------------------------------
// 1) Use one of the following -l statements to include the
// header linker command file in the project. The header linker
// file is required to link the peripheral structures to the proper
// locations within the memory map*/
/* Uncomment this line to include file only for non-BIOS applications */
/* -l DSP2802x_Headers_nonBIOS.cmd */
/* Uncomment this line to include file only for BIOS applications */
/* -l DSP2802x_Headers_BIOS.cmd */
/* 2) In your project add the path to <base>\DSP2802x_headers\cmd to thelibrary search path under project->build options, linker tab,library search path (-i).
/*========================================================= */
/* Define the memory block start/length for the F28027PAGE 0 will be used to organize program sectionsPAGE 1 will be used to organize data sectionsNotes:Memory blocks on F2802x are uniform (ie samephysical memory) in both PAGE 0 and PAGE 1.That is the same memory region should not bedefined for both PAGE 0 and PAGE 1.Doing so will result in corruption of programand/or data.The L0 memory block is mirrored - that isit can be accessed in high memory or low memory.For simplicity only one instance is used in thislinker file.Contiguous SARAM memory blocks or flash sectors can bebe combined if required to create a larger memory block.FLASHD: origin = 0x3F0000, length = 0x002000FLASHC: origin = 0x3F2000, length = 0x002000FLASHB: origin = 0x3F4000, length = 0x002000
*/
MEMORY
{
PAGE 0:/* Program Memory *//* Memory (RAM/FLASH/OTP) blocks can be moved to PAGE1 for data allocation */PRAML0: origin = 0x008000, length = 0x000800/* on-chip RAM block L0 */OTP: origin = 0x3D7800, length = 0x000400/* on-chip OTP */FLASHABCD2 : origin = 0x3F1000, length = 0x006F80/* on-chip FLASH */CSM_RSVD: origin = 0x3F7F80, length = 0x000076/* Part of FLASHA. Program with all 0x0000 when CSM is in use. */BEGIN: origin = 0x3F7FF6, length = 0x000002/* Part of FLASHA. Used for "boot to Flash" bootloader mode. */CSM_PWL_P0 : origin = 0x3F7FF8, length = 0x000008/* Part of FLASHA. CSM password locations in FLASHA */IQTABLES: origin = 0x3FE000, length = 0x000B50/* IQ Math Tables in Boot ROM */IQTABLES2: origin = 0x3FEB50, length = 0x00008C/* IQ Math Tables in Boot ROM */IQTABLES3: origin = 0x3FEBDC, length = 0x0000AA/* IQ Math Tables in Boot ROM */ROM: origin = 0x3FF27C, length = 0x000D44/* Boot ROM */RESET: origin = 0x3FFFC0, length = 0x000002/* part of boot ROM */VECTORS: origin = 0x3FFFC2, length = 0x00003E/* part of boot ROM */
PAGE 1 :/* Data Memory *//* Memory (RAM/FLASH/OTP) blocks can be moved to PAGE0 for program allocation *//* Registers remain on PAGE1*/BOOT_RSVD: origin = 0x000000, length = 0x000050/* Part of M0, BOOT rom will use this for stack */RAMM0: origin = 0x000050, length = 0x0003B0/* on-chip RAM block M0 */RAMM1: origin = 0x000400, length = 0x000400/* on-chip RAM block M1 */DRAML0: origin = 0x008800, length = 0x000800/* on-chip RAM block L0 */FLASHD1: origin = 0x3F0000, length = 0x001000
}
/* Allocate sections to memory blocks.Note:codestart user defined section in DSP28_CodeStartBranch.asm used to redirect codeexecution when booting to flashramfuncs user defined section to store functions that will be copied from Flash into RAM
*/
SECTIONS
{/* Allocate program areas: */.cinit: > FLASHABCD2PAGE = 0.pinit: > FLASHABCD2,PAGE = 0.text: > FLASHABCD2PAGE = 0codestart: > BEGINPAGE = 0ramfuncs: LOAD = FLASHABCD2,RUN = PRAML0,LOAD_START(_RamfuncsLoadStart),LOAD_END(_RamfuncsLoadEnd),RUN_START(_RamfuncsRunStart),PAGE = 0csmpasswds: > CSM_PWL_P0PAGE = 0csm_rsvd: > CSM_RSVDPAGE = 0/* Allocate uninitalized data sections: */.stack: > RAMM0PAGE = 1.ebss: > DRAML0PAGE = 1.esysmem: > RAMM1 |DRAML0PAGE = 1
//.cio: > DRAML0PAGE = 1// //.cio�����HFUPS�ļ���ͷ: >> RAMM1 | DRAML0 | DRAMLL0PAGE = 1//.cio: >> RAMM0 | RAMM1 | DRAML0PAGE = 1
//scidata: > FLASHD1PAGE = 1/* Initalized sections go in Flash *//* For SDFlash to program these, they must be allocated to page 0 */.econst: > FLASHABCD2PAGE = 0.switch: > FLASHABCD2PAGE = 0/* Allocate IQ math areas: */IQmath: > FLASHABCD2PAGE = 0/* Math Code */IQmathTables: > IQTABLES, PAGE = 0, TYPE = NOLOAD/* Uncomment the section below if calling the IQNexp() or IQexp()functions from the IQMath.lib library in order to utilize therelevant IQ Math table in Boot ROM (This saves space and Boot ROMis 1 wait-state). If this section is not uncommented, IQmathTables2will be loaded into other memory (SARAM, Flash, etc.) and will takeup space, but 0 wait-state is possible.*//*IQmathTables2: > IQTABLES2, PAGE = 0, TYPE = NOLOAD{IQmath.lib<IQNexpTable.obj> (IQmathTablesRam)}*//* Uncomment the section below if calling the IQNasin() or IQasin()functions from the IQMath.lib library in order to utilize therelevant IQ Math table in Boot ROM (This saves space and Boot ROMis 1 wait-state). If this section is not uncommented, IQmathTables2will be loaded into other memory (SARAM, Flash, etc.) and will takeup space, but 0 wait-state is possible.*//*IQmathTables3: > IQTABLES3, PAGE = 0, TYPE = NOLOAD{IQmath.lib<IQNasinTable.obj> (IQmathTablesRam)}*//* .reset is a standard section used by the compiler. It contains the *//* the address of the start of _c_int00 for C Code./*/* When using the boot ROM this section and the CPU vector *//* table is not needed. Thus the default type is set here to *//* DSECT */.reset: > RESET,PAGE = 0, TYPE = DSECTvectors: > VECTORSPAGE = 0, TYPE = DSECT
}
/*
//===========================================================================
// End of file.
//===========================================================================
*/
谢谢！
Yale Li：
您好，我咨询资深工程师后回复您。
,
jun liu：
好的 谢谢 期待回答
,
Yale Li：
有回复了我会第一时间回复您
,
Yale Li：
Spwm_Vo_Val1[400] 是否在此函数之外做了修改？ 您需要将其声明为 volatile，以便编译器不会对其进行优化。
从提供的代码片段来看，初始化后数组没有立即更改。 由于这是与 SCI 相关的，所以我们的工程师假设那个模块可能独立地填充了数组？
,
jun liu：
数组是在中断中把AD值存到这里面的 关键是我换个其他数组都没问题的 我怀疑是分区问题 cmd文件也发了
,
jun liu：
我是在其他地方填充了数但没填充数字1数组400个元素打印出来全是1 这就是问题 麻烦解决下 谢谢
,
Yale Li：
我再帮您询问一下
,
jun liu：
好的 谢谢！
