dsp--28335的cmd文件学习-文章-单片机-DSP

dsp--28335的cmd文件学习

时间:05-13 15:36 阅读:6345次

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简介：在程序中将一些以前调试而没有删除的变量删除了，编译就果断ok了，问题是解决了，但是觉得自己关于cmd文件的学习太过草率了，于是，学习一些28335的cmd文件。ps：在去年的笔记中也发现中发现了error: can't allocate .text太大的原因，但是的解决办法是将一些多余的c文件删除就行了，但是还不知道为什么，现在可以解释了

首先，我们必须要知道一些基本的概念，然后再分析，这里引用书本的一些话。

28335的cmd文件有两个，一个是关于寄存器的，一个是关于程序的。

关于寄存器的cmd文件，包括两部分，一部分是section，这部分是定义的寄存器文件，一部分是map，就是为那些寄存器文件分配地址：

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MEMORY { PAGE0:/*ProgramMemory*/ PAGE1:/*DataMemory*/ DEV_EMU:origin=0x000880,length=0x000180/*deviceemulationregisters*/ FLASH_REGS:origin=0x000A80,length=0x000060/*FLASHregisters*/ CSM:origin=0x000AE0,length=0x000010/*codesecuritymoduleregisters*/ ADC_MIRROR:origin=0x000B00,length=0x000010/*ADCResultsregistermirror*/ XINTF:origin=0x000B20,length=0x000020/*externalinterfaceregisters*/ CPU_TIMER0:origin=0x000C00,length=0x000008/*CPUTimer0registers*/ CPU_TIMER1:origin=0x000C08,length=0x000008/*CPUTimer0registers(CPUTimer1&Timer2reservedTIuse)*/ CPU_TIMER2:origin=0x000C10,length=0x000008/*CPUTimer0registers(CPUTimer1&Timer2reservedTIuse)*/ PIE_CTRL:origin=0x000CE0,length=0x000020/*PIEcontrolregisters*/ PIE_VECT:origin=0x000D00,length=0x000100/*PIEVectorTable*/ DMA:origin=0x001000,length=0x000200/*DMARev0registers*/ MCBSPA:origin=0x005000,length=0x000040/*McBSP-Aregisters*/ MCBSPB:origin=0x005040,length=0x000040/*McBSP-Bregisters*/ ECANA:origin=0x006000,length=0x000040/*eCAN-Acontrolandstatusregisters*/ ECANA_LAM:origin=0x006040,length=0x000040/*eCAN-Alocalacceptancemasks*/ ECANA_MOTS:origin=0x006080,length=0x000040/*eCAN-Amessageobjecttimestamps*/ ECANA_MOTO:origin=0x0060C0,length=0x000040/*eCAN-Aobjecttime-outregisters*/ ECANA_MBOX:origin=0x006100,length=0x000100/*eCAN-Amailboxes*/ ECANB:origin=0x006200,length=0x000040/*eCAN-Bcontrolandstatusregisters*/ ECANB_LAM:origin=0x006240,length=0x000040/*eCAN-Blocalacceptancemasks*/ ECANB_MOTS:origin=0x006280,length=0x000040/*eCAN-Bmessageobjecttimestamps*/ ECANB_MOTO:origin=0x0062C0,length=0x000040/*eCAN-Bobjecttime-outregisters*/ ECANB_MBOX:origin=0x006300,length=0x000100/*eCAN-Bmailboxes*/ EPWM1:origin=0x006800,length=0x000022/*EnhancedPWM1registers*/ EPWM2:origin=0x006840,length=0x000022/*EnhancedPWM2registers*/ EPWM3:origin=0x006880,length=0x000022/*EnhancedPWM3registers*/ EPWM4:origin=0x0068C0,length=0x000022/*EnhancedPWM4registers*/ EPWM5:origin=0x006900,length=0x000022/*EnhancedPWM5registers*/ EPWM6:origin=0x006940,length=0x000022/*EnhancedPWM6registers*/ ECAP1:origin=0x006A00,length=0x000020/*EnhancedCapture1registers*/ ECAP2:origin=0x006A20,length=0x000020/*EnhancedCapture2registers*/ ECAP3:origin=0x006A40,length=0x000020/*EnhancedCapture3registers*/ ECAP4:origin=0x006A60,length=0x000020/*EnhancedCapture4registers*/ ECAP5:origin=0x006A80,length=0x000020/*EnhancedCapture5registers*/ ECAP6:origin=0x006AA0,length=0x000020/*EnhancedCapture6registers*/ EQEP1:origin=0x006B00,length=0x000040/*EnhancedQEP1registers*/ EQEP2:origin=0x006B40,length=0x000040/*EnhancedQEP2registers*/ GPIOCTRL:origin=0x006F80,length=0x000040/*GPIOcontrolregisters*/ GPIODAT:origin=0x006FC0,length=0x000020/*GPIOdataregisters*/ GPIOINT:origin=0x006FE0,length=0x000020/*GPIOinterrupt/LPMregisters*/ SYSTEM:origin=0x007010,length=0x000020/*Systemcontrolregisters*/ SPIA:origin=0x007040,length=0x000010/*SPI-Aregisters*/ SCIA:origin=0x007050,length=0x000010/*SCI-Aregisters*/ XINTRUPT:origin=0x007070,length=0x000010/*externalinterruptregisters*/ ADC:origin=0x007100,length=0x000020/*ADCregisters*/ SCIB:origin=0x007750,length=0x000010/*SCI-Bregisters*/ SCIC:origin=0x007770,length=0x000010/*SCI-Cregisters*/ I2CA:origin=0x007900,length=0x000040/*I2C-Aregisters*/ CSM_PWL:origin=0x33FFF8,length=0x000008/*PartofFLASHA.CSMpasswordlocations.*/ } SECTIONS { PieVectTableFile:>PIE_VECT,PAGE=1 /***PeripheralFrame0RegisterStructures***/ DevEmuRegsFile:>DEV_EMU,PAGE=1 FlashRegsFile:>FLASH_REGS,PAGE=1 CsmRegsFile:>CSM,PAGE=1 AdcMirrorFile:>ADC_MIRROR,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 DmaRegsFile:>DMA,PAGE=1 /***PeripheralFrame3RegisterStructures***/ McbspaRegsFile:>MCBSPA,PAGE=1 McbspbRegsFile:>MCBSPB,PAGE=1 /***PeripheralFrame1RegisterStructures***/ ECanaRegsFile:>ECANA,PAGE=1 ECanaLAMRegsFile:>ECANA_LAMPAGE=1 ECanaMboxesFile:>ECANA_MBOXPAGE=1 ECanaMOTSRegsFile:>ECANA_MOTSPAGE=1 ECanaMOTORegsFile:>ECANA_MOTOPAGE=1 ECanbRegsFile:>ECANB,PAGE=1 ECanbLAMRegsFile:>ECANB_LAMPAGE=1 ECanbMboxesFile:>ECANB_MBOXPAGE=1 ECanbMOTSRegsFile:>ECANB_MOTSPAGE=1 ECanbMOTORegsFile:>ECANB_MOTOPAGE=1 EPwm1RegsFile:>EPWM1PAGE=1 EPwm2RegsFile:>EPWM2PAGE=1 EPwm3RegsFile:>EPWM3PAGE=1 EPwm4RegsFile:>EPWM4PAGE=1 EPwm5RegsFile:>EPWM5PAGE=1 EPwm6RegsFile:>EPWM6PAGE=1 ECap1RegsFile:>ECAP1PAGE=1 ECap2RegsFile:>ECAP2PAGE=1 ECap3RegsFile:>ECAP3PAGE=1 ECap4RegsFile:>ECAP4PAGE=1 ECap5RegsFile:>ECAP5PAGE=1 ECap6RegsFile:>ECAP6PAGE=1 EQep1RegsFile:>EQEP1PAGE=1 EQep2RegsFile:>EQEP2PAGE=1 GpioCtrlRegsFile:>GPIOCTRLPAGE=1 GpioDataRegsFile:>GPIODATPAGE=1 GpioIntRegsFile:>GPIOINTPAGE=1 /***PeripheralFrame2RegisterStructures***/ SysCtrlRegsFile:>SYSTEM,PAGE=1 SpiaRegsFile:>SPIA,PAGE=1 SciaRegsFile:>SCIA,PAGE=1 XIntruptRegsFile:>XINTRUPT,PAGE=1 AdcRegsFile:>ADC,PAGE=1 ScibRegsFile:>SCIB,PAGE=1 ScicRegsFile:>SCIC,PAGE=1 I2caRegsFile:>I2CA,PAGE=1 /***CodeSecurityModuleRegisterStructures***/ CsmPwlFile:>CSM_PWL,PAGE=1

关于寄存器的cmd文件没有什么很难理解的地方，关键是程序的cmd文件，要好好学习一下。

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MEMORY { PAGE0: /*BEGINisusedforthe"boottoSARAM"bootloadermode*/ /*BOOT_RSVDisusedbythebootROMforstack.*/ /*ThissectionisonlyreservedtokeeptheBOOTROMfrom*/ /*corruptingthisareaduringthedebugprocess*/ BEGIN:origin=0x000000,length=0x000002/*BoottoM0willgohere*/ BOOT_RSVD:origin=0x000002,length=0x00004E/*PartofM0,BOOTromwillusethisforstack*/ RAMM0:origin=0x000050,length=0x0003B0 RAML0:origin=0x008000,length=0x001000 RAML1:origin=0x009000,length=0x001000 RAML2:origin=0x00A000,length=0x001000 RAML3:origin=0x00B000,length=0x001000 ZONE6A:origin=0x100000,length=0x00FC00/*XINTFzone6-programspace*/ CSM_RSVD:origin=0x33FF80,length=0x000076/*PartofFLASHA.Programwithall0x0000whenCSMisinuse.*/ CSM_PWL:origin=0x33FFF8,length=0x000008/*PartofFLASHA.CSMpasswordlocationsinFLASHA*/ ADC_CAL:origin=0x380080,length=0x000009 RESET:origin=0x3FFFC0,length=0x000002 IQTABLES:origin=0x3FE000,length=0x000b50 IQTABLES2:origin=0x3FEB50,length=0x00008c FPUTABLES:origin=0x3FEBDC,length=0x0006A0 BOOTROM:origin=0x3FF27C,length=0x000D44 PAGE1: RAMM1:origin=0x000400,length=0x000400/*on-chipRAMblockM1*/ RAML4:origin=0x00C000,length=0x001000 RAML5:origin=0x00D000,length=0x001000 RAML6:origin=0x00E000,length=0x001000 RAML7:origin=0x00F000,length=0x001000 ZONE6B:origin=0x10FC00,length=0x000400/*XINTFzone6-dataspace*/ } SECTIONS { /*Setupfor"boottoSARAM"mode: Thecodestartsection(foundinDSP28_CodeStartBranch.asm) re-directsexecutiontothestartofusercode.*/ codestart:>BEGIN,PAGE=0 ramfuncs:>RAML0,PAGE=0 .text:>RAML1,PAGE=0 .cinit:>RAML0,PAGE=0 .pinit:>RAML0,PAGE=0 .switch:>RAML0,PAGE=0 .stack:>RAMM1,PAGE=1 .ebss:>RAML4,PAGE=1 .econst:>RAML5,PAGE=1 .esysmem:>RAMM1,PAGE=1 IQmath:>RAML1,PAGE=0 IQmathTables:>IQTABLES,PAGE=0,TYPE=NOLOAD IQmathTables2:>IQTABLES2,PAGE=0,TYPE=NOLOAD FPUmathTables:>FPUTABLES,PAGE=0,TYPE=NOLOAD DMARAML4:>RAML4,PAGE=1 DMARAML5:>RAML5,PAGE=1 DMARAML6:>RAML6,PAGE=1 DMARAML7:>RAML7,PAGE=1 ZONE6DATA:>ZONE6B,PAGE=1 .reset:>RESET,PAGE=0,TYPE=DSECT/*notused*/ csm_rsvd:>CSM_RSVDPAGE=0,TYPE=DSECT/*notusedforSARAMexamples*/ csmpasswds:>CSM_PWLPAGE=0,TYPE=DSECT/*notusedforSARAMexamples*/ /*AllocateADC_calfunction(pre-programmedbyfactoryintoTIreservedmemory)*/ .adc_cal:load=ADC_CAL,PAGE=0,TYPE=NOLOAD }

也是分为两个部分，下面是段，上面是为那些段分配的地址，当然有些段在程序中比较大，但是给他分配的地址又不够，这个时候就报错了，这个时候需要修改程序或者修改cmd文件了，这样，大致的思路就清晰了。PAGE 0代表程序空间，PAGE 1代表数据空间，我们可以将一个大的空间分成两部分，然后将一些段放在这两部分空间里，但这两空间的总和不能超过原有的空间，上述是运行在ram的cmd文件，下面这个cmd文件我报错的cmd文件，对比一下就可以知道原因了。

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MEMORY { PAGE0:/*ProgramMemory*/ /*Memory(RAM/FLASH/OTP)blockscanbemovedtoPAGE1fordataallocation*/ ZONE0:origin=0x004000,length=0x001000/*XINTFzone0*/ RAM_L0L1L2L3:origin=0x008000,length=0x004000/*on-chipRAM*/ OTP:origin=0x380400,length=0x000400/*on-chipOTP*/ ZONE6:origin=0x100000,length=0x100000/*XINTFzone6*/ ZONE7A:origin=0x200000,length=0x00FC00/*XINTFzone7-programspace*/ FLASHH:origin=0x300000,length=0x008000/*on-chipFLASH*/ FLASHG:origin=0x308000,length=0x008000/*on-chipFLASH*/ FLASHF:origin=0x310000,length=0x008000/*on-chipFLASH*/ FLASHE:origin=0x318000,length=0x008000/*on-chipFLASH*/ FLASHD:origin=0x320000,length=0x008000/*on-chipFLASH*/ FLASHC:origin=0x328000,length=0x008000/*on-chipFLASH*/ FLASHA:origin=0x338000,length=0x007F80/*on-chipFLASH*/ CSM_RSVD:origin=0x33FF80,length=0x000076/*PartofFLASHA.Programwithall0x0000whenCSMisinuse.*/ BEGIN_FLASH:origin=0x33FFF6,length=0x000002/*PartofFLASHA.Usedfor"boottoFlash"bootloadermode.*/ CSM_PWL:origin=0x33FFF8,length=0x000008/*PartofFLASHA.CSMpasswordlocationsinFLASHA*/ ADC_CAL:origin=0x380080,length=0x000009/*PartofTIOTP*/ IQTABLES:origin=0x3FE000,length=0x000b50/*IQMathTablesinBootROM*/ IQTABLES2:origin=0x3FEB50,length=0x00008c/*IQMathTablesinBootROM*/ FPUTABLES:origin=0x3FEBDC,length=0x0006A0/*FPUTablesinBootROM*/ ROM:origin=0x3FF27C,length=0x000D44/*BootROM*/ RESET:origin=0x3FFFC0,length=0x000002/*partofbootROM*/ VECTORS:origin=0x3FFFC2,length=0x00003E/*partofbootROM*/ PAGE1:/*DataMemory*/ /*Memory(RAM/FLASH/OTP)blockscanbemovedtoPAGE0forprogramallocation*/ /*RegistersremainonPAGE1*/ RAMM0:origin=0x000000,length=0x000400/*on-chipRAMblockM0*/ BOOT_RSVD:origin=0x000400,length=0x000080/*PartofM1,BOOTromwillusethisforstack*/ RAMM1:origin=0x000480,length=0x000380/*on-chipRAMblockM1*/ RAML4:origin=0x00C000,length=0x001000/*on-chipRAMblockL4*/ RAML5:origin=0x00D000,length=0x001000/*on-chipRAMblockL5*/ RAML6:origin=0x00E000,length=0x001000/*on-chipRAMblockL6*/ RAML7:origin=0x00F000,length=0x001000/*on-chipRAMblockL7*/ ZONE7B:origin=0x20FC00,length=0x000400/*XINTFzone7-dataspace*/ } /**************************************************************/ /*Linkalluserdefinedsections*/ /**************************************************************/ SECTIONS { }

看下M1分成了两个部分，ebss的部分当然就没有0x400了，这也是为什么会报错的原因了，这是学习cmd文件最基本的东西，要真正学好还有很长的一段距离，只能慢慢来了。