Hello,
I am using the IQmath library on digital signal processor TMS320F2812. There are two linker command files that are specific for this device, F2812.cmd and DSP281x_Headers_nonBIOS.cmd, and there is a linker command file that comes with IQmath, 2812_IQmath_lnk.cmd. The three are included below for your reference with some irrelevant comments removed.
A code that sets up the general purpose time to output a square waveform works in the program version that does not use IQ variables and uses the F2812.cmd linker command file. After introducing IQ variables, excluding F2812.cmd from the the build and instead adding 2812_IQmath_lnk.cmd, the square wave does not appear at the output T1PWM any more. This must be because of the different linker command file. I conclude that something that is in the original linker file, but not in the one that comes with the IQ math library, is required to get the timer working.
Having both linker command file results in several error messages saying
... memory range overlaps existing memory range
... memory range has already been specified
So I believe now that one has to include the part from 2812_IQmath_lnk.cmd that enables the use of the IQmath features into the F2812.cmd file so as to profit from what it says in there as well. How does this work?
Regards,
Adrian
/*
// TI File $Revision: /main/2 $
// Checkin $Date: April 28, 2005 15:19:56 $
//###########################################################################
//
// FILE: F2812.cmd
//
// TITLE: Linker Command File For F2812 Device
//
//###########################################################################
// $TI Release: DSP281x C/C++ Header Files V1.20 $
// $Release Date: July 27, 2009 $
//###########################################################################
*/
/* ======================================================
// 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>\DSP281x_Headers\cmd
//
// For BIOS applications add: DSP281x_Headers_nonBIOS.cmd
// For nonBIOS applications add: DSP281x_Headers_nonBIOS.cmd
========================================================= */
/* Define the memory block start/length for the F2812
PAGE 0 will be used to organize program sections
PAGE 1 will be used to organize data sections
Notes:
Memory blocks on F2812 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.
*/
MEMORY
{
PAGE 0: /* Program Memory */
/* Memory (RAM/FLASH/OTP) blocks can be moved to PAGE1 for data allocation */
ZONE0 : origin = 0x002000, length = 0x002000 /* XINTF zone 0 */
ZONE1 : origin = 0x004000, length = 0x002000 /* XINTF zone 1 */
RAML0 : origin = 0x008000, length = 0x001000 /* on-chip RAM block L0 */
ZONE2 : origin = 0x080000, length = 0x080000 /* XINTF zone 2 */
ZONE6 : origin = 0x100000, length = 0x080000 /* XINTF zone 6 */
OTP : origin = 0x3D7800, length = 0x000800 /* on-chip OTP */
FLASHJ : origin = 0x3D8000, length = 0x002000 /* on-chip FLASH */
FLASHI : origin = 0x3DA000, length = 0x002000 /* on-chip FLASH */
FLASHH : origin = 0x3DC000, length = 0x004000 /* on-chip FLASH */
FLASHG : origin = 0x3E0000, length = 0x004000 /* on-chip FLASH */
FLASHF : origin = 0x3E4000, length = 0x004000 /* on-chip FLASH */
FLASHE : origin = 0x3E8000, length = 0x004000 /* on-chip FLASH */
FLASHD : origin = 0x3EC000, length = 0x004000 /* on-chip FLASH */
FLASHC : origin = 0x3F0000, length = 0x004000 /* on-chip FLASH */
FLASHA : origin = 0x3F6000, length = 0x001F80 /* 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 : origin = 0x3F7FF8, length = 0x000008 /* Part of FLASHA. CSM password locations in FLASHA */
/* ZONE7 : origin = 0x3FC000, length = 0x003FC0 /* XINTF zone 7 available if MP/MCn=1 */
ROM : origin = 0x3FF000, length = 0x000FC0 /* Boot ROM available if MP/MCn=0 */
RESET : origin = 0x3FFFC0, length = 0x000002 /* part of boot ROM (MP/MCn=0) or XINTF zone 7 (MP/MCn=1) */
VECTORS : origin = 0x3FFFC2, length = 0x00003E /* part of boot ROM (MP/MCn=0) or XINTF zone 7 (MP/MCn=1) */
PAGE 1 : /* Data Memory */
/* Memory (RAM/FLASH/OTP) blocks can be moved to PAGE0 for program allocation */
/* Registers remain on PAGE1 */
RAMM0 : origin = 0x000000, length = 0x000400 /* on-chip RAM block M0 */
RAMM1 : origin = 0x000400, length = 0x000400 /* on-chip RAM block M1 */
RAML1 : origin = 0x009000, length = 0x001000 /* on-chip RAM block L1 */
FLASHB : origin = 0x3F4000, length = 0x002000 /* on-chip FLASH */
RAMH0 : origin = 0x3F8000, length = 0x002000 /* on-chip RAM block H0 */
}
/* Allocate sections to memory blocks.
Note:
codestart user defined section in DSP28_CodeStartBranch.asm used to redirect code
execution when booting to flash
ramfuncs user defined section to store functions that will be copied from Flash into RAM
*/
SECTIONS
{
/* Allocate program areas: */
.cinit : > FLASHA PAGE = 0
.pinit : > FLASHA, PAGE = 0
.text : > FLASHA PAGE = 0
codestart : > BEGIN PAGE = 0
ramfuncs : LOAD = FLASHD,
RUN = RAML0,
LOAD_START(_RamfuncsLoadStart),
LOAD_END(_RamfuncsLoadEnd),
RUN_START(_RamfuncsRunStart),
PAGE = 0
csmpasswds : > CSM_PWL PAGE = 0
csm_rsvd : > CSM_RSVD PAGE = 0
/* Allocate uninitalized data sections: */
.stack : > RAMM0 PAGE = 1
.ebss : > RAML1 PAGE = 1
.esysmem : > RAMH0 PAGE = 1
/* Initalized sections go in Flash */
/* For SDFlash to program these, they must be allocated to page 0 */
.econst : > FLASHA PAGE = 0
.switch : > FLASHA PAGE = 0
/* Allocate IQ math areas: */
IQmath : > FLASHC PAGE = 0 /* Math Code */
IQmathTables : > ROM PAGE = 0, TYPE = NOLOAD /* Math Tables In ROM */
/* .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 = DSECT
vectors : > VECTORS PAGE = 0, TYPE = DSECT
}
/*
// TI File $Revision: /main/4 $
// Checkin $Date: July 9, 2008 14:12:52 $
//###########################################################################
//
// FILE: F2812_IQmath_lnk.cmd
//
// TITLE: Linker Command File For IQmath examples that run out of RAM
//
//###########################################################################
// $TI Release: IQmath V1.5a $
// $Release Date: June 2, 2009 $
//###########################################################################
*/
MEMORY
{
PAGE 0 :
/* IQTABLES is part of the boot ROM. The boot ROM
is available in both program or data space so this
can be defined on page 0 or page 1
*/
IQTABLES : origin = 0x3FF000, length = 0x000b50
RAMM0 : origin = 0x000000, length = 0x000400
BEGIN : origin = 0x3F8000, length = 0x000002
RAMH0 : origin = 0x3F8002, length = 0x001FFE
RESET : origin = 0x3FFFC0, length = 0x000002
PAGE 1 :
RAMM1 : origin = 0x000400, length = 0x000400
RAML0L1 : origin = 0x008000, length = 0x002000
}
SECTIONS
{
/* IQmath includes the assembly routines in the IQmath library
IQmathTables is used by division, IQsin, IQcos, IQatan, IQatan2
this is in boot ROM so we make it NOLOAD. Using
the ROM version saves space at the cost of 1 cycle
per access (boot ROM is 1 wait).
IQmathTablesRam is used by IQasin, IQacos, and IQexp
*/
IQmath : > RAMH0, PAGE = 0
IQmathTables : > IQTABLES, PAGE = 0, type = NOLOAD
IQmathTablesRam : > RAML0L1, PAGE = 1
codestart : > BEGIN, PAGE = 0
ramfuncs : > RAMH0 PAGE = 0
.text : > RAMH0, PAGE = 0
.cinit : > RAMM0, PAGE = 0
.pinit : > RAMH0, PAGE = 0
.switch : > RAMM0, PAGE = 0
.reset : > RESET, PAGE = 0, TYPE = DSECT /* not used, */
.stack : > RAMM1, PAGE = 1
.cio : > RAML0L1, PAGE = 1
.ebss : > RAML0L1, PAGE = 1
.econst : > RAML0L1, PAGE = 1
.esysmem : > RAML0L1, PAGE = 1
}
/*
// TI File $Revision: /main/4 $
// Checkin $Date: July 9, 2009 17:39:29 $
//###########################################################################
//
// FILE: DSP281x_Headers_nonBIOS.cmd
//
// TITLE: DSP281x Peripheral registers linker command file
//
// DESCRIPTION:
//
// This file is for use in Non-BIOS applications.
//
// Linker command file to place the peripheral structures
// used within the DSP28 headerfiles into the correct memory
// mapped locations.
//
// This version of the file includes the PieVectorTable structure.
// For BIOS applications, please use the DSP281x_Headers_BIOS.cmd file
// which does not include the PieVectorTable structure.
//
//###########################################################################
// $TI Release: DSP281x C/C++ Header Files V1.20 $
// $Release Date: July 27, 2009 $
//###########################################################################
*/
MEMORY
{
PAGE 0: /* Program Memory */
PAGE 1: /* Data Memory */
DEV_EMU : origin = 0x000880, length = 0x000180 /* device emulation registers */
PIE_VECT : origin = 0x000D00, length = 0x000100 /* PIE Vector Table */
FLASH_REGS : origin = 0x000A80, length = 0x000060 /* FLASH registers */
CSM : origin = 0x000AE0, length = 0x000010 /* code security module registers */
XINTF : origin = 0x000B20, length = 0x000020 /* external interface registers */
CPU_TIMER0 : origin = 0x000C00, length = 0x000008 /* CPU Timer0 registers */
CPU_TIMER1 : origin = 0x000C08, length = 0x000008 /* CPU Timer1 registers */
CPU_TIMER2 : origin = 0x000C10, length = 0x000008 /* CPU Timer2 registers */
PIE_CTRL : origin = 0x000CE0, length = 0x000020 /* PIE control registers */
ECANA : origin = 0x006000, length = 0x000040 /* eCAN control and status registers */
ECANA_LAM : origin = 0x006040, length = 0x000040 /* eCAN local acceptance masks */
ECANA_MOTS : origin = 0x006080, length = 0x000040 /* eCAN message object time stamps */
ECANA_MOTO : origin = 0x0060C0, length = 0x000040 /* eCAN object time-out registers */
ECANA_MBOX : origin = 0x006100, length = 0x000100 /* eCAN mailboxes */
SYSTEM : origin = 0x007010, length = 0x000020 /* System control registers */
SPIA : origin = 0x007040, length = 0x000010 /* SPI registers */
SCIA : origin = 0x007050, length = 0x000010 /* SCI-A registers */
XINTRUPT : origin = 0x007070, length = 0x000010 /* external interrupt registers */
GPIOMUX : origin = 0x0070C0, length = 0x000020 /* GPIO mux registers */
GPIODAT : origin = 0x0070E0, length = 0x000020 /* GPIO data registers */
ADC : origin = 0x007100, length = 0x000020 /* ADC registers */
EVA : origin = 0x007400, length = 0x000040 /* Event Manager A registers */
EVB : origin = 0x007500, length = 0x000040 /* Event Manager B registers */
SCIB : origin = 0x007750, length = 0x000010 /* SCI-B registers */
MCBSPA : origin = 0x007800, length = 0x000040 /* McBSP registers */
CSM_PWL : origin = 0x3F7FF8, length = 0x000008 /* Part of FLASHA. CSM password locations. */
}
SECTIONS
{
PieVectTableFile : > PIE_VECT, PAGE = 1
/*** Peripheral Frame 0 Register Structures ***/
DevEmuRegsFile : > DEV_EMU, PAGE = 1
FlashRegsFile : > FLASH_REGS, PAGE = 1
CsmRegsFile : > CSM, PAGE = 1
XintfRegsFile : > XINTF, PAGE = 1
CpuTimer0RegsFile : > CPU_TIMER0, PAGE = 1
CpuTimer1RegsFile : > CPU_TIMER1, PAGE = 1
CpuTimer2RegsFile : > CPU_TIMER2, PAGE = 1
PieCtrlRegsFile : > PIE_CTRL, PAGE = 1
/*** Peripheral Frame 1 Register Structures ***/
ECanaRegsFile : > ECANA, PAGE = 1
ECanaLAMRegsFile : > ECANA_LAM PAGE = 1
ECanaMboxesFile : > ECANA_MBOX PAGE = 1
ECanaMOTSRegsFile : > ECANA_MOTS PAGE = 1
ECanaMOTORegsFile : > ECANA_MOTO PAGE = 1
/*** Peripheral Frame 2 Register Structures ***/
SysCtrlRegsFile : > SYSTEM, PAGE = 1
SpiaRegsFile : > SPIA, PAGE = 1
SciaRegsFile : > SCIA, PAGE = 1
XIntruptRegsFile : > XINTRUPT, PAGE = 1
GpioMuxRegsFile : > GPIOMUX, PAGE = 1
GpioDataRegsFile : > GPIODAT PAGE = 1
AdcRegsFile : > ADC, PAGE = 1
EvaRegsFile : > EVA, PAGE = 1
EvbRegsFile : > EVB, PAGE = 1
ScibRegsFile : > SCIB, PAGE = 1
McbspaRegsFile : > MCBSPA, PAGE = 1
/*** Code Security Module Register Structures ***/
CsmPwlFile : > CSM_PWL, PAGE = 1
}
/******************* end of file ************************/
