大家好，我正在用F28027的开发板制作 闭环控制回路。我用 DPL的 2p2z, ADC, Epwm，来进行闭环控制。
一切链接的非常顺利，也可以正常的闭环控制，2p2z非常精确的控制pid。
但是，如果我不能增加任意一条 变量声明，例如 long test；在 {ProjectName}-main.c 文件的 main() 文件头处。
如果加入了一条以上的变量，2p2z的输出变得不可控，也就是说，无论反馈端是什么，out都不变。
不知道这是linker的问题还是别的问题？我尝试更改RAM linker, .ebss 的地址，或者 dataRAM的地址或者长度，结果没有任何变化。
下面是我的linker 文件的内容：
/*==================================================================================*/
/* User specific Linker command file for running from RAM */
/*==================================================================================*/
/* FILE: F28027_RAM_ProjectName.CMD */
/* */
/* Description: Linker command file for User custom sections targetted to run */
/* from RAM. */
/* */
/* Target: TMS320F28027 */
/* */
/* Version: 1.1 */
/* */
/*----------------------------------------------------------------------------------*/
/* Copyright Texas Instruments ? 2007 */
/*----------------------------------------------------------------------------------*/
/* Revision History: */
/*----------------------------------------------------------------------------------*/
/* Date | Description */
/*----------------------------------------------------------------------------------*/
/* 04/23/09 | Release 1.1 */
/*----------------------------------------------------------------------------------*/
/* Define the memory block start/length for the DSP2802x
PAGE 0 will be used to organize program sections
PAGE 1 will be used to organize data sections
Notes:
Memory blocks on F28022 are uniform (ie same
physical memory) in both PAGE 0 and PAGE 1.
That is the same memory region should not be
defined for both PAGE 0 and PAGE 1.
Doing so will result in corruption of program
and/or data.
The L0 memory blocks is mirrored - that is
it can be accessed in high memory or low memory.
For simplicity only one instance is used in this
linker file.
Contiguous SARAM memory blocks can be combined
if required to create a larger memory block.
*/
MEMORY
{
PAGE 0 :
BEGIN : origin = 0x000000, length = 0x000002
BOOT_RSVD : origin = 0x000002, length = 0x00004E
RAMM0 : origin = 0x000050, length = 0x0003B0
progRAM : origin = 0x008000, length = 0x000800
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 */
RESET : origin = 0x3FFFC0, length = 0x000002
BOOTROM : origin = 0x3FF27C, length = 0x000D44
PAGE 1 :
RAMM1 : origin = 0x000480, length = 0x000400
dataRAM : origin = 0x008800, length = 0x000800
}
SECTIONS
{
codestart : > BEGIN, PAGE = 0
ramfuncs : > progRAM, PAGE = 0
.text : > progRAM, PAGE = 0
.cinit : > RAMM0, PAGE = 0
.pinit : > RAMM0, PAGE = 0
.switch : > RAMM0, PAGE = 0
.reset : > RESET, PAGE = 0, TYPE = DSECT
.stack : > RAMM1, PAGE = 1
.ebss : > dataRAM, PAGE = 1
.econst : > RAMM1, PAGE = 1
.esysmem : > RAMM1, PAGE = 1
IQmath : > progRAM, PAGE = 0
IQmathTables : > IQTABLES, PAGE = 0, TYPE = NOLOAD
}
SECTIONS
{
/************* DPLIB Sections C28x ************************/
/* ADCDRV_1ch section */
ADCDRV_1ch_Section : > dataRAM PAGE = 1
/* ADCDRV_4ch section */
ADCDRV_8ch_Section : > dataRAM PAGE = 1
/* CNTL_2P2Z section */
CNTL_2P2Z_Section : > dataRAM PAGE = 1
CNTL_2P2Z_InternalData : > dataRAM PAGE = 1
CNTL_2P2Z_Coef : > dataRAM PAGE = 1
/* CNTL_3P3Z section */
CNTL_3P3Z_Section : > dataRAM PAGE = 1
CNTL_3P3Z_InternalData : > dataRAM PAGE = 1
CNTL_3P3Z_Coef : > dataRAM PAGE = 1
/*DLOG_4CH section */
DLOG_4CH_Section : > dataRAM PAGE = 1
DLOG_BUFF : > dataRAM PAGE = 1
/*MATH_EMAVG section */
MATH_EMAVG_Section : > dataRAM PAGE = 1
/*PFC_ICMD section*/
PFC_ICMD_Section : > dataRAM PAGE = 1
/*PFC_INVSQR section*/
PFC_INVSQR_Section : > dataRAM PAGE = 1
/* PWMDRV_1ch driver section */
PWMDRV_1ch_Section : > dataRAM PAGE = 1
/* PWMDRV_1chHiRes driver section */
PWMDRV_1chHiRes_Section : > dataRAM PAGE = 1
/* PWMDRV_PFC2PhiL driver section */
PWMDRV_PFC2PhiL_Section : > dataRAM PAGE = 1
/* PWMDRV_PSFB driver section */
PWMDRV_PSFB_Section : > dataRAM PAGE = 1
/* PWMDRV_DualUpDwnCnt driver section */
PWMDRV_DualUpDwnCnt_Section : > dataRAM PAGE = 1
/* PWMDRV_ComplPairDB driver section */
PWMDRV_ComplPairDB_Section : > dataRAM PAGE = 1
/* ZeroNet_Section */
ZeroNet_Section : > dataRAM PAGE = 1
}
/*
//===========================================================================
// End of file.
//===========================================================================
*/
