F28335的程序不能在flash中运行

我用的是F28335_example_BIOS_flash.pjt项目文件

我将我的电机控制程序按例子做了修改，发现相同的问题，就是下载到flash后能运行正常，但是断电再运行，就不正常了。如果这是接上调试器运行，发现能运行到main函数，但是不能运行到我定义的各个进程。

最后发现问题和外部ram无关。只要关电源再开机，机器都会运行都FXN_F_selfLoop函数而死机。问题还是没有解决

1.  请确认你的boot 模式是否设置为Flash模式，即需要设置有关boot的GPIO的状态。

2. 你的外部存储器extmem0是指什么地址？

谢谢， extmem0 地址：0x100000，len：0x30000.

void UserInit(void)

{

#ifdef EXAMPLE_FLASH // EXAMPLE_FLASH, if defined, is in CCS project options

// Section .trcdata is generated by DSP/BIOS.

// It must be copied from its load to its run address BEFORE main().

memcpy(&trcdata_runstart, &trcdata_loadstart, &trcdata_loadend - &trcdata_loadstart);

#endif

//--- CPU Initialization

InitSysCtrl(); // Initialize the CPU

InitPieCtrl(); // Initialize and enable the PIE

InitWatchdog(); // Initialize the Watchdog Timer

InitGpio(); // Initialize the shared GPIO pins

InitXintf();

。。。

void InitXintf(void)

{

EALLOW;

XintfRegs.XINTCNF2.bit.XTIMCLK = 1;

// write buffering

while(XintfRegs.XINTCNF2.bit.WLEVEL != 0); // poll the WLEVEL bit;

XintfRegs.XINTCNF2.bit.WRBUFF = 3;

// XCLKOUT is disabled

XintfRegs.XINTCNF2.bit.CLKOFF = 1;

// XCLKOUT = XTIMCLK

XintfRegs.XINTCNF2.bit.CLKMODE = 0;

  SysCtrlRegs.PCLKCR3.bit.DMAENCLK = 1;       // DMA Clock

  SysCtrlRegs.PCLKCR3.bit.XINTFENCLK = 1;     // XTIMCLK

  SysCtrlRegs.PCLKCR3.bit.GPIOINENCLK = 1;    // GPIO input clock

//all Zone read/write lead/active/trail timing

XintfRegs.XTIMING0.bit.X2TIMING = 1;//0;//1;

// Zone 0------------------------------------

。。。 // Zone will not sample XREADY signal

XintfRegs.XTIMING0.bit.USEREADY = 0;

// XintfRegs.XTIMING0.bit.READYMODE = 1;  // sample asynchronous

// Size must be either:

// 0,1 = x32 or

// 1,1 = x16 other values are reserved

XintfRegs.XTIMING0.bit.XSIZE = 3;

// Zone 6------------------------------------

// When using ready, ACTIVE must be 1 or greater

// Lead must always be 1 or greater

// Zone write timing

XintfRegs.XTIMING6.bit.XWRLEAD = 1;//3;

XintfRegs.XTIMING6.bit.XWRACTIVE =1 ;//7;

XintfRegs.XTIMING6.bit.XWRTRAIL = 0;//3;

// Zone read timing

XintfRegs.XTIMING6.bit.XRDLEAD = 1;//3;

XintfRegs.XTIMING6.bit.XRDACTIVE = 1;//7;

XintfRegs.XTIMING6.bit.XRDTRAIL = 0;//3;

// single all Zone read/write lead/active/trail timing

XintfRegs.XTIMING6.bit.X2TIMING = 0;

// Zone will sample XREADY signal

XintfRegs.XTIMING6.bit.USEREADY = 0;// 1;

// XintfRegs.XTIMING6.bit.READYMODE = 1;  // sample asynchronous

// Size must be either:

// 0,1 = x32 or

// 1,1 = x16 other values are reserved

#if DATA_WIDTH >16

XintfRegs.XTIMING6.bit.XSIZE = 1;

#else

XintfRegs.XTIMING6.bit.XSIZE = 3;

#endif

// Bank switching

// Assume Zone 6 is slow, so add additional BCYC cycles

// when ever switching from Zone 6 to another Zone.

// This will help avoid bus contention.

XintfRegs.XBANK.bit.BANK = 6;

XintfRegs.XBANK.bit.BCYC = 6;

// double all Zone read/write lead/active/trail timing

XintfRegs.XTIMING7.bit.X2TIMING = 1;

// Zone will sample XREADY signal

XintfRegs.XTIMING7.bit.USEREADY = 1;

XintfRegs.XTIMING7.bit.READYMODE = 1;  // sample asynchronous

// Size must be either:

// 0,1 = x32 or

// 1,1 = x16 other values are reserved

XintfRegs.XTIMING7.bit.XSIZE = 3;

// Bank switching

// Assume Zone 7 is slow, so add additional BCYC cycles

// when ever switching from Zone 6 to another Zone.

// This will help avoid bus contention.

//    XintfRegs.XBANK.bit.BANK = 7;

//    XintfRegs.XBANK.bit.BCYC = 7;

//EDIS;

  //Force a pipeline flush to ensure that the write to

  //the last register configured occurs before returning.

      //  EALLOW;

   // InitXintf16Gpio();

//EALLOW;

    GpioCtrlRegs.GPCMUX1.bit.GPIO64 = 3;  // XD15

    GpioCtrlRegs.GPCMUX1.bit.GPIO65 = 3;  // XD14

    GpioCtrlRegs.GPCMUX1.bit.GPIO66 = 3;  // XD13

    GpioCtrlRegs.GPCMUX1.bit.GPIO67 = 3;  // XD12

    GpioCtrlRegs.GPCMUX1.bit.GPIO68 = 3;  // XD11

    GpioCtrlRegs.GPCMUX1.bit.GPIO69 = 3;  // XD10

    GpioCtrlRegs.GPCMUX1.bit.GPIO70 = 3;  // XD19

    GpioCtrlRegs.GPCMUX1.bit.GPIO71 = 3;  // XD8

    GpioCtrlRegs.GPCMUX1.bit.GPIO72 = 3;  // XD7

    GpioCtrlRegs.GPCMUX1.bit.GPIO73 = 3;  // XD6

    GpioCtrlRegs.GPCMUX1.bit.GPIO74 = 3;  // XD5

    GpioCtrlRegs.GPCMUX1.bit.GPIO75 = 3;  // XD4

    GpioCtrlRegs.GPCMUX1.bit.GPIO76 = 3;  // XD3

    GpioCtrlRegs.GPCMUX1.bit.GPIO77 = 3;  // XD2

    GpioCtrlRegs.GPCMUX1.bit.GPIO78 = 3;  // XD1

    GpioCtrlRegs.GPCMUX1.bit.GPIO79 = 3;  // XD0

    GpioCtrlRegs.GPBMUX1.bit.GPIO40 = 3;  // XA0/XWE1n

    GpioCtrlRegs.GPBMUX1.bit.GPIO41 = 3;  // XA1

    GpioCtrlRegs.GPBMUX1.bit.GPIO42 = 3;  // XA2

    GpioCtrlRegs.GPBMUX1.bit.GPIO43 = 3;  // XA3

    GpioCtrlRegs.GPBMUX1.bit.GPIO44 = 3;  // XA4

    GpioCtrlRegs.GPBMUX1.bit.GPIO45 = 3;  // XA5

    GpioCtrlRegs.GPBMUX1.bit.GPIO46 = 3;  // XA6

    GpioCtrlRegs.GPBMUX1.bit.GPIO47 = 3;  // XA7

    GpioCtrlRegs.GPCMUX2.bit.GPIO80 = 3;  // XA8

    GpioCtrlRegs.GPCMUX2.bit.GPIO81 = 3;  // XA9

    GpioCtrlRegs.GPCMUX2.bit.GPIO82 = 3;  // XA10

    GpioCtrlRegs.GPCMUX2.bit.GPIO83 = 3;  // XA11

    GpioCtrlRegs.GPCMUX2.bit.GPIO84 = 3;  // XA12

    GpioCtrlRegs.GPCMUX2.bit.GPIO85 = 3;  // XA13

    GpioCtrlRegs.GPCMUX2.bit.GPIO86 = 3;  // XA14

    GpioCtrlRegs.GPCMUX2.bit.GPIO87 = 3;  // XA15

    GpioCtrlRegs.GPBMUX1.bit.GPIO39 = 3;  // XA16

    GpioCtrlRegs.GPAMUX2.bit.GPIO31 = 3;  // XA17

    GpioCtrlRegs.GPAMUX2.bit.GPIO30 = 3;  // XA18

    GpioCtrlRegs.GPAMUX2.bit.GPIO29 = 3;  // XA19

  //  GpioCtrlRegs.GPBMUX1.bit.GPIO34 = 3;  // XREADY

// GpioCtrlRegs.GPBMUX1.bit.GPIO35 = 3;  // XRNW

//    GpioCtrlRegs.GPBMUX1.bit.GPIO38 = 3;  // XWE0

GpioCtrlRegs.GPBMUX1.bit.GPIO34 = 0;  // XREADY

GpioCtrlRegs.GPBMUX1.bit.GPIO35 = 0;  // XRNW

    GpioCtrlRegs.GPBMUX1.bit.GPIO38 = 3;  // XWE0

    GpioCtrlRegs.GPBMUX1.bit.GPIO36 = 3;  // XZCS0

    GpioCtrlRegs.GPBMUX1.bit.GPIO37 = 3;  // XZCS7

    GpioCtrlRegs.GPAMUX2.bit.GPIO28 = 3;  // XZCS6

    EDIS;

asm(" RPT #7 || NOP");

} // end of InitXintf()

问题没有解决。

您好！请在Code Start Branch.asm中，将XINTF引脚配置成XINTF，因为默认是GPIO。再尝试一下。

具体的可以参考下面的代码：

***********************************************************************

WD_DISABLE .set 1 ;set to 1 to disable WD, else set to 0

   .ref _c_int00

   .global code_start

    .ref _InitSysCtrl  ;开外设

.ref _xintf_zone6and7_timing  ;初始化XINTF总线为16BIT(用户的系统硬件设计相关)

***********************************************************************

* Function: codestart section

*

* Description: Branch to code starting point

***********************************************************************

   .sect "codestart"

code_start:

   .if WD_DISABLE == 1

        LB wd_disable       ;Branch to watchdog disable code

   .else

       LB _c_int00         ;Branch to start of boot.asm in RTS library

   .endif

;end codestart section

***********************************************************************

* Function: wd_disable

*

* Description: Disables the watchdog timer

***********************************************************************

   .if WD_DISABLE == 1

   .text

wd_disable:

   SETC OBJMODE        ;Set OBJMODE for 28x object code

   EALLOW              ;Enable EALLOW protected register access

   MOVZ DP, #7029h>>6  ;Set data page for WDCR register

   MOV @7029h, #0068h  ;Set WDDIS bit in WDCR to disable WD

   EDIS  

  LCR _InitSysCtrl

  LCR _xintf_zone6and7_timing             ;Disable EALLOW protected register access

   LB _c_int00         ;Branch to start of boot.asm in RTS library

   .endif

;end wd_disable

.end