最新DSP在线升级程序步骤资料

1、精品文档目标板：C2000 的 28335/28069一、主要思路：1、 准备升级程序(相当于一个bootloader )，作为上电首先运行的程序。进入升级程序，首先判断需不 需要升级，需要升级，进入升级状态，通信完成新的主程序的接收，存入，升级成功后，进入主程序运行。2、在主程序运行时，收到升级指令，标记升级标志，重启进入升级程序进去升级。3、 板子上电后，会调到flash启动的起始地址 0x33FFF6( DSP28335 )，这个地址存放着程序的 codestart 的其实地址。所以，修改了0X33FFF6的存放的值，那么就能决定执行那一段程序。还可以通过汇编跳转 指令直接跳转到程序 c

2、odestart执行。二、升级程序1、 具备能力：具备通信能力和Flash读写能力2、 准备：Flash API移植、上位机的升级配套程序；存储升级标志位的空间(外部EEPROM，不会随便擦 除的内部Flash)3、流程：接收- 校验- 烧写- 跳转三、升级步骤1、 数据接收：通过 CAN/串口等方式接收数据。由于28335内存较小，不适合缓存大量的数据，这里是接收一部分数据，校验完成后烧写进Flash，再去接收一部分数据2、 数据解析：接收到的数据是hex格式的数据，所以需要解析才能放入对应的flash地址。但由于28335 能力限制，这里采用先在上位机解析完成，采用先告知地址，然后发送数据

3、的方式完成数据通信和传输。3、校验：这里采用 crc校验。/*Name : crc16*Function: crc 校验 16 位*Params : data ( UInt8 * )：待操作的数组len:数据长度*Return : UInt16 :返回CRC值CRC校验码为2个字节高位在前*/UInt16 crc16(Uint8 *data, UInt16 len)UInt16 CRC = 0xFFFF;UInt8 j, TMP = 0;UInt8 i;for (i = 0; i len; i+)CRC 人=datai;for (j = 0; j 1;if(TMP)CRC = CRC 人 0x

4、A001;return CRC;4、 数据烧写flash :运用flash API提供的接收完成数据的烧写。这里要注意flash API必须运行在RAM 中。5、 完成数据烧写后，需要跳转到主程序。一般采用汇编指令。汇编指令asm(LB OxXXXXXX)或者汇编 函数。这里采用asm的方式，跳转地址为新应用程序的起始地址，这里必须规定每次跟新的新应用程序的起始地址必须固定。asm( LB 0x3xxxxx);如果是使用变动的起始地址，则必须采用汇编函数，把地址作为参数传进函数。四、主程序1、接收升级指令后，能够标志升级状态。重启进入升级程序，进行判断，进而升级程序。2、主程序运行后，升级状态

5、标记为不用升级状态。五、注意点1、升级程序与主程序要严格分开，合理分配flash空间,附升级程序和主程序 cmd大致分配空间。主程序cmd文件/* File: f28335_nonBIOS_flash.cmd - Linker command file for non-DSP/BIOS* code with DSP in Boot to Flash boot mode.* History: 09/18/07 - original (D. Alter)*/MEMORYPAGE 0: /* Program Memory */BEGIN_MO : origin = 0x000000, length

6、= 0x000002/* Part of MOSARAM. Used for Boot to M0 bootloader mode. */FLASH_PROGRAMS : origin = 0x310000, length = 0x000010/* On-chip FLASH */FLASH_PROGRAM : origin = 0x310010, length = 0x01FFF0 /* On-chip FLASH */ZONE7A : origin = 0x200000, length = 0x010000CSM_RSVD:origin = 0x33FF80, length = 0x000

7、076/* Part of FLASH Sector A.Reserved when CSM is in use. */BEGIN_FLASH : origin = 0x33FFF6, length = 0x000002/* Part of FLASH Sector A.Used for Jump to flashbootloader mode. */PASSWORDS: origin = 0x33FFF8, length = 0x000008/* Part of FLASH Sector A.CSM password locations. */ADC_CAL:origin = 0x38008

8、0, length = 0x000009/* ADC_cal function in Reserved memory */OTP:origin = 0x380400, length = 0x000400/* 1Kw OTP */IQTABLES:origin = 0x3FE000, length = 0x000B50/* Part of Boot ROM */IQTABLES2:origin = 0x3FEB50, length = 0x00008C/* Part of Boot ROM */FPUTABLES:origin = 0x3FEBDC, length = 0x0006A0/* Pa

9、rt of Boot ROM */BOOTROM:origin = 0x3FF27C, length = 0x000D44/* 8Kw Boot ROM */RESET:origin = 0x3FFFC0, length = 0x000002/* part of Boot ROM */FLASH_CONST : origin = 0x300000, length = 0x010000PAGE 1 : /* Data Memory */M0SARAM:origin = 0x000002, length = 0x0003FE/* 1Kw M0 SARAM */M1SARAM:origin = 0x

10、000400, length = 0x000400/* 1Kw M1 SARAM */DRAM:origin = 0x008000, length = 0x008000PIEVECT:origin = 0x000D00, length = 0x000100ZONE7B:origin = 0x210000, length = 0x010000/ FLASH_DATA : origin = 0x330000, length = 0x008000/* On-chip FLASH */SECTIONS/* Compiler Required Sections */* Program memory (P

11、AGE 0) sections */.text1 : DSP2833x_CodeStartBranch.obj(.text) FLASH_PROGRAMS, PAGE = 0.text2 : *(.text) FLASH_PROGRAM, PAGE = 0.cinit: FLASH_PROGRAM, PAGE = 0.const: FLASH_PROGRAM, PAGE = 0.econst : FLASH_CONST, PAGE = 0.pinit: FLASH_PROGRAM, PAGE = 0.reset : RESET,PAGE = 0, TYPE = DSECT /* We are

12、not using the .reset section */.switch : FLASH_PROGRAM, PAGE = 0.cio: FLASH_PROGRAM, PAGE = 0/* Data Memory (PAGE 1) sections */.bss: DRAM,PAGE = 1.ebss: DRAM,PAGE = 1.stack: DRAM,PAGE = 1.sysmem: ZONE7B,PAGE = 1.esysmem: ZONE7B,PAGE = 1/* User Defined Sections */codestart : BEGIN_FLASH, PAGE = 0/*

13、Used by file CodeStartBranch.asm */csm_rsvd : CSM_RSVD,PAGE = 0/* Used by file passwords.asm */internalMemFuncs : FLASH_PROGRAM, PAGE = 0/* Used by file Xintf.c. Linkto internal memory */passwords : PASSWORDS,PAGE = 0/* Used by file passwords.asm */* Section secureRamFuncs used by file SysCtrl.c. */

14、ramfuncs : LOAD = FLASH_PROGRAM, PAGE = 0/* Should be Flash */RUN = ZONE7A,PAGE = 0/* Must be CSM secured RAM */LOAD_START(_RamfuncsLoadStart), LOAD_END(_RamfuncsLoadEnd),RUN_START(_RamfuncsRunStart)/* Allocate ADC_cal function (pre-programmed by factory into TI reserved memory) */PAGE = 0, TYPE = N

15、OLOAD.adc_cal : load = ADC_CAL,end of file*升级程序cmd文件* File: f28335_nonBIOS_flash.cmd - Linker command file for non-DSP/BIOS * code with DSP in Boot to Flash boot mode.* History: 09/18/07 - original (D. Alter)*MEMORYPAGE 0: /* Program Memory */BEGIN_MO : origin = 0x000000, length = 0x000002/* Part of

16、 MOSARAM. Used for Boot to M0 bootloader mode. */FLASH_PROGRAM : origin = 0x330000, length = 0x005000/* On-chip FLASH G*/FLASH_PROGRAM1 : origin = 0x335000, length = 0x001000/* On-chip FLASH G*/FLASH_CONST : origin = 0x336000, length = 0x001000/* On-chip FLASH G*/ZONE7A : origin = 0x200000, length =

17、 0x010000CSM_RSVD:origin = 0x33FF80, length = 0x000076/* Part of FLASH Sector A. Reserved when CSM is in use. */BEGIN_FLASH : origin = 0x33FFF6, length = 0x000002/* Part of FLASH Sector A. Used for Jump to flash bootloader mode. */PASSWORDS : origin = 0x33FFF8, length = 0x000008/* Part of FLASH Sect

18、or A. CSM password locations. */ADC_CALmory */:origin = 0x380080, length = 0x000009/* ADC_cal function in Reserved meOTP: origin = 0x380400, length = 0x000400/* 1Kw OTP */IQTABLES:origin = 0x3FE000, length = 0x000B50/* Part of Boot ROM */IQTABLES2:origin = 0x3FEB50, length = 0x00008C/* Part of Boot

19、ROM */FPUTABLES:origin = 0x3FEBDC, length = 0x0006A0/* Part of Boot ROM */BOOTROM:origin = 0x3FF27C, length = 0x000D44/* 8Kw Boot ROM */RESET:origin = 0x3FFFC0, length = 0x000002/* part of Boot ROM */PAGE 1 : /* Data Memory */M0SARAM:origin = 0x000002, length = 0x0003FE/* 1Kw M0 SARAM */M1SARAM:orig

20、in = 0x000400, length = 0x000400/* 1Kw M1 SARAM */DRAM:origin = 0x008000, length = 0x008000PIEVECT:origin = 0x000D00, length = 0x000100ZONE7B:origin = 0x210000, length = 0x010000FLASH_DATA: origin = 0x330000, length = 0x008000 /* On-chip FLASH B*/SECTIONSFlash28_API:-IFIash28335_API_V210.lib(.econst

21、)-IFIash28335_API_V210.lib(.text)LOAD = FLASH_PROGRAM1,RUN = ZONE7A,LOAD_START(_Flash28_API_LoadStart),LOAD_END(_Flash28_API_LoadEnd),RUN_START(_Flash28_API_RunStart),PAGE = 0/* Compiler Required Sections */* Program memory (PAGE 0) sections */.text: FLASH_PROGRAM,PAGE = 0.cinit: FLASH_PROGRAM,PAGE

22、= 0.const: FLASH_PROGRAM, PAGE = 0.econst : FLASH_CONST, PAGE = 0.pinit: FLASH_PROGRAM, PAGE = 0.reset : RESET,PAGE = 0, TYPE = DSECT /* We are not using the .reset section */.switch : FLASH_PROGRAM, PAGE = 0.cio: FLASH_PROGRAM, PAGE = 0/* Data Memory (PAGE 1) sections */.bss:DRAM,PAGE = 1.ebss:DRAM

23、,PAGE = 1.stack:DRAM,PAGE = 1.sysmem : ZONE7B,PAGE = 1.esysmem : ZONE7B,PAGE = 1/* User Defined Sections */codestart : BEGIN_FLASH, PAGE = 0/* Used by file CodeStartBranch.asm */csm_rsvd : CSM_RSVD,PAGE = 0/* Used by file passwords.asm */internalMemFuncs : FLASH_PROGRAM, PAGE = 0/* Used by file Xintf.c. Linkto internal memory */passwords : PASS