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LAUNCHXL-F28027: motorware 的例程Lab01b,不接usb,直接上电不运行

Part Number: LAUNCHXL-F28027
Other Parts Discussed in Thread: DRV8301, MOTORWARE

motorware 的例程Lab01b ,launchpad XL TMS320F2802x 接usb连电脑仿真模式,程序中的两个使能位直接在头文件中改成使能了,程序可以运行(控制DRV8301接无刷电机,电机能转),程序烧写过后,拔出USB,重新上电,程序不运行。

请问这是什么原因,启动三个拨码开关都是接on,应该是flash启动

  • 你好,你的程序是烧写到flash中的吗?例程本身是烧写ram的,断电丢失,要修改为flash运行的

  • cmd文件如下:BEGIN指向flash,codestart 指向 BEGIN。应该是flash启动,拨码开关也拨到高电平,指向flash启动。为什么不接仿真器 上电不运行?

    MEMORY
    {
        PAGE 0: /* Program Memory */
        OTP : origin = 0x3D7800, length = 0x000400 /* on-chip OTP */
        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 */
    FLASHB_D : origin = 0x3F0000, length = 0x006000 /* on-chip FLASH B, C and D */
    D_FLASHA : origin = 0x3F6000, length = 0x001F80 /* on-chip FLASH A */
    P_RAML0 : origin = 0x008000, length = 0x000980 /* on-chip PRAM block L0 */

    PAGE 1 : /* Data Memory */

        RAMM0_M1 : origin = 0x000000, length = 0x000600 /* on-chip RAM block M0 + M1. 0x600 to 0x800 reserved for InstaSPIN */
        D_RAML0 : origin = 0x008980, length = 0x000680 /* on-chip DRAM block L0 */
    }

    SECTIONS
    {
        /* Allocate program areas: */
        .cinit : > FLASHB_D PAGE = 0
        .pinit : > FLASHB_D, PAGE = 0
        .text : > FLASHB_D PAGE = 0
    codestart : > BEGIN     PAGE = 0
        ramfuncs : LOAD = FLASHB_D,
        RUN = P_RAML0,
        LOAD_START(_RamfuncsLoadStart),
        LOAD_END(_RamfuncsLoadEnd),
        RUN_START(_RamfuncsRunStart),
        PAGE = 0

  • 你好,看一下这个帖子,里面介绍得很详细如何将lab更改为flash boot。因为这是个大工程,所以需要更改的地方挺多的,不只是更改cmd和预定义。

    https://e2e.ti.com/support/microcontrollers/c2000-microcontrollers-group/c2000/f/c2000-microcontrollers-forum/991095/launchxl-f28069m-instaspin-on-f28069m-launch-pad-can-not-boot-from-flash?tisearch=e2e-sitesearch&keymatch=lab%252525252520%252525252520flash# 

  • 是电路的问题 ,我测了一下TRST引脚上的电压,在不连仿真器的情况下也有3.3V电压。把相应的拨码开关拨到另一端。程序可以独立运行了。说明launchpad硬件有缺陷。

    谢谢您的答复!